responses of lactic acid bacteria towards specific environmental stresses

... Profile of Susceptibility to Antimicrobials and Antagonist Activity of Lactic Acid Bacteria with Probiotic Potential Isolated from Artisanal Coalho Cheese of the Sertão Region of the State of ... due to the transfer of resistant genetic material to the bacteria of the microflora of the human gastrointestinal tract (Marthur e Singh, 2005) The lactic acid group of bacteria are the most ... region of the State of Paraiba, from the Trang 3micro-region of the municipality of Catolé do Rocha-PB (Figure 1) Activation of the selected species The selected species of lactic acid bacteria

Ngày tải lên: 14/01/2020, 03:53

... activity of lactic acid bacteria on mold strains Fig.2 Effect of the acidity of the MRS medium on the growth of different mold strains Trang 10Fig.3 Antifungal activity of lactic acid bacteria ... supernatant of pH 7 The values of the pH of end of culture varied between 3.6 and 4.7 were in fact an illustration of the amount of acid (lactic acid, acetic acid) present in the medium These organic acids ... http://www.ijcmas.com Antifungal activity of lactic acid bacteria in food preservation is one of the technological properties sought The antifungal effect of lactic acid bacteria has been studied Four

Ngày tải lên: 14/01/2020, 04:58

... manufacture of rusip Fermentation of rusip is usually a spontaneous process involving lactic acid bacteria (LAB) with palm sugar as a source of carbohydrates Genus of lactic acid bacteria involved ... normal flora at the time of fermentation Studies have demonstrated that lactic acid bacteria are part of the normal intestinal microbiota in fish Presence of Lactic acid bacteria in the raw materials ... use of starter cultures would be an appropriate approach for the control and optimization of the fermentation process Role of Lactic acid bacteria (LAB) in food preservation Presence of Lactic

Ngày tải lên: 06/08/2020, 01:38

... Data analysis result of the research Trang 53.1.2 Investigation of lactic acid production ability of isolated bacterial strains The amount of lactic acid were produced by 19 bacterial strains in ... 2.2.2 Investigation of lactic acid production ability of isolated bacterial strains Each strain of bacteria was cultured in 15 mL MRS broth at 37 ° C for 24 hours and the lactic acid content was ... flasks containing 90 mL of sterilized physiological saline, shake 150 rpm at 37 ℃ for 1,5 hours Isolation of lactic acid bacteria: Lactic acid bacterias from samples of “mam sac chua” and “com

Ngày tải lên: 28/06/2021, 10:41

... larger, convex colonies with a distinct acidic smell are also common among lactic acid bacteria. 2.4.2 Common features of lactic acid bacteria Lactic acid bacteria exhibit various morphological ... metabolism process compared to other lactic acid bacteria isoforms. Some strains of heterofermentative lactic acid bacteria OVERVIEW OF HYDROPEROXIDE AND BACTERIOCIN DURINGLactic fermentation effectively ... addition to lactic acid production also produces polysaccharide mucus It is the process of converting sugar into lactic acid by microorganisms, typically lactic acid bacteria Lactic fermentable bacteria

Ngày tải lên: 16/12/2021, 04:53

... 1: Isolation of some strains of lactic acid bacteria that can be used in secondary production 3.5.1.1 Method of isolation and selection of lactic bacteriaTo cultivate lactic acid bacteria from ... using lactic acid bacteria Two samples were analyzed concurrently: one sample of tofu made with lactic acid bacteria and another sample produced using plaster.The method of enumeration of total ... Method of isolation and selection of lactic bacteriaTo cultivate lactic acid bacteria from yogurt and fermented soy milk, a sample was prepared by mixing 20 mL of solution with 100 mL of MRS

