采后涂膜处理对山竹果壳细胞代谢物和果肉品质的影响

以山竹果为材料,研究了采后涂膜处理常温贮藏(1%壳聚糖和1%海藻酸钠)对山竹果壳细胞代谢物及果肉品质的影响。结果表明:采后涂膜处理常温贮藏中山竹果壳中超氧阴离子、膜脂过氧化产物丙二醛(MDA)、过氧化氢的含量随着贮藏时间呈上升趋势,贮藏15d时,常温、1%壳聚糖、1%海藻酸钠涂膜处理的丙二醛含量比初期分别增加了94.4%、67.0%和38.9%。果壳代谢物可溶性糖和总酚含量均先上升后下降,2种涂膜处理均能有效延缓果壳细胞代谢物的增加。其中1%壳聚糖涂膜处理能够显著延缓果肉VC和总糖含量的下降,减慢营养物质的消耗,抑制果实的腐烂。

The effect of different treatment on cell metabolites of mangosteen shell and pulp quality of postharvese mangosteen fruit

The effect of different postharvest treatments on mangosteen fruit at room temperature(1%sodium alginate and 1%chitosan coating) on cell metabolites and lignification substrate of mangosteen shell was studied.The results show that superoxide anion,malondialdehyde(MDA) and hydrogen peroxide content of mangosteen shell increased during storage.At the 15 days of storage,malondialdehyde content increased by 94.4%,67.0%and38.9% after the treatment of 1%sodium alginate and 1%chitosan coating treatment.Soluble sugar and total phenolic content were first increased and then dropped.The coating treatment can significantly reduce the cell metabolites of mangosteen shell.It also reduced VC and total sugar content,slow down nutrient consumption and inhibit the decay of fruit.