Abstract: The present invention relates to chrome-free fermentation products, which are obtained by the fermentation of Saccharomyces cerevisiae. The fermentation products of the invention may effectively control the level of blood sugar, and useful to improve the normal metabolism of glucose and increase glucose tolerance when administered to non-insulin-dependent diabetes (NIDD) patients.

Abstract: The present invention relates to a process for preparing chito-oligosaccharide material by the enzymatic hydrolysis of chitinous materials, such as chitin, chitosan, and squid pen. The results of cell experiment showed that the oligosaccharide material of the invention causes a decrease in survival rate of U937 cell (a human leukemia cell line) to 69-57%; and of CT26 (a mouse rectal carcinoma cell line) to 69-57%. The product of the invention is preferably in form of tablet, capsule, powder, and granules. It may be added to any kind of foods as a nutriment, which is administered orally as an anti-tumor auxiliary.