高压静电场对杏子热风干燥特性及色泽影响
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(新疆农业科学院农业机械化研究所,新疆 乌鲁木齐 830091)

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王庆惠(1980—),女,新疆农业科学院副研究员。E-mail:wangqh1201@126.com

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国家自然科学基金项目(编号:31460397)


Studies on the effects of high-voltage electric field on hot-air drying
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(Agricultural Mechanization Institute, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China)

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    摘要:

    研究干燥温度、风速以及高压静电场对杏子干燥特性及色泽变化的影响。结果表明:① 提高干燥温度或风速均能缩短干燥时间;② Weibull函数可以用于模拟杏子的干燥,尺度参数α与干燥温度和风速有关,并随干燥温度或风速的增加而减小,形状参数β与干燥方式有关;③ 杏子热风干燥的水分有效扩散系数在1.88×10-10~3.18×10-10 m2/s范围内变化,而干燥活化能为35.90 kJ/mol;④ 干燥温度对干燥后杏子的色泽变化有重要影响,增加高压静电场可获得较好的色泽。

    Abstract:

    The drying characteristics and color changing experiments of apricot were investigated under different drying temperatures, air velocities and high-voltage electric field respectively. The results were as following. ① The drying time was shortened by increasing air temperatures or velocities. ② Weibull function could simulate the drying curves of apricot. The scale parameter (α) related with the temperature and air velocity and decreased with the increasing of either drying temperature or velocity. The shape parameter (β) was depended on the drying method. ③ The moisture effective diffusivity coefficient was 1.88×10-10~3.18×10-10 m2/s, and the activation energy was 35.90 kJ/mol by hot-air drying. ④ Drying temperature had a marked impact on the color changing, and a nice color could gain by using high-voltage electric field.

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王庆惠,闫圣坤,李忠新,等.高压静电场对杏子热风干燥特性及色泽影响[J].食品与机械,2016,32(9):22-27.
WANGQinghui, YANShengkun, LIZhongxin, et al. Studies on the effects of high-voltage electric field on hot-air drying[J]. Food & Machinery,2016,32(9):22-27.

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  • 在线发布日期: 2023-03-09
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