Availability of Oxygen-The degree of anaerobiosis is a principal factor controlling fermentations. with yeasts. when large amounts of oxygen are present, yeast cell production is promoted.
人类通研究,作为好奇而得到的产物,已开发了一批
自然
程的系
。
之一
是通
(也包括促进)微生物的生长来保藏食物。