Journal of Food Technology

Year: 2008
Volume: 6
Issue: 1
Page No. 9 - 13

Physico-Chemical Characteristics of Turmeric Genotypes Cultivated in Nigeria as Potential Sources of Commercial Colourants

Authors : U.J. Ukpabi , N.J. Ogbogu , H.A. Etudaiye and A.O. Olojede

Abstract: Powdered dried rhizomes of the major turmeric genotypes (Cl-1, Cl-2) cultivated in Nigeria were physico-chemically analysed (with the aid of laboratory methods and local consumers) for their potential as sources of commercial colourants. Results showed that the colour of the dilute (0.5%) liquid extracts of the dried (at 50, 60 and 70C) turmeric samples was generally yellow, yellow-orange, lemon-yellow and orange with cold water, hot water, acetone and ethanol, respectively. The organoleptic analysis with local food consumers showed that the experimental turmeric powder samples were generally liked. At the ratio of 1:2000 (turmeric powder: rice w/w), the yellowish cooked rice, coloured by the pigments in some turmeric powder samples was liked much by these local consumers. Furthermore, the commercial oleoresin content of the dehydrated curcuminoid rich turmeric rhizome samples was found to be 14.80 and 14.00% for NCl-1 and NCl-2 genotypes, respectively.

How to cite this article:

U.J. Ukpabi , N.J. Ogbogu , H.A. Etudaiye and A.O. Olojede , 2008. Physico-Chemical Characteristics of Turmeric Genotypes Cultivated in Nigeria as Potential Sources of Commercial Colourants . Journal of Food Technology, 6: 9-13.

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