Developing Effective Radio Frequency Vacuum Drying Processes for Moutan Cortex: Effect on Moisture Migration, Drying Kinetics, Physicochemical Quality, and Microstructure Article Swipe

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Zepeng Zang , Fangxin Wan , Haiwen Jia , Guojun Ma , Yanrui Xu , Qiaozhu Zhao , Bowen Wu , Hong‐Yang Lu , Xiaopeng Huang ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.3390/foods13142294

This study aims to maximize the post-harvest quality of Moutan Cortex and reduce energy consumption. Radio frequency vacuum (RFV) technology was used to dehydrate Moutan Cortex in this study to investigate the effects of different drying temperatures, plate spacing, and vacuum degree on the drying kinetics, physicochemical quality, and microstructure of Moutan Cortex. The results showed that RFV drying shortened the dehydration time of the Moutan Cortex by 10.71–28.57% and increased the drying rate by 15.79–54.39% compared to hot-air drying. The best color (∆E = 6.08 ± 0.28, BI = 26.97 ± 0.98) and relatively high retention of polysaccharides, total phenolics, total flavonoids, antioxidant properties, paeonol, gallic acid, paeoniflorin, and benzoylpaeoniflorin contents were observed in the dried products of Moutan Cortex at a drying temperature of 50 °C, spacing of 90 mm, and vacuum of 0.025 MPa. Analyzing the microstructure, it was found that RFV drying could effectively inhibit the shrinkage and collapse of the cellular structure, and a regular and loose honeycomb pore structure appeared inside the samples, which contributed to the rapid migration of the internal moisture. This study can provide a theoretical reference basis for the selection and application of industrialized processing methods of high-quality Moutan Cortex.

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High-Performance Liquid Chromatography

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Microstructure Moisture Paeonol Paeoniflorin Gallic acid Chemistry Cortex (anatomy) Shrinkage Food science Materials science Kinetics Chemical engineering Composite material Chromatography Antioxidant Organic chemistry High-performance liquid chromatography Medicine Psychology Pathology Engineering Physics Alternative medicine Neuroscience Quantum mechanics

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/foods13142294
PDF: https://www.mdpi.com/2304-8158/13/14/2294/pdf?version=1721703766
OA Status: gold
Cited By: 6
References: 56
Related Works: 10
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DOI: https://doi.org/10.3390/foods13142294

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Title: Developing Effective Radio Frequency Vacuum Drying Processes for Moutan Cortex: Effect on Moisture Migration, Drying Kinetics, Physicochemical Quality, and Microstructure

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Language: en

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Publication year: 2024

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Publication date: 2024-07-21

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Authors: Zepeng Zang, Fangxin Wan, Haiwen Jia, Guojun Ma, Yanrui Xu, Qiaozhu Zhao, Bowen Wu, Hong‐Yang Lu, Xiaopeng Huang

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Landing page: https://doi.org/10.3390/foods13142294

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Concepts: Microstructure, Moisture, Paeonol, Paeoniflorin, Gallic acid, Chemistry, Cortex (anatomy), Shrinkage, Food science, Materials science, Kinetics, Chemical engineering, Composite material, Chromatography, Antioxidant, Organic chemistry, High-performance liquid chromatography, Medicine, Psychology, Pathology, Engineering, Physics, Alternative medicine, Neuroscience, Quantum mechanics

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Cited by: 6

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Citations by year (recent): 2025: 5, 2024: 1

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