THAI NGUYEN UNIVERSITY UNIVERSITY OF AGRICULTURE AND FORESTRY PHAM THI HONG HANH RESEARCH AND PRODUCTION OF SCENTED CANDLE PRODUCTS FROM CERTAIN ESSENTIAL OILS... During the process of i
INTRODUCTION
Research rationale
A candle is a solid material, usually a combination of candle-making materials, with a heart in the middle, lit to provide light and sometimes to warm up Candles today are mostly made of paraffin It can also be made from beeswax, plant wax, and gels Along with the progress of the world economy, candles also have a history of annual development Since ancient times, people have used coconut oils and fats, cows, goats, and various other animals to make candles In respect of the nobility, people used Beeswax Candles are known to have originated in China around 200 BC and were obtained from whale fat By the 19th century, winter fat was the main raw material for making candles
The advancement in raw materials was made in 1820, when stearin was mined Stearin was a chemical compound created from refined fat and used in candle making
Previously, in Vietnam, candles were often used to worship ancestors and to light weddings In times of modern social development such as the present, when people's lives are increasingly improved, the use of candles is becoming increasingly popular
The scent of the harmonious combination of candles and flowers gives people a feeling of romance and coziness Thanks to their level of sophistication, candles are not simply lit objects but also considered a product of art Despite its small size, a candle can accentuate an entire interior space, even a room with a magnificent and wonderful view
4 On that basis, I propose to implement the topic: Research and produce scented candle products from some essential oils
Aiming to optimize and enhance the production process of scented candles from some essential oils and bring the most practical benefits to consumers.
Research’s Objectives
Research and production of scented candle products from a number of essential oils
Content 1: Research and develop the process of producing scented candles from natural materials
A Research on optimizing the conditions in the production process of scented candles from natural materials
Experiment 1: Research on the selection of waxes to use to produce scented candles
Experiment 2: study the mixing ratio of beeswax and soy wax Experiment 3: Study on the ratio of essential oil blends in scented candles B Develop the production process of scented candles
Content 2: Develop scented candle products from natural ingredients
- Research and manufacture scented candle products from a number of essential Oils
Scientific and practical significance
1.3.1 Scientific significance of the topic
- The results of the study will provide new scientific data on: the ingredients in candle wax
5 - The influence of factors on the ability to extract essential oils
- Long-term and effective storage method - Develop the essential oil extraction process and candle wax production process with the most optimal conditions
1.3.2 Practical significance of the topic
- Help students improve their experience and skills in practicing scientific research, consolidate theoretical knowledge, and apply it in practice to improve themselves
- From the research results of the project, it will contribute a part of the research into the aromatic candle production process and essential oil extraction process, health and economic benefits for the community
LITERATURE REVIEW
Scientific basis of the topic
2.1.1 Candlestick Overview 2.1.1.1 General introduction to scented candles
Scented candles are a solid mass of fuel, usually waxy and have hearts in the middle to light sometimes using heat Today candles are usually made from paraffin wax, which can also be made from soy wax, beeswax, and animal fats
Since humans found and refined petroleum from nature, candles have been mass-produced to serve humans In the filtration process, in addition to the main products of lock oil, there are also countless products used in different industries, paraffin and gels are byproducts of petroleum but it is the main raw material in the candle manufacturing industry In addition to paraffin and gels, people also use some other materials to produce candles such as soy wax, which is a cloudy color material derived from nature, has a natural aroma and does not harm human health
Paraffin candles and soy wax candles, pillar candles, tea lamp candles, flower candles, water drop candles Disposable candles have a high gel density, non- receptive candles have a low gel density To increase the aesthetics of candles, people often add colors and ornaments, add essential oils to create aroma for candles Therefore, in addition to the role of lighting candles, it is also used to decorate in formal places and on special days
The faint scent of candles is now popular with many households However, if used too much, it will affect health The Vietnam Institute of Scientific Research said that the cause of toxicity of scented candles is due to the candle heart made of the core, especially materials that do not have a clear origin Especially many
