Mild concentration of ethanol in combination with ascorbic acid inhibits browning and maintains quality of fresh-cut lotus root

文献类型： 外文期刊

第一作者： Zhu, Yongqing

作者： Zhu, Yongqing;Luo, Yaguang;Turner, Ellen;Luo, Yaguang;Turner, Ellen

作者机构：

关键词： Fresh-cut lotus root;Ethanol;Ascorbic acid;Anti-browning;Antimicrobial;Quality

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

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年卷期：

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收录情况： SCI

摘要： Aqueous solutions of ethanol and ascorbic acid alone and in combination were compared to a commonly used sanitizer, sodium hypochlorite, and a leading commercial antibrowning agent containing calcium ascorbate (CA) for their efficacy to inhibit microbial growth and browning on fresh-cut lotus root. Fresh cut lotus root slices were immersed in one of 7 treatment solutions including water (control), 30% ethanol (v/v), 30% ethanol (v/v) plus 30 g L (1) ascorbic acid (AA), 30% ethanol (v/v) plus 30 g L (1) CA, 30 g L 1 AA, 30 g L (1) CA and 100 mg L (1) sodium hypochlorite for 2 min, and then packaged in polyethylene bags and stored for 28 d at 4 degrees C. Packages were monitored for headspace gas composition, color, texture, aerobic mesophilic bacteria, and yeast and mold populations, electrolyte leakage and sensory attributes. The results indicate that all ethanol treatments, with and without added AA or CA, not only inhibited microbial growth, but also delayed browning more effectively than either AA or CA alone. The combined treatments of Ethanol 30% (v/v) along with 30 g L (1) AA or 30 g L (1) CA were even more effective than ethanol alone in maintaining quality of fresh-cut lotus slices during cold storage. Increasing ethanol concentration within the range of 5-30% (v/v) when accompanied by 30 g L (1) AA, decreased microbial populations and had little effect on quality maintenance of fresh-cut lotus root during cold storage. Ethanol concentrations of 20-30% (v/v) in conjunction with 30 g L (1) AA have the potential to inhibit browning and maintain quality of fresh-cut lotus root slices for more than 14 d when stored at 4 degrees C. This is the first use of ethanol as a dual control for both browning and microbial growth in fresh-cut lotus root. Published by Elsevier B.V.

分类号： S3

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