Bacteriocins produced by L. fermentum and L .acidophilus can inhibit cephalosporin resistant E .coli.

Riaz, Saba; Nawaz, Syed Kashif; Hasnain, Shahida

doi:10.1590/s1517-83822010000300015

Cited by 27 publications

(24 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical Density at 600nm 18 The optical density was measured by using UV-Visible spectrophotometer (Shimadzu Analytical Pvt. Ltd, Japan) at 600 nm.…”

Section: Phmentioning

confidence: 99%

Investigation of Oligosaccharides for Prebitoic Action on Vaginal Lactobacilli

Mahore¹,

Rohit²,

Deshkar³

2017

JYP

View full text Add to dashboard Cite

Objective: Vaginitis is a very common gynaecological problem in women of all age groups resulted in millions of visit to physician. Decrease in vaginal Lactobacilli is one of the reasons of Bacterial vaginitis. Approach that could improve decreased level of Lactobacilli and inhibit growth of pathogenic bacteria can be alternative to antibiotic therapy. Oligosaccharides influence the growth of Lactobacilli species and benefits vaginal ecosystem. The present study was designed to evaluate prebitoic potential of oligosaccharides in vaginitis. Methodology: The potential of oligosaccharides to stimulate the growth of three selected vaginal Lactobacilli strains was studied by optical density, pH, titrable acidity and dry mass after 48 h of incubation. The antimicrobial effect of vaginal Lactobacilli in presence of oligosaccharide against pathogenic bacteria E. coli and C. albicans was studied by agar diffusion method. Vaginal irritation test was studied on female Swiss albino mice. Results and Discussion: Increased lactic acid production and lowering of pH by Lactobacilli strains in presence of oligosaccharides confirmed that oligosaccharide can stimulate the growth of selected Lactobacilli species. Optical density and dry biomass was also increased during 48 h of incubation. Higher zone of inhibition was observed in presence of prebiotic compared to control (without prebiotic). Vaginal irritation study showed no significant changes. Conclusively, oligosaccharides supported the growth of selected strains and could restore bacterial environment.

show abstract

“…Optical Density at 600nm 18 The optical density was measured by using UV-Visible spectrophotometer (Shimadzu Analytical Pvt. Ltd, Japan) at 600 nm.…”

Section: Phmentioning

confidence: 99%

Investigation of Oligosaccharides for Prebitoic Action on Vaginal Lactobacilli

Mahore¹,

Rohit²,

Deshkar³

2017

JYP

View full text Add to dashboard Cite

show abstract

“…A common feature of these microorganisms is their antagonistic activity against some pathogens such as salmonella spp., Escherichia coli , Listeria monocytogenes , Clostridium perfringens and Helicobacter hepaticus 6, 7, 8, 9, 10, 11. The capability of L. plantarum and L. reuteri in phytic acid hydrolysis is valuable in bread processing technology 12 .…”

Section: Introductionmentioning

confidence: 99%

Growth kinetic models of five species of Lactobacilli and lactose consumption in batch submerged culture

Rezvani

Ardestani

Najafpour

2017

Brazilian Journal of Microbiology

View full text Add to dashboard Cite

Kinetic behaviors of five Lactobacillus strains were investigated with Contois and Exponential models. Awareness of kinetic behavior of microorganisms is essential for their industrial process design and scale up. The consistency of experimental data was evaluated using Excel software. L. bulgaricus was introduced as the most efficient strain with the highest biomass and lactic acid yield of 0.119 and 0.602 g g−1 consumed lactose, respectively. The biomass and carbohydrate yield of L. fermentum and L. lactis were slightly less and close to L. bulgaricus. Biomass and lactic acid production yield of 0.117 and 0.358 for L. fermentum and 0.114 and 0.437 g g−1 for L.actobacillus lactis were obtained. L. casei and L. delbrueckii had the less biomass yield, nearly 11.8 and 22.7% less than L. bulgaricus, respectively. L. bulgaricus (R2 = 0.9500 and 0.9156) and L. casei (R2 = 0.9552 and 0.8401) showed acceptable consistency with both models. The investigation revealed that the above mentioned models are not suitable to describe the kinetic behavior of L. fermentum (R2 = 0.9367 and 0.6991), L. delbrueckii (R2 = 0.9493 and 0.7724) and L. lactis (R2 = 0.8730 and 0.6451). Contois rate equation is a suitable model to describe the kinetic of Lactobacilli. Specific cell growth rate for L. bulgaricus, L. casei, L. fermentum, L. delbrueckii and L. lactis with Contois model in order 3.2, 3.9, 67.6, 10.4 and 9.8-fold of Exponential model.

show abstract

“…It has been reported by several authors that Lactobacillus species produce bacteriocins (Ahmed et al, 2010;Barefoot and Klaenhammer, 1983;Deraz et al, 2005;Kim and Gilliland, 1993;Leer et al, 1995;Muriana and Klaenhammer, 1991;Noonpakdee et al, 2009;Ogunbanwo et al, 2003;Rajaram et al, 2010;Riaz et al, 2010;Von Mollendorff et al, 2009;Vuyst and Leroy, 2007). In this study, a bacteriocin was produced by LRSU IV (isolated and characterized) was found to inhibit both Gram positive and Gram negative bacteria.…”

Section: Resultsmentioning

confidence: 63%