7 substances contained in scented candles are toxic to the human body such as toluene (C6H5CH3), acetone (CHCOCH3), formaldehyde (HCHO), methylene chloride (CH2Cl2) Many of these substances have been shown to cause cancer, inadvertence, and damage to the nervous system, Using scented candles too much can provoke asthma attacks, candles with synthetic aromas from chemicals are highly pathogenic
The Vietnam Institute of Industrial Sciences said that the more fragrant the smell, the more toxic it is, especially candles with synthetic aromas from chemicals
2.1.1.2 The composition of scented candles
- Soybean wax: To make soy wax, we need some materials such as stoves, kettles, cups, rubber powder, paraffin oil, soybean oil
Steps to make soy wax Step1: Blend rubber powder with paraffin oil in the right proportions to avoid the mixture clumping and help dissolve the raw materials most effectively
Step 2: Pour the mixture into a saucepan, heat the mixture over low heat and stir your hands constantly
Step 3: Stir while pouring soybean oil into the mixture Step 4: Stir while keeping the mixture boiled moderately at a rolling foam level, continue to stir well so that the main burn Pay attention not to let water fall in because if water falls, it will lead to a state of fire, fire and explosion
Step 5: After 30 minutes of cooking the mixture, check the mixture if the wax has been re-cleared
Step 6: Pour the wax into a cup and let it cool
8 - Beeswax is a colorless liquid created by worker bees when they build walls in the hive, beeswax is located below the film that surrounds the outside of the hive they are in the form of blocks consisting of many hexagonal cells on the surface
For beeswax bees act as a natural antibiotic to help protect their nests from the invasion of other organisms, to be able to make 1kg of beeswax they need to spend 3kg of honey and pollen so beeswax is considered to have many nutritional components no less than honey
- Essential oils: Essential oils are aromatic substances or odorants present in some parts of plants (seeds, roots, tubers, bark, flowers, leaves, fruits, oils, sap ) or animals (essential oil bags) The flora has essential oils of about 3000 species, of which 150-200 species have industrial significance Essential oils are present in the above raw material sources in very different concentrations, which can vary from parts per million to percent and essential oils are relatively volatile Essential oils are concentrated in several families such as canopy family, chrysanthemum, lip flower family, Camphor family, Sim family, Learn Cam, they Ginger
Essential oils are extracted from some parts of the plant such as petals, leaves, branches, roots, fruit peel, seed stalks, bark
- Candle hearts: Candle hearts are made from different materials but are usually made from cotton fibers, paper, silk threads, The size of the candle heart must be balanced with the amount of candle wax, if the heart is too small, the candle will hardly burn or not burn, if the heart is too big, it will burn quickly and may create a lot of black smoke The length of the candle heart also affects the burning speed of the candle, to maintain the burning speed and a stable flame, it is necessary to regularly observe and cut the candle heart to about 0.4cm for the
9 candle to burn slowly and limit smoke
- Candle mold: Candles are usually made of metal or glass with different shapes but most people often use cylindrical porters, aluminum porters are very light, smooth surfaces do not leave marks when pouring wax and can be reused
- In our daily life, dyes are used in many different fields Dyes are the names of organic compounds whose colors are very diverse in color and types, they have the ability to dye means to cling to color or to attach color directly to other materials Dyes are mainly used to dye materials from nature In addition, they are used to dye rubber, plastics, fats, waxes, and soaps To color the wax one uses pigment and dyes that are insoluble in water in this case the pigment is attached to the wax thanks to the film-forming agent
2.1.1.3 The effect of scented candles
Benefits of using scented candles:
The most obvious use of scented candles is to radiate incense The gentle scent of scented candles makes your home space sweet and fragrant Many types of candles are uniquely shaped and colorful, so they are often used as decorations
They can be scented candles to decorate cabinet shelves, bookshelves, desks, etc
Especially in the rainy season, your home will be prone to moldy odors, and scented candles are one of the most effective solutions for good deodorizing ability Besides deodorizing, some scented candles also work very well at repelling insects and mosquitoes
The fragrant scent from candles also has an effect on the brain to help the spirit relax and increase concentration After a stressful and tiring working day, go home to inhale the scent from your body's scented candles as if to recharge energy
