茉莉酸甲酯处理对采后荔枝贮藏品质及糖代谢的影响  

Effects of methyl jasmonate treatment on storage quality and sugar metabolisms of postharvest litchi

作　　者：殷菲胧 帅良 刘涵 梁园丽 蔡文[1] 廖玲燕 宋慕波 刘云芬 何妹英 YIN Feilong;SHUAI Liang;LIU Han;LIANG Yuanli;CAI Wen;LIAO Lingyan;SONG Mubo;LIU Yunfen;HE Meiying(College of Food and Biological Engineering,Guangxi Key Laboratory of Health Care Food Science and Technology,Hezhou University,Hezhou 542899,China;College of Chemistry and Food Science,Nanchang Normal University,Nanchang 330023,China)

机构地区：[1]贺州学院食品与生物工程学院,广西康养食品科学与技术重点实验室,广西贺州542899 [2]南昌师范学院化学与食品科学学院,江西南昌330023

出　　处：《食品与发酵工业》2025年第6期239-248,共10页Food and Fermentation Industries

基　　金：贺州学院博士后启动基金(349000075);2023年自治区级大学生创新创业训练计划项目(S202311838098)。

摘　　要：荔枝美味且有营养,但贮藏寿命短。为探究茉莉酸甲酯(methyl jasmonate,MeJA)处理对荔枝贮藏过程中品质及糖代谢的影响,该研究分别以10、50、100μmol/L的MeJA处理‘桂味’荔枝作为处理组,并以清水处理为对照组,观察荔枝低温贮藏过程中的可溶性固形物含量、好果率、可溶性糖含量、有机酸含量、抗氧化物含量等贮藏品质以及糖代谢相关酶活性的变化。结果表明,不同浓度的MeJA均可以有效维持采后荔枝的贮藏品质,其中50μmol/L MeJA效果最佳。同时也发现,MeJA处理可以显著抑制酸性转化酶、中性转化酶和蔗糖合成酶的酶活性(P<0.05),同时显著提高蔗糖磷酸合成酶的酶活性(P<0.05),进而维持较高的蔗糖含量和贮藏品质,延长货架期。该文可为未来MeJA在采后荔枝及其他果蔬贮藏中的应用提供理论依据。Litchi(Litchi chinensis Sonn.)is delicious and nutritious,but it has a short shelf life.To explore the effects of methyl jasmonate(MeJA)treatment on the quality and sugar metabolisms of litchi during storage,10μmol/L,50μmol/L,and 100μmol/L MeJA treatments were applied to Guiwei litchi as the treatment groups and distilled water treatment was used as the control group(CK).The changes in soluble solids content,good fruit rate,soluble sugar content,organic acid content,antioxidant content,and enzyme activity related to sugar metabolisms were observed during low-temperature storage.Results showed that different concentrations of MeJA could maintain the storage quality of postharvest litchi,and 50μmol/L MeJA had the best effect.At the same time,it was also found that MeJA treatment could significantly inhibit the enzymatic activities of acid invertase,neutral invertase,and sucrose synthase(P<0.05),and significantly increase the enzymatic activity of sucrose phosphate synthase(P<0.05),to maintain high sucrose content and storage quality and prolong the shelf life.This study can provide a theoretical basis for the future application of MeJA in the storage of litchi and other fruits after harvest.

关 键 词：荔枝 茉莉酸甲酯 贮藏品质 糖代谢 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]