以酵母提取粉为营养剂，盐酸半胱氨酸为抗氧化剂，蔗糖为冷冻干燥保护剂时，海藻酸微囊菌体存活率（人工肠液4h）最高，可达7.59×108cfu/g。
The survival of bifidobacteria-loaded alginate microcapsules can get to 7.59 × 108cfu / g ( in simulated intestinal fluid for four hours ), when yeast extract , cystein · Hcl and sucrose were added .
酵母营养剂