作者：刘维, 周智威, 白婷, 刘保, 张国建, 李洋, 孙群

作者单位：四川大学生命科学学院 生物资源与生态环境教育部重点实验室, 四川 成都 610064

关键词：羊肚菌;保鲜;三磷酸腺苷;脂质氧化;挥发性呈香物质

摘要：

探究外源ATP处理对羊肚菌采后理化性质和挥发性呈香物质的影响，为羊肚菌保鲜方法的探索提供理论基础。新鲜羊肚菌用0.5 mmol/L和0.7 mmol/L ATP溶液浸泡处理后4℃贮藏，测定储藏期间水分活度、细菌总数、PPO酶活、还原性糖含量、脂质氧化水平、挥发性呈香物质。与对照相比，0.5 mmol/L ATP处理组在储藏期间的水分活度和菌落总数降低，还原糖含量减少，脂质氧化程度降低。ATP处理可以提高羊肚菌关键挥发性呈香物质的含量，如2-甲基丁醛、苯乙醛、反-2-辛烯醛、1-辛烯-3-醇、1，2-二甲基-3-辛酮。0.5 mmol/L ATP处理可以较好地保持羊肚菌采后储藏期间的生理特性和香味特征。

Effects of exogenous ATP on postharvest physicochemical properties and volatile aroma compounds in Morchella
LIU Wei, ZHOU Zhiwei, BAI Ting, LIU Bao, ZHANG Goujian, LI Yang, SUN Qun
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
Abstract: To explore the effects of ATP treatment on the physicochemical properties and volatile constituents of Morchella after harvest, and to explore Morchella preservation methods. Morchella was immersed in 0.5 mmol/L and 0.7 mmol/L ATP solution, before stored at 4 ℃. The water activity, colony count, PPO activity, reducing sugar content, lipid oxidation level and volatile compounds were detected during storage. Compared with the control, the water activity, colony count, the reducing sugar content and the degree of lipid oxidation decreased in the 0.5-mmol/L-ATP-treated group, in which the content of volatile compounds, including 2-methylbutanal, phenylacetaldehyde, trans-2-octenal, 1-octene-3-ol, 1,2-dimethyl-3-octanone, were significantly increased. 0.5 mmol/L ATP treatment can maintain the physiological characteristics and flavor characteristics of Morchella during storage.
Keywords: Morchella;preservation;adenosine triphosphate;lipid peroxide;volatile aroma
2019, 45(8):85-92  收稿日期: 2019-02-18;收到修改稿日期: 2019-04-05
基金项目: 四川省科技计划重点项目（2018GZ0003）；中央高校基本科研业务费专项资金资助（2018CDPZH-9）
作者简介: 刘维(1993-),女,四川广安市人,硕士研究生,专业方向为微生物学
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