Bài tập cho môn seminar 1 nghiên cứu về lợi ích và tác hại của cà phê trong môi trường sinh viên Viện Đào tạo quốc tế trường đại học hàng hải việt nam. II.Literature ReviewCoffee is a brewed drink prepared from roasted coffee beans, which are the seeds of berries from the coffee plant. The genus Coffee is native to tropical Rica, Madagascar, and the Comoros, Mauritius and Reunions in the Indian Ocean. The plant was exported from Africa to countries around the world and coffee plants are now cultivated in over 70 countries, primarily in the equatorial regions of the Americas, Southeast Asia, India, and Africa. The two most commonly grown are the highly regarded Arabica, and the less sophisticated but stronger and hardier Robusta. Once ripe, coffee berries are picked, processed, and dried. Dried coffee seeds (referred to as beans) are roasted to varying degrees, depending on the desired flavor. Roasted beans are ground with near boiling water to produce coffee as a beverage
Advantages and disadvantages of drinking coffee for ISE students NGUYEN Thi Thuy Duong GMA0303 Student ID: 49874 Date of Birth: 23-October -1994 Supervised by Ms Nguyen Thi Thu Huyen Abstract Coffee is not just a product or commodity but a culture familiar intimacy of each person Vietnam is one of the largest coffee exporters in the world with exclusive bouquet of coffee flavors Every morning millions of people worldwide use coffee to sober maintain sanity and strengthen the working capacity Besides the pros, drinking coffee also has some harmful effects if we are not used properly Starting from the demand for coffee growing communities in the ISE, the purpose of this article is to identify why students use more coffee ISE and benefits as well as the harmful effects of coffee in these students Based on collected from online surveys, paper can provide coffee demand of students ISE as well as some recommendations to help them adjust healthy Keywords: Coffee, Advantages of coffee, Disadvantages of coffee, caffeine I Introduction Modern life is increasingly more human emotional needs After each breakfast, or every evening, most people have the habit of drinking a cup of coffee to start your day or help comfort them forget sleepiness Coffee is a popular drink nowadays It is not only refreshments but also helps people feel excited Every day to drink a cup of coffee is good for health, it can prevent some diseases Go for coffee is an extremely delicate habit of our Vietnamese people In addition to culinary matters is purely a cafe concert brought many emotions, we can help people understand and appreciate each other more It would be interesting if the romantic and sipping delicious cup of coffee inside gentle love songs and deep The anger, envy, blame is removed, the rest that love and sympathy more in life Besides many benefits, if you drink too much coffee, it also brings some harmful effects Coffee is a stimulant so it’s very addictive for people who drink a lot In addition, it also causes anxiety, irritability if not used for coffee The researchers found that women who drink more coffee per day susceptible to infertility than women who not drink or drink less coffee a day Coffee is not just popular for the middle class, but now, there are so many young people liked to drink coffee Drinking coffee is very popular with ISE students They can bring to the class to drink at break time, they can drink in the coffee restaurant together, they use drink coffee to study… To learn about the benefits and harms of coffee, I did a survey with students of ISE From there, find the pros and cons of coffee, the effect of coffee drinking on ISE students Thereby, from this study can help you protect your health II Literature Review Coffee is a brewed drink prepared from roasted coffee beans, which are the seeds of berries from the coffee plant The genus Coffee is native to tropical Rica, Madagascar, and the Comoros, Mauritius and Reunions in the Indian Ocean The plant was exported from Africa to countries around the world and coffee plants are now cultivated in over 70 countries, primarily in the equatorial regions of the Americas, Southeast Asia, India, and Africa The two most commonly grown are the highly regarded Arabica, and the less sophisticated but stronger and hardier Robusta Once ripe, coffee berries are picked, processed, and dried Dried coffee seeds (referred to as beans) are roasted to varying degrees, depending on the desired flavor Roasted beans are ground with near boiling water to produce coffee as a beverage The fact that coffee contains good stuff does not necessarily mean that it’s good for us, says James D