食品科学 ›› 2011, Vol. 32 ›› Issue (18): 343-347.doi: 10.7506/spkx1002-6630-201118077

• 包装贮运 • 上一篇    下一篇

天然保鲜剂对马陆葡萄贮藏保鲜效果

胡晓亮,周国燕   

  1. 上海理工大学食品与低温生物技术研究所
  • 出版日期:2011-09-25 发布日期:2011-09-24
  • 基金资助:
    国家自然科学基金青年基金项目(50206013);上海市教委科研创新项目(09YZ230)

Fresh-keeping Effect of Natural Preservative on Malu Grapes during Storage

HU Xiao-liang,ZHOU Guo-yan   

  1. (Institute of Cryomedicine and Food Refrigeration, Shanghai University of Science and Technology, Shanghai 200093, China)
  • Online:2011-09-25 Published:2011-09-24

摘要: 研究壳聚糖、海藻酸钠、乳酸链球菌素和溶菌酶4种天然保鲜剂对马陆葡萄贮藏保鲜效果的影响,分析比较各种天然保鲜剂处理对马陆葡萄的感官品质、质量损失率、硬度、呼吸强度、VC含量、可溶性固形物含量以及SOD酶活性等生理生化指标的变化。结果表明:壳聚糖涂膜处理的葡萄,感官效果最好,在4℃±1℃条件下贮藏25d后,果实的质量损失率仅为9.34%,VC含量为2.3mg/100g,可溶性固形物含量为12.1%,硬度为#br# 1027.59kg/cm2,SOD酶比活力为87.3U/g,呼吸强度显著低于其他处理组,保鲜效果最佳。

关键词: 葡萄, 保鲜, 涂膜, 壳聚糖

Abstract: The fresh-keeping effects of chitosan, alginate, nisin and lysozyme on Malu grapes during 4 ℃ storage were compared by determining their sensory quality, weight loss, hardness, respiration rate, vitamin C content, soluble solid content and SOD activity. The results indicated that chitosan-coating treatment had the best preserving effect on the sensory quality of Malu grapes. The weight loss, vitamin C content, soluble solid content, hardness and SOD activity of chitosan-treated grapes after 25 days of storage were 9.34%, 2.3 mg/100 g, 12.1%, 1027.59 kg/cm2 and 87.3 U/g, respectively. Meanwhile, the respiration intensity exhibited a significant decrease when compared with other treatment groups.

Key words: grape, preservation, coating, chitosan

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