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Articles by Z. Ladan
Total Records ( 2 ) for Z. Ladan
  Z. Ladan , E.M. Okonkwo , J.O. Amupitan , E.O. Ladan and B. Aina
  Hyptis spicigera seed oil was characterized using GC-MS and UV-VIS spectrometry for its fatty acid composition, tocopherol content and physicochemical properties. The oil content was 21% while unsaturated fatty acids were linoleic acid (71.85%) and Palmitic acid (16.06%) as predominant fatty acids. Tocopherol content was 186.15 mg mL-1 while Vitamin A was absent. This study showed potentials of Hyptis spicigera seed oil to have high oxidative stability which could be suitable for food and beverage as well as other industrial applications while the tocopherol content could improve human health.
  A.M. Chia , D.S. Abolude , Z. Ladan , O. Akanbi and A. Kalaboms
  Evidence from research in most countries of the world has shown that Cyanobacteria blooms could exhibit acute and chronic toxicity to man and animals alike. Despite the availability of records from other countries of the world, there is no information on the occurrence of these toxins in Northern Nigeria. This study reports the findings of a survey for the occurrence of microcystins in aquatic ecosystems in Zaria Northern Nigeria, using Enzyme Linked Immunosorbent Assay (ELISA) based methods. Five out of the 15 aquatic systems surveyed had microcystins concentrations higher than the acceptable limits (1 μg L-1) for portable drinking water. A total of eight Cyanobacteria species were recorded in this survey namely: Anabaena sp., Microcystis sp., Spirulina sp., Merismopedium sp., Gloetrichia sp., Cylindrospermopsis sp. and Anabaenopsis sp. In all the water bodies surveyed Anabaena sp. and Microcystis sp. had the highest frequency of occurrence and biomass (No. of cells per litre of water).
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