Phenotypic and genotypic characteristics of cowpea rhizobia from soils of Ethiopia
October 2018
Phenotypic and genotypic characteristics of cowpea rhizobia indigenous to soils of Ethiopia are unknown. Forty indigenous cowpea rhizobial isolates were collected from cowpea-growing areas of the country and were characterized for their growth and genetic properties. Based on their cultural characteristics, the isolates were categorized into fast (FG), slow (SG), and extraslow-growings (ESG). The FG, SG, and ESG...
Anti-diabetic and some haematological effects of aqueous and ethanol leaf extract of Eriosema psoraleoides in alloxan-induced diabetic Wistar rats
October 2018
This study investigates the anti-diabetic and some hematological effects of aqueous and ethanol leaf extracts of Eriosema psoraleoides in alloxan-induced diabetic Wistar rats. Forty-eight albino mice were used for the lethal dose (LD50) study, while twenty-eight Wistar rats were used for the diabetic and haematological study. The result of the phytochemical analysis shows some important phytochemicals that could confer...
Propolis as natural additive: A systematic review
October 2018
Propolis extract is a resin collected by the bees and contains numerous active substances with a recognized pharmaceutical potential use. The aim of this study was to conduct a systematic review of studies with the use of propolis as a food additive and the microencapsulation technology for incorporation of the product in food. Studies in Portuguese, English and Spanish were identified from online databases, Lilacs,...
Resveratrol inhibits cell viability and proliferation via apoptotic pathways in ovarian cancer
October 2018
Ovarian cancer is the most common female malignancy and the main cause of death from gynecological malignancies. Resveratrol (3,4,5 tri-hydroxystilbene) is a phytoalexin and a polyphenolic compound present in human dietary material such as peanuts, mulberries, grapes and red wine. We demonstrated that resveratrol depressed the proliferation of HO8910PM cells in a dose-dependent and time-dependent manner in vitro (P <...
Comparative survey of three processes used for the extraction of total phenol content and total flavonoid content of Anacardium occidentale L. and the assessment of its antioxidant activity
October 2018
Three processes were used for the extraction of total phenol and total flavonoid contents of Anacardium occidentale L. and to determine its antioxidant activity. Whatever the extraction process was, the total flavonoid and total phenol contents were of the same order. With the microwave-assisted extraction (MAE), 666.07 mg gallic acid equivalent (GAE)/100 g dry matter (DM) of total phenol content was obtained from the...
Genetic diversity of blackberry (Rubus subgenus Rubus Watson) in selected counties in Kenya using simple sequence repeats (SSRs) markers
September 2018
Genetic diversity of blackberry (Rubus subgenus Rubus Watson) is essential for efficient breeding and improvement of its pomological traits and yield. In this research, simple sequence repeats (SSRs) were used to determine the genetic diversity of 90 blackberry accessions collected from six different counties in Kenya. From 11 SSR markers used to genotype the blackberry accessions, a total of 127 alleles were generated....
The effect of different nutrient media on in vitro shoot and root proliferation of Vanilla planifolia Jacks. ex Andrews
September 2018
Murashige and Skoog (MS), Knudson C (KC) and Vacin and Went (VW) nutrient media are among the most widely used for micropropagation of orchid species. Therefore, this study was conducted to evaluate the effect of these growth media on in vitro shoot and root proliferation of Vanilla planifolia by using nodal segment as explants. Three different media; Murashige and Skoog (MS), Knudson C (KC) and Vacin and Went (VW) were...
Next-generation sequencing platforms for latest livestock reference genome assemblies
September 2018
Next-generation sequencing (NGS) or high-throughput sequencing platforms refers to different modern sequencing technologies that allow scientist to sequence millions to billions of reads (base pairs) in a single, much more quicker and cheaper cost than the previously used Sanger (first generation) sequencing method. Next-generation sequencing platforms classified as second generation sequencing platforms which require...
