an in vivo experiment was conducted to study the effects of probiotic bacillus coagulans spores, with and without prebiotic, inulin, on gastrointestinal (gi) microbiota of healthy rats and its potentiality to survive in the gi tract. forty-eight male wistar rats were randomly divided into four groups (n=12) and fed as follows: standard diet (control), standard diet supplied with 5% w/w long cha...

Benzalkonium bromides (BAK) are an important class of cationic surfactants with both industrial and commercial uses. They are used as preservatives for ophthalmic, nasal and parenteral products and they are also used as a topical antiseptic and medical equipment disinfectant. In this work a universal method for the preparation of these compounds is described. Using quaternization of N,N-dimethy...

The heterologous expression of DNA extracted directly from environmental samples (environmental DNA [eDNA]) in easily cultured hosts provides access to natural products produced by previously inaccessible microorganisms. When eDNA cosmid libraries were screened in Escherichia coli for antibacterially active clones, long-chain N-acyltyrosine-producing clones were found in every eDNA library. The...