Pure Chemistry

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Browsing Pure Chemistry by Author "Anhawange, B.A."

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    Screening of Some Indigenous Wild Fruits for Anti-Nutritional Factors
    (Department of Chemistry, Faculty Of Natural And Applied Sciences, Nasarawa State University, Keffi, 2014-12-15) Tukura, Bitrus Wokhe; Anhawange, B.A.; Tyohemba, R.L.; Ogah, P.
    The levels of some anti-nutritional factors of some common indigenous wild fruits were assessed in order to determine their safety, since these fruits are widely eaten by the indigenes.Study Design: Five samples each of Chrysophyllum albidum (White Star Apple or Local Cherry),Persea americana (avocado pear) Dinnettia tripetala (pepper fruit), Diallium guineense (velvet tamarind), Annona muricata (Soursop) and Citrullus lanatus (water melon) sold in Railway market in Makurdi metropolis were collected and analysed for some anti-nutritional factors (hydrogen cyanide, phytate, tannins, alkaloids and oxalate). Place and Duration of Study: The study was conducted at the Department of Chemistry, Benue State University Makurdi between April and May, 2014. Methodology: The analysis was conducted using standard methods.Results: The results of hydrogen cyanide ranged between 0.01 mg/100g, to 0.31 mg/100g Tannins level in the fruits range between 0.03 mg/100g to 65.97 mg/100g. Alkaloids contents of the fruits were general very low (0.01 mg/100g to 0.11 mg/100g). The level of phytate observed in the fruits was found to be in the range 0.04 mg/100g to 0.43 g/100g. Oxalate was found to range between 0.01 mg/100g to 0.53 mg/100g. Conclusion: The result indicates that all the fruits had varying contents of the anti-nutritional factors which should be removed during processing hence continuous consumption may lead to accumulative effect which may be hazardous to heath.
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    Translocation of Trace Metals in Vegetable Crops Grown on Irrigated Soil along Mada River, Nasarawa State, Nigeria
    (Department of Chemistry, Faculty Of Natural And Applied Sciences, Nasarawa State University, Keffi, 2012-04-16) Tukura, Bitrus Wokhe; Anhawange, B.A.; Mohammed, Y.; Usman, N.L.
    Trace metals play an important role in the metabolic pathways during the growth and development of plants, when available in appreciable concentration. Pepper and okra vegetable crops were collected from irrigated farmlands along Mada River and separated into roots, stems, leaves and fruits. Concentrations of cadmium, copper, chromium, iron, nickel, lead, zinc and manganese were analyzed using atomic absorption spectrometry. Biological concentration factors (BCF), transfer factor (TF) and, biological accumulation coefficient (BAC) were calculated for assessment of mobility of trace metals from soilroot, root-shoot and soil-shoot, respectively. Mobility index (MI) was also calculated for roots-stems, stems-leaves and stems-fruits. The results showed concentration dependent variables of heavy metal levels between vegetables. Accumulation gradient of each crop component varies according to nature of the vegetable. MI of metals among components in okra exceeded in roots-stems and the least in stems-fruits. MI for the stems-leaves and roots-stems in pepper were the highest and lowest, respectively. Cr was the most mobile metal and Ni the least. TF and BAC values for Cd in okra and pepper were high. TF, BAC and BCF values for trace metals in okra at farm B were higher than in pepper.