Determination of Post Harvest Fungi and Proximate Composition of Amarantus hybridus Sold in Different Markets in Port Harcourt
Abstract
Study on the determination of post harvest fungi and proximate composition of Amaranthus hybridus sold in different markets of Port Harcourt was carried out in the Department of Plant Science and Biotechnology, Rivers State University. Six markets were selected for the study Viz: Rumuokoro, Rumuokwuta, Choba, Mile 1, Slaughter and mile 3. It control experiment conducted in the departmental Screen house, the method of Association of AnalyticalCchemist (AOAC, 2005) was used to assess the proximate composition of all the samples while the cultural laboratory technique was adopted for the Isolation and Characterization of associated post harvest fungi. Investigation of proximate composition shows the presence of moisture, ash, lipid, fibre, carbohydrate, protein and energy in all tested samples. However highest values of lipid (5.65 ± 0.65 %) and carbohydrate (4.2 ± 0.10%) were recorded for samples obtained from mile 1 market. Samples from Slaughter market recorded highest value of ash (2.45± 0.05%) and protein (12.55 ± 0.05%). Highest value of moisture (82.75 ± 0.25%), fibre (3.40 ± 0.00%) and energy (338.6 ± 0.8 kcal/kg) were recorded for Rumuokwuta, Mile 3 and control samples respectively. Five fungal organism (Candida sp, Mucor sp, Trichophytom sp, Penicillum sp, and Rhizopus sp) were Isolated in the present study. Although Mile 3 sample recorded the highest contamination Viz (Candida, Mucor, Trichophytom and Penicillum). Lowest contamination was recorded for Mile 1 sample as it indicated only the presence of Rhizopus. Generally all samples of A. hybridus assessed were rich in nutrient elements and had post harvest fungi. Notwithstanding, samples from Mile 1 had highest proximate composition nutrient and lowest post harvest fungal incidence.
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