Abbreviation: Afr. J. Biochem. Res.
Start Year: 2007
Page 1 of 18, showing 20 records out of 351 total, starting on record 1, ending on 20
DOI: 10.5897/AJBR2015.0862[Article Number: 23BD8B461518]
In this study, the extraction conditions of polysaccharides of Artemisia mongolia (PAM) were optimized and their molecular weight, weight distribution, composition and antioxidant activities of the polysaccharides investigated. The degree of polymerization of fructan-oligosaccharides 2-8 was separated by thin layer chromatography (TLC) with good results. Polysaccharides were extracted from the leaves of A. mongolia and... Read more.
DOI: 10.5897/AJBR2016.0908[Article Number: 840F5F261818]
The present study was carried out during 2012 and 2013 seasons to study the effect of pre-harvest foliar application of chitosan (a natural beta-1-4-linked glucosamine polymer) at two concentrations 250 and 500 ppm on vegetative tree growth, fruit yield and quality as well as leaves chemical composition of Washington navel orange trees grown under two locations. As for growth parameters (shoot length, leaves... Read more.
DOI: 10.5897/AJBR2016.0899[Article Number: 423333761366]
Selected grain extracts were assayed against digestive proteases of Anoplocnemis curvipes, Clavigralla tomentosicollis and Mirperus jaculus with a view to identifying suitable sources of protease inhibitors against the cowpea pests. Laboratory bioassays showed that grains of a local soybean variety Kìshí and a cowpea landrace NG/SA/07/0098 contain potent inhibitors although the former produced a... Read more.
DOI: 10.5897/AJBR2016.0890[Article Number: 3FDBB7760578]
The study evaluated the nephroprotective potentials of methanolic extract (ME) and dichloromethane fraction (DCMF) of root-bark of Garcinia kola on gentamicin-induced nephrotoxicity in rats with a view to utilize the extracts of the root of G. Kola in the amelioration of antibiotic-induced kidney damage. The study involved preparation of the extract, fractionation, phytochemical screening and evaluation of phenolics and... Read more.
DOI: 10.5897/AJBR2016.0884[Article Number: BAF517F58956]
Oil palm calyx is a solid waste in the oil palm industry which is yet to find economic usage. This study aimed to determine the feasibility of recovering phospholipids from the oil palm calyx. Preliminary functional property of calyx phospholipids was determined using emulsion stability. Results indicated that oil palm calyx had 14% total lipids when extracted with methanol and 62.3% of lipids were acetone insoluble... Read more.
DOI: 10.5897/AJBR2015.0866[Article Number: E3A230158333]
Hyperlipidaemia is a usual and life threatening complication of diabetes mellitus. Consequently, a good anti-diabetic agent should reduce the progression of this complication. In view of this, the anti-hyperlipidaemic and anti-atherogenic activities of aqueous extract of Lasianthera africana was studied in streptozotocin induced diabetic rats. Extract treatment was administered at a dose of 1ml of 180 mg/ml of extract... Read more.
DOI: 10.5897/AJBR2015.0854[Article Number: 311921B57709]
This study was conducted to determine the total phenol content (TPC) and free radicals scavenging activity of methanolic and ethanolic extracts of wheat (WH-711) fractions (grain, bran and flour) fermented with Aspergillus oryzae (MTCC 3107). Maximum TPC (1469.35 ± 4.5, 1426.44 ± 5.5 and 1268.91 ± 5.3) was obtained in methanolic extracts as compared to ethanolic extracts (1368.65 ± 3.5,... Read more.
DOI: 10.5897/AJBR2015.0830[Article Number: E8B891356840]
The effect of varying NaCl concentrations on membrane lipids of Escherichia coli and Staphylococcus aureus cultivated at 37°C was studied. Lipid profiles of the membrane extracts were resolved by thin layer chromatography (TLC) using polar and neutral lipids solvent systems, with their fatty acid constituents determined via gas chromatography-mass spectrometry (GC-MS). Polar lipids identified were cardiolipin,... Read more.
DOI: 10.5897/AJBR2015.0839[Article Number: 45AAE4A56842]
This study investigated changes in cholesterol levels and haematological parameters of rats subjected to diets supplemented with kidney bean seeds. The seeds were processed in three parts; the first part was milled raw; the second part was boiled, dried and milled; third part was germinated, dried and milled. The kidney bean seed flour was incorporated into the diet of different groups of rats at 10% inclusion. Thirty... Read more.
DOI: 10.5897/AJBR2015. 0860[Article Number: D1F910656032]
In order to develop a new type of alcoholic beverage with antioxidant activity, the authors carried out this research. In this study, alcoholic beverages were made from unpolished black rice, unpolished red rice, unpolished green rice, polished white rice and unpolished wild rice using conventional cooked fermentation and economical uncooked fermentation system. The resulting alcoholic beverages made from cooked and... Read more.
