Determination by modified fluorometric method, of Thiamine Loss in commercial pasteurization of whole milk

Authors

  • José Glauco Grandi Universidade de São Paulo
  • Carmen Cecília Tadini Universidade de São Paulo

DOI:

https://doi.org/10.5433/1679-0359.1994v15n1p48

Keywords:

Thiamine, Loss of vitamin B1, Milk, Pasteurization.

Abstract

This research was undertaken, to check by fluorometric method, the loss of thiamine (Vitamin B1) of whole milk by commercial pasteurization. Analytical technique was the fluorometric assay method of the Association of Official Analytical Chemists - AOAC, with some modification, particularly in sample preparation and its purification with cation exchange resin normally used for dried milk or enriched dairy products. Samples'of whole, raw and pasteurized milk were analysed and the obtained results for raw milk were comparable to those of literature. For pasteurized milk, there was a loss from 18,5 up 50,0% of thiamine as a result of heat treatment.

 

Author Biographies

José Glauco Grandi, Universidade de São Paulo

Escola Politécnica da USP - Departamento de Eng. Química - Área de concentração: Engenharia de Alimentos - Caixa Postal, 61548 São Paulo SP - CEP 05424-970

Carmen Cecília Tadini, Universidade de São Paulo

 

Escola Politécnica da USP - Departamento de Eng. Química - Área de concentração: Engenharia de Alimentos - Caixa Postal, 61548 São Paulo SP - CEP 05424-970

Published

1994-01-15

How to Cite

Grandi, J. G., & Tadini, C. C. (1994). Determination by modified fluorometric method, of Thiamine Loss in commercial pasteurization of whole milk. Semina: Ciências Agrárias, 15(1), 48–52. https://doi.org/10.5433/1679-0359.1994v15n1p48

Issue

Section

Articles