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Effects of nitric oxide treatment on the cell wall softening related enzymes and several hormones of papaya fruit during storage

文献类型: 外文期刊

作者: Guo, Qin 1 ; Wu, Bin 3 ; Chen, Weixin 1 ; Zhang, Yuli 2 ; Wang, Jide 2 ; Li, Xueping 1 ;

作者机构: 1.South China Agr Univ, Guangdong Prov Key Lab Postharvest Sci & Technol, Guangzhou 510642, Guangdong, Peoples R China

2.Xinjiang Univ, Coll Chem & Chem Engn, Minist Educ, Key Lab Oil & Gas Fine Chem, Urumqi, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Agroprod Storage & Proc, Urumqi, Peoples R China

关键词: Nitric oxide;papaya;softening;cell wall softening related enzyme;hormone

期刊名称:FOOD SCIENCE AND TECHNOLOGY INTERNATIONAL ( 影响因子:2.023; 五年影响因子:2.24 )

ISSN: 1082-0132

年卷期: 2014 年 20 卷 4 期

页码:

收录情况: SCI

摘要: Papaya fruits (Carica papaya L. cv Sui you 2') harvested with <5% yellow surface at the blossom end were fumigated with 60 mu L/L of nitric oxide for 3h and then stored at 20? with 85% relative humility for 20 days. The effects of nitric oxide treatment on ethylene production rate, the activities of cell wall softening related enzymes including polygalacturonase, pectin methyl esterase, pectate lyase and cellulase and the levels of hormones including indole acetic acid, abscisic acid, gibberellin and zeatin riboside were examined. The results showed that papaya fruits treated with nitric oxide had a significantly lower rate of ethylene production and a lesser loss of firmness during storage. A decrease in polygalacturonase, pectin methyl esterase, pectate lyase and cellulase activities was observed in nitric oxide treated fruit. In addition, the contents of indole acetic acid, abscisic acid and zeatin riboside were reduced in nitric oxide treated fruit, but no significant reduction in the level of gibberellin was found. These results indicate that nitric oxide treatment can effectively delay the softening and ripening of papaya fruit, likely via the regulation of cell wall softening related enzymes and certain hormones.

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