DOI: 10.5897/AJBR2015.0846[Article Number: 1D51E7155664]
A simple procedure of extraction, fractionation and assessment of organoleptic and antioxidant properties of Aframomum sceptrum seeds was carried out, and the results were compared with a currently used synthetic antioxidant, butylated hydroxy toluene (BHT). Extraction was carried out using Soxhlet extractor and fractionation of the ethanolic extract was accomplished using vacuum liquid chromatography (VLC). Various... Read more.
DOI: 10.5897/AJBR2015.0865[Article Number: 11ECE7955667]
Popular Nigerian vegetables namely, cabbage, spinach, bitter leaf, water leaf, ewedu, roselle and lettuce obtained from Sokoto metropolis, Nigeria were analysed for nitrate contents by ultra-violet (UV)-spectrophotometric method. The fresh leaves of the samples were chopped and ground using mortar and pestle for the analysis. Absorbance of each sample was obtained in three replicate and the calibration graph of... Read more.
DOI: 10.5897/AJBR2015.0841[Article Number: 7A37D9655441]
Peels of sweet potato (Ipomoea batatas) were buried in the soil for 14 days and the isolates associated with the degradation of the peels were obtained using standard microbiological procedures. The bacterial isolates obtained were screened for amylolytic and cellulolytic activities under different pH and temperatures as parameters and optimized for enzyme production. Sixteen (16) bacterial isolates were obtained and... Read more.
DOI: 10.5897/AJBR2015.0856[Article Number: 9F8FCBA55445]
The effects of ethanolic extracts of five different citrus peels on mean body and liver weight and serum lipid content were investigated in albino rats. Six groups (n=8 each) were fed with a high fat diet for seven days ad libitum before oral daily administration of the peel extracts of orange (OR), lemon (LE), lime (LI), tangerine (TA), grapefruit (GR) and synergistic combination of equal ratios (w/w), that is, (SY),... Read more.
DOI: 10.5897/AJBR2015.0837[Article Number: F90783054978]
Heat shock proteins play a critical role in the development of thermotolerance and protection from cellular damage associated with heat stresses. The study was undertaken to investigate the association of single nucleotide polymorphisms (SNPs) of Hsp90ab1 gene with thermo-physiological parameters viz, respiration rate (RR), rectal temperature (RT), heat tolerance coefficient (HTC) and total milk yield in Sahiwal cows.... Read more.
DOI: 10.5897/AJBR2015.0847[Article Number: 9B18A7654708]
Tiger nut (Cyperus esculentus) was subjected to different fermentation methods such as traditional, back slope and control. The raw and fermented samples were analyzed for mineral, amino and fatty acids. The results of mineral analysis revealed potassium and sodium as the most abundant mineral element with their value ranging from 546 to 91.6 mg/100 g and 64.00 to 3383.33 mg/100 g, respectively while copper was found in... Read more.
DOI: 10.5897/AJBR2014.0771[Article Number: 4BF2BC154710]
Anemia constitutes a serious health problem in many tropical countries including Nigeria because of the prevalence of malaria and other parasitic infections which possibly leads to decrease of hemoglobin. Fluted pumpkin has been reported to be very good in building the constituents of the blood and also replacing them. This study was designed to investigate the effects of the aqueous leaf extract of fluted pumpkin on... Read more.
DOI: 10.5897/AJBR2015.0848[Article Number: 5093F2454542]
This study sought to understand the importance of variation of steeping and germination conditions (temperature, pH and salts) on the quality of African finger millet malt in terms of diastic power (a-amylase and β-amylase), endo- (1,3) (1,4)-β-D-glucanase, b-glycan content and protein profile. The results show that the physiological responses of African finger millet malted seeds are correlated to pH (acidity... Read more.
DOI: 10.5897/AJBR2015.0818[Article Number: 096C0E153414]
Lipases hydrolyze lipids to yield fatty acids and glycerol which are used as raw materials in industries. The lipase from raphia mesocarp was extracted, purified and characterized. Assay was carried out using p- nitrophenyl palmitate as substrate. The lipase was subjected to 80% ammonium sulphate precipitation, purified on ion exchange and gel filtration chromatography. Native and subunit molecular weights were... Read more.
DOI: 10.5897/AJBR2015.0826[Article Number: 19B123A52590]
Lead (Pb) is one of the toxic metals and is commonly used in industries. It affects multiple systems and has role in the production of reactive oxygen species (ROS). The objective of the present study was to determine Pb levels and to detect DNA damage in traffic wardens of Lahore, Pakistan. A total of 90 subjects were selected including 60 traffic wardens working in field and 30 working in administrative zones. The... Read more.
Page 1 of 18, showing 20 records out of 351 total, starting on record 1, ending on 20