10 and reduce stress caused by working too much
Domestic and foreign research works
In the process of searching for information and references, there is currently no publication that accurately describes the percentage of materials that constitute scented candles This can be explained by the trade formula security of scented candles
Currently, people produce scented candle products on a small scale or
19 medium and large scale but still use labor to produce products
2.2.2 Overview of the research situation in the world
In the world of candle culture with thousands of years of history, the habit of using candles has penetrated into the subconscious of consumers In addition to creating luxury with candles, it also has the effect of purifying the air to create romance Consumers in Europe and the United States and other regions with a developed candle culture, enter supermarkets, first displaying and selling candle products At home, candle towers in the garden, in the hallway, stairs, in the kitchen, in the bedroom In terms of production, in a small production area of 500 square meters, his company in Hong Kong produces 500 tons of products per year, while his factory in Vietnam produces 3 containers of 40 tons per month, none of which are sold in Vietnam In terms of cost, foreign-made candles are 3 times more expensive than candles produced in Vietnam
MATERIALS, RESEARCH CONTENT AND
Subjects and scope of study
3.1.1 Research subjects and research materials
● The subjects of study are:
- The process of producing and processing essential oils with the conditions (temperature, salt concentration, storage time, etc.) impacts the process
- The process of producing scented candles from some essential oils
● Materials: essential oils, soybean wax, heart candles, porters, beeswax
The chemicals used for experiments and manufacturing processes are shown in table 3.1 below
No Name of chemical Original
The equipment and instruments used for the study are shown in table 3.2 below:
Table 3.2: Research equipment and instruments
Instruments (general use for experiments|)
1 Pressure cooker 20 liters 20 Liter Vietnam
4 Gas cylinder set 13kg and safety valve Vietnam
5 Pear flask 500ml 500ml China
6 Erlenmeyer Flask 250ml 250ml China
9 Volumetric Flask 250ml 250ml China
10 Volumetric Flask 50ml 50ml China
11 Volumetric Flask 25 ml 25ml China
13 Glass pipette 10ml 10ml China
14 Glass pipette 5ml 5ml China
15 Glass pipette 2ml 2ml China
Instruments (general use for experiments|)
16 Glass pipette 1ml 1ml China
24 Flat bottom florence flask 500ml 500ml Germany
23 Along with other equipment and tools for research in the laboratory of the Department of Biotechnology and Food Technology
Scope of study location and time
Scope of laboratory-scale research
Location: laboratory of the Faculty of Biotechnology - FT
Research content
Research and develop a process for producing scented candles from some essential oils, including the following two contents:
• Content 1: Research on optimizing conditions in the scented candle production proces
Research on optimizing conditions in the production process of scented candles from natural raw materials
+ Experiment 1: The study evaluated the burning time of beeswax and soy wax
+ Experiment 2: Study the mixing ratio between beeswax and soybean wax and the burning time of candles after mixing
+ Experiment 3: Study the proportion of essential oil mixing in scented candle products
• Content 2: Development of scented candle products from natural materials
Research and manufacture scented candle products from certain essential oils
Research methodology
3.4.1 The process of separating essential oils by steam attraction method
In this study, we used steam charismatic distillation without its own boiler:
Development of essential oil extraction process:
Based on the research results optimized in section 3.1, conduct a trial production of the essential oil extraction process in the practice of household-scale and industrial-scale production:
- Producing essential oils with raw material volumes of 100 kg and 200 kg respectively
- Use a distillation system and a distillation pot corresponding to the above volume of raw materials of 220 liters and 300 liters, respectively
The stages of the distillation of essential oils from Cao Bang mandible peels are carried out with the following steps:
Materials are washed, when the shell needs to be washed to remove stains of impurities on the shell, gloves and masks must be worn when preparing to ensure the safety of specimens and people causing contamination Small research for some types of ingredients and some types of ingredients is immediately distilled
Peel off the flesh of the fruit and take only the pods
Step 2: Grind and soak the raw materials:
Crushing: Raw materials after being preliminarily processed are crushed with water so that the water/material ratio is 5/1 (v/w) Grind raw materials within 1 minute
