Inner Mongolia Shuangqi Pharmaceutical Co. Ltd.

An at. fluorescence spectrometer (AFS) method was developed for the determination of selenium in selenium-enriched Bifidobacterium preparationThe instrument condition, sample disposal, acidity and interferential ion were studied.The linear range was 0-400 ng/mL^-1 (r = 0.9993).The detection limit of the sample was 0.11 ng/mL^-1 with RSD of 0.68% (n = 11).The recoveries (n = 4) were 91.4-101.5%.The proposed method is convenient and highly sensitive.

The aim is to explore the regulatory effect of soybean lecithin on serum lipids in rats.50 Male Wistar rats were fed with conventional food for 5 days and then randomly assigned into five groups according to serum TC level, namely low dose group, medium dose group, high dose group, hyperlipidemia group and neg. control group resp.All animals except the controls were fed with high-fat diet, at the same time soybean lecithin was administered orally to all the animals (10mL/kg).After 30 days the animals were weighed and blood samples were collected for anal. of blood lipid level.Compared with hyperlipidemia group, 1.2g/(kg·BW) and 2.4g/(kg·BW) dose of soybean lecithin significantly reduced the serum TC level of hyperlipidemia rats(P<0.05).Soybean lecithin can regulate(lower) the level of serum lipids in rats.

In this article, we introduced the optimization of high d. fermentation process of Streptococcus thermophilus.Starting with the optimization of culture medium, the pros and cons of single factor anal. method and orthogonal testing method were discussed.Then the optimization of culture condition and fermentation process such as the pH, temperature, agitator speed, inoculating quantity, and incubation time was described.Finally, the post-treatment process of bacteria including cooling treatment, ultrasound treatment, as well as centrifugation and lyophilization was introduced.