UV-C结合1-MCP处理对香梨采后果实品质及生理活性的影响

doi:10.11924/j.issn.1000-6850.2013-1686

摘要/Abstract

摘要： 以库尔勒香梨(Pyresbretschnei deri Rehd)为试材，研究UV-C结合1-MCP处理对香梨采后品质及生理变化的影响，为香梨采后保鲜及病害控制提供理论依据。香梨采后用UV-C结合1-MCP处理，贮藏于低温(-1℃，RH：90%~95%)条件下，研究其对果实品质和生理活性的影响。结果表明：UV-C结合1- MCP处理能够显著抑制果实硬度的下降，保持较高的可溶性固性物含量，抑制VC含量和色度角的降低。经UV-C结合1-MCP处理的香梨呼吸跃变延后，呼吸高峰降低，乙烯释放量下降，乙烯释放高峰推迟。此外，UV-C结合1-MCP处理降低了细胞膜渗透率的上升，抑制了丙二醛(MDA)含量的增加。由此表明：UV-C结合1-MCP处理能够延缓香梨采后果实的生理衰老，保持果实品质。

关键词: 突变体, 突变体

Abstract: Fragrant pear (Pyresbretschnei deri Rehd) fruits were used as test materials to investigate the effect of ultraviolet- C (UV- C) light combined with 1- methylcyclopropene (1- MCP) on postharvest qualities and physiologies of fragrant pear fruit during cold storage. Fragrant pear fruit were treated with UV-C combined with 1-MCP then stored at cold room (-1℃, RH: 90%-5%). The firmness, soluble solid content, vitamin C, hue angle and physiology items of postharvest fragrant pear fruits were determined in this paper. It indicated that UV-C combined with 1-MCP inhibited the decrease of firmness, retained higher soluble solid content (SSC), restrained the decline of vitamin C and hue angle of fruit. Fruits treated with UV- C combined with 1- MCP also significantly delayed respiration climacteric and peak of ethylene production, declined the respiration rate and ethylene production. In addition, UV-C combined with 1-MCP treatment suppressed the increasing of cell membrane integrity and malondiadehyde (MDA) content. The results suggested that UV-C combined with 1- MCP treatment delayed the senescence of physiology and maintained the qualities of postharvest fruits.

李学文. UV-C结合1-MCP处理对香梨采后果实品质及生理活性的影响[J]. 中国农学通报, 2014, 30(22): 191-196.

LI Xue-wen. Effect of UV-C Combined with 1-MCP Treatment on Postharvest Qualities and Physiologies of Fragrant Pear Fruit[J]. Chinese Agricultural Science Bulletin, 2014, 30(22): 191-196.

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