GENERAL HISTOLOGY

Detailed explanation-1: -Escherichia coli lives in symbiotic association in human intestine. They produces large quantities of vitamin K and B in human intestine. Was this answer helpful?

Detailed explanation-2: -The function of the colon is to absorb the water, minerals and vitamins that have not been absorbed by other parts of the part. The colon also contains bacterial cells (E. coli) that are responsible for producing essential vitamins such as vitamin K, B-12 and thiamin.

Detailed explanation-3: -Vitamin K (vit K), a fat-soluble vitamin, exists in some forms: vit K1 (phylloquinone), which is mainly found in green leafy vegetables, and vit K2 (menaquinone-n: MK-n), which is mainly found in fermented dairy and produced by lactic acid bacteria in the intestine [1, 2].

Detailed explanation-4: -Your microbiota also work as vitamin-production plants. Bacteria in the gut synthesize vitamins, and those that they don’t use are excreted to benefit their host. In humans, gut bacteria secrete vitamin B12 and a less familiar micronutrient called vitamin K.

Detailed explanation-5: -Probiotic bacteria, members of the gut microbiota, are able to synthesize vitamin K and most of the water‐soluble B vitamins, such as biotin, cobalamin, folates, nicotinic acid, panthotenic acid, pyridoxine, riboflavin, and thiamine, in humans [6].