Trichoderma atroviride 102C1: A promising mutant strain for the production of a β-glucosidase, ï¢-xylosidase and ï¡-L-arabinofuranosidase activities using agroindustrial by-products
September 2018
Holocellulolytic accessory enzymes are very important in assisting hydrolysis of biomass. The use of these enzymes in the enzymatic hydrolysis of plant biomass is very important for obtaining building blocks in the concept of biorefinery. In previous studies, the mutant strain Trichoderma atroviride 102C1 was tested for production of endoglucanases, FPases and endoxylanases. This study aimed at evaluating the efficiency...
Phytochemical and proximate composition of cucumber (Cucumis sativus) fruit from Nsukka, Nigeria
September 2018
Cucumber (Cucumis sativus L.) is very common, cultivated throughout the world and often eaten as a raw vegetable without cooking. In this study, the phytochemical and proximate compositions of cucumber were investigated. Quantitative phytochemical analysis of the homogenate of C. sativus fruit showed that reducing sugars (574.36 ± 3.88 mg/g) was highest amount when compared to other phytochemicals, alkaloids...
Chromium (III) and its effects on soil microbial activities and phytoremediation potentials of Arachis hypogea and Vigna unguiculata
September 2018
The aim of this research was to evaluate the impact of chromium (III) nitrate on soil microbial activities and growth performance and phytoremediation potentials of two staple leguminous crops, namely cowpea (Vigna unguiculata) and groundnut (Arachis hypogea). Pristine sandy loam soil samples were polluted with nitrate salts of chromium (III) at four different levels (50, 100, 200 and 400 mg/kg) in triplicates. There...
Characterization of fluorescent Pseudomonas from Oryza sativa L. rhizosphere with antagonistic activity against Pyricularia oryzae (SACC.)
September 2018
The aim of this work was to select and characterize native Cuban fluorescent Pseudomonas from the rhizosphere of Oryza sativa with in vitro and in vivo antagonistic activity against Pyricularia oryzae. A total of 200 isolates were recovered with the typical growth and cultural characteristics of fluorescent Pseudomonas. The results showed that 12.5% of total isolates were capable of inhibiting mycelial growth, with...
Anti-inflammatory and antioxidant potentiality of Solanum xanthocarpum
September 2018
Inflammation is the body’s immune response to combat suspected harmful effect by a stimulus. Antioxidants prevent chain of reaction that would result in the production of free radicals. Prolonged usage of steroids as anti-inflammatory agents is unsafe, demanding search for anti-inflammatory compounds with sustainable future. In this study, seeds and leaves of Solanum xanthocarpum were explored in vitro for their...
The technological influence of the different methods of extraction on the initial concentration of thymol in the essential oil of thyme (Thymus satureioides)
September 2018
The present study deals with the influence of the technological factor in relation to the technique used for the extraction of essential oil of thyme, its chemical composition, and in particular, the concentration of thymol as the principal chemo-typical active substance of this variety of thyme from the Moroccan High Atlas. The working protocol includes the extraction of the essential oil by three different methods...
Heterozygote polymorphisms of ARG16GLY and GLN27GLU ADRB2 gene is risk protective for obesity in Javanese population of Indonesia
September 2018
The relationship between obesity and insulin resistance is influenced by various factors, including genetics. ADRB2 gene polymorphisms of Arg16Gly and Gln27Glu showed inconsistent results toward obesity and insulin resistance in some populations. This study aimed to investigate the frequency of the genetic polymorphisms of Arg16Gly and Gln27Glu of the ADRB2 gene and to analyze risk factors for obesity and insulin...
Identification and evaluation of secondary metabolites by gas chromatography-mass spectrometry (GC-MS) in native strains of Trichoderma species
September 2018
Trichoderma species is a heterotrophic saprobion organism, which competes with other microorganisms, preventing them from developing. This fungus has mechanisms of action, among which are: production of antibiotics and metabolites, and hyperparasitism, which also promotes the induction of systemic resistance in plants. In this study, five native Trichoderma strains which were collected from agricultural land in...
Genetic diversity of seed storage protein in the Ethiopian garden cress (Lepidium sativum L.)
September 2018
The Ethiopian garden cress (Lepidium sativum L.) is an important crop extensively used as food and medicine. In this study, total seed storage proteins of 112 garden cress genotypes collected from diverse growing regions in Ethiopia were investigated to assess patterns of genetic diversity and relationships. Using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), a total of 1774 stable protein bands...
