2022-2023 FREE biochemistry project topics pdf & doc in Nigeria: Diploma, ND, HND, degree for undergraduates download | projects | projectslib.com

2022-2023 FREE biochemistry project topics pdf & doc in Nigeria: Diploma, ND, HND, degree for undergraduates download | projects | projectslib.com | simple Diploma, ND, HND, degree, MSC, PG, PHD, MLT biochemistry department project topics ideas for high school, universities, polytechnics & college of education students | undergraduate biochemistry students research final year project topics | plant, medical, food, clinical biochemistry project topics | best biochemistry project work research ideas examples with abstract, Chapters 1-5 & references

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  • INCIDENCE OF CANDIDA ALBICANS AMONGST PREGNANT AND NON-PREGNANT WOMEN IN OWERRI METROPOLIS

    ABSTRACT

    This research is on Incidence of candida albicans amongst pregnant and non-pregnant women in Owerri metropolis. A study on the incidence of Candida albicans was carried out on pregnant and non-pregnant women at the Federal Medical Centre and general Hospital Owerri. High vaginal swabs were used for the study. A total of 120 women were examined for Candida albicans; of which a total of 80 were pregnant women and the remaining 40 were non-pregnant women (used as control). The microbiological standard of identification of the organism was adopted. Of the 80 pregnant women examined for Candida albicans, 68 were infected, which represents an incidence of 85.0%. Of the 40 non pregnant women (control) examined, 16 were infected, which represents an incidence rate of 40.0%. Greatest percentage of 58.8% and 56.2% were recorded in the age group of 18-28 respectively. The pregnant women had a higher incidence rate of 85.0%. The clinical symptoms noted amongst them were itching, irritation of the vulva and a white, cottage cheese-like vaginal discharge.

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  • FORMULATION AND SENSORY EVALUATION OF HERB TEA FROM MORINGA OLEIFERA, HIBISCUS SABDARIFFA AND CYMBOPOGON CITRATUS

    ABSTRACT

    This research is on Formulation and sensory evaluation of herb tea from moringa oleifera, hibiscus sabdariffa and cymbopogon citratus. The sensory appeal of tea, like all food products, is an important consideration in new product development. Tea in general and herb tea in particular, are gaining increasing consumer attention due to a growing awareness of health benefits derived from their consumption. Even though several underutilized plants exist with potential for processing into herb tea, research in product development of herb teas is limited.  The objectives of the study were (1) to conduct chemical analyses on three herbs – Cymbopogon citratus leaves, Hibiscus sabdariffa calyces and Moringa oleifera leaves – in order to assess their potential for food product development; (2) to conduct acceptance tests on herb tea prepared from formulations of the herbs; and (3) to generate descriptive vocabulary on the sensory properties of herb tea. The herbs were unblanched and solar-dried. Standard methods were used to measure proximate parameters, water soluble extractives (WSE), light petroleum extractives (LPE), pH, total polyphenolics content (TPC) and minerals (Ca, Fe, Cu and Zn). Fifty (50) untrained panelists conducted acceptance tests on infusions from nine formulations and one control, and a nine-member trained panel conducted descriptive tests on infusions from three selected blends. Results of chemical analysis revealed that Moringa, Roselle and Lemon grass had, respectively, TPC of 35.70 mg/g, 27.81 mg/g and 15.37 mg/g; WSE of 7.44%, 12.38% and 4.07%; LPE of 3.48%, 2.71% and 4.1%; pH of 5.47, 2.73 and 4.53.

    Mineral analyses revealed that Moringa, Roselle and Lemon grass had, respectively, Ca of 412.5 mg/100g, 294 mg/100g and Fe of 12.93 mg/100g; 24.26 mg/100g and 11.58 mg/100g. A total of seventeen (17) descriptors were generated, defined and referenced for herb tea comprising six (6) appearance, three (3) aroma, one (1) flavour, five (5) taste and two (2) mouthfeel descriptors. Herb tea brewed from product 532 (50% Moringa, 30% Roselle and 20% Lemon grass) was the most preferred in colour, flavour, astringency and overall sensory properties while the control (100% Moringa) brewed the least preferred herb tea in most of the sensory attributes. Product 532 was predominantly reddish in colour (12.56) while the control was yellowish (11.93). Product 532 had high mean scores for Turbidity (12.67), Herbal aroma (11.41), Citrus aroma (11.30), Sour taste (12.15) and Astringency (11.41) while the control had significantly low scores for most of these attributes (≤ 2.33). Herb tea from blend of Moringa, Roselle and Lemon grass was more appealing than herb tea from only Moringa.

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    DETERMINATION OF THE LEVELS OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) AND HEAVY METALS IN SOILS AND PLANT FOOD CULTIVARS FROM SOME OIL EXPLORATION COMMUNITIES OF BAYELSA STATE

    ABSTRACT

    This research is on DETERMINATION OF THE LEVELS OF POLYCYCLIC AROMATIC HYDROCARBONS (pahs) AND HEAVY METALS IN SOILS AND PLANT FOOD CULTIVARS FROM SOME OIL EXPLORATION COMMUNITIES OF BAYELSA STATE.. Soils and vegetation in three selected communities in Bayelsa state were investigated for presence of recalcitrant Polycyclic aromatic hydrocarbons PAHs and heavy metals in the soils and edible plant food cultivars Two of the communities, Angiama and Oporoma are crude oil impacted areas having had oil spillage accidents in 2010 and 2008 respectively while Yenagoa a non crude oil impacted area is used as control Physicochemical properties of soils from these study areas were investigated using standard methods, the polycyclic aromatic hydrocarbon PAHs in the soil and food cultivars were determined using Gas Chromatography Mass Spectrophotometer while heavy metals were analysed by Atomic Absorption Spectrophotometer The result of the investigation reveal that oil spillage degrades the soil as revealed by the significant reduction in pH , moisture content and bulk density of soils from Angiama and Oporoma communities compared with Yenagoa Soil from Angiama had the highest percentage organic carbon 440053 and total hydrocarbon 846401011mg/kg followed by Oporoma 213012 and 52000500mg/kg respectively and Yenagoa 130108 and 6220026mg/kg respectively The anion levels of soil nitrate NO3 2 and phosphate PO4 3 were significantly highest in soil residues from Yenagoa than in Angiama and Oporoma while the levels of exchangeable cations Ca2, Mg2, K,and Na were highest in Angiama than in Oporoma and Yenagoa soils The values were significantly different at plt;005This suggest that exchangeable cations accompany oil spill High molecular weight recalcitrant PAHs Benzoa pyrene, benzoa anthracene, BenzoK fluoranthene, Benzobfluoranthene were present in both Angiama and Oporoma soil but were not detected in Yenagoa Except for phenanthrene, low molecular weight PAHs were not detected in soil samples from Yenagoa, occurred sparingly in Oporoma but were predominant in Angiama Food cultivars from both Angiama and Oporoma were equally proportionately contaminated with these high molecular weight PAHs The leafy vegetables pumpkin and scent leaf were far more contaminated than the tubers yam and cassava Heavy metal contaminants of soils and food cultivars mirror exactly the same trend associated with recalcitrant PAHs These results reveal that oil spillage activity is responsible for the preponderance of PAHs and heavy metals in the soils of the Niger Delta It also demonstrates that by the process of natural weathering polluted soils are remedied over time Given the appreciable accumulation of these crude fraction toxicants in food cultivars, it is suggested that the foods remain a major endogenous source of PAHs and heavy metals among the people of the area

     

     

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