Hu Huali, Liu Dan, Li Pengxia
Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, China.
Engineering Laboratory for Horticultural Products Postharvest Treatment, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, China.
J Sci Food Agric. 2018 Mar;98(5):1977-1987. doi: 10.1002/jsfa.8681. Epub 2017 Nov 17.
During the postharvest senescence of fruits and vegetables, redox imbalance occurs. Although the release of methane (CH ) has been observed for a long time and its antioxidant properties have recently been demonstrated in animals and plants, the corresponding physiological role of CH in regulating plant senescence has not yet been elucidated.
Our results indicate that the postharvest deterioration of daylily buds during storage is greatly ameliorated by the exogenous application of CH , particularly in the inhibition of tissue browning. The results are supported by a decrease in the degree of browning and by the corresponding phenotype, which are correlated with the suppressed polyphenoloxidase activity. CH also maintains the re-establishment of redox balance, as indicated by the lower relative leakage rate, lipid peroxidation level, and reactive oxygen species accumulation in daylily buds. Furthermore, the decrease of the unsaturated/saturated fatty acid ratio and energy charge during storage was also attenuated.
These results clearly suggest that the postharvest treatment with CH is an effective means of prolonging the storage life of daylily buds. © 2017 Society of Chemical Industry.
在果蔬采后衰老过程中，会出现氧化还原失衡。尽管人们早就观察到甲烷（CH₄）的释放，且其抗氧化特性最近在动植物中得到了证实，但CH₄在调节植物衰老方面相应的生理作用尚未阐明。
我们的结果表明，外源施用CH₄可显著改善萱草花蕾采后贮藏期间的品质劣变，尤其是在抑制组织褐变方面。褐变程度的降低和相应的表型支持了这一结果，它们与多酚氧化酶活性的抑制相关。CH₄还维持了氧化还原平衡的重建，这表现为萱草花蕾中相对渗漏率、脂质过氧化水平和活性氧积累降低。此外，贮藏期间不饱和/饱和脂肪酸比率和能量电荷的降低也得到了缓解。
这些结果清楚地表明，用CH₄进行采后处理是延长萱草花蕾贮藏寿命的有效手段。©2017化学工业协会。
