Effect of Some Fermentation Substrates and Growth Temperature on Exopolysaccharide Production by Streptococcus Thermophilus BN1

Bennama, Rabha; Nadra, Rechidi-Sidhoum; Bensoltane, Ahmed

doi:10.7763/ijbbb.2012.v2.67

Cited by 16 publications

(22 citation statements)

References 22 publications

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“…Each strain has its own optimal temperature for cell development and EPS production. S. thermophiles BN1 synthesized EPS highest at temperature of 37 °C [16]. However, in the study of L. De Vuysta et al [17], the optimal temperature for EPS production of S. thermophiles was at 42 °C.…”

Section: Effect Of Incubation Temperature On Eps Production Of L Plamentioning

confidence: 90%

OPTIMAL CONDITIONS FOR EXOPOLYSACCHARIDE PRODUCTION BY Lactobacillus plantarum T10

Khánh

2018

JST

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Exopolysaccharide (EPS) production ability of Lactobacillus plantarumT10 was studied. The supplement of some sugars (lactose, saccharose, and glucose) gave the positive effects on EPS production of L. plantarum T10, in which the addition of lactose 4 % resulted in the most efficiency for EPS yield (274.83 µg/mL). The addition of 0.4 % of yeast extract into culture medium with 4 % lactose provided the highest EPS yields compared to other nitrogen sources (peptone, beef extract), which were 378.32 mg/mL. The optimal conditions for EPS production of L. plantarum T10 in MRS broth with 4 % of lactose and 0.4 % yeast extract supplement were also studied. The results indicated that the highest EPS yield (417.11 mg/L) was obtained in the conditions of 10 6 CFU/ml initial cell density, temperature of 35 o C, pH 5.5 and 48 h incubation.

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Section: Effect Of Incubation Temperature On Eps Production Of L Plamentioning

confidence: 90%

OPTIMAL CONDITIONS FOR EXOPOLYSACCHARIDE PRODUCTION BY Lactobacillus plantarum T10

Khánh

2018

JST

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“…EPS production is determined by the growth stage of bacteria, composition of culture medium (type of carbon and nitrogen sources, and presence of other nutrients), temperature, and pH, and/or by the presence of adjuvant microflora [2,3,62,72,82,86,92,93] (Tab. I).…”

Section: Factors Affecting Exopolysaccharides Synthesis By Lactic Acimentioning

confidence: 99%

“…Ample studies have addressed the effect of culture medium composition on the concentration of EPS produced by LAB [69,72,82,86,92]. The Lb.…”

Section: Factors Affecting Exopolysaccharides Synthesis By Lactic Acimentioning

confidence: 99%

Exopolysaccharide-Producing Lactic Acid Bacteria – Health-Promoting Properties And Application In The Dairy Industry

Berthold-Pluta

Pluta

Garbowska

et al. 2019

Postępy Mikrobiologii - Advancements of Microbiology

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Exopolysaccharides (EPS) are one of the classes of extracellular biopolymers synthesized by bacteria. Some strains of lactic acid bacteria (LAB) used in the dairy industry are able to synthesize EPS (EPS(+) strains). EPS may be secreted by a cell in the form of capsule or slime. Our review describes the factors influencing the activity of EPS production by LAB, the impact of the use of EPS(+) strains on the quality of fermented milk products (yoghurt, cheeses, etc.) and pro-health properties of EPS produced by LAB. The capability to synthesize EPS by LAB depends on many factors, e.g., affiliation to species and characteristics of strain, growth stage, composition of culture medium (type of carbon and nitrogen sources, and presence of other nutrients), temperature, pH, and presence of adjuvant microflora. The presence of EPS synthesized by LAB strains has a significant effect on changes in various properties of dairy products, including: yoghurt, kefir and many other fermented milk drinks, sour cream and cheeses. The EPS act as thickening, emulsifying and gelling agents, hence the use of EPS(+) strains may become a certain alternative to the use of thickeners in, e.g., fermented milks. During formation of a casein milk curd, EPS are able to bind water and thus reduce syneresis. The high water holding capacity of EPS has a positive effect on increasing viscosity and improving texture of low-fat cheeses. EPS are claimed to have health-promoting properties, like: anticarcinogenic, antioxidative, immunomodulatory and reducing blood cholesterol. 1. Wstęp. 2. Ogólna charakterystyka egzopolisacharydów. 3. Czynniki wpływające na wytwarzanie egzopolisacharydów przez bakterie kwasu mlekowego. 4. Wpływ egzopolisacharydów na jakość fermentowanych produktów mlecznych. 4.1. Wpływ EPS na jakość jogurtów. 4.2. Wpływ EPS na jakość innych fermentowanych napojów mlecznych. 4.3. Wpływ EPS na jakość serów. 5. Zdrowotne właściwości egzopolisacharydów. 6. Podsumowanie

