南京师大学报（自然科学版）2023，Vol.46Issue(4)：21-28,8.DOI:10.3969/j.issn.1001-4616.2023.04.005
泡核桃青果贮藏期间生理指标响应
Response of Physiological Index during the Storage of Juglans sigillata Dode.Walnut with Husk
摘要
Abstract
The oxidation state of walnut with husk was analyzed during the low-temperature storage.Juglans sigillata Dode was used as the test material,the superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),lipoxygenase(LOX),polyphenol oxidase(PPO)activity and malondialdehyde(MD A),soluble protein(SP),reducing sugar(RS),VE,flavonoids,total phenol(TP)content changes were studied.The results showed that SOD and POD activity increased firstly and then decreased,and the enzyme activity was higher at 10 d of storage that was[(858.38±27.41)U/g fresh weight],and[(142.70± 4.29)U/g fresh weight],which was reduced by 44.40％and 54.02％compared with 70 d.CAT,LOX,and PPO activity showed wavy changes,the CAT activity was higher at 40 d of storage that was[(809.12±43.20)nmol(min·g)-1 fresh weight],the LOX activity was higher at 20 d of storage that was[(161.74±4.05)U/g fresh weight],the PPO activity was higher at 10 d of storage that was[(66.97±4.81 U/g fresh weight];The MDA content was slowly increased,the RS content was higher at 10 d of storage that was[(69.39±2.34)mg/g fresh weight],the VE content was higher at 10 d of storage that was[(619.47±38.46)μg/g].The SP content showed a trend of decreasing firstly,and then increasing,and the content of flavonoids and total phenol(TP)showed a trend change of"N"type;Correlation analysis showed that storage time showed a very significant negative relationship with SOD and RS(r=-0.91,-0.90,P＜0.01),and storage time showed a very significant positive relationship with MDA and SP(r=0.94,0.89,P＜0.01),some indicators showed a significant/very significant positive/negative correlation;The results of the principal component analysis showed that many physiological indicators such as SOD,POD,CAT,and LOX were closely related to fruit quality,and could be used as an important indicator to evaluate degree of oxidation of walnut with husk.The above results provided basic data for walnut with husk storage in folk freezer.关键词
泡核桃/贮藏/生理指标/响应Key words
Juglans sigillata Dode/storage/physiological indicators/response分类
轻工纺织引用本文复制引用
梁美,王纪辉,胡伯凯,刘亚娜,耿阳阳,张时馨,曾亚军,何佳丽,杨光..泡核桃青果贮藏期间生理指标响应[J].南京师大学报（自然科学版）,2023,46(4):21-28,8.基金项目
贵州省科技计划重点项目(黔科合支撑[2022]重点014号)、贵州省木本粮油加工科技创新人才团队平台项目(黔科合平台人才[2020]5003)、贵州省林业厅优秀青年人才培养专项资金项目(黔林科合J[2018]16号). （黔科合支撑[2022]重点014号）
