Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/202410
Type: Artigo de periódico
Title: Titulação potenciométrica aplicada na determinação de ácidos graxos livres de óleos e gorduras comestíveis
Title Alternative: Potentiometric titration applied to free fatty acid determination of edible oils and fats
Author: Osawa, Cibele Cristina
Gonçalves, Lireny Ap. Guaraldo
Ragazzi, Sidnei
Abstract: Free fatty acids are a measure of evaluating fats and oils, submitted to abusive conditions, besides being a quality characteristic of edible vegetable oils. The official method of determination (AOCS Ca 5a-40, 2004) is based on titration, using phenolphthalein as an indicator. For crude and degummed oils, the titration end point is difficult to be observed due to the high level of pigments, resulting in dark solutions. In this case and others, such as self-life studies, in which sample quantities are limited, potentiometric titration may be a very good alternative.
Subject: free fatty acid determination
potentiometric titration
oil and fat quality
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 29, n. 3, p. 593-599, 2006.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422006000300031
Address: http://dx.doi.org/10.1590/S0100-40422006000300031
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422006000300031
Date Issue: 1-Jun-2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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