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Effect of pH,water activity and preservative concentration on growth of microorganisms in pound cake model system
Author(s): HU Shengqun, QIAN Ping, HU Xiaosong, HE Jinfeng
Pages: 94-
96
Year: 2006
Issue:
5
Journal: SCIENCE AND TECHNOLOGY OF FOOD INDUSTRY
Keyword: 奶油蛋糕; 模拟培养基; 微生物;
Abstract: 研究了水分活度(0.88,0.93),pH(6,7,8),抗菌剂浓度(0,0.02%,0.2%)对奶油蛋糕中微生物生长的影响.将微生物接种在不同条件的蛋糕模拟培养基上,观察微生物的生长状况.结果表明,微生物生长速度随水分活度升高而加快,当培养基pH到8时微生物生长不受抗菌剂浓度的影响;当pH在6~7时,随着抗菌剂浓度的升高,微生物生长受到明显抑制.另外,以上的结果在不同的微生物间没有显著差别.
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