苹果果实香气产生过程中氨基酸和脂肪酸含量及一些相关酶活性的变化

被引:24
作者
乜兰春
孙建设
邸葆
机构
[1] 河北农业大学园艺学院
关键词
苹果; 香气; 氨基酸; 脂肪酸; 脂氧合酶; 醇-酰基转移酶;
D O I
暂无
中图分类号
S661.1 [苹果];
学科分类号
摘要
研究了苹果果实成熟期间香气和乙烯的产生动态,以及游离氨基酸、游离脂肪酸含量和脂氧合酶(LOX)、醇-酰基转移酶(AAT)活性的变化。结果表明,果实香气物质是随着乙烯释放的增加而产生和增加的。在此过程中,异亮氨酸大量积累。游离脂肪酸在果实香气很少时呈增加趋势;随着香气产生的增多而迅速下降;乙烯高峰过后又有增加。脂氧合酶活性随着果实成熟而提高,其活性在乙烯释放达到高峰时达到最大值,之后迅速下降。醇-酰基转移酶活性在果实开始产生香气时迅速增加,之后保持较高活性。
引用
收藏
页码:663 / 667
页数:5
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