首页    期刊浏览 2024年10月06日 星期日
登录注册

文章基本信息

  • 标题:Thermophysical and rheological properties of dulce de leche with and without coconut flakes as a function of temperature
  • 本地全文:下载
  • 作者:Barbosa, Vanessa Camarinha ; Garcia-Rojas, Edwin Elard ; Coimbra, Jane Sélia dos Reis
  • 期刊名称:Food Science and Technology (Campinas)
  • 印刷版ISSN:0101-2061
  • 电子版ISSN:1678-457X
  • 出版年度:2013
  • 卷号:33
  • 期号:1
  • 页码:93-98
  • DOI:10.1590/S0101-20612013005000009
  • 语种:English
  • 出版社:Sociedade Brasileira de Ciência e Tecnologia de Alimentos
  • 摘要:

    Dulce de leche (DL), a dairy dessert highly appreciated in Brazil, is a concentrated product containing about 70% m/m of total solids. Thermophysical and rheological properties of two industrial Brazilian Dulce de leche formulations (classic Dulce de leche and Dulce de leche added with coconut flakes 1.5% m/m) were determined at temperatures comprised between 28.4 and 76.4 °C. In general, no significant differences (p < 0.05) were observed in the presence of coconut flakes in the two formulations. Heat capacity varied from 2633.2 to 3101.8 J/kg.°C; thermal conductivity from 0.383 to 0.452 W/m.°C; specific mass from 1350.7 to 1310.7 kg/m³; and, thermal diffusivity from (1.082 × 10-7 to 1.130 × 10-7) m²/s. The Bingham model was used to properly describe the non-Newtonian behavior of both formulations, with yielding stress values varying from 27.3 to 17.6 Pa and plastic viscosity from 19.9 to 5.9 Pa.s.

  • 关键词:modelo de Bingham;doce de leite;capacidade calorífica;condutividade térmica;densidade;difusividade térmica
  • 其他关键词:Bingham model;dulce de leche;heat capacity;thermal conductivity;specific mass;thermal diffusivity
国家哲学社会科学文献中心版权所有