食品科学

• 基础研究 • 上一篇    下一篇

干燥方式对高良姜片理化特性的影响

彭芍丹,黄晓兵,静 玮,周 伟,李积华,林丽静*   

  1. 中国热带农业科学院农产品加工研究所,广东 湛江 524001
  • 出版日期:2017-01-15 发布日期:2017-01-16

Effect of Drying Methods on Physicochemical Properties of Alpinia officinarum Hance Slices

PENG Shaodan, HUANG Xiaobing, JING Wei, ZHOU Wei, LI Jihua, LIN Lijing*   

  1. Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China
  • Online:2017-01-15 Published:2017-01-16

摘要: 目的:探究高良姜片干燥前后理化特性的变化情况,确定最佳保质干燥方式。方法:采用色差仪、紫外分光光度仪、高效液相色谱仪、固相微萃取-气相色谱-质谱联用仪考察6 种干燥方法对高良姜片色泽、总酚含量、总黄酮含量、高良姜素含量、挥发性成分的影响。结果:冷冻干燥对总酚、总黄酮和高良姜素的综合保留最大,分别为总酚(20.95±0.13) mg/g、总黄酮(12.19±0.01) mg/g、高良姜素(11.45±0.03) mg/g,其次为真空加热干燥、热风干燥、微波干燥、太阳晒干、自然风干;自然风干和太阳干燥后的挥发性物质峰面积更低,其他4 种干燥方式峰面积统计值差别较小;微波干燥后色泽最深,红绿值a*为13.92,热风干燥次之,冷冻干燥颜色最浅。结论:不考虑成本生产高端产品时可选用冷冻干燥;考虑环保节能时选用太阳能干燥;一般工业生产建议选用传统热风干燥。

关键词: 高良姜, 干燥方法, 总酚, 总黄酮, 高良姜素, 色泽, 挥发性成分

Abstract: Objective: To explore the physicochemical properties of fresh and dried galanga (Alpinia officinarum Hance)
slices, and to further establish a drying method for the maximum retention of bioactives. Methods: The contents of total
phenols and flavonoids in galanga slices were determined by a spectrophotometer, galangin was quantitated by high
performance liquid chromatography, the volatile components were measured by gas chromatography, and the color was
evaluated by a colorimeter. Results: The abilities of different drying methods to retain total phenols, total flavonoids
and galangin were in the decreasing order of freeze drying > vacuum drying > hot air drying > microwave drying > sun
drying > shade drying. The contents of total phenols, total flavonoids and galangin in freeze-dried samples were (20.95 ± 0.13),
(12.19 ± 0.01), and (11.45 ± 0.03) mg/g, respectively. In terms of peak area, volatile components were lower in the
shade-dried and sun-dried samples. On the other hand, the four other drying methods differed little from each other. The
microwave-dried galanga had the deepest color with a* value of 13.92, followed by hot air drying, and the color of freezedried
was the lightest. Conclusion: Freeze drying can be used to produce high-quality products without concern about cost.
Sun drying is available for environmental protection and energy saving. The traditional hot air drying is recommended for
routine industrial production.

Key words: Alpinia officinarum Hance, drying method, total phenols, total flavonoids, galangin, color, volatile components

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