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Direct Research Journals
Direct Research Journal of Biology and Biotechnology:Vol.4 (4), pp. 46-50, July 2018
ISSN 4372-2608

Minerals Determination of Turmeric (Curcuma Longa Linn) Leaves and Rhizomes
Article Number: DRJA46257198

Original Research Article

Asagwara, J. O., Emeribe, E. O.* and Enoch, L. N.

Department of Crop Science and Biotechnology, Imo State University, Owerri, Nigeria.

*Corresponding author E-mail:

date Received: June 2, 2018     date Accepted: July 4, 2018     date Published: July 9, 2018


To investigate the mineral composition of Curcuma longa dried rhizomes. Activity directed mineral composition investigation of C. longa rhizomes using in vitro methods. The study was carried out at the medicinal plants section of National Root Crop Research Institute Umudike in Abia State, Nigeria. C. longa rhizomes were separately washed dried (at room temperature) and pulverized. The powdered rhizomes were then used for proximate analysis and mineral composition investigation. Values obtained for the proximate analysis of C. longa were; moisture (76.02%), carbohydrate (16.37%), ash (3.04%), crude fibre (1.95%), proteins (1.83%), and fat (0.80%) respectively. There was also a significant increase (P<0.05) in the percentage moisture content of C. longa rhizome. Mineral composition analysis of the rhizomes of C. longa gave the following values; iron (0.57%) > potassium (0.42%) > magnesium (0.05%) > phosphorus (0.03%) > calcium (0.02%) > sodium (0.01%) respectively. The current study revealed that C. longa rhizomes have high moisture content and is rich in steroids, anthraquinones and terpenes. Therefore, C. longa could be screened and investigated for novel pharmacologically active compounds to combat degenerative diseases for possible integration into the healthcare.

Keywords: Curcuma longa, proximate analysis, mineral composition