Title:Impact of Different Soil Enrichments on the Physicochemical and Antioxidant Potential of Red and White Calyx from Roselle (Hibiscus sabdariffa L.)
VOLUME: 12 ISSUE: 2
Author(s):Benoit B. Koubala, Sorto Haroune and Moksia Froumsia
Affiliation:Department of Chemistry, Faculty of Science, University of Maroua, P.O. Box: 55/814 Maroua, Cameroon.
Keywords:Hibiscus sabdariffa, calyx, manure, nutritional qualities.
Abstract:The red and white Hibiscus sabdariffa, were grown on a control soil and on soils enriched
with organic manure, cow dung, goat dung, chicken droppings and NPK chemical fertilizers. Calyxes
were gathered and characterized for their physicochemical and antioxidant potential. Results showed
that the soil enrichment significantly (p < 0.05) affects the physicochemical properties of the two
types of calyx. The red calyx exhibited the best nutritional value compared to the white one. Red calyx
was richer in ash (18-23 mg / g fresh matter), calcium (2.21 to 4.34 mg / g), iron, manganese, fibres and phenolic compounds
(5.1 to 7.4 mg / g) than the white calyx. However the later exhibited highest values of organic acids, copper and
lipid content. Calyx harvested on soil enriched with organic manure had the best physicochemical characteristics compared
to those obtained from soil enriched with NPK fertilizers. It is thus advisable to enrich soils with organic manure or
chicken drops.