Lane, PhD, professor of medical psychology and behavioral medicine at Duke University Medical Center in Durham, N.C “It has not really been shown that coffee drinking leads to an increase in antioxidants in the body,” Lane tells WebMD “We know that there are antioxidants in large quantities in coffee itself, especially when it’s freshly brewed, but we don’t know whether those antioxidants appear in the bloodstream and in the body when the person drinks it Those studies have not been done.” Regular coffee, of course, also contains caffeine Caffeine can raise blood pressure, as well as blood levels of the fight-or-flight chemical epinephrine (also called adrenaline), Lane says Besides the effect is easy to see, coffee has some unwanted damage Coffee in caffeine, like any habit, drinking coffee can lead to addiction to coffee Also because the caffeine in coffee, it can stimulate the central nervous system causing anxiety and restlessness Coffee is a beverage also causes insomnia Coffee also causes anxiety, restlessness, and distraction Therefore, drinking more coffee will take a lot of money and time of people III Research methodology This research paper is based on survey, documents and finding information on internet, newspapers The primary data is investigated by a questionnaire to obtain information from respondents This is the main method of investigation used with an audience of student who study in International Study Education The questions are based on the information related to learning about age, time drinking coffee, thinking about the effects and harms of coffee The survey was carried out with 150 ISE students To clarify the purpose and mission of the research study, I used two main research methods which are methods of study documents and survey Using the combination of different methods such as synthesize, analyze, evaluate, compare to research documents that are related to the study contents of topic This is an important method which helps me understand the topic in different aspects The purpose of using the survey is to collect the date from the ISE students who are the objects of the topic An online questionnaire survey was conducted to get the information All the data is collected and represented through tables and charts By analyzing these data and tables, we can find out advantages and disadvantages of drinking coffee to ISE students; from that, drawing knowledge to help them protect their health and become smart consumer IV Results and Discussion Drinking coffee habits in ISE With advantages such as easy mixing with other beverages, can drink anytime, anywhere, anytime desired, coffee is gradually becoming familiar drink to young people today It is clearly to be seen that there is an increasing number of the coffee shops and coffee take away with a certain number of guests Along with modern life, the demand for drink activities is more and more, the coffee is an option for many people The result of my survey on the groups of ISE students is that both males and females are enjoying drinking coffee to meet the demand of relax and making friends The numbers of participants of both genders are likely similar which accounted for 54% and 46% The numbers of ages which accounted for 74.6% from 18 to 25 years old, 17.5% under 18 years old and 7.9% for people who over than 25 years old It is obviously that drinking coffee is regular with all people About the evaluation of ISE students about the times they choose to drink coffee, the results are represented through the below pie chart Figure 1: Time to drink coffee of ISE students Source: Author Most of students in ISE drink coffee whenever they want (54.2%) There are only a small number of remaining drinking coffees in a fixed time This found that coffee is a drink easy to drink, can drink anytime Precisely because there is no fixed time to drink coffee, it is easy to make harm for health In addition, when surveyed about the number of times a week for coffee, I get very surprising results are presented in the following chart Figure 2: Times to drink coffee per week Source: Author According to the chart, up to 19.5% of students use coffee and coffee based drinks daily 16.1% use Coffee 3-4 times a week Also, 28.1% use coffee 1-2 times a week The collected data proves that there are many students drink coffee, and these numbers may increase in the future Coffee has become a familiar beverage indispensable in the daily life of students Advantages of drinking coffee to ISE students The result of my survey about the advantages of drinking coffee in ISE students are represented through below the pie chart Figure 3: Advantages of