食品科学 ›› 2001, Vol. 22 ›› Issue (7): 28-32.

• 基础研究 • 上一篇    下一篇

番茄浆料的流变特性研究

罗昌荣, 麻建国, 许时婴   

  1. 无锡轻工大学食品学院
  • 出版日期:2001-07-15 发布日期:2012-02-13

Study on Rheological Properties of Tomato Purees

 LUO  Chang-Rong,   Ma-Jian-Guo,   Xu-Shi-Ying   

  • Online:2001-07-15 Published:2012-02-13

摘要: 对不同浓度 (15、 18、 20和 24° Brix)的番茄浆料分别在 30、 40、 50和 60℃时的流变学性质进行了研究。结果显示,番茄浆料为假塑体系,屈服应力值的范围比较宽 (40- 140Pa)。通过回归分析,发现数学模型, K=K0exp(Ea/RT)和 K=Aexp(BC),可以分别用来描述温度和浓度对番茄浆料稠度系数的影响。在实验条件下,实验值能够很好地拟合模型。并且推导出温度和浓度同时对番茄浆粘度影响的方程。利用这些方程,可以预测实际加工中不同温度和不同浓度下番茄浆料的粘度。

关键词: 番茄浆料, 浓度, 温度, 流变特性

Abstract: The rheological properties of tomato purees determined at four temperatures,30,40,50 and 60℃ ,and four different concentrations,15,18,20and 24° Brix showed that the systems exhibited pseudoplastic behavior with large magnitudes of Casson yield stresses(40- 140Pa).Two models,K=K0exp(Ea/RT) and K=Aexp(BC),could be used to describe the effect of temperature and concentration on the consistency coefficient of tomato purees respectively.by regression analysis.The results have also showed that those two models were fitted to the experimental data well within the experimental conditions used in this study.Some equations that described the effects of temperature and concentration on the viscosities of tomato purees at the same time were derived.And these equations could be utilized to predict the viscosities of tomato purees processed at different temperatures and different concentrations.

Key words: Tomato puree Concentration Temperature Rheological properties