Variation of concentrations of thymol and carvacrol in the essential oil of thymus satureoides during aging
September 2018
The aim of this work is to do a stability study of two chemo-typical active ingredients (thymol and carvacrol) of the essential oil of thyme “Thymus satureoides” collected from Azilal Region, Morocco. Specimen identification was performed for the raw obtained plant materials and the essential oil extraction carried out through initial and final chemical characterization of the essential oil - at t = 0...
Reduction of organic load from palm oil mill effluent (POME) using selected fungal strains isolated from POME dump sites
September 2018
Environmental concerns are becoming important global tasks. Palm oil mill effluent (POME) contains oil and grease and also rich in organic matter in the form of total suspended solids which can increase biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of POME. It is generated in huge quantities during the production of crude palm oil and pollutes land, water and atmosphere if left untreated. The current...
Antioxidant activity of essential oil of three cultivars of Amomum subulatum and standardization of high performance thin layer chromatography (HPTLC) method for the estimation of 1,8-cineole
September 2018
Essential oils of the fruits of three cultivars of Amomum subulatum (Family-Zingiberaceae), such as varlangy, seremna and sawney were isolated. Antioxidant potential was determined using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) scavenging and FeCl3-reducing models and the presence of 1,8-Cineole was quantified using the developed high performance thin...
Genetic diversity in Radix species from the middle and south of Iraq based on simple sequence repeats
September 2018
Ten newly developed microsatellite loci were isolated from an AG20 and CAG20 enriched genomic DNA library of Radix sp. from Iraq. The simple sequence repeats (SSR) comprised 76.0% di-, 20.0% tri- and 4.0% tetra-nucleotide repeats. The number of alleles for all 10 loci ranged from 4 to 18, with a mean of 11.3 alleles per locus. The observed (Ho) and expected heterozygosity (He) values varied from 0.286 to 0.8670.927...
Evaluation of the effects of plant aqueous extracts as anti-diabetic agents on alloxan induced diabetic male rabbits
September 2018
This study investigates the effect of barley (Hordeum vulgare), black plum (Syzygium cumini) and Chinese tree leaves (Pistacia chinesis) aqueous extracts on serum glucose, cholesterol, urea, uric acid level and body weight of normal and alloxan-induced diabetic male rabbits. Rabbits were kept in fasting condition for 12 h, then diabetes was induced using alloxan monohydrate (150 mg/Kg) . From the 7th day of...
Preservative potentials of essential oils of three Nigerian spices in mixed fruit juice and their antioxidant capacity
August 2018
The study was conducted to evaluate the preservative potentials of essential oils (EOs) of Piper guineense, Xylopica aethiopica and Tetrapleura tetraptera in mixed fruit juice and determine their antioxidant capacity. The preservative effect at varying concentrations was evaluated using S. cerevisiae, S. aureus and B. cereus as test isolates. The antioxidant properties were determined using 1,1-...
Detection of genetically modified DNA in processed maize and soybean products in Nigeria
August 2018
Cultivation and commercial utilization of genetically modified (GM) crops has significantly increased in many parts of the world and particularly in developing countries where food security is a challenge. Despite stringent regulations requiring that food made from GM foods should be properly labelled, evidence of unlabelled foods made from GM crops sold in local markets in many of these countries is increasing. This...
Isolation and regeneration of protoplasts from leaf explants of Rhyncholaelia digbyana
August 2018
A protocol for the isolation and regeneration of protoplasts from leaf explant of Rhyncholaelia digbyana is presented. The protoplasts were isolated using hemicellulase enzymes at 1.5, 2.25, and 3% (w/v), pectinase at 0.5 and 0.75% (w/v) and cellulase at 1 and 2% (w/v). Protoplast counting was carried out with a Neubauer camera and an optical microscope at 40X, and viability was determined with Evans blue dye at 0.025%...