Ngày tải lên: 16/12/2021, 16:15

... health of consumers 2.4.1 General overview Lactic bacteria are Gram-positive bacteria, no spore-forming, non-mobile, capable of fermenting sugars to create lactic acid The lactic acid bacteria ... lactic acid production also produces polysaccharide mucus 2.4.3 Lactic fermentation It is the process of converting sugar into lactic acid by microorganisms, typically lactic acid bacteria Lactic ... glucose metabolism process is more complicated than isoforms of lactic acid bacteria Trang 295-Some strains of heterofermentative lactic acid bacteria Lactobacillus brevis: Found mainly in pickled

Ngày tải lên: 17/12/2021, 06:18

... 1: Isolation of some strains of lactic acid bacteria that can be used in secondary production 3.5.1.1 Method of isolation and selection of lactic bacteria To cultivate lactic acid bacteria from ... are larger, round, and milky convex in shape, often accompanied by a distinct acidic odor. 2.4.2 Common features of lactic acid bacteria Lactic acid bacteria exhibit notable morphological differences, ... to specific microorganisms Lactic acid bacteria synthesize hydroperoxide in the presence of oxygen, contributing to its formation during fermentation.Lactic acid bacteria require a source of

Ngày tải lên: 02/04/2022, 16:51

... appearance These bacteria are often characterized by their distinct acidic smell, which is a key indicator of their presence. 2.4.2 Common features of lactic acid bacteria Lactic acid bacteria are ... microbial safety of tofu, highlighting the potential benefits of lactic acid bacteria in enhancing product safety and antibacterial effectiveness.The method of enumeration of total aerobic bacteria is ... be used in tofu production Content 2: Selection of bacteria with good ferment ability for application in tofu production 3.5.1 Content 1: Isolation of some strains of lactic acid bacteria that

Ngày tải lên: 16/02/2023, 14:40

... Collection of samples 17 3.2.2 Isolation of lactic acid bacteria 17 3.2.3 Storage of isolated bacteria 17 3.2.4 Screening of Lactic acid bacteria 17 3.2.5 Screening of antimicrobial activity of ... Objective of research 2 Chapter ii Literature review 3 2.1 Lactic acid bacteria 3 2.1.1 Lactic acid bacteria 3 2.1.2 Bacteriocins of lactic acid bacteria 4 2.1.3 Application of bacteriocin ... Characterization of bacteriocin: effect of enzymes (proteolytic enzymes, amylase), heat stability, pH sensitivity Trang 11CHAPTER II LITERATURE REVIEW 2.1 LACTIC ACID BACTERIA 2.1.1 Lactic acid bacteria Lactic

Ngày tải lên: 14/11/2018, 00:07

... with a 24 hr old lactic acid bacteria culture and incubated at 37°C for 72 hr Bio-chemical changes in pH, TSS, acidity, antioxidant activity, total phenol content and lactic acid bacterial survival ... and without kokum juice fermented by lactic acid bacteria reduced the pH and enhanced the acidity, antioxidant activity, total phenol content Lactic acid bacterial population reduced during storage ... indicator The appearance of light pink colour indicated the end point The values were expressed in terms of citric acid and lactic acid as per cent titrable acidity of beverages (Anon., 1984)

Ngày tải lên: 29/05/2020, 11:08

... experiment of sucrose fermentation of lactic acid bacteria and Dang Thi Hong Nhung (2010) in experiment on Cocoa fermentation 3.4 Study of the tolerant temperature of lactic acid bacteria The ... day of fermentation Figure 24 The total acid as lactic acid generated by the time of the 9 isolates Trang 20The figure 24 shows that all of the isolates were capable of producing lactic acid ... isolates - The total acid as lactic acid generated by time - The results of total acid as lactic acid are shown in Table 4 and Figure 24 Trang 18Total acid as lactic acid by days Treatment Trang 191=LAB

