Regarding some reported antimicrobial properties of tannins; Zymomonas mobilis was used to obtain ethanol from tannin-reduced carob pod extract (TR-CPE). Culture of 50 ml volume containing 7.5 g sugar at pH 5.5 and 0.03 g bacterial inoculums with shaking at 80 rpm was used. Using response surface methodology (RSM), the maximum ethanol concentration of 5.34 % w/v (higher than that reported earli...

Antiviral activity has been demonstrated for different tannin-rich plant extracts. Since tannins of different classes and molecular weights are often found together in plant extracts and may differ in their antiviral activity, we have compared the effect against influenza A virus (IAV) of Hamamelis virginiana L. bark extract, fractions enriched in tannins of different molecular weights and indi...

Regarding some reported antimicrobial properties of tannins; Zymomonas mobilis was used to obtain ethanol from tannin-reduced carob pod extract (TR-CPE). Culture of 50 mL volume containing 7.5 g sugar at pH 5.5 and 0.03 g bacterial inoculums with shaking at 80 rpm was used. Using response surface methodology (RSM), the maximum ethanol concentration of 5.34 % w/v (higher than that reported earli...

BACKGROUND Compounds present in green tea have proved to inhibit the growth and activity of bacteria associated with infections. OBJECTIVES To assess the effects of green tea leaves extract in presence of propylene glycol on the aerobic mouth bacteria load. MATERIALS AND METHODS Saliva of 25 volunteer girl students aging 20-25 years were selected and evaluated by a mouthwash sample containi...

background compounds present in green tea have proved to inhibit the growth and activity of bacteria associated with infections. objectives to assess the effects of green tea leaves extract in presence of propylene glycol on the aerobic mouth bacteria load. materials and methods saliva of 25 volunteer girl students aging 20-25 years were selected and evaluated by a mouthwash sample containing 1...

Herbal medicines are respected for its medicinal values through generations. Areca catechu is commonly called as betel nut belonging to the family Arecaceae. Phytochemicals are the non-nutritive substances that protect the plant and human beings from diseases when consumed. In the present investigation, the aqueous extract of Areca catechu nut was analysed for the varieties of phytochemicals an...

Tannins are water-soluble polyphenolic compounds found in plants as secondary metabolites. The presence of these substances in the barks of eight different plants was initially examined and their crude extracts were used separately as a substrate for production of tannase through submerged fermentation by Bacillus licheniformis KBR6. Tannase production as well as biodegradation of the substrate...

BACKGROUND OF THE STUDY As a widely used traditional medicine, Galla Chinensis is rich in tannins. However, there are few detailed studies about pharmaceutical preparations of Galla Chinensis tannin extract (GTE). In the present experiments, for better application and to investigate the possibility that Galla Chinensis tannin extract can be used as an antidiarrheal drug, we prepared Galla Chine...

Feeding more tannin and less crude protein (CP) to dairy cows may have synergistic impacts on reducing NH emissions from dairy barns. Three trials using lab-scale ventilated chambers with concrete floors were conducted to determine the impacts on NH emission of tannin and CP feeding, tannin feeding on urease activity in feces, and tannin application directly to the barn floor. For Trial 1, mixt...

The effect of commercially available chestnut and mimosa tannins in vitro (experiment 1) or in vivo (experiment 2) on the growth or recovery of Escherichia coli O157:H7 or generic fecal E. coli was evaluated. In experiment 1, the mean growth rate of E. coli O157:H7, determined via the measurement of optical density at 600 nm during anaerobic culture in tryptic soy broth at 37 degrees C, was red...