25 Because essential oils in plants are usually located in cell tissues, grinding aims to release essential oils from the tissue so that when distillation is carried out, essential oils are easy to escape, thereby shortening the distillation process time to achieve high efficiency The smaller the grinding, the higher the efficiency of breaking cell tissues, but it is easy to clog the steam ducts (essential oil + water) and the porosity affects the distillation process Therefore, it is necessary to grind raw materials with the right size to achieve the highest performance
Immersion of raw materials: Raw materials After being crushed, it will be soaked in NaCl solution (6%) for 5 hours The purpose of this stage is to make the essential oil penetrate from the secretory sac to the outside, making the distillation process more thorough
Raw materials after being soaked will be put into the distillation equipment
So that the material is on top of the micro-support, separated from the bottom layer of the pot The raw materials contained in the device must not exceed 85% of the equipment capacity to avoid foaming, spilling into the cooling pipe, do not put the raw materials too tightly, making it difficult for steam to distribute evenly throughout the material block and not too liquid, too porous will make the vapor easy to follow the hollow places out without contact with the whole raw materials
When loading ingredients, it is necessary to cover the pot tightly to avoid evaporation and loss of essential oils during distillation Then install and install the refrigeration system
Proceed to distillation and collection of essential oil mixtures:
At the beginning of distillation essential oils can provide a large amount of
26 heat to boil distilled water After about 30 minutes the distiller starts to boil, the temperature of the steam measured at the distillation pipe reaches from 100 – 110 o C and then the boiling steam wraps the essential oil away to the refrigeration tube and follows out to the extractor we obtain a mixture of water and essential oils Essential oils lighter than water will rise out of the water, the first 1 hour of heating is the most time the essential oil comes out Then lower the temperature, maintain the pot at a sufficient boiling point because when at high temperatures the essential oil will easily decompose Therefore, it is necessary to monitor the distillation pot temperature meter and maintain it at 95-100 o C During the distillation process, attention should be paid to adjusting the condensation temperature to be in the range of 30-40 o C (by adjusting the cooling water rate) because if the condensation is too hot, it will increase the solubility of the essential oil into the water and evaporate the essential oil To check that the distillation process is finished, it is not possible to use a glass to catch a little condensate, if it is seen on the glass with oil, the distillation process is not finished
After distillation is completed, close the cooling water supply valve, turn off the stove, let it cool for 15-30 minutes, open the lid and remove the pulp, then use clean water to clean the equipment first to continue loading the ingredients to distill the new batch
Condensation: The resulting mixture of steam and essential oils enters the welding bio-tube of the distillation equipment, under the action of water contained in the low-temperature welded bio-tube, which will convert the mixture from vapor to liquid form and then flow into the condenser of the equipment
Dissociation: Let the resulting mixture remain in the condenser until it is
27 completely separated into two phases: the essential oil lighter than water will be at the top, the water will be at the bottom Open the drain valve of the extraction tank so that the essential oil flows into the catch tank to collect the crude essential oil
Develop the process of processing essential oils after storage:
Step 4: Purify essential oils - Make anhydrous: Make anhydrous with Na2SO4 because Na2S04 has the ability to absorb water Add anhydrous Na2S04 to the crude oil container, and shake it until Na2S04 salt crystals begin to come out The amount of Na2S04 depends on how much or how little water is dissociated and at our experiment the amount of anhydrous Na2S04 used was 5% (the amount of Na2S04 is residual to be able to fully absorb the water contained in the original crude essential oil)
- Strain and recover essential oils: To settle the mixture above Let the anhydrous essential oil above flow through the glass funnel with the filter paper on top, pour it slowly through the funnel, to avoid letting the essential oil flow out, there is a glass jar underneath to store essential oils
Step 5: Storage Essential oils have removed water and put them in glass jars, closed to avoid evaporation of essential oils, and avoid direct contact with light and air
The finished essential oil production process is depicted in the diagram below:
Figure 3.1: Orange essential oil production process
Figure 3.2: Essential oil distillation equipment
3.4.2 Production method of scented candles
• Preparation of equipment and materials:
