热风辅助射频间歇干燥对稻米理化特性的影响(英文稿)
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Key Laboratory of Agro-Products Postharvest Handling, Ministry of Agriculture (KLAPPH2-2017-03)


Effects of hot air assisted radio frequency intermittent drying with tempering on the physicochemical properties of rough rice
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    摘要:

    论文采用热风辅助射频干燥和间歇缓苏技术进行了稻谷产后处理。研究了极板间距(100、110、120 mm)、物料温度(50、55、60°C)、风速(0.5、1.5、2.5 m/s)等参数对稻米品质(整精米产量、破碎率、垩白度、长宽比、不良粒率、脂肪酸值和新鲜度)的影响,获得了最优干燥工艺条件为:极板间距110 mm、物料温度60°C、风速2.5 m/s。研究表明,与热风干燥相比,射频加热提高整精米产量、新鲜度,降低破碎率分别高达16.21%、36.48%和26.45%。热风辅助射频干燥和热风干燥样品的黄度、长宽比和脂肪酸值差异不显著(P > 0.05),而前者的垩白度略高于后者。研究结果对于工业规模上应用热风辅助射频干燥技术改善稻米品质具有重要的指导意义。

    Abstract:

    Abstract: Hot Air Assisted Radio Frequency (HARF) drying with multistage tempering was applied for post-harvest treatment of rough rice. The effects of HARF drying were explored about various parameters such as electrode gap (100, 110, 120 mm), material temperature (50, 55, 60°C) and air velocity (0.5, 1.5, 2.5 m/s) along with Hot Air Drying (HAD) on rice quality. In this study, optimal HARF drying condition was recorded at electrode gap of 110 mm, temperature of 60°C and hot air velocity of 2.5 m/s. After milling, the Head Rice Yield (HRY), broken percentage, chalkiness, length to width (L/W) radio, percentage of unsound kernels, fatty acid value and degree of freshness were estimated. Results indicated that RF heating significantly enhanced HRY and degree of freshness while reducing the broken percentage up to 16.21%, 36.48% and 26.45% respectively, as compared to HAD. Yellowness, length to width ratio and fatty acid value of HAD and HARF dried samples were statistically not significant (P > 0.05), while chalkiness of HARF dried rice was slightly higher than HAD samples. The research findings are critical for application of HARF drying on industrial scale to improve the quality of rice.

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马哈默德·纳韦德,张悦,尹君,刘嫣红.热风辅助射频间歇干燥对稻米理化特性的影响(英文稿)[J].农业工程学报,2022,38(Z):331-338. DOI:10.11975/j. issn.1002-6819.2022. z.038

Mahmood Naveed, Zhang Yue, Yin Jun, Liu Yanhong. Effects of hot air assisted radio frequency intermittent drying with tempering on the physicochemical properties of rough rice[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),2022,38(Z):331-338. DOI:10.11975/j. issn.1002-6819.2022. z.038

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  • 收稿日期:2022-01-07
  • 最后修改日期:2022-10-24
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  • 在线发布日期: 2023-02-07
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