| 欧姆加热过程中苹果浆的电导率及VC降解规律研究 |
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| 引用本文： | 郭芳,赵武奇,尹贻童,夏鑫淼.欧姆加热过程中苹果浆的电导率及VC降解规律研究[J].农产品加工．学刊,2011(6):26-30. |
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| 作者姓名： | 郭芳 赵武奇 尹贻童 夏鑫淼 |
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| 作者单位： | 陕西师范大学,食品工程与营养科学学院,陕西西安,710062 |
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| 摘 要： | 研究了苹果浆的欧姆加热规律及VC的降解动力学,考察了温度和果浆含量对电导率的影响以及电场强度、果浆含量对加热速率的影响。结果表明,苹果浆的电导率随温度的升高而增大,且呈线性关系;随着果浆含量的增加,电导率和加热速率都在增加;随着电场强度的增大,加热速率增加。苹果浆中VC对热不稳定,苹果浆中VC降解符合动力学一级反应,得到的苹果浆中VC的预测模型,经验证与实测值拟合较好,表明该模型是合理的。
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| 关 键 词： | 苹果浆 欧姆加热 电导率 VC 动力学 |
Electrical Conductivitiy and Degradation Law about VC in Apple Pulp during Ohmic Heating |
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| Guo Fang,Zhao Wuqi,Yin Yitong,Xia Xinmiao.Electrical Conductivitiy and Degradation Law about VC in Apple Pulp during Ohmic Heating[J].Nongchanpin Jlagong.Xuekan,2011(6):26-30. |
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| Authors: | Guo Fang Zhao Wuqi Yin Yitong Xia Xinmiao |
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| Institution: | Guo Fang,Zhao Wuqi,Yin Yitong,Xia Xinmiao(College of Food Engineering and Nutritional Science,Shaanxi Normal University,Xi'an,Shaanxi 710062,China) |
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| Abstract: | Ohmic heating behavior of apple pulp is studied in this paper,including the influence of temperature and apple pulp content on electrical conductivitiy,the influence of electrical field strength and apple pulp content on heating rate,and degradation kinetics of VC in apple pulp is also studied.The results show that the electrical conductivitiy of apple pulp increases with temperature;the electrical conductivitiy and heating rate increase with apple pulp content,and the electrical conductivitiy increases wit... |
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| Keywords: | apple pulp ohmic heating electrical conductivitiy VC dynamics |
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