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

Main Article Content

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

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).

Keywords:
Roselle, accessions, drying methods, minerals, Calyx

Article Details

How to Cite
Amoasah, B., Appiah, F., Tandoh, P., & Amoateng, E. (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, 5(3), 1-10. https://doi.org/10.9734/ajarr/2019/v5i330133
Section
Original Research Article

References

Wong PK, Salmah Y, Ghazali YM, Yaakob CM. Physicochemical characteristics of roselle (Hibiscus sabdariffa L.). Nutrition and Food Science. 2002;32:68-73.

Bolade MK, Oluwalana IB, Ojo O. Commercial practice of roselle (Hibiscus sabdariffa L.) beverage production: Optimization of hot water extraction and sweetness level. World Journal of Agricultural Sciences. 2009;5(1):126-131.

Tseng T, Kao T, Chu C, Chou F, Lin W, Wang C. Induction of apoptosis by hibiscus protocatechuic acid in human leukaemia cells via reduction of renoblastoma (RB) phosphorylation and Bcl-2 expression. Biochemical Pharmacology. 2000;60:307–315.

Untoro J, Karyadi E, Wibowo L, Erhardt MW, Gross R. Multiple micronutrient supplements improve micronutrient status and anemia but not growth and morbidity of Indonesian infants: A randomized, double-blind, placebo-controlled trial. The Journal of nutrition. 2005;135(3):639S-645S.

Wankhade P, Sapkal R, Sapkal V. Drying Characteristics of okra slices on drying in hot air dryer. Procedia Engineering. 2013;51:371-374.

Zanoni B, Peri C, Giovanelli G, Nani R. Study of oxidative heat damage during tomato drying. Acta Horticulturae (ISHS) 2008;487:395-400. Marfil PHM, Santos EM, Telis VRN. Ascorbic acid degradation kinetics in tomatoes at different drying conditions. Food Science and Technology. 1999;41:1642-1647

Torres JA, Motoki M, Karel M. Microbial stabilization of intermediate moisture food surfaces I. Control of surface preservative concentration. Journal of Food Processing and Preservation. 1985;9(2):75-92.

Krokida MK, Maroulis ZB, Saravacos GD. The effect of method of drying on colour of dehydrated product. Int J Food Sci Technol. 2001;36:53–59.

Mujumdar AS, Law CL. Drying technology: Trends and applications in postharvest processing. Food and Bioprocess Technology. 2010;3(6):843-852.

A.O.A.C. Official methods of analysis, association of official analytical chemist. EUA; 2000.

Fajar B, Satriadi H, Yuariski O, Nugroho RS, Shobib A. Thin layer drying kinetics of Roselle. Adv. J. Food Sci. Technol. 2012;4(1):51-55.

Langova J, Jaisut D, Thuwapanichayanan R, Phowong C, Stencl J, Jovanovic D, Fryc J, Vlasek V. Modelling the moisture sorption isotherms of Roselle (Hibiscus sabdariffa L.) in the temperature range of 5-35°C. Acta Univ. Agric. et Silvic.Mendel. Brun. 2013;61(6):1769-1777.

Amoasah B, Appiah F, Kumah P. Effects of different drying methods on proximate composition of three accessions of roselle (Hibiscus sabdariffa) Calyce. International Journal of Plant & Soil Science. 2018;21(1):1-8.

Abugre C, Appiah F, Kumah P. The effect of time of harvest and drying method on nutritional composition of spider flower (Cleome gynandra L). International Journal of Postharvest Technology and Innovation. 2011;2(3):221-232.

Brown KH. The importance of dietary quality versus quantity for weanlings in the developed countries. A framework for discussion. Food and Nutrition Bulletin. 1991;13(2):86-93.

Carolyn DB. Advanced nutrition micronutrients. New York, NY: CRC Press. 1998;172–193.

Adanlawo IG, Ajibade VA. Nutritive value of the two varieties of roselle (Hibiscus sabdariffa L.) calyces soaked with wood ash. Pakistan Journal of Nutrition. 2006;5(6):555-557.

Okoli JN, Basic nutrition and diet therapy. University of Nigeria press Ltd. UNN Nigeria. 2009;74.

USDA. Basic Report: 09311, roselle, raw. National Nutrient Database for Standard Reference Release 28; 2016.

Atiq-Ur-Rahman SA, Qadiraddin M, Shanim Q. Elemental analysis of Calendula. Officinalis plant and its probable therapeutic roles in health. Pakistan Journal of Science and Industrial Research. 2003;46:283-287.