Simple and rapid detached leaf technique for screening common beans (Phaseolus vulgarise L.) in vitro against angular leaf spot (Pseudocercospora griseola) disease
August 2018
A rapid and reliable detached-leaf technique was developed for screening common bean (Phaseolus vulgaris) genotypes against angular leaf spot (ALS) disease caused by Pseudocercospora griseola. It is helpful to differentiate between susceptible and resistance common bean genotypes. Detached leaves of common bean tested genotypes were inoculated by immersing them into a spore suspension followed by placing into petri...
Genetic diversity among elite chickpea (Cicer arietinum L.) varieties of Ethiopia based on inter simple sequence repeat markers
August 2018
The inter simple sequence repeat (ISSR) marker was used in this study for genetic fingerprinting and identification of released chickpea varieties and for the determination of the genetic relationships among these cultivars. A total of 19 released chickpea varieties were subjected to ISSR analysis with the objective of evaluating the genetic diversity among the cultivars. A total of 20 ISSR primers were initially...
Camwood (Baphia nitida) alcoholic extract: A suitable counter stain for haematoxylin in the demonstration of liver and kidney histomorphology
August 2018
The counter staining ability of Camwood (Baphia nitida) alcoholic extract and its electrostatic compatibility with haematoxylin was determined. One gram of locally sourced red paste was subjected to simple extraction in 100 ml of 70 and 95% alcohol, respectively. Primary staining of buffered formalin fixed, paraffin embedded liver and kidney tissues was done with haematoxylin followed by counter staining with extract...
Effect of spices on the microbiological quality of Hibiscus sabdariffa (zobo) drink and molecular characterization of the associated spoilage organisms
August 2018
Hibiscus sabdariffa drink (zobo) was preserved with three concentrations of cloves (Syzygium aromaticum), ginger (Zingiber officinale) and mixture of cloves and ginger, respectively while the control had no spice. The bottled H. sabdariffa drink was stored at 28 ± 2°C for 16 days. The total bacteria and fungi counts were determined every 48 h during storage. Bacterial and fungal growths were not detected in...
Development and validation of a high performance liquid chromatography-diode array detection (HPLC-DAD) method for the quantification of rutin and isoquercetin in Morus nigra L. (Moraceae)
August 2018
Morus nigra L. is widely used by the population of the São Francisco Valley (Brazil) for the treatment of several diseases such as hypertension, diabetes, arthritis etc. The objective of this study was to develop and validate an analytical method that is capable of identifing and quantifing flavonoids in the ethanolic crude extract (Mn-EtOH) and its ethyl acetate phase (Mn-AcOEt) obtained from M. nigra leaves...
Isolation and identification of bacterial endophytes from Crinum macowanii Baker
August 2018
The widespread distribution of Crinum macowanii across the African continent has entrenched the plant’s medicinal usage in treating diverse diseases. While its phytochemistry is well established, its microbial symbionts and their utility have not been described. As such, five bacterial endophytes, viz. Staphylococcus species C2, Staphylococcus species C3, Bacillus species C4, Acinetobacter species C5 and...
Co-expressing house fly cytochrome P450 6A1 and human cytochrome P450 reductase in Escherichia coli to bioconvert insecticide aldrin
August 2018
Aldrin used in agricultural as well as industrial or home pest control is known to be a persistent organic pollutant, having chronic adverse effects on wildlife and humans. The degradation of aldrin has drawn a lot of attentions. In this study, house fly cytochrome P450 6A1 (CYP 6A1) or both house fly cytochrome P450 6A1 and human NADPH-P450 reductase (CPR) together was expressed in Escherichia coli cells to study their...
Effect of sample extraction, preparation methods on HPLC quantification of plumbagin in in vivo and in vitro plant parts of Plumbago zeylanica L.
August 2018
Plumbagin is an important therapeutic compound of Plumbago zeylanica L., the commercial demand of this compound warrants optimizing a suitable method to isolate plumbagin in large scale. The present study was undertaken to obtain the maximum recovery of plumbagin content by employing different extraction methods viz., ultra-assisted extraction (UAE), maceration extraction (ME), soxhlet extraction (SE), serial soxhlet...
