Involvement of energy metabolism to chilling tolerance induced by hydrogen sulfide in cold-stored banana fruit
Involvement of energy metabolism to chilling tolerance induced by hydrogen sulfide in cold-stored banana fruit
复制标题
能量代谢与硫化氢诱导的冷藏香蕉果实耐冷性的关系
DOI：
10.1016/j.foodchem.2016.03.113
复制
发表时间：
2016-10-01
期刊：
影响因子：
8.8
通讯作者：
Luo, Zisheng
中科院分区：
文献类型：
--
作者：
Li, Dong;Limwachiranon, Jarukitt;Luo, Zisheng
研究了低温胁迫下硫化氢（H2S）对采后香蕉果实能量代谢的影响。香蕉果实用最佳浓度（0.5mM）的硫氢化钠（NaHS）水溶液熏蒸24 h后，先在7 ℃下贮藏14 d，再在20 ℃下贮藏6d。H_2S处理的香蕉果实硬度和色调角较高，电解质渗漏率、丙二醛（MDA）含量和乙烯释放量较低。这表明与对照相比，冷害的发展较慢。三磷酸腺苷（ATP）和能量电荷的减少在H2S处理香蕉果实中不明显。H2S处理显著提高了与能量代谢相关的H+-ATP酶、Ca ~（2+）-ATP酶、细胞色素C氧化酶（CCO）和琥珀酸脱氢酶（SDH）的活性。因此，H2S可能通过提高香蕉果实能量代谢相关酶的活性，维持果实的能量平衡，从而缓解香蕉果实的低温冷害。(C)2016爱思唯尔有限公司版权所有
In this study, the effect of hydrogen sulfide (H2S) on energy metabolism in postharvest banana fruit under chilling stress was investigated. Banana fruit, fumigated with optimal concentration (0.5 mM) of aqueous sodium hydrosulfide (NaHS) solution for 24 h, were initially stored at 7 degrees C for 14 d and 20 degrees C for another 6 d. H2S treated banana fruit showed both higher value of firmness and Hue angle, as well as lower value of electrolyte leakage, malondialdehyde (MDA) content and ethylene production. These indicated slower development of chilling injury compared with the control. Decrease in adenosine triphosphate (ATP) and energy charge was not noticeable in H2S treated banana fruit. Moreover, the activity of H+-ATPase, Ca2+-ATPase, cytochrome C oxidase (CCO) and succinate dehydrogenase (SDH), associated with energy metabolism, were significantly enhanced by H2S treatment. Therefore, it can be deduced that H2S can potentially alleviate chilling development in banana fruit by increasing enzymes activities, involved in energy metabolism, to maintain energy charge. (C) 2016 Elsevier Ltd. All rights reserved.