贮藏温度对菇娘品质和采后生理的影响

Effects of Storage Temperature on Quality and Postharvest Physiologies of Physalis pubescens L.

以菇娘为试验材料,采用4、8、12℃及室温(均温28℃)贮藏的方法,研究了不同温度对菇娘贮藏品质(维生素C、可滴定酸、可溶性固形物含量)及采后生理(相对电导率、丙二醛含量、超氧化物歧化酶(SOD)活性)的影响。结果表明:不同贮藏温度对菇娘果实品质和采后生理影响不同,在室温下品质和生理变化最快,其次是12℃,变化最小的是4℃。贮藏温度对菇娘维生素C和可滴定酸含量有显著影响,低温有利于减缓菇娘品质的下降速率;随着贮藏时间的延长,菇娘的相对电导率和丙二醛含量不断增加,SOD活性不断降低,低温贮藏有利于抑制电导率和丙二醛含量的增加,同时保持较高的SOD活性。4℃和8℃贮藏均能提高菇娘的贮藏品质和生理活性,以4℃表现最佳。

By storaging the Physalis pubescens L.at 4,8,12℃and indoor temperature（mean temperature was 28℃）,the effects of storage temperature on quality（vitamin C content,titratable acidity content and the soluble solids content）and postharvest physiologies（relative conductivity,MDA content and SOD activity）of P.pubescens L.were studied.The results showed that,different storage temperatures had different effects on quality,the changes in quality and postharvest physiology were the fastest for fruits stored at indoor temperature,it was followed by 12 ℃,quality and postharvest physiology changed slowly at 4℃.The storage temperature had significant effect on the vitamin C content and titratable acid content,low temperature was beneficial to slow the decline rate of fruit quality.Relative conductivity and malondialdehyde content increased with the process of storage time,while the SOD activity decreased.Low storage temperature was beneficial to inhibit the increase of the relative conductivity and malondialdehyde content,and maintain high SOD activity.4℃and 8 ℃storage temperatures could improve the storage quality and postharvest physiology of P.pubescens L.,and the ideal storage temperature was 4℃.