外源抗坏血酸处理对胡萝卜贮藏期间品质的影响

研究外源抗坏血酸(AsA)处理对胡萝卜贮藏过程中品质的影响，采用100 mg/L AsA处理‘京红五寸’与‘鞭杆红’品种的胡萝卜，于0℃条件下贮藏，测定贮藏期间胡萝卜的品质指标。通过测定100 mg/L AsA处理后的2种胡萝卜指标发现，外源AsA处理能够保持胡萝卜蛋白质含量及抗坏血酸含量，延缓胡萝卜糠心现象的发生、并能延缓胡萝卜游离氨基酸含量的升高，外源AsA处理提高了胡萝卜过氧化氢酶(CAT)和过氧化物酶(POD)的活性，抑制了胡萝卜贮藏过程中H2O2含量的增加，有效保持了胡萝卜的食用品质。外源抗坏血酸处理能有效延缓胡萝卜在贮藏过程中的衰老进程，保持了胡萝卜的品质，有利于延长胡萝卜的贮藏时间。

Effects of Exogenous Ascorbic Acid on Quality of Carrot during Storage

The aim was to study the effects of exogenous ascorbic acid(AsA) treatment on the quality of carrot during.Using 100 mg/L AsA to deal with‘Beijing five inch’and‘whip red’varieties of carrot with 0℃ storage,the quality indexes of carrot were determined.The results showed that: using 100 mg/L AsA deal with carrot could maintain the carrot protein content and ascorbic acid content,delayed the hollowing index and the increase of free amino acid content.ExAsA improved the activity of CAT and POD,inhibited the increase of H2O2 content,and effectively kept the edible quality of carrot.ExAsA treatment could effectively delay the aging process of carrot during storage,and extend the storage time of carrot.