+ Equipment: Crazy stove, wax cooker, thermometer, measuring cup with beak, micropipette to suck essential oils, glass chopsticks
+ Materials: soy wax, beeswax, essential oils, candle porters, candle hearts Purpose: To obtain products with stable structure and soothing scents to bring to market The method of candle production is conducted with the following sequence
+ Step 1: Prepare raw materials for soy wax, beeswax, essential oils, heart candles, mold
+ Step 3: Add essential oils and stir
+ Step 4: Pour the wax into the area
30 + Step 5: Allow to cool at room temperature
Figure 3.3: Diagram of the expected production of aromatic candles from several essential oils
3.4.3 Proposal for the production process of scented candle
Step 1: Preparation of raw materials Raw materials used for the production of aromatic candles are soy wax, beeswax, and essential oils
Take the right amount of wax to put in a glass cup and then melt it by water insulation method at a temperature of 90°C
Essential oils are added when the wax temperature is below 70°C and stir the mixture well so that the essential oil dissolves in the wax
Pour the molten wax mixture into the already candle heart
Step 5: Let the candle cool at room temperature
After cooling at room temperature we obtain a complete scented candle product
3.4.4 Experimental layout method 3.4.4.1 Content 1: Research on optimizing the conditions in the aromatic candle manufacturing process
A Research on optimizing the conditions in the production process of scented candles from natural materials
Experiment 1: Study assessing the burning time of beeswax and soy wax
This experiment aimed to find the right wax material for scented candles
Beeswax and soy wax are two materials commonly used to produce fragrance products because beeswax and soybean wax are the fuels that sustain the burning of candles Does not cause black smoke or harmful substances during combustion and has a good ability to retain and emit fragrance A few studies have shown that flames from beeswax and soybean wax produce amounts of CO2, SO2, NO, etc that are about 60% less than those produced by burning wood Use beeswax and soybean wax with less shrinkage for a flat, beautiful candle surface in just one pour Environmentally friendly, benign and safe for health, non-irritating, and not harmful to consumers' health, so I chose these two types of wax to conduct research to evaluate the burning time of each type to find the best raw materials for the scented candle production process
Figure 3.5: Diagram of the study of the burning time of two types of wax
Weigh two types of wax 10g each, then melt at a temperature of 90 o C and then pour it to obtain the candle product Cut the wicks of two equal candles and then burn them at the same time the burning time is calculated from the time the candle is burned to the time the candle is completely extinguished, we get the table below
Table 3.3: The result of obtaining the combustion time of two types of wax
Type of wax Bee wax Soy wax
The criteria for comparison between formulas is the burning time, the experiment is repeated 3 times, the total number of formulas is 6, the optimal research results are used for the following formulas
Experiment 2: Studying the mixing ratio of beeswax and soy wax
After studying the burning time of beeswax and soybean wax, we conduct an experiment to study the ratio of beeswax and soybean wax to find the right ratio of beeswax and soybean wax to obtain a product with perfect structure and relative durability When completely using soybean wax to produce candles, storage and transportation will greatly affect the product structure On the other hand, beeswax is difficult to burn, but when mixed with soybean wax, the product structure will be more stable and less affected by environmental conditions, during transportation, the product is less prone to structural changes The percentage of beeswax more or less affects the product structure and burning time
Figure 3.6: Wax ratio study diagram
Insulate each wax mixture at 90°C at a fixed ratio according to each recipe:
Data processing methods
The data collected using the above research methods is processed using Excel The results are presented in the tables in the sections in Part IV Research Results and Discussions, and the results of the detailed analysis of the experiments are shown in Appendix 2
RESULTS AND DISCUSSION
Research results on the production process of aromatic candles from
4.1.1 Research results optimize the conditions in the production process of scented candles from natural materials
4.1.1.1 Results of research on the selection of waxes for use in the production of aromatic candles
In order to study the burning time of the two types of wax, after consulting in other studies, I heated the soy wax and poured it into a mold with a candle heart and waited for it to dry then proceeded to burn and timer, beeswax did the same
Table 4.1: The result of obtaining the combustion time of two types of wax
