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dc.contributor.advisor Mphosi, M. S. Mutshekwa, Ndivhuho 2018-03-12T09:03:22Z 2018-03-12T09:03:22Z 2017
dc.description Thesis (M. Sc. (Agriculture)) --University of Limpopo, 2017 en_US
dc.description.abstract Tea is one of the most popular consumed beverages in the world, which has beneficial properties such as anti-oxidization, anti-carcinoma and preventing arteriosclerosis. The major essential components of catechins present in tea leaves, includes epigallocatechin gallate (EGCG), epigallocatechin (EGC), epicatechin gallate (ECG), epicatechin (EC), gallocatechin (GC) and catechin (C). Influence of time-based hot air drying method on chemical composition of the Jatropha zeyheri Sond, widely consumed in rural communities of Zebediela (Khureng village), Limpopo Province, South Africa, was investigated. Four treatments, namely; 0, 24, 48, and 72 hours, were arranged in completely randomised design (CRD), replicated five times. The study demonstrated that drying significantly increased total phenolic content, total antioxidant capacity and tannin content. It also demonstrated that drying significantly increased minerals elements; Mg, K, P, S, Al, Co, Mn, Si and Zn content and decreased Na, Ca and Ni and Zn quantities. Sodium-potassium ratio was very low across drying periods. Drying time did not significantly influence proximate chemicals; energy, protein, carbohydrates, ash and fibre content. Moisture and fat were significantly increased by drying period. Results of the study suggested that time-based hot air drying method improved the chemical composition of J. zeyheri, which has the potential of enhancing nutrition in marginal rural communities of Limpopo Province. en_US
dc.format.extent xii, 57 leaves en_US
dc.language.iso en en_US
dc.publisher University of Limpopo en_US
dc.relation.requires PDF en_US
dc.subject Tea en_US
dc.subject Hot air drying method en_US
dc.subject.lcsh Hot-air heating en_US
dc.subject.lcsh Drying en_US
dc.subject.lcsh Food -- Solar drying -- Equipment and supplies en_US
dc.title Effect of time-based hot air drying method on chemical composition of jatropha zeyheir tea en_US
dc.type Thesis en_US

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