Identification of roselle varieties through simple discriminating physicochemical characteristics using multivariate analysis

The objective of this work is to study the feasibility of a more objective and rigorous classification of the calices of Hibiscus sabdariffa based on their physicochemical profile. To do so, 19 analyses were carried out on 4 varieties of calices cultivated in Senegal: Vimto, Koor, Thaï and CLT92. Principal component analysis results showed that 15 physicochemical and biochemical parameters could be potentially used to discriminate the varieties of calices. Polyphenolic and anthocyanin contents were anti-correlated to protein content and could be used to differentiate the Vimto/CLT92 and the Koor/Thaï varieties. Within these two clusters, pH and lipid content could discriminate each variety. Finally, factorial discriminant analysis showed that total anthocyanin content, lipid content and chromaticity C* were the 3 parameters enabling the most efficient classification of calices according to variety and led to 100% classification accuracy.

Bibliographic Details

Main Authors:	Kane, Alé, Achir, Nawel, Cisse, Mady, Pallet, Dominique, Sakho, Mama, Dornier, Manuel
Format:	article biblioteca
Language:	eng
Subjects:	F60 - Physiologie et biochimie végétale, F70 - Taxonomie végétale et phytogéographie, Hibiscus sabdariffa, propriété physicochimique, http://aims.fao.org/aos/agrovoc/c_3604, http://aims.fao.org/aos/agrovoc/c_1521, http://aims.fao.org/aos/agrovoc/c_6970,
Online Access:	http://agritrop.cirad.fr/593252/ http://agritrop.cirad.fr/593252/1/593252.pdf
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