|Table of Contents|

Response of Physiological Index during the Storage of Juglans sigillata Dode. Walnut with Husk(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2023年04期
Page:
21-28
Research Field:
化学
Publishing date:

Info

Title:
Response of Physiological Index during the Storage of Juglans sigillata Dode. Walnut with Husk
Author(s):
Liang Mei1; 2; Wang Jihui1; 2; Hu Bokai1; 2; Liu Yana1; 2; Geng Yangyang1; 2; Zhang Shixin1; 2; Zeng Yajun1; 2; He Jiali2; Yang Guang3
(1.Guizhou Institute of Walnut,Guiyang 550005,China)
(2.Guizhou Academy of Forestry,Guiyang 550005,China)
(3.Guizhou Sunshine Food Company Limited,Bijie 551600,China)
Keywords:
Juglans sigillata Dode;  storage;  physiological indicators;  response
PACS:
TS255.1
DOI:
10.3969/j.issn.1001-4616.2023.04.005
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(MDA),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.

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Last Update: 2023-12-15