Biomanagement of Rose and carnation wastes in flower industries with three epigeic earthworm species: Eisenia fetida, Eisenia andrie and Dendrobanae veneta
August 2018
The horticulture sector in Ethiopia is being challenged by multifaceted hitches, among which managing excess wastes produced from the farms and minimizing the cost of inorganic fertilizers are the major ones. The performance of three epigeic earthworm species, Eisenia fetida, Eisenia andrie and Dendrobanae veneta, in managing flower (Rose and Carnation) wastes through vermicomposting was evaluated. The study was done...
In vitro regeneration of Neocarya macrophylla (Sabine) Prance, wild fruit of Niger
August 2018
Neocarya macrophylla is a spontaneous fruit species that constitutes the dominant population of Dallol Bosso in Southwestern Niger. In order to test the in vitro regeneration ability of this species, micro-propagation was applied to micro-cuttings from young almond seedlings. The Murashige and Skoog basal medium was enriched with several concentrations of naphthaleneacetic...
Comparative analysis of the chemical compositions of indigenous watermelon (Citrullus lanatus) seeds from two districts in Limpopo Province, South Africa
August 2018
Seeds from different indigenous watermelons were analysed for their chemical composition such as phenolics, proteins, oils, minerals, ash and fibre content as well as antioxidant activity measured in methanol extract using 2.2-diphenyl-1-picrylhydrazyl (DPPH) assay. The morphological variations of watermelons, which revealed diversity in terms of fruit and seed colour were also assessed. Average percentages for lipid...
Circular RNA expression profiles of peripheral blood mononuclear cells in rheumatoid arthritis patients
August 2018
Rheumatoid arthritis (RA) is a systemic, chronic autoimmune disease involving synovial inflammation and joint destruction. Lack of knowledge on RA pathogenesis hinders development of effective treatments. The aim of this study was to examine whether circular RNAs (circRNAs), which are involved in the development of other diseases, may also play a role in RA. Expression profiles of circRNAs were compared between...
Evaluation and comparison of staining effect of Punica granatum flower extract on testis and ovary of Wistar rats: First results
August 2018
The evaluation and comparison of the staining effect of pomegranate (Punica granatum) flower extract (dye solution) on histological sections of rat testis and ovary provides a simple, quick technique for the visualisation of both cells. In the developed procedure, this work shows the staining effect of P. granatum flower extract used at different pH of dye bath and temperatures on the histological sections of rat testis...
Nuclear isolation and purification using SDS/urea (NIPSU) method for efficient and rapid extraction of high-purity genomic DNAs from Jatropha curcas L: A comparative analysis of DNA isolation protocols
August 2018
Jatropha curcas L. (Jatropha) has gained popularity for its potential use in biodiesel production in arid regions, and its yield improvement by molecular breeding has been anticipated. However, Jatropha is known for its recalcitrance in the extraction of pure genomic DNAs. In this study, four DNA extraction methods were comparatively examined for their efficiency and quality of genomic DNA isolations from Jatropha....
Genetic variability, heritability and expected genetic advance of yield and yield related traits in common bean genotypes (Phaseolus vulgaris L.) at Abaya and Yabello, Southern Ethiopia
August 2018
This experiment was conducted to evaluate 36 common bean genotypes including seven released varieties to generate information on the extent of genetic variability, heritability and expected genetic advance of yield and yield related traits. The field experiment was conducted in 2015 at two locations (Abaya and Yabello) and genotypes were planted in triple lattice design. Data were collected on yield and important...
Technological properties and sugar tolerance performance of palm wine yeasts isolated from parts of Nsukka, Nigeria
August 2018
The ability of yeasts to survive and produce significant ethanol in high sugar medium and high ethanol environment is essential for the use of such yeasts in industrial and edible ethanol production. Four Saccharomyces spp. strains () isolated from palm wine and an industrial strain were studied in high glucose medium for ethanol production and ability to survive in high sugar medium. Saccharomyces cerevisiae...
In vitro inhibitory potentials of aqueous and ethanol extracts of Hyptis suaveolens on fungi associated with postharvest spoilage of Brassica oleracea
August 2018
The inhibitory potential of Hyptis suaveolens leaf and root extracts on fungi associated with postharvest spoilage of cabbage (Brassica oleracea var. capitata) was examined. Collection of diseased cabbage was done in sterile sample bags . Isolation of fungi was carried out by inoculating small sections of diseased tissues excised from the cabbages unto Petri-dishes containing Acidified Potato Dextrose Agar (APDA)....
