食品科学 ›› 2012, Vol. 33 ›› Issue (12): 313-317.doi: 10.7506/spkx1002-6630-201212065

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正交试验优化魔芋葡甘聚糖复合膜配方及其对青椒的保鲜作用

张艳梅,王 慧,秦 文*   

  1. 四川农业大学食品学院
  • 出版日期:2012-06-25 发布日期:2012-07-27

Orthogonal Array Design for Optimization of Konjac-Glucomannan Blend Film Formulation and Its Preservative Effect on Bell Pepper (Capsicum annum L.) Fruits

ZHANG Yan-mei,WANG Hui,QIN Wen*   

  1. (College of Food Science, Sichuan Agricultural University, Ya’an 625014, China)
  • Online:2012-06-25 Published:2012-07-27

摘要: 以魔芋葡甘聚糖为膜基质,利用5因素2水平正交试验筛选对青椒具有良好保鲜作用的涂膜保鲜剂组合,分析其对青椒的衰老指数、丙二醛(MDA)含量、VC含量和叶绿素含量的影响。结果表明:青椒的最佳复合涂膜剂组合为8.0g/L魔芋精粉+1.0g/L曲酸+0.4g/L EDTA+0.1g/L抗坏血酸+0.35%甘油。该涂膜组合处理青椒,贮藏30d后,衰老指数为0.32,MDA、VC含量和叶绿素含量分别为0.87nmol/g、25.0mg/100g和0.08mg/g,保鲜效果明显优于对照。

关键词: 魔芋葡甘聚糖, 复合膜, 青椒, 保鲜

Abstract: A five-variable, two-level orthogonal array design was employed to optimize the formulation of edible blend films based on konjac glucomannan (KGM) for bell pepper fruits. Besides, the effect of KGM-based edible blend films on aging index, malondialdehyde (MDA) content, vitamin C content and chlorophyll content was investigated during storage of bell pepper fruits at (9 ± 1 )℃. The results showed that the formula for KGM-based edible blend films was 8 g/L KGM, 0.35% glycerol, 1.0 g/L kojic acid, 0.4 g/L EDTA and 0.1 g/L vitamin C. After 30 d storage, the aging index, MDA content, vitamin C content and chlorophyll content of bell pepper fruits treated with KGM-based edible blend films were 0.32, 0.87 nmol/g, 25.0 mg/100 g and 0.08 mg/g, respectively, indicating that KGM-based edible blend films are better for preserving bell pepper fruits compared to control samples.

Key words: konjac glucomannan, blend films, pepper fruit, preservation

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