Some novel triazolo [1,5-a]pyridine (4-6), thiazolo[3,2-a]pyridine (7), thiazolo[3,2-a]pyrimidines (9, 11), oxoimidazo[1,2-a]pyrimidine (10), and pyrimido[2,1-b]quinazoline (12) have been synthesized. The structures of target compounds were confirmed by elemental analyses and spectral data. The antimicrobial activity of some of the target synthesized compounds were tested against various microorganisms such as Salmonella typhimurium, Pseudomonas aeruginos and Staphylococcus aureus (bacteria), Aspergillus flavus (fungus), and Candida albicans (yeast fungus) by the disc diffusion method. In general, the novel synthesized compounds showed a good antimicrobial activity against these microorganisms.
Prebiotics are being implicated in gut health maintenance, colitis prevention, cancer inhibition, immunepotentiaton, cholesterol removal, reduction of cardiovascular disease and prevention of obesity and constipation. It was found that barley had a great positive effect on viability and enhanced the growth of bifidobacterium group. This search acts as a trial to produce some functional nectars using the technological preparations of barley Talbina as prebiotic sources. Strawberry, guava and mango nectars were supplemented with classic and instant barley Talbina by 5% and 7%, respectively, as prebiotic sources. The results revealed the capability of the classic and instant Talbina to enhance the bacterial growth of highly beneficial bacteria as Bifidobacterium langium, Lactobacillus acidophilus and L. palantarum. Data showed that addition of both instant and classic Talbina increased protein, carbohydrates, fiber, βglucan, viscosity, TSS and pH and slightly decreased acidity of nectars. The results recommend that addition of the classic or instant Talbina to the nectars did not affect the sensory properties of these fruit nectars.
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