微真空贮藏条件对莱阳茌梨保鲜效果的影响

Effect of Microvacuum Storage on the Fresh-keeping of Laiyang Pear

为探讨微真空贮藏条件对果蔬的保鲜效果,以莱阳茌梨为实验材料,通过常压贮藏作对照,研究微真空贮藏条件对莱阳茌梨果实生理生化变化的影响。结果表明:微真空贮藏可以显著降低莱阳茌梨果实的呼吸强度,抑制呼吸高峰的出现;减少梨的水分损失,控制质量损失率在3%以下,减缓可滴定酸及可溶性固形物含量的下降(P<0.05);而在抑制VC含量下降方面效果不显著(P>0.05)。因此,微真空贮藏能明显降低梨果实的代谢强度,提高果实的保鲜效果。

In order to evaluate the fresh-keeping effect of microvacuum storage on Laiyang pear,atmospheric storage was used as control to investigate physiological and biochemical changes of Laiyang Chili pear during microvacuum storage.The results showed that microvacuum storage significantly lowered the respiration intensity of Laiyang Chili pear and inhibited the occurrence of the respiration peak,reduced the loss of water,resulted in a weight loss rate of smaller than 3%,and alleviated the decrease of soluble solid and titratable acid（TA） contents（P 〈0.05） but did not significantly inhibit the decrease of vitamin C content（P 〉0.05）.It could therefore be concluded that microvacuum storage notably attenuates the metabolic intensity of Laiyang pear,thus erecting satisfactory fresh-keeping effect.