现代食品科技2017，Vol.33Issue(5)：103-108,6.DOI:10.13982/j.mfst.1673-9078.2017.5.017
不同成熟度杏果实采后细胞壁物质代谢规律的研究
Studies of the Patterns of Cell Wall Material Metabolism in Postharvest Apricot Fruits at Different Degrees of Maturity
摘要
Abstract
In order to explore the changes in the metabolism of cell wall materials in postharvest apricot fruits with different degrees of maturity,Xinjiang "Saimaiti" apricot fruits were analyzed in this study.According to the yellowing rate,the fruits were classified into three different stages of maturity:Ⅰ (colored area:＜50％),Ⅱ (colored area:50～80％),and Ⅲ (colored area:＞80％).These fruits were stored at 4℃ with 90～95％ relative humidity (RH) and several related physiological indices were determined every seven days.The results showed that the content of water-soluble fraction (WSF) of pectin and cyclohexane diaminotetraacetic acid (CDTA)-soluble fractions (CSF) of pectin and cellulose were in the order of maturity stage Ⅰ ＜ maturity stage Ⅱ ＜ maturity stage Ⅲ,while the content of sodium bicarbonate-soluble and sodium hydroxide-soluble fractions of pectin were in an order of maturity stage Ⅰ ＞ maturity stage Ⅱ ＞ maturity stage Ⅲ.From maturity stage Ⅰ to stage Ⅲ,the lignin content and the activities of polygalacturonase (PG),pectin methylesterase (PME),β-glucosidase (β-G),and cellulase (Cx) showed a downward trend after the initial increase.However,at the end of storage,the cellulose content and the PG and PME activities of the apricot fruits at maturity stage Ⅱ were lower than those at stages Ⅰ and Ⅲ (p ＜ 0.05),and the lignin content at stage Ⅱ was higher than that at stages Ⅰ and Ⅲ (p＜0.05).The fruit firmness and Cx activity of apricot fruits at maturity stage Ⅱ were significantly higher than those of the fruits at maturity stages Ⅰ and Ⅲ.These results suggested that maturity stage Ⅱ could be selected as a suitable maturity stage for postharvest storage of apricot fruits.关键词
杏果实/成熟度/软化/细胞壁物质Key words
apricot fruits/maturity/softening/substances of cell wall material引用本文复制引用
敬媛媛,杨婷婷,马玄,闫有明,朱璇..不同成熟度杏果实采后细胞壁物质代谢规律的研究[J].现代食品科技,2017,33(5):103-108,6.基金项目
国家自然科学基金资助项目(31460414) （31460414）
公益性行业(农业)科研专项(201303075) （农业）