The results of the study showed that soy burns better and the flame is larger than beeswax but beeswax is in better shape than soy wax Specifically, Table 4.1 shows that beeswax burns for a very short period of time, soy wax burns for a long time
Figure 4.1 Burning two types of wax
Type of wax Bee wax Soy wax
4.1.1.2 Results of the study on the mixing ratio of beeswax and soy wax
To study the mixing ratio of beeswax and soy wax, after studying the burning time of the two waxes in the above experiment, I mixed two types of beeswax and soy wax materials with different ratios and then proceeded to melt and pour the results obtained in Table 4.2
Table 4.2: Results of wax ratio study
Looking at the results on table 4.2 I see The higher the percentage of beeswax, the higher the state and hardness, but the shorter the burning time Specifically, when increasing the amount of beeswax and decreasing the amount of soy wax in turn, we see that the color fades and the hardness gradually increases So we decided to choose a beeswax/soybean wax ratio of 1/9 during the experiment
4.1.1.3 Results of the study on the ratio of essential oil blends in scented candle products
To study the blending ratio of essential oils into candles, after studying the burning time and blending ratio of beeswax and soybean wax, I studied the ratio of mixing essential oils with different ratios Melt the wax and add the proportional amount of essential oil to the wax at 70 oC, and let it cool to a normal temperature
The results are in Table 4.3
Beeswax/soy wax ratio Sensory
4.1.1.3 Results of the study on the ratio of essential oil blends in scented candle products
To study the blending ratio of essential oils into candles, after studying the burning time and blending ratio of beeswax and soybean wax, I studied the ratio of mixing essential oils with different ratios Melt the wax and add the proportional amount of essential oil to the wax at 70 oC, and let it cool to a normal temperature
The results are in Table 4.3
Table 4.3: results of sensory assessment of essential oil ratios
After conducting an organoleptic evaluation of the blend of cinnamon, rosemary, and orange essential oils, I obtained the results in Table 4.3 Looking at Table 4.3, I see that the ratio of mixing cinnamon essential oil and rinse at 3% (due to the fact that cinnamon essential oil and flushing are difficult to dissolve in candles) and orange essential oil in scented candles at 5% (because orange
Essential oil ratio Name of essential oil
42 essential oil is easily soluble in candles) are the candles that achieve the best status, color, and scent
4.1.2 Building the production process of scented candles
After studying the optimization of the production process conditions of aromatic candles in content 1 I used the optimized conditions to build the aromatic candle manufacturing process and initially produced a test of aromatic candles from several essential oils, then evaluated the product senses according to (Aromatic fats obtained from flowers, by the method of "cold effleurage" (namely, diffusion of aromatic compounds of flowers in fat) or by the method of "hot effleurage" (impregnating or soaking flowers in molten fat) Process development results, test products and product evaluation results are detailed in section 4.2 of Part IV results and discussion
After studying the optimization of the production process conditions of aromatic candles in content 1 I use the conditions that have been optimized to build the aromatic candle production process, the procedure of which is depicted in the diagram below:
Figure 4.2: Diagram of the production process of aromatic candles
Step 1: Preparation of raw materials
To select raw materials that meet safe quality criteria and reserve raw materials in the process of making primary raw materials in case of waste of raw materials
The raw materials used for the production of scented candles are soy wax, beeswax, essential oils, wax cookers, wax chopsticks, sap boils
Because wax is hydrophobic, it is forbidden to put water in a wax pot The
44 boiling point of water is 100oC, and the melting point of wax is 90oC, so the purpose of hydronic heating is: Keep the wax liquid without overheating leading to fire and explosion, while maintaining a stable color
Add the weighed and mixed ingredients to the water heater, stir gently and evenly to create foam during the wax heating process
Helping users concentrate, unlike sunlight or crazy light bulbs that bind the eyes, the light emitted by candles makes the eyes pleasant At the same time, the scent of candles also helps users increase their ability to concentrate, bringing a great source of energy and abundant ideas
Repelling insects, scented candles are a good remedy to repel insects especially aromatic candles that use essential oils that have antibacterial properties and prevent fungi
Essential oils are added when the wax temperature is below 70°C and stir the mixture well so that the essential oil dissolves in the wax
