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Preliminary study on the application of an electric field as a method of preservation for virgin olive oil/Estudo preliminar de uma aplicacao de campo eletrico como um metodo de conservacao de azeite virgem
The objective of this study was to analyze the effect of an electric field treatment (voltage: 3 kV [cm.sup.-1], frequency: 60 Hz and time: of 5 and 25 min) on the stability of unsaturated fatty acids in virgin olive oil. Unsaturated fatty acid oxidation in the virgin olive oil was analyzed by Fouri...
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Published in: | Acta scientiarum. Technology 2016-07, p.291 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | Spanish |
Online Access: | Get full text |
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Summary: | The objective of this study was to analyze the effect of an electric field treatment (voltage: 3 kV [cm.sup.-1], frequency: 60 Hz and time: of 5 and 25 min) on the stability of unsaturated fatty acids in virgin olive oil. Unsaturated fatty acid oxidation in the virgin olive oil was analyzed by Fourier transform infrared spectroscopy in the mid infrared region, and by quality parameters (acidity, peroxide and iodine). The electric field is a suitable method to preserve this oil composition with minimal modifications without the synthetic antioxidant addition. Keywords: electric field, fatty acids, Fourier transform infrared spectroscopy, virgin olive oil. O objetivo deste estudo foi analisar o efeito de um tratamento de campo eletrico (tensao: 3 kV [cm.sup.-1], frequencia: 60 Hz e tempo: 5 a 25 min) sobre a estabilidade de acidos graxos insaturados em azeite de oliva virgem. A oxidacao de acidos graxos insaturados em azeite foi analisada por meio de espectroscopia de infravermelho com Transformada de Fourier na regiao media do infravermelho, e pelos parametros de qualidade (acidez, peroxidos e iodo). O campo eletrico e um metodo adequado para preservar a composicao do oleo, com modificacoes minimas, sem a adicao de antioxidantes sinteticos. Palavras-chave: acidos graxos, campo eletrico, espectroscopia do infravermelho com transformada de Fourier, azeite de oliva virgem. |
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ISSN: | 1806-2563 |
DOI: | 10.4025/actascitechnol.v38i3.28020 |