Application of molecular and biotechnological techniques in plant disease management: A review
August 2018
Plant diseases are a major challenge in crop production. They are caused by nematodes, bacteria, fungi, viruses as well as plant nutritional factors. Diseases interfere with the normal physiological and metabolic processes of plants. This results in various effects including wilting, stunting, yellowing and death of plant tissues and organs. Crop losses due to diseases manifest in form of reduced yield, poor quality...
Biosurfactant production by Bacillus subtilis UFPEDA 86 using papaya (Carica papaya L.) waste as substrate: Viability studies and pH influence of the culture medium
July 2018
Biosurfactants are surface-active compounds derived from microorganisms and offer several advantages over chemical surfactants, such as low toxicity, good biodegradability and ecological acceptability. Even though interest in biosurfactants is increasing, these bioproducts do not compete economically with synthetic surfactants due to the overall costs of the bioprocess. The use of inexpensive raw materials is an...
Evaluation of Curcuma zerumbet (Zingibaraceae) rhizome extracts sub-acute toxicity on Wistar rats
July 2018
Plant extracts have been lately used by the population to treat various types of diseases, and this has been notably encouraged by the World Health Organization (WHO). Curcuma zerumbet (Zingiberaceae) belonging to the family of the Zingiberaceae, is herbaceous, perennial and, utilized by the population to treat gastric disorders. However, data on the subacute toxicity of this species are scarce in the literature....
Biotransformation of the residual liquid from the wet coffee benefit by Kluyveromyces marxianus
July 2018
The search for biotechnological alternatives for the use of residuals generated in the agro-industrial processing of coffee is a current problem. This study evaluated the biotransformation of the liquid residual of the humid coffee benefit using the yeast Kluyveromyces marxianus CCEBI 2011. It was demonstrated that this strain is able to effectively use the reducing and neutral sugars in 24 h, for a yield of 40% in the...
Assessment of morphological characteristics among upland rice (Oryza sativa and Oryza glaberrima) germplasm
July 2018
Rice is an important staple food crop that feeds over half of the global population and has become the cereal that provides a major source of calories for the urban and rural poor in Africa. This work aimed to evaluate the morphological of rice (Oryza sativa and Oryza glaberrima) germplasm. In the present study, 14 quantitative traits were used across 48 accessions or genotypes obtained from Central Agricultural...
Rapid and efficient plant regeneration from shoot apical meristems of finger millet [Eleusine coracana (L.) Gaertn.] via direct organogenesis
July 2018
A simple and efficient plant regeneration system via direct organogenesis was established in finger millet using in vitro derived shoot apical meristems. Six varieties; GBK-043128, GBK-043094, GBK-043050, GBK-043137, GBK-043122 and GBK-043124 were evaluated. MS medium was used for cotyledonary germination. Maximum number of shoots (84.33%) was observed in variety GBK-043128 while GBK-043094 had the least germination...
Effects of aqueous seed extracts of Mucuna sloanei (Fabaceae) on body weight and some biochemical parameters of Rattus novergicus
July 2018
Mucuna sloanei is an annual leguminous plant widely used among the various ethnic groups in Nigeria. The effects of aqueous M. sloanei seed extract on the body weight and some biochemical parameters of 48 normal male Rattus novergicus (albino rats) were investigated for 28 days. The rats were divided into control group (A) which received distilled water and treatment groups (B, C and D) that received oral administration...
Potential evaluation of Saccharomyces cerevisiae strains from alcoholic fermentation of mango pulp
July 2018
The fermentation characteristics of different strains of Saccharomyces cerevisiae isolated from sugar cane musts for the production of cachaça (Brazilian sugar cane spirit) and from beer musts were analyzed based on the kinetic parameters of alcoholic fermentation in mango pulp. The commercial pressed baker’s yeast was used as a standard inoculum. The results show that the yeast strains tested from sugar...
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