食品科学 ›› 2009, Vol. 30 ›› Issue (5): 91-95.doi: 10.7506/spkx1002-6630-200905020

• 基础研究 • 上一篇    下一篇

甘薯泥粘度数学模型预测

阮振华,许宏贤,段 钢*   

  1. 无锡杰能科生物工程有限公司
  • 收稿日期:2008-04-17 修回日期:2008-08-07 出版日期:2009-03-01 发布日期:2010-12-29
  • 通讯作者: 段 钢* E-mail:gangduan@danisco.com

Mathematical Model for Predicting Apparent Viscosity of Mashed Sweet Potato

RUAN Zhen-hua,XU Hong-xian,DUAN Gang*   

  1. (Genencor Wuxi Bioproduct Co. Ltd., Wuxi 214028, China)
  • Received:2008-04-17 Revised:2008-08-07 Online:2009-03-01 Published:2010-12-29
  • Contact: DUAN Gang* E-mail:gangduan@danisco.com

摘要:

考察了不同干物浓度和不同温度下甘薯浆的流变学特性。结果表明,甘薯浆属于典型的假塑型流体,且干物浓度和温度对其黏稠系数影响显著,幂律模型可以较好地拟合甘薯浆流动行为。甘薯浆表观黏度随着温度和剪切速率的增加而逐渐下降,呈现剪切变稀的趋势。建立了影响因子为温度和干物浓度的数学模型来预测甘薯浆的表观黏度,采用平均百分误差、卡方检验、建模效率等统计学参数对该模型评估发现其拟合精度较高。

关键词: 甘薯泥, 表观粘度, 数学模型

Abstract:

The rheological properties of mashed sweet potato were studied by using HAKKE viscometer at different temperatures and concentrations of dry substrate. The results showed that mashed sweet potato is typical pseudoplasticity fluid, and its flow behaviour can be preferably described by the power law model. Its apparent viscosity decreases with the increase of temperature and shear rate, and presents shear thinning tendency. For predicting the apparent viscosity of mashed sweet potato, this study developed some useful mathematical models with temperature and substrate concentration as influence factors. Through the evaluation of various statistical parameters such as mean percentage error, chi-square, modeling efficiency, these models were proved to have high fitting precision.

Key words: mashed sweet potato, apparent viscosity, mathematic model

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