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林产化学与工业 ›› 2019, Vol. 39 ›› Issue (4): 77-82.doi: 10.3969/j.issn.0253-2417.2019.04.011

• 研究报告 • 上一篇    下一篇

干燥方法对互叶白千层理化特性及精油品质的影响

刘义军1,2,袁源1,2,刘洋洋1,2,张帆1,2,李积华1,2,*()   

  1. 1. 中国热带农业科学院 农产品加工研究所, 农业农村部热带作物产品加工重点实验室, 广东 湛江 524001
    2. 海南省果蔬贮藏与加工重点实验室, 广东 湛江 524001
  • 收稿日期:2019-02-13 出版日期:2019-08-25 发布日期:2019-08-23
  • 通讯作者: 李积华 E-mail:foodpaper@126.com
  • 作者简介:刘义军(1987-),男,湖南益阳人,助理研究员,硕士,主要从事热带农产品加工工艺与装备研制工作
  • 基金资助:
    中国热带农业科学院基本科研业务费专项(1630122017017);中国热带农业科学院基本科研业务费专项(1630122017014);广东特色农产品深加工关键技术产业化研究与推广

Effects of Different Drying Methods on Physicochemical Properties and Essential Oil Quality of Melaleuca alternifolia Cheel

Yijun LIU1,2,Yuan YUAN1,2,Yangyang LIU1,2,Fan ZHANG1,2,Jihua LI1,2,*()   

  1. 1. Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China
    2. Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Zhanjiang 524001, China
  • Received:2019-02-13 Online:2019-08-25 Published:2019-08-23
  • Contact: Jihua LI E-mail:foodpaper@126.com
  • Supported by:
    中国热带农业科学院基本科研业务费专项(1630122017017);中国热带农业科学院基本科研业务费专项(1630122017014);广东特色农产品深加工关键技术产业化研究与推广

摘要:

研究了4种不同干燥方法(太阳晒干、热风干燥、真空干燥和冷冻干燥)对互叶白千层理化特性及精油品质的影响,结果表明:经热风干燥互叶白千层中总黄酮含量最高,为(2.68±0.27)%;经冷冻干燥互叶白千层DPPH·清除率、·ABTS+清除率最低,分别为(53.74±4.58)%、(71.63±2.95)%;经4种方法干燥后,精油提取得率下降,冷冻干燥所得互叶白千层精油提取得率最高(5.99±0.60)%,精油中松油烯-4-醇大于30%,1,8-桉叶素小于5%,符合ISO4790-2004及GB/T 26514-2011中的规定标准;且经太阳晒干与热风干燥后所得精油中松油烯-4-醇含量的差异显著,太阳晒干所得精油中松油烯-4-醇最高为(50.14±1.48)%,冷冻干燥所得精油中1,8-桉叶素最低,为(1.19±0.09)%。

关键词: 互叶白千层, 精油, 热风干燥, 冷冻干燥, 理化性质

Abstract:

The effects of four drying methods, sun drying, hot air drying, vacuum drying and vacuum freeze drying on physicochemical properties and essential oil quality of Melaleuca alternifolia Cheel were studied. The results showed that the contents of flavonoids was the highest in M. alternifolia after hot air drying and the contents were(2.68±0.27)%; the DPPH·and ABTS+ scavenging activities of the M. alternifolia after freeze-drying were the lowest and the scavenging rates were (53.74±4.58)% and (71.63±2.95)%, respectively. After drying by four methods, the extraction rates of essential oil decreased. The oil extraction rate was the highest after the freeze drying. The contents of terpinen-4-ol and 1, 8-cineole in the essential oil obtained were higher than 30% and less than 5%, respectively after drying process. The difference of the contents of terpineol-4-ol in the essential oil obtained after sun drying and hot air drying was significant, and the content obtained after the sun drying was the highest. The content of 1, 8-cineole in the essential oil obtained after vacuum freeze drying was the lowest.

Key words: Melaleuca alternifolia, essential oil, hot air drying, vacuum freeze drying, physicochemical properties

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