the importance of understanding the stress physiology of lactic acid bacteria

... reinforce the barrier function of the intestinal mucosa, helping in the prevention of the attachment of pathogenic microorganisms and the entry of allergens Alteration of the microbial flora of the ... group of related bacteria that produce lactic acid as a result of carbohydrate fermentation The production of lactic acid results a very low pH which is low enough to inhibit the growth of most other ... on the bacterial cell surface might mediate the adherence (Carlors et al., 1991) The determination of the structure of carbohydrates on bacterial surface is important for the understanding of their...

Ngày tải lên: 13/09/2015, 19:50

... medium and the buffering capacity of the medium are known The amount of undissociated lactic acid is then further related to the total amount of lactic acid LaHtot and the pH by the lactic acid chemical ... analysis of the model Some mathematical properties of the model are discussed, and an easy-to-use method to take into account the evolution of pH and undissociated lactic acid [LaH] in the medium ... explicitly depend on the concentrations of undissociated lactic acid [LaH] and hydrogen ions [H + ], originating from the lactic acid produced by the micro-organism Transition of the exponential growth...

Ngày tải lên: 05/05/2014, 08:44

... antimicrobial effect of organic acids lies in the reduction of pH, as well as the undissociated form of the molecules It has been proposed that the low external pH causes acidification of the cell cytoplasm, ... suggested that the major effect of bile acids would be the disaggregation of the lipid bilayer structure of the cell membrane Conjugated bile acids are less inhibitory than free bile acids (cholic ... at 41°C for 24 h The diameters of the holo zone on the agar plate were then measured The digesting capability of the tested strains was classified as positive when the diameters of clear zone were...

Ngày tải lên: 07/07/2014, 19:20

... bacterial culture Isolation of cholesterol-lowering lactic acid bacteria 393 Table Number of acid- and bile-tolerant lactic acid bacteria isolated from the human intestine for probiotic use Acida ... were formed on the BL media after 48hrs incubation, they were confirmed as the bacteria to have low pH tolerance [14] In order to assess bile salt tolerance of bacteria, the isolates of Streptococcus, ... about 50% in the MRS broth regardless the presence of bile salt These results showed that many LAB have a great cholesterol-lowering activity in the MRS broth regardless to the presence of bile salt...

Ngày tải lên: 07/08/2014, 18:20

... the application of 50 μL of oxazolone 5% (w/ v) in acetone on the right ear (25 μL each side of the ear) The second challenge was done days after the first challenge with the same procedure The ... week adaptation in the animal facility, the mice were separated in groups of 10 animals The grouping was randomized according to the weight of the rodents The murine model of ACD was based on ... at 20% In the prophylactic protocol (Figure 1B), the maximal reduction of ear thickness was in the order of 26% in the MPM group and 35% in the hydrocortisone group as compared to the water control...

Ngày tải lên: 11/08/2014, 08:21

... value of fruit juice fermented by lactic acid bacteria (LAB) Four isolates of lactic acid bacteria from mango were obtained The results of research showed that all 10 strains of lactic acid bacteria ... Count density of lactic acid bacteria: plate counting method Monitor the indicators: Brix, pH, level of lactic acid after fermentation and the density of lactic acid bacteria Analyze the data with ... (%) Note: The maximum score is The data were the average of sensory evaluators In short, from the results of pH, Brix, lactic acid content, the density of bacteria and the results of the sensory...

Ngày tải lên: 06/10/2015, 12:57

... select lactic acid bacteria and to study the favorable conditions of lactic acid fermented carrot juice with biological values The content of this study includes: - Isolation of lactic acid bacteria ... number of probiotic bacteria at the level of at least log CFU/mL The survival rate of all isolates at the level 10 of about 8.02-8.69 log CFU/mL of fermented carrot juice Addition, the result of lactic ... tolerance of isolates - Study on lactic acid fermentation ability of isolates in carrot juice - Identification of the selected lactic acid bacteria by molecular technique - Study on the effect of dilution...

Ngày tải lên: 06/10/2015, 13:04

... temperature for the growth and development of acid lactic bacteria When inoculum level was log cells/mL, the acid concentration was higher than others at 37ºC At this level of inoculum, the acid concentration ... hours of fermentation, pH decreased from 4.52 to about 3.23 – 4.31 At this pH, lactic acid bacteria could remain The pH decreased because due to the production of lactic acid during development of ... organic acids,… Dragon fruit juice is a suitable medium for lactic acid bacteria to produce new probiotic products Therefore, the study “Fermentation of dragon fruit juice by lactic acid bacteria ...

Ngày tải lên: 06/10/2015, 13:04

... into lactic acid inhibited the bacterial growth and development Besides, lactic acid itself could inhibit the development of bacteria (Nguyen Thi Hien, 2006) In contrast, the treatment of 15 9% of ... (p

Ngày tải lên: 06/10/2015, 13:05

... of lactic acid 1.3 Production of lactic acid 1.3.1 Chemical synthesis 1.3.2 Fermentation 1.3.3 Lactic acid microorganisms 1.3.3.1 Lactic acid bacteria 1.3.4 Metabolic pathways of lactic acid bacteria ... 11.0 30 1.3.3.1 Lactic acid bacteria Lactic acid bacteria (LAB) are a group of related bacteria that produce lactic acid as major product.31 LAB have the property of producing lactic acid from carbohydrates ... by lactic acid bacteria with the formation of equimolar amounts of lactic acid and acetic acid In the xylose metabolic pathways of microorganisms, xylulose is the key intermediate Xylose is either...

