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    Tytuł:
    Extraction of Nigerian Beef Tallow by Wet Rendering Process and its Characterization
    Autorzy:
    Chizoo, Chizoo
    Ume, Cyril Sunday
    Esonye, Marcel Chimankpam
    Okafor, Vincent Nwoye
    Ofoefule, Akuzuo Uwaoma
    Powiązania:
    https://bibliotekanauki.pl/articles/1113574.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Beef Tallow
    Gas Chrromatography
    Physico-Chemical parameter
    Slaughterhouse
    wet rendering
    Opis:
    Nigeria has relied for several decades on the importation of tallow fat for her industries despite its inconsistency in availability and price in the market The above challenges and the recent soaring value of Dollars to Naira have made it highly necessary for Nigeria to consider the quantum of about 9 tonnes/day of tallow fat sent down the drain in each Nigerian slaughterhouse. Therefore, this research work has investigated the Physico-chemical quality of Nigerian beef tallow fat obtained by wet rendering of slaughterhouse waste from Obosi in Anambra State of Nigeria. It was analyzed using AOAC procedures (1990, 1993). The slaughter waste gave 15% yield of tallow fat with 199.5 mg/gkOH, 0.40%, 2.05% of saponification value, unsaponifable matter and Free Fatty Acid (FFA), respectively. The Gas Chromatography (GC) revealed the following fatty acids: 46.65% stearic acid, followed by 41.33% palmitic acid and 9.0% oleic acid. The results were found to be agreement with ISO and CODEX-STAN 211(1999) standards. To this end, the quality and usefulness of Nigerian beef tallow has been validated. Hence, investment in this area would help reposition Nigerian slaughterhouse waste matter control strategy, economy and industry.
    Źródło:
    World News of Natural Sciences; 2017, 15; 129-138
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytoplankton Diversity and Abundance in Relation to Physico-chemical Parameters of Ifewara Reservoir, Southwestern Nigeria
    Autorzy:
    Hameed, I. O.
    Adeniyi, I. F.
    Adesakin, T. A.
    Aduwo, A. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076734.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Phytoplankton abundance
    distribution
    diversity
    physico-chemical parameter
    Opis:
    The phytoplankton abundance and physico-chemical parameters of Ifewara Reservoir, Southwestern Nigeria was studied for four months (February to December, 2015). Four sampling stations (designated Stations 1-4) were established along the horizontal axis of the reservoir - from inflow region to the dam site end. At each station, net plankton samples were collected by sieving 30 litres of water through a plankton net of 50 µm mesh size into 30 ml concentrate volume. These were then preserved in 5% formalin solution and later treated with Lugol’s solution and reduced to 3 ml for microscope observation. The results of the physico-chemical parameters showed that some were above recommended limits of the National Environmental Standards and Regulations Enforcement Agencies (NESREA) for drinking water and aquatic life. Sixty-nine (69) species of phytoplankton were recorded from the four investigated sampling stations. The abundance of phytoplankton was in the following order; Bacillariophyceae (90.84%) > Chlorophyceae (44.67%) > Cyanophyceae (10.69%) > Charophyceae (0.31%) > Euglenophyceae (0.12%) > Dinophyceae (0.06%) > Chrysophyceae (0.03%). The most abundant phytoplankton species was Fragilaria aceania, accounting for 74.28% of the total, followed by Cosmarium quadrum (13.04%), Rhizoclonium hieroglyphicum (11.97%) and Oscillatoria tenuis (8.03%). With regard to the horizontal pattern of variation along the reservoir, the highest phytoplankton abundance was recorded at the inflow basin and the lowest abundance at the dam site. Almost all the phytoplankton groups also had their highest mean abundance during the rainy season rather then during the dry season.
    Źródło:
    World News of Natural Sciences; 2019, 24; 250-267
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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