食品科学 ›› 2020, Vol. 41 ›› Issue (17): 238-245.doi: 10.7506/spkx1002-6630-20190805-052

• 包装贮运 • 上一篇    下一篇

UV-C和LED红光复合处理对西兰花贮藏品质的影响

刘泽松,史君彦,左进华,高丽朴,王清,孟德梅   

  1. (1.北京市农林科学院蔬菜研究中心,北京 100097;2.天津科技大学食品科学与工程学院,天津 300457)
  • 出版日期:2020-09-15 发布日期:2020-09-16
  • 基金资助:
    国家大宗蔬菜产业体系建设项目(CARS-23-E02);北京市农林科学院创新能力建设专项(20180705)

Effect of Combined UV-C and Red Light Emitting Diode Irradiation on Storage Quality of Broccoli

LIU Zesong, SHI Junyan, ZUO Jinhua, GAO Lipu, WANG Qing, MENG Demei   

  1. (1. Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;2. College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China)
  • Online:2020-09-15 Published:2020-09-16

摘要: 为探究短波紫外线(ultraviolet-C,UV-C)和发光二极管(light emitting diode,LED)红光复合处理对西兰花贮藏品质的影响,本研究采用3 kJ/m2的UV-C辐照和50 μmol/(m2·s)的LED红光辐照单独和复合处理采后西兰花,并将处理后的西兰花贮藏于(20±1)℃条件下,观察其外观品质及生理特性的变化。结果表明:与UV-C、日光(LIGHT)和LED红光分别单独处理西兰花相比,UV-C和LED红光复合处理可有效保持西兰花感官品质,抑制质量损失率和丙二醛含量的增加,延缓叶绿素和VC含量下降,提高过氧化物酶、过氧化氢酶、抗坏血酸过氧化物酶活力。综上,UV-C和LED红光复合处理可以有效保持西兰花品质,延长货架期。

关键词: 短波紫外线;发光二极管;复合处理;西兰花;品质

Abstract: In this study, 3 kJ/m2 ultraviolet-C (UV-C) and 50 μmol/(m2·s) red light emitting diode (LED) irradiation were used separately or in combination to treat postharvest broccoli, which was subsequently stored at (20 ± 1) ℃. Changes in its appearance and physiological characteristics were observed to evaluate the effect of this combined treatment on the storage quality of broccoli. The experimental results showed that combined UV-C and red LED irradiation could effectively maintain the sensory quality, inhibit mass loss and the increase in malondialdehyde (MDA) content, delay the decrease in chlorophyll and vitamin C content, and enhance the activities of peroxidase (POD), catalase (CAT) and aseorbate peroxidase (APX) compared with UV-C, daylight and red LED irradiation. Thus, combined UV-C and red LED irradiation can effectively maintain the quality and prolong the shelf life of broccoli.

Key words: ultraviolet-C; light emitting diode; combined treatment; broccoli; quality

中图分类号: