Effect of Different Drying Methods on the Mineral Content of Three Accessions of Roselle  (Hibiscus sabdariffa) Calyces

B. Amoasah; F. Appiah; P. Tandoh; E. Amoateng

doi:10.9734/ajarr/2019/v5i330133

Research Article Open access CC BY 4.0

Effect of Different Drying Methods on the Mineral Content of Three Accessions of Roselle (Hibiscus sabdariffa) Calyces

B. Amoasah, F. Appiah, P. Tandoh, E. Amoateng

Asian Journal of Advanced Research and Reports · pp. 1–10 · Published 20 Jul 2019

10.9734/ajarr/2019/v5i330133

Abstract

Fresh Roselle (Hibiscus sabdariffa l.) calyces have shorter shelf life due to their high moisture content. In order to extend their shelf life, Roselle calyces are dried. However, the effect of different drying methods on mineral composition are not sufficiently reported. A study was therefore conducted to determine the influence of oven, solar and sun drying methods on the mineral content of three accessions (HS11, HS41 and HS89) of roselle calyces grown in Ghana. A 3×3 factorial experiment laid in Completely Randomized Design (CRD) with three replications was used. The roselle accessions were harvested 12 weeks after planting. Sodium, magnesium, calcium, zinc, potassium, phosphorus and iron were the mineral elements analyzed for using recommended procedures. The study showed that accession HS41 had the highest calcium, iron, potassium, phosphorus and zinc content being (0.98%), (8.36 mg/kg), (0.60%), (0.36%), and (2.34mg/kg) respectively. Accession HS89 had the highest magnesium (0.55%) and sodium content (0.030%). With respect to methods of drying, sun recorded significantly highest calcium (0.81%), iron (6.77mg/kg), magnesium (0. 42%), sodium (0.03%), and zinc content (1.93mg/kg). On the other hand, Oven drying resulted in the highest potassium (0.58%) and phosphorus content (0.34).

Roselle accessions drying methods minerals Calyx

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B. Amoasah, F. Appiah, P. Tandoh, E. Amoateng (2019). Effect of Different Drying Methods on the Mineral Content of Three Accessions of Roselle (Hibiscus sabdariffa) Calyces. Asian Journal of Advanced Research and Reports , 1–10. https://doi.org/10.9734/ajarr/2019/v5i330133

Affiliations

B. Amoasah — Department of Horticulture, Kwame Nkrumah University of Science and Technology Kumasi, Ghana.
F. Appiah — Department of Horticulture, Kwame Nkrumah University of Science and Technology Kumasi, Ghana.
P. Tandoh — Department of Horticulture, Kwame Nkrumah University of Science and Technology Kumasi, Ghana.
E. Amoateng — Department of Horticulture, Kwame Nkrumah University of Science and Technology Kumasi, Ghana.

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