核农学报2025，Vol.39Issue(8)：1744-1753,10.DOI:10.11869/j.issn.1000-8551.2025.08.1744
新琼寡糖处理对百香果采后品质及糖和有机酸代谢的影响
Effects of Neoagaro-Oligosaccharide Treatment on Postharvest Quality of Passion Fruit and Metabolisms of Sugar and Organic Acid
摘要
Abstract
Neoagaro-oligosaccharide(NAOS)is a promising regulator on postharvest fruit quality,but the physiological mechanism related to the preservation effects remains unclear.To investigate the effects of NAOS treatment on the appearance quality and physiological properties in golden passion fruit stored at 25℃,the golden passion fruit cv.Qinmi No.9 was treated with 180 mg·L-1 NAOS and distilled water(control),and the changes of main carbohydrate and organic acid contents,as well as activities of relevant enzymes were analyzed.The results showed that NAOS treatment delayed the pericarp color change,pericarp browning and shrinking,maintained the high commercially acceptable fruit rate,and inhibited the respiration rate of passion fruit.Moreover,NAOS treatment reduced the acid invertase activity,inhibited the activities of neutral invertase and sucrose synthetase in decomposition direction,and increased the activities of sucrose synthetase in synthesis direction and sucrose phosphate synthase,thereby increasing the contents of sucrose and glucose in passion fruit.Likewise,NAOS treatment restrained the activities of pyruvate dehydrogenase,pyruvate kinase and succinate dehydrogenase,and improved the citrate synthase activity,increasing the contents of pyruvic acid,citric acid,succinic acid,fumaric acid and malic acid in passion fruit.Therefore,NAOS treatment could regulate the activities of enzymes involved in sugar and organic acid metabolisms via inhibiting the respiration rate,and maintain the high levels of sugar and organic acid,thereby delaying the nutrient consumption and appearance quality deterioration of harvested passion fruit.This study provides theoretical basis for the mechanism of NAOS treatment maintaining postharvest quality of passion fruit,and offers the technical reference for developing the preservation technology based on NAOS.关键词
百香果/新琼寡糖/糖代谢/有机酸/采后劣变Key words
passion fruit/neoagaro-oligosaccharide/sugar metabolism/organic acid/postharvest deterioration引用本文复制引用
林育钊,吴慧娟,罗振宇,陈东晓,陈洪彬,陈莲,曾菊英,张珅..新琼寡糖处理对百香果采后品质及糖和有机酸代谢的影响[J].核农学报,2025,39(8):1744-1753,10.基金项目
福建省海洋藻类活性物质制备与功能开发重点实验室开放基金(2022-KF10),福建省自然科学基金面上项目(2023J01902),龙岩市科技计划重点项目(2023LYF9025),泉州师范学院引进人才科研启动项目(H23026) （2022-KF10）