Ngày tải lên: 16/10/2015, 11:57

... with other cancer therapies Targeted therapy is the newest form of treatment that is developed based on human knowledge about the molecular aspect of cancer biology Targeted therapy is the use of ... are tumors of solid tissues, consisting of two types: carcinomas and sarcomas Carcinoma is the cancer of the epithelium lining inside and outside of the organ (5) Sarcoma is the cancer of connective ... block the activity of critical protein molecules involved in the growth, spread and death avoiding machinery of cancer (12) The main advantage of targeted therapy is that they focus to the specific...

Ngày tải lên: 20/06/2016, 23:20

... THE STUDY The thesis consists of five chapters The first chapter is the introductory part of this research and it talks about the objectives of the study and definition of key words The second ... review helps to get a better understanding of the research topic Therefore, the most suitable method in this case, were the aim of our thesis is to indicate the importance of customer based-brand ... indicate the importance of customer based brand equity on consumer perceptions of brand The purpose of the questionnaire is to help find out consumers opinion about the product and services of the...

Ngày tải lên: 24/09/2012, 17:19

... surgical patients the rate of MET review exceeded the death rate for virtually the entire duration of the study In contrast, for medical patients, the death rate exceeded the rate of MET review [22] ... unexpected deaths [24] This further supports the view that the more preventive intervention by an emergency team is delivered, the lower the number of cardiac arrests The dose of the Rapid Response System ... care expertise Thus, the ‘dose’ of therapy may differ between institutions according to team composition and expertise This aspect of the RRT is one of the least studied areas of RRS research It...

Ngày tải lên: 25/10/2012, 10:06

... at the carpal-metacarpal joint at the base of the thumb The report stated that the radiographs were otherwise normal The patient's symptoms worsened with increased pain and swelling over the ... in the wrist due to gout [6,8,9] The prevalence of gout in the USA ranges between 0.5–2.8% in men and 0.1–0.6% in women [2] The prevalence rises to 4.4% of men and 1.8% of women over the age of ... in part to the continuous aging of the population as well as the widespread use of diuretics for treatment of hypertension [4] Gout is a clinical syndrome caused by the deposition of monosodium...

Ngày tải lên: 25/10/2012, 10:06

... know the benefit of having the connection of their latrines to biogas plants At the installation, the community agreed to share the 20% of the installation cost and the 100% of cleaning cost of ... because the people were involved from the beginning of the installation and they understood the benefit of the option from the combination of hygiene education and their experience from the test ... increased the proportion of the installation cost sharing This is because the people were involved from the beginning of the installation and they understood the benefit of the option from the combination...

Ngày tải lên: 05/09/2013, 09:08

... by training them to listen to each other using non-verbal responses only Research shows that there is a strong link between the amount of eye contact people receive and their degree of participation ... as listen to them, particularly while they are performing tasks Look for signs of being bored or being lost Encourage your learners to make eye contact while they are working together in pairs ... group communication in the number of turns taken in a group conversation for example The NLP approach to eye contact is holistic and individualistic, but is soundly based on the premise that good...

Ngày tải lên: 06/09/2013, 10:10

... 64% Other (Specify) 0% None of the above (DO NOT READ) 4% Don’t know/Not sure (DO NOT READ) 3% Do you think it takes a lot of money for a woman to have the kind of clothes, hair ... first day on the job • The majority of Americans not believe it takes a lot of money for a woman to make a good impression at work Two-thirds (65%) of Americans not believe it takes a lot of money ... half (59%) of Americans believe a ppeara nce is a fa ctor, while 36% b elieve ap pearan ce is not a factor Five percen t of Ame ricans are not sure of any if the s tateme nts are true • The m ajority...

Ngày tải lên: 18/10/2013, 14:15

Ngày tải lên: 22/12/2013, 22:17

... harmony among the people It is therefore important to know the policy of the newspaper that one reads In general, however, the newspaper tries to report as accurately as possible, for there are various ... magazines and periodicals competing with the newspaper to provide accurate information on world developments, and it is the newspaper that links us with the outside world ...

Ngày tải lên: 22/12/2013, 22:17

... công, nông dân lồng ghép phần kĩ thuật vào hệ thống canh tác Kĩ thuật áp dụng phần, thay đổi tuỳ theo nhu cầu nông dân kĩ quản lý hưởng lợi từ kĩ thuật Một ví dụ tốt kĩ thuật nông – lâm canh tác ... xanh cho trồng Ví dụ Rwanda, nông dân không cắt tỉa vào thời điểm mà nhà nghiên cứu đưa ra, mà cắt theo lịch riêng họ cho dê ăn Những cành dài sử dụng để làm cột cho đậu leo Các nhà khoa học không...

Ngày tải lên: 16/01/2014, 21:20