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.
人类通过研究,作为好奇而得到产
,已开发了
制自然过程
系统。其中之
是通过
制(也包括促进)微
长来保藏食
。