Study on the Drying Characteristics and Physicochemical Properties of Alfalfa under High-Voltage Discharge Plasma

Wenhao Hu, Zhiqing Song (), Qingjie Ma, Bufan Li, Mingjie Zhang, Changjiang Ding, Hao Chen and Shenghou Zhao
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Wenhao Hu: College of Science, Inner Mongolia University of Technology, Hohhot 010051, China
Zhiqing Song: College of Electric Power, Inner Mongolia University of Technology, Hohhot 010080, China
Qingjie Ma: College of Science, Inner Mongolia University of Technology, Hohhot 010051, China
Bufan Li: College of Science, Inner Mongolia University of Technology, Hohhot 010051, China
Mingjie Zhang: College of Electric Power, Inner Mongolia University of Technology, Hohhot 010080, China
Changjiang Ding: College of Electric Power, Inner Mongolia University of Technology, Hohhot 010080, China
Hao Chen: College of Science, Inner Mongolia University of Technology, Hohhot 010051, China
Shenghou Zhao: Branch of Tumote Left Banner, Ecological Environment Bureau of Hohhot, Hohhot 010100, China

Agriculture, 2024, vol. 14, issue 7, 1-18

Abstract: High-voltage discharge plasma drying (HVDPD) is a non-thermal and efficient drying technique. In this study, we compared the drying characteristics and physicochemical properties of alfalfa dried via HVDPD, hot-air drying (HAD), and natural air-drying (AD) and analyzed the experimental results using infrared spectroscopy, scanning electron microscopy, colorimetry, and other detection techniques. The results showed that HVDPD had a higher drying rate than AD and saved more energy than HAD. Alfalfa dried via HVDPD had the most intact internal structure, the highest rehydration ratio (RR), the best color quality, and the best nutrient retention, resulting in the highest relative quality and feeding value. Therefore, HVDPD is an excellent drying technique for alfalfa, providing a new and effective way to improve the storage, transportation, and drying quality of alfalfa.

Keywords: HVDPD; alfalfa; drying characteristics; SEM; nutritional components (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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