LIU Qiqi,XU Juan,WANG Liming,et al.Effect of Exogenous Hydrogen Sulfide on Storage Quality and Antioxidant Capacity of Postharvest ‘Jiancui’ Jujube Fruits[J].Northern Horticulture,2018,42(22):135-142.[doi:10.11937/bfyy.20180139]
外源H.2S对“尖脆”枣果实贮藏品质及抗氧化能力的影响
- Title:
- Effect of Exogenous Hydrogen Sulfide on Storage Quality and Antioxidant Capacity of Postharvest ‘Jiancui’ Jujube Fruits
- 文献标志码:
- A
- 摘要:
- 以“尖脆”枣为试材，利用不同浓度NaHS（H.2S供体）处理枣果实，以清水处理为对照，研究在货架（20 ℃）和冷藏（4 ℃）过程中枣果实贮藏品质和抗氧化能力的变化。结果表明：在货架期虽然0.8 mmol·L-1 NaHS处理可减少果实可溶性固形物损失，抑制体内丙二醛（MDA）积累，保持了较高的还原型谷胱甘肽（GSH）和总酚（TP）含量，但其作用效果低于1.6 mmol·L-1 NaHS处理。在冷藏过程中，所有NaHS处理均能延缓果实硬度下降，抑制MDA积累，提高过氧化氢酶（CAT）和抗坏血酸过氧化物酶（APX）活性，延缓TP、总黄酮（TF）、GSH和抗坏血酸（ASA）含量下降，同时保持较高的DPPH·清除能力和铁离子还原能力（FRAP）。可见H.2S保鲜效果受贮藏温度和处理浓度的影响，而1.6 mmol·L-1 NaHS处理后在货架及冷藏过程中均可增加枣果实抗氧化酶活性，延缓非酶抗氧化物质损失，降低膜系统伤害，对保持较高的贮藏期果实品质具有重要效果。
- Abstract:
- ‘Jiancui’jujube fruits were used to investigate the effects of different concentrations of exogenous H.2S fumigation on fruit storage quality and antioxidant capacity during shelf (20 ℃) and cold (4 ℃) storage,while control fruits were immersed in water.The results showed that although 0.8 mmol·L-1 NaHS could reduce the loss of soluble solids content (SSC),inhibit the accumulation of malondialdehyde (MDA),and maintain higher levels of reduced glutathione (GSH) and total phenols (TP) during shelf storage,its efficacy was lower than that in 1.6 mmol·L-1 NaHS treatment.During cold storage,both NaHS treatments could delay the decrease of fruit firmness,reduce the amount of MDA,enhance the activities of catalase (CAT) and ascorbate peroxidase (APX),retard the decrease of TP,total flavonoid (TF),GSH and ascorbic acid (AsA),and maintain the higher DPPH· scavenging capacity and ferric reducing antioxidant power (FRAP).This indicated that the storage temperature and treatment concentration affected the efficacy of H.2S.The 1.6 mmol·L-1 NaHS could enhance the activities of antioxidant enzymes,reduce the losses of nonenzymatic antioxidants,alleviate the membrane damage,and prolong the fruit storage quality.
相似文献/References:
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备注/Memo
第一作者简介：刘琦琦（1993），女，硕士研究生，研究方向为果蔬贮藏与加工。Email:liuqiqi9306@126.com.责任作者：支欢欢（1982），女，博士，讲师，研究方向为果蔬贮藏与加工。Email:zhihuanhuan163@163.com.基金项目：国家自然科学基金资助项目(31501539)；郑州轻工业学院博士科研启动基金资助项目(2014BSJJ028，2014BSJJ027)。收稿日期：2018-04-07