期刊
SCIENTIA HORTICULTURAE
卷 307, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scienta.2022.111490
关键词
Youhou; Calcium; Firmness; Fruit softening; Pectin degrading enzyme
类别
This study investigated the effect of calcium treatment on the firmness of persimmon fruit from the perspective of water-soluble pectin (WSP). The results showed that calcium treatment increased the fruit firmness and decreased the WSP content. Additionally, the lower activity of pectin degrading enzymes delayed the degradation of WSP and maintained the firmness of the fruit. Furthermore, calcium treatment also delayed water migration and further maintained the firmness of persimmon fruit.
Persimmon fruit is a typical respiratory climacteric fruit. Previous studies have found that water-soluble pectin (WSP) was closely related to fruit firmness, and calcium was involved in pectin bridging, which also affected fruit firmness. In this research, the effect of calcium treatment (2% CaCl2, 30 min) on persimmon fruit firmness was studied from the perspective of WSP. Firmness of persimmon fruit treated with calcium increased by 40% and the WSP content decreased by 14% after storage for 15 d Meanwhile, the activity of pectin degrading enzymes polygalacturonase (PG), pectin methylesterase (PME) and pectin lyase (PL) decreased by 39%, 24%, and 11%, respectively. Fruit firmness was negatively correlated with the WSP content and activity of pectin degrading enzymes. Therefore, the lower pectin degrading enzyme activity delayed the decrease of the WSP molecular weight and branching rate, and inhibited the increase of WSP content, thus maintaining the integrity of cell wall structure and higher firmness of persimmon fruit. Additionally, calcium treatment could delay the water migration in the cell wall and vacuole, further maintaining persimmon fruit firmness. The results of this research not only help reveal the mechanism of persimmon fruit softening, but also provide reference for the application of calcium in persimmon fruit preservation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据