drinking coffee Source: Author Most of people think that making people awake is the most important advantage of drinking coffee Having 73% person who this survey agree with this opinion Coffee, with caffeine content obviously has ability to keep you awake A cup of coffee when tired can help you maintain hours awake Specifically, after the caffeine will be absorbed under the blood vessels to the brain and it will block the transmission of a substance called adenosine – which is produced when neurons burned, and more substances are production, nervous system becomes tired Outstanding ability of caffeine is disguised as the shape and size of Adenosine and into the receptors without stimulating them So caffeine has “lock” an effective way of receptors which helps the brain is in a state of “alert” but if you use too much will cause a Non-greasy Many clinical trials in humans have shown that the brain absorbs the caffeine will improve ordinary witness better performance as storage memory, emotional control In addition, the increased ability to react to information and enhance public awareness – in other words coffee helps you smarter Through research, British scientists say the caffeine in coffee has the ability to alter the electrical activity of brain cells This finding has been of scientists from the University Birmingham (UK) announced Generally, the activities of nerve cells play a major role in the process of receiving information, but this process with the participation of a brain chemical, adenosine, with particularly high levels in the elderly When adenosine associated with the receiving agency molecule on brain cells, called A1, will reduce the activity of neurons, affecting memory But caffeine can prevent the links on adenosine, thus limiting its effects and enhance memory With the findings, the researchers confirmed that regular coffee drinking can increase memory up to times, because caffeine focus on the brain There are 16% people agree with coffee is also an antioxidant Our bodies are constantly under attack by the reactive molecules called “free radicals.” These molecules have electrons (e) no neutralization can damage important cellular structures such as proteins and DNA This is where antioxidants in We donate electrons to free radicals, disable them effectively This is believed to protect against aging and disease caused by partial oxidation, including cancer In addition, antioxidants may have many other biological effects and are considered very important for overall health It is interesting that coffee contains a huge amount of powerful antioxidants, may raise a few examples, such as acids and polyphenols hydrocinnamic Hydrocinnamic acids are effective in neutralizing free radicals and preventing oxidation significantly Most people consume about 1-2 grams of antioxidants per day mainly from coffee and tea In the diet of people in the West, beverages actually supply of antioxidants is much bigger than the food In fact, 79% of the antioxidants from beverages, while only 21% comes from food In one study, scientists have examined the antioxidant composition of different foods according to dietary Coffee is ranked eleventh in the list, after a couple of different berries In studies in Norway and Finland, the source of coffee showed the greatest antioxidant, providing about 64% of the total amount of antioxidants In this study, the average amount of coffee used is 450-600 ml / day, or 2-4 cups / day In addition, researchers from Spain, Japan, Poland and France are concluded so far as supply of coffee antioxidants in the diet most In addition, drinking coffee is good for sickness 11% people agree with this opinion Coffee is one of the beverages are widely consumed in the world Currently, the ratio of the average coffee consumption per day in the world is one and a half cup; in the US alone, this ratio is above 3.5 and more than 50% separation Americans drink cups daily As one of the items of business to be the most in the world, produced in more than 60 countries and brings the total annual retail sales of over 70 billion dollars, coffee and more and more research has been identified is related to reducing the risk of some diseases, especially liver disease and diabetes Coffee helps prevent cardiovascular disease, hypertension, diabetes, thanks to the useful components in coffee beans as a small amount of minerals and antioxidant substances Disadvantages of drinking coffee to ISE students About the evaluation of disadvantages of drinking coffee about ISE students, the results are represented through the below pie chart Figure 4: Disadvantages of drinking coffee to ISE