- The essential oil collection tool must be made of glass to avoid oxidation - Small slowly because after the candle stirs unevenly will foam
Shape the product and increase the aesthetics of the product
45 Pour the molten wax mixture into the already candle heart
- Use a candle heart clip to position the candle heart then pour it slowly into the candle heart to top it
Step 5: Let the candle cool at room temperature
In order for the wax to return to solid form, when in solid state, the wax has a very good ability to fix odors easily for storage and transportation
In the process of cooling candles, the candle must be left in a fixed place, causing vibrations that affect the final structure of the product
1 Ingredients Bee wax, soy wax, essential oil
Opt for a sturdy glass candle case
Make sure to burn scented candles only for 20 minutes to 3 hours
Keep the length of the wick appropriate
Store candles always like new
Turn off the candle when the burning wick is close to the wax
Well-preserved scented candles can be used within 2 years from the date of manufacture and if stored moderately, they can be used within 6 months from the date of manufacture
- Help the room become warmer
- Deodorize, help the room have a pleasant aroma
- Create a sense of comfort for users
- Some types can repel insects
Before burning the candle, use scissors to cut the wick to about 0.5cm, the next times of burning the candle must ensure that the candle melts evenly into a candle to prevent the heart of the candle and keep the time to radiate
6 Objects of use Be 10 years old or older 7 Contraindications Keep scented candles out of the
No Character Description reach of children and pets to avoid burns
Other notes on the packaging
Note: tested product if not certified by competent authorities
- Based on the above process, initially produce test scented candles from some essential oils:
The essential oils selected for the manufacture and evaluation of aromatic candles produced according to the above process are:
Cinnamon essential oil: cinnamon essential oil is an essential oil extracted from the bark of the cinnamon tree, cinnamon essential oil has a yellow color, a characteristic strong aroma, the main ingredient in cinnamon essential oil is cinnamic aldehyde This essential oil is widely used in daily life
Cinnamon essential oil has the use of supporting the immune system to prevent bacteria and many harmful fungi, because cinnamon essential oil has hot spicy properties and effective antibacterial ability, so cinnamon essential oil is very good for treating colds and flu Cinnamon essential oil also has the effect of deodorizing and repelling insects The aroma of cinnamon essential oil also helps the mind to be clear, comfortable, and the brain's ability to function is improved
In addition to its practical uses for health, cinnamon is also used in the medicinal and beauty care industries
48 Citronella essential oil: citronella essential oil is an essential oil extracted from the stems and leaves of the citronella tree that is most commonly used today with a gentle and pleasant scent Lemongrass essential oil is called lemongrass essential oil In which lemongrass is a plant of the lemongrass family This is a type of lemongrass native to southeast Asia
Results of development of scented candle products from natural materials 48
In this content, I researched some fragrant candle product lines that use natural aromatherapy are some essential oils that are commonly used today The
49 product lines of scented candles are manufactured according to the use of each different essential oil:
The first product line includes two types Citronella essential oil: Creates a scent with some active ingredients that repel mosquitoes: citral, geranial has a repellent effect on insects, especially against mosquitoes and ants The scent of citronella essential oil annoys many insects, keeping them away
Cinnamon essential oil: Create a scent to prevent, fight mold, Ingredients in cinnamon essential oil have cinnamaldehyde, eugenol, safrole, furfural in which the main component is cinnamaldehyde (70-80%), which determines the resistance to microorganisms of cinnamon essential oil In addition, eugenol is also an ingredient capable of inhibiting the growth of bacteria and fungal fibers
CONCLUSION AND RECOMMENDATIONS
Conclusions
The research and production of aromatic candles from some essential oils obtained the following results
• The results of the study to optimize the proportion of wax and concentration of essential oils added to scented candles are as follows
- The beeswax/soy wax ratio is 1/9 - The wax melting point is 90°C - The amount of essential oils added is 3%, some essential oils have a light scent, I raise it to 5%
• From the results achieved in the above studies, complete the process of producing scented candles from some essential oils.
Recommendations
Due to limited research time, limited internship time, there are many unfinished jobs In the coming time, I propose to carry out further research with the following contents:
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