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中国精品科技期刊2020
化学物质对鲜切茭白品质及生理的影响[J]. 食品工业科技, 2012, (19): 317-321. DOI: 10.13386/j.issn1002-0306.2012.19.064
引用本文: 化学物质对鲜切茭白品质及生理的影响[J]. 食品工业科技, 2012, (19): 317-321. DOI: 10.13386/j.issn1002-0306.2012.19.064
Effect of chemicals on the quality and physiology of fresh-cut Zizania latifolia[J]. Science and Technology of Food Industry, 2012, (19): 317-321. DOI: 10.13386/j.issn1002-0306.2012.19.064
Citation: Effect of chemicals on the quality and physiology of fresh-cut Zizania latifolia[J]. Science and Technology of Food Industry, 2012, (19): 317-321. DOI: 10.13386/j.issn1002-0306.2012.19.064

化学物质对鲜切茭白品质及生理的影响

Effect of chemicals on the quality and physiology of fresh-cut Zizania latifolia

  • 摘要: 研究了化学物质单独或复合处理对鲜切茭白品质及生理的影响。结果显示,4-己基间苯二酚(4-HR)、氯化钙(CC)、抗坏血酸(AA)、N-乙酰-L-半胱氨酸(N-AC)和复合处理均显著抑制了鲜切茭白的褐变;贮藏15d后失重率分别为对照的95.6%、75.3%、74.5%、76.5%和57.9%;硬度分别为入贮时的66.1%、91.0%、80.4%、74.6%和86.7%,对照仅为63.6%;抗坏血酸保留率分别为70.5%、75.1%、89.2%、83.3%和82.6%,对照仅保留57.5%;还原糖含量维持在相对高的水平,呼吸速率、及O-2·产生速率和MDA含量维持在相对低的水平;PPO活力显著低于对照;POD活力分别为入贮时的3.07、1.95、1.73、2.01、1.35倍。以上结果表明,实验所选化学物质均能有效延缓鲜切茭白褐变和生理代谢,提高活性氧自由基清除能力,最终维持鲜切茭白较好的品质。由于复合处理表现出最好的效果,提示复合处理可用于商业上控制鲜切茭白褐变和维持其品质。 

     

    Abstract: The effect of various chemicals alone or in combination treatments on the quality and physiology of fresh-cut Z.latifolia were investigated.The results showed that the 4-HR, CC, AA, N-AC and combination treatments retarded browning of fresh-cut Z.latifolia significantly.After 15 days storage at (1±0.5) ℃, the weight loss were 95.6%, 75.3%, 74.5%, 76.5% and 57.9%, respectively, of the control.Firmness were 66.1%, 91.0%, 80.4%, 74.6% and 86.7%, respectively, compared to that at the beginning, while it was only 63.6% in the control.Ascorbic acid retention rate were 70.5%, 75.1%, 89.2%, 83.3% and 82.6%, respectively, and it was 57.5% in the control.All treatments maintained relatively high reducing sugar contents and relatively low respiratory rate, superoxide anion radical (O-2·) production rate and malondialdehyde (MDA) contents.These treatments also inhibited polyphenol oxidase (PPO) activities compared with the control.Peroxidase (POD) activities were 3.07, 1.95, 1.73, 2.01 and 1.35 folds, respectively, compared to that at the beginning.The present findings indicated that the tested chemicals could retard physiological metabolism and browning on cut surface, improve free radicals scavenging activities, and therefore maintained a better quality of fresh-cut Z.latifolia during storage at 1℃.Since the combination of antibrowning agents gave even better effect, it was suggested that the combination treatment could be commercially used to control browning and to maintain quality in fresh-cut Z.latifolia.

     

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