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Metal content and physicochemical parameters used as quality criteria in virgin argan oil: influence of the extraction method. | LitMetric

Metal content and physicochemical parameters used as quality criteria in virgin argan oil: influence of the extraction method.

J Agric Food Chem

Departamento de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Granada, Campus de Cartuja, C.P. 18012, Granada, Spain.

Published: August 2008

Metal content was determined in 26 samples of virgin argan oil from Morocco. An ETA-AAS with previous sample dilution with MIBK technique was used. In oil obtained by traditional method, Fe ranged from 0.8 to 4.0 mg/kg, Cu from 160.4 to 695.7 microg/kg, Cr from 10.3 to 55.3 microg/kg, Mn from 18.1 to 70.8 microg/kg, and Pb from 28.5 to 450.0 microg/kg. In oil obtained by a half-industrialized method, Fe ranged from 0.8 to 1.7 mg/kg, Cu from 158.4 to 385.0 microg/kg, Cr from 10.0 to 48.1 microg/kg, Mn from 15.0 to 68.5 microg/kg, and Pb from 32.0 to 100.0 microg/kg. Acidity value, peroxide index, K270 and K232, humidity and sludge volatile, and insoluble sludges in petroleum ether were also determined. A high variability in these quality parameters and a decrease of the quality in the oils obtained by the traditional method were observed.

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Source
http://dx.doi.org/10.1021/jf801002wDOI Listing

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