采用气相色谱-离子迁移谱（Gas Chromatography-Ion Mobility Spectroscopy，GC-IMS）联用技术，分析CO2积累型气调包装与PET盒透气包装轮南白杏果实在冷藏(1±1) ℃ 36 d内的采后风味物质种类和含量的变化，以鉴定轮南白杏果实特征风味物质和构建指纹图谱，为鲜杏果实采后风味品质损耗与调控的机理研究提供基础。根据指纹图谱显示，从轮南白杏冷藏果实中共检出54种风味物质，包括酮类、醇类、醛类、萜烯类、酯类、酸类、烃类和杂环类，以酮类、醇类和醛类物质为主，2,3-戊二酮、(Z)-3-己烯醇、3-甲基丁醛和丙酸的含量较高。气调包装果实提高了青香、果香、草香、甘草、甜橙5种香型14种物质的含量；增加了甜香和松脂味的乙酸异戊酯和α-蒎烯合成，减少了2-己酮合成。2-己酮可作为普通包装冷藏果实的风味标记物质，丙酮、异丁酸、3-甲基-3-丁烯-1-醇可分别作为高透气、中透气、低透气包装果实的风味标记物质。以中透气材料（16.30%~16.60% O2+2.50%~3.00% CO2）的气调包装调控轮南白杏果实的采后风味品质效果最好。

In order to identify the characteristic flavor substances and construct fingerprints of “Lunnan” apricot, the Gas Chromatography-Ion Mobility Spectroscopy (GC-IMS) was used to analyze the changes of flavor substances in ‘Lunnan’ apricot fruit Packaged by CO2 accumulation modified atmosphere and PET box transmission in cold storage (1±1 ℃) for 36 days., which provides a preliminary basis for the study of the mechanism of postharvest flavor quality loss and regulation. According to the fingerprint, a total of 54 kinds of flavor substances were detected after harvesting, mainly including ketones, alcohols and aldehydes, and other substances like terpenes, esters, acids, hydrocarbons and heterocycles. Among them, 2,3-pentanedione, (Z)-3-hexenol, 3-methylbutanaland propionic acid were relatively high. The modified atmosphere package increased the contents of 14 substances of five flavors: green scent, fruity aroma, grass scent, licorice scent and sweet orange flavor; and the synthesis of amyl acetate and α-pinene with sweet fragrance and rosin flavor. However, the 2-hexanone that can be used as a flavor marker for ordinary packaged fruits was reduced. Acetone, butanoic acid and 3-methyl-3-buten-1-ol can be used as characteristic marker substances for different modified atmosphere Packaged apricots. The flavor quality of medium gas transmission packaging (16.30%~16.60% O2+2.50%~ 3.00% CO2) was relatively good during storage.

国家公益性行业（农业）科研专项经费（201303075）