Ngày tải lên: 14/06/2022, 09:47

... growth of pathogenic microor-ganisms including both chemicals and biological approaches [23] Among the green strategies, the employment of antag-onistic bacteria, particularly lactic acid bacteria ... 100 g of fresh weight (mg TE 100 g−1) 2.6.5 Simultaneous Analysis of Organic Acids and Sugars. Organic acids and sugars were extracted homogenizing 15 g of fresh pineapple tissue with 15 mL of ultrapure ... presence of probiotic bacteria (Figures2(b)and2(c)) 3.2 Quality Evaluation At the time of processing, pineapples had solid soluble content equal to 12%, juice pH of 3.52, and titratable acidity of

Ngày tải lên: 02/11/2022, 10:41

... Trang 241.3.3.1 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 ... work of the biotechnological production of lactic acid are listed in Table 1 Table 1 Microorganisms used in the recent work of biotechnological production of lactic acid Microorganisms Lactic acid ... cycle of microorganisms in batch fermentation 1.3.3 Lactic acid microorganisms Bacteria and fungi are the two groups of microorganisms that can produce lactic acid.17 While most of the lactic acid

Ngày tải lên: 16/10/2015, 11:57

... and evaluation of efficient lactic acid and phosphate solubilizing bacterial consortia on growth of spinach The efficient lactic acid bacteria and standard phosphate solubilizing bacteria (Bacillus ... of Oat and Arhar Influence of efficient lactic acid and phosphate solubilizing bacterial consortia on growth of Spinach Germination percentage and number of leaves The efficient lactic acid ... Discussion Isolation and characterization of lactic acid bacteria Out of five different milk and milk products collected for the studies, as many as 5 lactic acid bacterial isolates were obtained and

Ngày tải lên: 21/05/2020, 21:46

... energy diagram of the dehydration of lactic acid into acrylic acid over dimeric metal complexes inside an ideal pore based on a hierarchical model of BEA zeolite The adsorption of lactic acid is endothermic ... adsorption of lactic acid is endothermic in the case of Sn-BEA, slightly endothermic in ideal Fe-BEA and exothermic in the case of a hierarchical Fe-BEA catalyst The dehydration of lactic acid into ... The dehydration of lactic acid into acrylic acid requires the subtraction of hydrogen from the carbon (methyl group) and the hydroxyl group from the carbon (Figure 6a) Lactic acid has three

Ngày tải lên: 27/05/2020, 04:12

... regulate the mucosal immune responses upon a variety of stimuli, including lactic acid bacteria (LAB) LAB are a group of related bacteria that produce lactic acid as a result of carbohydrate fermentation ... THE ROLES OF LACTIC ACID BACTERIA IN HOST INFLAMMATORY RESPONSES WANG SHUGUI (B.Sc., Sun Yat-Sen University) A THESIS SUBMITTED FOR THE DEGREE OF PHILOSOPHY OF DOCTORATE DEPARTMENT OF MICROBIOLOGY ... 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 microorganisms...

Ngày tải lên: 13/09/2015, 19:50

... 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 equilibrium ... 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 phase towards the ... lactic acid present in a surface liquid layer with known dimensions, the adapted model describes the concentrations of cells and lactic acid in a liquid medium Microbial growth and lactic acid...

Ngày tải lên: 05/05/2014, 08:44

... Holzapfel WH: Lactic acid bacteria of foods and their current taxonomy International Journal of Food Microbiology 1997, 36:1-29 Ouwehand AC, Salminen S, Isolauri E: Probiotics: an overview of beneficial ... parameters were followed as described Evaluation of peripheral white blood cell counts At the end of the prophylactic protocol of mouse ACD, the blood of each mouse was taken and white blood cell ... diminution of PMN extravasation in the ear of mice The diminution of neutrophils extravasation as suggested by blood PMN counts was confirmed by the reduction of neutrophil content in ear of 62.4%...

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 ... hours 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 ... survive and grow at this pH The cause of the decrease in pH was due to the development of lactic acid bacteria that produced lactic acid Content of lactic acid produced from isolates from Ybio...

Ngày tải lên: 06/10/2015, 12:57