壳聚糖涂膜对鲜切马铃薯保鲜效果的影响

【摘要】 探讨了马铃薯品种、温度、壳聚糖浓度对鲜切马铃薯的色差(ΔE)、多酚氧化酶(PPO)活性、总糖含量的影响。实验采用L9(34)正交设计方案,进行极差分析。分析结果表明:马铃薯的三个品种以大西洋最适合鲜切,其次是费乌瑞它,再次是中薯三号;0、4、8℃三个冷藏温度中,温度越低保鲜效果越好;0.5%、1.0%、1.25%三个壳聚糖涂膜浓度中,以1.0%的涂膜效果最好;用1.0%的壳聚糖对大西洋进行涂膜,并置于0℃下冷藏,保鲜效果最好,货架期可以达到6d。更多还原

【Abstract】 This paper studied the effects of variety,temperature,and the thickness of chitosan on fresh-cut potato about chromatism(E),polyphenoloxidase(PPO)and content of total sugar.The L9(34)orthogonal design was used in this experiment.Range analysis was then employed to optimize the process conditions from the test result.The results of analysis showed that the best variety was Atlantic,the second was Favorita,the third was Zhongshu No.3 and the temperature lower the preservation effect was better in the three temperatures of cold storage(0℃,4℃,8℃)and the best thickness was 1.0% in the three of chitosan.As a conclusion,the best treatment was the fresh-cut potato of Atlantic treated with 1.0%chitosan film in 0℃ refrigerate.The shelf life could reach to six days.更多还原