Vater activity(3)水分话度aw Reaction rate 反应速率 Growth of: Lipid oxydation油脂氧化 Moulds霉菌 Yeasts酵母 Bacteria细菌 Enzymatic activity 酶的活力 Non-enzymatic Browning非酶羯变 0.10.20.30.40.50.60.70.80.9 A 窗田20 Water activity (3) 水分活度a w 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Aw Reaction rate 反应速率 Lipid oxydation 油脂氧化 Non-enzymatic Browning 非酶褐变 Enzymatic activity 酶的活力 Growth of: Moulds 霉菌 Yeasts 酵母 Bacteria 细菌