students Source: Author It is evident that insomnia is the most disadvantage of drinking coffee The figure shows that the proportion of people who suffers the situation of sleepless is accounted for around 43% Israeli researchers have found that drinking a cup of caffeinated coffee at the end of the afternoon would make you more difficult to go to sleep than normal, even sleepless and rolling on the bed The reason is that this drink reduces the concentration of melatonin – a hormone that helps the human brain goes to sleep LotanShilo and his team at the Sapir Medical Center, Tel Aviv University, conducted comparing the effects of drinking caffeinated coffee and decaffeinated coffee in the afternoon in volunteers Results after taking a cup of genuine coffee shows: Length of sleep every night is 336 minutes (79 minutes versus reduced after drinking a cup of coffee) The time it takes to fall asleep for 30 minutes, double than normal The rolling while sleeping is greater than normal In the second phase of the experiment, the volunteers were woken hours to get the urine They measured the levels of 6-sulphoxymelatonin, of melatonin breakdown product in urine The results showed that the concentration of coffee when it’s less than times the coffee using fake According to ShiloLotan, could caffeine inhibits\ N-acetyltransferase production, an important enzyme involved in the metabolism of melatonin Professor Chris Idzikowski, director of the Sleep Assessment Advisory in London said, people with insomnia to his hospital examination are advised to stop drinking coffee after noon He said: “Normally, the body must take 2-3 hours to metabolize caffeine and reduce the concentration of this substance in the brain, but if you drink too much coffee at once, the blood will take more time to decompose Drink plenty of strong coffee can cause caffeine to stay in people 15 hours “ According to him, this new study reinforces the notion that, if someone had problems with sleep, they must stop for coffee in the afternoon Professor Ian Hindmarch, University of Surrey – who performed many studies on the effects of drugs on the brain – that everyone’s response to irritants is very different This depends a lot on the mental state at the time of start using stimulants According to him, drinking coffee at a time when the brain is awake will not cause irritation which makes efficient user reassurance Conversely, if used when the brain is relaxed in the evening, coffee can cause suffering to all awake Why coffee causes insomnia? Of caffeine as coffee or tea alkaloid, caffeine is ranked along with cocaine and amphetamine group, stimulants heading CNS Drinks with caffeine are the most widely used worldwide When drinking beverages containing caffeine, caffeine in the gastrointestinal tract cannot be destroyed, rapidly absorbed through the intestinal lining into the blood (in pregnant women caffeine absorbed through the placenta into the fetal blood) When caffeine on the brain it increases the secretion of norepinephrine, neurotransmitters increase, rising stimulate the heart and circulation of blood vessels, stomach, intestines, kidneys In addition, Coffee contains caffeine can be addictive so is understandable, with people who have the habit of using cup of coffee per day at a certain time and just at that moment if the body does not drink coffee lazily yawned see short-term and miss cafe Coffee can be addictive Having 37% people who survey agree with this But that’s not addictive cafe, coffee addicts who drink to the psychological addiction depends on coffee and drink with the number growing every day This syndrome may include a variety of disorders such as stress, anxiety, heart palpitations, fatigue, insomnia, impotence, menstrual disorders, hypertension, and stomach ulcers With these objects, the advice given is that drinking vegetable juice variety, hard campaign to avoid dependence on coffee With this approach helps detoxify both increases alkalinity in the body help people overcome addictions Sometimes, drinking coffee make people feeling worry Caffeine can stimulate the central nervous system causing anxiety and restlessness Drinking more than four cups of coffee a day can cause damage to the adrenal glands, reducing the resistance of the nerves in stressful situations and make you more susceptible to disease Additionally, coffee has some minor damage such as causing dehydration The coffee you drink, but you might not know coffee is diuretic beverages, capable of stimulating the production of urine Therefore, if you drink too much coffee it will lead to produce a lot of urine, causing you to lose water leads