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中国农学通报 ›› 2015, Vol. 31 ›› Issue (14): 119-125.doi: 10.11924/j.issn.1000-6850.casb15010016

• 食品 营养 检测 安全 • 上一篇    下一篇

微真空贮藏延缓西兰花采后衰老与黄化的机制

李文香,樊铭聪,孙亚男,胡欣蕾,王丽娇,张亚璇   

  1. (青岛农业大学食品科学与工程学院/青岛市现代农业质量与安全工程重点实验室,山东青岛 266109)
  • 收稿日期:2015-01-05 修回日期:2015-05-04 接受日期:2015-03-25 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 李文香
  • 基金资助:
    山东省自然科学基金“微真空贮藏条件延缓西兰花采后衰老的机理研究”(ZR2011CL009);青岛农业大学2013年大学生科技创新项目“微真空贮藏条件下西兰花叶绿素降解的机理研究”(QAU2013DC149)。

Mechanism of Micro-vacuum on Delaying Broccoli Fresh Postharvest Aging and Yellowing

Li Wenxiang, Fan Mingcong, Sun Yanan, Hu Xinlei, Wang Lijiao, Zhang Yaxuan   

  1. (Key Laboratory of Modern Agricultural Quality and Safety Engineering of Qingdao, School of Food Science and Engineering, Qingdao Agricultural University, Qingdao Shandong 266109)
  • Received:2015-01-05 Revised:2015-05-04 Accepted:2015-03-25 Online:2015-06-02 Published:2015-06-02

摘要: 为探讨微真空贮藏条件延缓西兰花采后衰老黄化的机制,以新鲜西兰花为试验材料,在(3±0.5)℃,55~65 kPa微真空条件下贮藏,以相同温度下的常压贮藏为对照,探讨采后西兰花的营养与质地指标及色泽指标与叶绿体超微结构的变化。结果表明:与对照相比,微真空贮藏条件能有效抑制采后西兰花Vc、可滴定酸、可溶性固形物含量的下降,延缓脆度的下降及咀嚼性的升高;抑制叶绿素含量的下降及黄化指数的升高,延缓叶绿体超微结构的解体。本研究表明,微真空贮藏条件一方面通过抑制西兰花营养品质的下降及质地品质的变化延缓西兰花的采后衰老;另一方面,通过抑制西兰花色泽品质的变化及叶绿体超微结构的解体延缓西兰花的采后黄化进程。

关键词: POU1F1基因, POU1F1基因, PCR-SSCP, 多态性, 褐色菜鸭

Abstract: In order to explore the effect of micro-vacuum storage pressure on broccoli fresh quality and chloroplast ultra structure, fresh broccoli was stored in micro-vacuum condition, in which the temperature was (3±0.5)℃ and the pressure was 55-65 kPa. Then, taking the storage under normal pressure as the control, the author analyzed nutritional quality of titratable acid and soluble solids content, color quality of chlorophyll content and yellowing index, texture quality of brittleness and chewiness, and changes of chloroplast ultra structure. The results showed that micro-vacuum storage condition could slow down the decline of nutritional quality of titratable acid and soluble solids content, slow down the decline of color quality of chlorophyll content and the rise of yellow color index, effectively restrain the decline of texture quality brittleness and the rise of chewiness, and delay the changes of chloroplast ultra structure. In conclusion, on the one hand, micro-vacuum storage condition could delay broccoli postharvest senescence by inhibiting the decline of broccoli nutritional quality and texture quality change, on the other hand, it could also delay the process of postharvest yellowing of the broccoli by inhibiting the decline of its exterior quality and the disintegration of the chloroplast ultra structure.