食品科学

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冰温结合纳他霉素贮藏对西兰花品质及生理的影响

林本芳,鲁晓翔,李江阔,陈绍慧   

  1. 1.天津商业大学生物技术与食品科学学院,天津市食品生物技术重点实验室,天津 300134;
    2.国家农产品保鲜工程技术研究中心,天津市农产品采后生理与贮藏保鲜重点实验室,天津 300384
  • 出版日期:2013-08-25 发布日期:2013-09-03

Effect of Controlled Freezing Point Storage Combined with Natamycin on the Quality and Physiology of Broccolis

LIN Ben-fang,LU Xiao-xiang,LI Jiang-kuo,CHEN Shao-hui   

  1. 1. Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce,Tianjin 300134, China;2. Tianjin Key Laboratory of Postharvest Physiology and Storage of Agricultural Products,National Engineering and Technology Research Center for Preservation of Agricultural Products, Tianjin 300384, China
  • Online:2013-08-25 Published:2013-09-03

摘要:

通过对不同处理方式的西兰花在贮藏期间理化指标及营养成分变化规律的分析,探讨冰温结合纳他霉素处理对西兰花的保鲜效果。结果表明:与直接冰温贮藏或冷藏结合纳他霉素的处理相比,冰温结合纳他霉素处理对延缓西兰花可溶性固形物(TSS)含量和叶绿素含量的下降均有明显效果,可抑制西兰花的呼吸强度和乙烯生成速率;且冰温结合纳他霉素处理提高了西兰花超氧化物歧化酶(SOD)的活性,降低了多酚氧化酶(PPO)活性,延缓了细胞膜相对透性的升高。这说明西兰花经冰温结合纳他霉素处理贮藏的效果优于直接冰温贮藏与冷藏结合纳他霉素贮藏的效果。

关键词: 西兰花, 纳他霉素, 冰温贮藏, 冷藏, 品质

Abstract:

The effect of controlled freezing point storage combined with natamycin on preserving broccolis was explored.
Analytical determinations of physiochemical parameters and nutritional composition were made every 14 days during the
storage period of 70 days. Results showed that compared with single controlled freezing point storage, and cold storage
combined with natamycin, controlled freezing point storage combined with natamycin was more effective in inhibiting
the reduction of TSS and chlorophyll in broccolis. Moreover, controlled freezing point storage combined with natamycin
suppressed respiratory intensity and ethylene generation rate, increased SOD activity, lowered PPO activity and resulted in
a delayed increase in cell membrane permeability. These findings demonstrate the superiority of controlled freezing point
storage combined with natamycin over the two other treatments in preserving the quality of broccolis.

Key words: broccoli, natamycin, ice-temperature storage, cold storage, quality