4 results for “mineral feed supplements”

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Research ArticleOpen accessIn the keywordsBioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with BiosorptionKatarzyna ChojnackaThe paper presents the results of studies on kinetics and equilibrium of bioaccumulation process of Cr(III) ions by blue-green alga Spirulina sp. Bioaccumulation was described as the process that consists of two stages, passive (identical with biosorption) and active (accumulation inside the cells). The passive stage (similarly as biosorption itself) was found to be quick process and the subsequent active … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,702 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsBiosorption of Cr(III) by Microalgae and Macroalgae: Equilibrium of the ProcessIzabela Michalak, Agnieszka Zielinska, Katarzyna Chojnacka, Jan MatulaEquilibrium experiments of chromium(III) biosorption by microalga (Spirulina sp.) and macroalga (Pithophora varia) were investigated in this paper. Influence of the following process parameters was studied: pH, biomass concentration and temperature. The equilibrium of the process was described with Langmuir equation. The model parameters were determined at various process conditions. The best operation conditions for the process were selected: pH … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 8,204 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEvaluation of Nutrient Composition in Feed Supplements Used by Communal Beef Farmers During the Dry Season in Ga-Matlala, Limpopo ProvinceThapelo Rosina Monkwe, Masibonge Gxasheka, Busisiwe GunyaThis study assessed the nutrient composition of feed supplements commonly used by communal beef cattle farmers during the dry season in Limpopo Province of South Africa. A total of seven feed supplements, such as lucerne hay, maize stover, salt licks, calf grower, calf milk replacer, cattle feed pellets, and soybean meal, were sampled and analysed for proximate composition and mineral … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 16 Mar 2026 · 1,651 accessesView PDF Cite

Research ArticleOpen accessIn the abstractBiofortification of Food with MicroelementsKatarzyna Chojnacka, Marcin Mikulewicz, Jerzy CieplikProblem statement: Recently a particular attention was paid to the issue of microelement hunger, also termed hidden hunger. The problem was of global significance, since was related with the public health and concerns over 2 billion people. Approach: The study discusses the state of the art in the research on food biofortification as the sustainable solution to cope with micronutrient … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 28 Dec 2011 · 8,035 accessesView PDF Cite