to dehydration in the body Coffee is harmful to the stomach For coffee in highly acidic, therefore if you drink much, much acid in the body leads to the reaction is not good for the stomach, which can cause discomfort, abdominal pain, and indigestion And if you drink a lot of coffee and continuously it can lead to diseases such as arthritis, stomach ulcers And with women, Affect Fertility: If the coffee is too much abuse it would be very harmful for the body, it causes one series relating to the reproductive function, excessive drinking can even cause infertility If women are in pregnancy, it can lead to affect the weight of the child To ISE students, spending too much time on drinking coffee also has bad consequences on learning With same time, we can many exercises, learn about current events in the country and internationally, spending time with family, cleaning house I did a survey about the money for drinking coffee received the results Figure 5: Money spent for drinking coffee in one time Source: Author It is obviously to be seen that ISE students spend much money for one time of drinking coffee With students, with many times, it can lead to the greater amount of money spent on drinking coffee Therefore, drinking more coffee also takes much money from students V Conclusion Today, in some countries it is considered to have coffee as a drink popular and served with fruit or fruit cake In Vietnam, coffee is a popular drink, especially in the morning In fact, there are many different opinions about coffee Some people say that drinking coffee is unhelpful; some people claim that benefit which depends on the thoughts and actions of every person In conclusion, coffee is neither completely beneficial nor completely harmless Therefore, you should be aware of the strengths and weaknesses of coffee to adjust, so that both can enjoy these beverages long without facing the health problems it causes For healthy behavior of drinking coffee, ISE student should drink coffee with a suitable amount of caffeine, no special phase, and drink coffee in the morning, after breakfast For who want to lose weight, it is a taboo when drinking coffee with cream, or milk They should only drink black coffee with a little sugar For people with a history of stomach problems, they strictly have to avoid drinking coffee, even if noncaffeine also still affects the status of the disease Instead of drinking coffee regular and spend a lot of money, ISE students should save money and save time for another things and try to enjoy other drinks which is helpful for health such as tea, milk or juices Although coffee is a good drink, but not so that we get too much coffee, because coffee drinking will cause more harm to the body Therefore, this article helps you understand some of the harmful effects of coffee and how to enjoy properly You should follow the recommendations to have a mental clarity, and good health References [1] Bigenki (no date) Cà phê nguồn cung cấp chất chống ô xy hóa Available at: http://songkieunhat.com/ca-phe-la-nguon-cung-cap-chat-chong-o-xy-hoa (Accessed: 15 July 2016) [2] Archcafé (2015) Lợi hại uống cà phê - Archcafé - authentic Vietnamese coffee Available at: http://www.archcafe.net/vn/360-ca-phe/ca-phe-cuocsong/loi-va-hai-khi-uong-ca-phe/ (Accessed: 16 July 2016) [3] (No Date) Available at: http://meovat9.com/mot-so-tac-hai-cua-ca-phe-va-cachthuong-thuc-dung-cach.html (Accessed: 15 July 2016) APPENDIX BẢN KHẢO SÁT VỀ TÁC DỤNG VÀ TÁC HẠI CỦA VIỆC UỐNG CÀ PHÊ ĐẾN SINH VIÊN ISE Là sinh viên nhận thức ảnh hưởng cà phê đến giới trẻ, định chọn đề tài nghiên cứu tác động cà phê Từ đó, hiểu thói quen sử dụng cà phê mức độ ảnh hưởng đến giới trẻ cung cấp số đề xuất để có thói quen uống cà phê lành mạnh, mang lại lợi ích cho sức khỏe Những thông tin mà bạn cung cấp cho giúp tìm hiểu rõ khía cạnh Nếu bạn có thắc mắc trình khảo sát, đừng ngần ngại, liên hệ với qua email: thienthancuatoi.2988@gmail.com Cảm ơn hợp tác bạn Giới tính bạn ¨ Nam ¨ Nữ Độ tuổi bạn ¨ Dưới 18 tuổi ¨ Từ 18 đến 25 tuổi ¨ Từ 25 tới 45 tuổi ¨ Trên 45 tuổi Bạn có thích uống cà phê hay đồ uống làm từ cà phê không? ¨ Có ¨ Không Thời gian bạnuống cà phê ngày gì? ¨ Sáng (6-9h) ¨ Chiều (14h – 17h) ¨ Tối (19h-22h) ¨ Thích uống lúc uống Số lần bạn uống cà phê tuần ¨ Hàngngày ¨ – lần/tuần ¨ – lần / tuần ¨ Khác Bạn thường tiêu tiền cho buổi cà phê? ¨ 15,000 – 25,000 VNĐ ¨ 25,000 – 50,000 VNĐ ¨ 50,000 – 100,000 VNĐ ¨ Trên 100,000 VNĐ ¨ Khác Theo bạn, tác dụng cà phê gì? ¨ Giúp tỉnh táo ¨ Chống ô xi hóa ¨ Tốt cho tim mạch ¨ Dễ gây nghiện ¨ Gây cảm giác lo lắng, bồn chồn ¨ Gây ngủ Bạn có nhận thức lợi ích tác hại cà phê không? ¨ Có ¨ Không 10