| 冯美,张宁,张宏宝,刘听利,张锦涛.枸杞采后细胞壁组分及其降解酶活性的变化[J].干旱地区农业研究,2011,29(5):111~114 |
| 枸杞采后细胞壁组分及其降解酶活性的变化 |
| Changes in cell wall component and hydrolases in the fruit of Lycium barbarum during the postharvest period |
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| DOI：10.7606/j.issn.1000-7601.2011.05.20 |
| 中文关键词: 枸杞 采后 细胞壁组分 细胞壁降解酶 |
| 英文关键词:Lycium barbarum L. postharvest cell wall components cell wall-degrading-enzyme |
| 基金项目:宁夏自然基金资助项目“枸杞果实成熟软化过程中生理生化变化研究”（NZ0923） |
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| 中文摘要: |
| 将枸杞果实采后在室温下贮藏10 d，测定分析果实腐烂、细胞壁组分及果胶代谢酶类活性的变化。结果表明，采后2 d，果实开始腐烂，8～10 d腐烂最快。贮藏期间，可溶性果胶含量呈现先上升，后降低，最后又上升的趋势；离子型果胶含量呈逐渐上升趋势。两者含量与果实腐烂指数呈极显著正相关。共价结合的果胶含量呈现先降低，后上升，最后急剧降低的趋势，与果实腐烂指数呈负相关。纤维素、半纤维素含量均呈逐渐下降趋势，与果实腐烂指数呈
极显著负相关。PME活性呈逐渐下降趋势，与果实腐烂指数呈显著负相关。PG活性呈现先降低，后上升，最后又降低的趋势，与果实腐烂指数负相关。 |
| 英文摘要: |
| Lycium barbarum L. fruits were stored for 10 days in ambient temperature to study changes of fruit decay, cell wall components and activity of pectin-degrading enzyme in relation to their texture. The results show that fruit decay began decreasing 2 days after harvest and the most rapid period was 8～10 days after harvest. During the period of storage, the contents of water-soluble pectin (WSP) followed the high-low-high trending. and Ionic bond pectin increased. Significant positive correlation was observed between WSP, Ionic bond pectin and fruit decay index. The content of covalent bond pectin followed the low-high-low tr
ending, was negatively with fruit decay index. The contents of cellulose and hemicellulose were decreased, was significant positive correlation with fruit decay index. Pectinmethylesterase (PME) activity was decreased, was significant negatively correlation with fruit decay index. Polygalacturonase(PG) activity followed the low-high-low trending, was negatively correlation with fruit decay index. |
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