Food and Fermentation Industries >

2023 , Vol. 49 >Issue 3: 234 - 242

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.030200

Quality characteristics of Dioscorea opposite by ultrasound-enhanced heat pump drying

  • XUE Yang ,
  • LIU Enchong ,
  • GENG Mingyang ,
  • LI Meng ,
  • SUN Xue ,
  • DONG Zhong ,
  • LIU Yunhong
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  • 1(School of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China)
    2(Food green processing and quality and safety control of Henan Province International Joint Laboratory, Luoyang 471000, China)
    3(Food Microbiology Engineering and Technology Research Center of Henan Province, Luoyang 471000, China)

Received date: 2021-11-24

  Revised date: 2022-01-05

  Online published: 2023-03-03

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Abstract

To explore the quality characteristics of Dioscorea opposite during contact ultrasound enhanced heat pump drying, Dioscorea opposite was dried by contact ultrasound enhanced heat pump equipment. The effects of different drying temperatures and ultrasound powers on the quality characteristics of samples were studied, and the optimal drying conditions were determined by weight analysis. Results showed that drying temperature and ultrasound power had significant effects on drying time, microstructure, hardness value, rehydration ratio, polyphenol content, polysaccharide content, and antioxidant activity. Under the conditions of drying temperature 65 ℃ and ultrasonic power 60 W, the drying time of the sample was the shortest, the hardness value was the smallest, and the rehydration ratio was the largest, which was 240 min, 628.39 g, and 2.31 g/g respectively. Under the conditions of drying temperature 55 ℃ and ultrasonic power 60 W, the polyphenol content and polysaccharide content of the sample were the largest, the ΔE value and the IC50 value were the smallest, which were 36.17 μg/g, 137.47 μg/g, 47.99 and 33.27 μg/mL respectively. The weighted analysis based on the coefficient of variation method showed that the comprehensive score of Dioscorea opposite samples obtained under the conditions of drying temperature 55 ℃ and ultrasonic power 60 W was the highest, which represented that the above parameters were the optimal parameters. The research results can provide a reference for the development and application of ultrasound-enhanced heat pump drying technology.

Key words： Dioscorea opposite; drying; contact ultrasound; heat pump drying; quality characteristics; weight analysis

Cite this article

XUE Yang , LIU Enchong , GENG Mingyang , LI Meng , SUN Xue , DONG Zhong , LIU Yunhong . Quality characteristics of Dioscorea opposite by ultrasound-enhanced heat pump drying[J]. Food and Fermentation Industries, 2023 , 49(3) : 234 -242 . DOI: 10.13995/j.cnki.11-1802/ts.030200

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