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“…One study by Pawar., et al [25] reported the maximum EPS production of 5 gm/l by one isolate predicted as Alpha Proteobacterium group, obtained from saline soil, suggesting that different ecological environment may possess different diversity of such EPS-producing bacteria and their EPS producing capability may differ according to the type of bacteria and even the strains. In addition, the EPS production largely depends on the substrate composition and environmental conditions [26].…”

Section: Phenotypic and Biochemical Characterization Of The Epsproducmentioning

confidence: 99%

Exopolysaccharide (EPS) Producing Isolates from Sugarcane Field Soil and Antibacterial Activity of Extracted EPSs

Patel¹,

Shah²,

Dwivedi³

2018

acta scient microb

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Keywords: Exopolysaccharides (EPSs); Bacterial EPS; Antibacterial Activity Microbial exopolysaccharides (EPSs) are reported to possess unique physiological activities including anti-microbial, anti-tumor, and anti-inflammatory. The antimicrobial activities of EPS could be used as a potential source for the development of antimicrobial drugs and may have various industrial, pharmaceutical and medical applications. The present study was aimed to isolate efficient EPS producing bacteria from sugarcane field soil and to evaluate the antibacterial activity of EPSs. Total 9 EPS producing isolates were obtained out of which, KPEP3 and KPEP4 were found to be higher producers of EPS. The isolates were able to grow at different pH but EPS production was higher at pH 6. The maximum carbohydrate content was found in KPEP3 and minimum protein content was found in KPEP4 suggestive of their probable use in medicine due to less immunogenicity. The evaluation of antibacterial activity of EPS suggested that all 4 test microorganisms (E. coli, B. cereus, B. subtilis and V. cholerae) showed sensitivity against EPSs but the sensitivity varied from one microorganism to another. The KPEP3 and KPEP4 EPSs were found to exert higher antibacterial activity on diverse test organisms. EPSs concentration of 7.5 mg/ml was found to be effective for antibacterial activity. The MIC values of EPSs suggested that they can be used at lower concentration to inhibit test organisms. The biochemical characterization indicated that these isolates may belong to genera: Bacillus and Pseudomonas. Further research is necessary to elucidate the composition and efficacy of the EPSs by using in vitro and in vivo animal model studies. AbbreviationsExopolysaccharides (

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Effect of Some Fermentation Substrates and Growth Temperature on Exopolysaccharide Production by Streptococcus Thermophilus BN1

Cited by 16 publications

References 22 publications

OPTIMAL CONDITIONS FOR EXOPOLYSACCHARIDE PRODUCTION BY Lactobacillus plantarum T10

OPTIMAL CONDITIONS FOR EXOPOLYSACCHARIDE PRODUCTION BY Lactobacillus plantarum T10

Exopolysaccharide-Producing Lactic Acid Bacteria – Health-Promoting Properties And Application In The Dairy Industry

Exopolysaccharide (EPS) Producing Isolates from Sugarcane Field Soil and Antibacterial Activity of Extracted EPSs

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