May 2016
Leaf anatomy of Crambe abyssinica Hochst. during in vitro shoot induction
This study aimed to characterize and evaluate possible modifications in the leaf anatomy of crambe during the process of shoot induction based on micropropagation protocol. The anatomic characteristics of the leaves, and also the morphological characteristics of crambe plantlets, were evaluated during the shoot induction phase of the micropropagation. The shoots were induced by the cytokinins, 6-benzylaminopurine (BAP),...
May 2016
Characterization of biochemical behavior of sorghum (Sorghum bicolor [Moench.]) under saline stress conditions using multivariate analysis
The aim of this research was to characterize the biochemical behavior of sorghum plants under saline stress using multivariate statistical analysis methods for efficient management of Sorghum bicolor [Moench.]). The experimental design was completely randomized design composed of three saline concentrations (0, 1.5 and 2.0 M) in 10 replications. In the multivariate analysis (hierarchical method), there were distinct and...
May 2016
Short-term phyto-toxicity consequences of a non-selective herbicide glyphosate (Roundup™) on the growth of onions (Allium cepa Linn.)
This study examined the phyto-toxic effects of a commonly named non-selective herbicide glyphosate (Roundup™) on onions (Allium cepa Linn.). The study was necessitated due to the indiscriminate use and release of Roundup™ for weed control in the Niger Delta soils of Nigeria. The Organisation for Economic Co-operation and Development (OECD) standard protocol # 208 was adopted. The short-term phyto-toxic...
May 2016
Morphological and molecular genetic diversity of Syrian indigenous goat populations
Domestic goats in Syria may provide an interesting source of genetic variability due to its proximity to the centers of domestication. This study aimed to assess the morphological variation, genetic diversity and population substructure of the Syrian goat populations. Commonly, three goat genotypes are distinguished in Syria, namely Jabali or mountain goat, Baladi or local goat and Shami or Damascus (a well-known dairy...
May 2016
Lipase-producing fungi for potential wastewater treatment and bioenergy production
The use of fungal biomass as a lipase biocatalyst represents an attractive approach for the treatments of oil wastewater as well as for the production of biodiesel from oil and residual grease, due to its greater stability, possibility of reuse, and lower cost. In this work, 20 filamentous fungi were isolated from the grease trap scum of a restaurant at the Federal University of Espírito Santo, Brazil. The fungi...
April 2016
Cloning, over-expression, and characterization of a new carboxypeptidase A gene of Bacillus pumilus ML413 in Bacillus subtilis 168
Carboxypeptidase A (CPAs) are a well-studied group of zinc-containing exopeptidases that facilitate the breakdown of proteins and peptides during metabolism. Carboxypeptidase A is typically produced in mammalian pancreatic, brain and other tissues. A new gene encoding carboxypeptidase A in the prokaryote Bacillus pumilus was amplified by polymerase chain reaction (PCR), ligated into the shuttle vector pMA5, and cloned...
April 2016
Production, optimization and characterization of extracellular amylase from halophilic Bacillus lichineformis AH214
Twenty one moderately halophilic bacterial strains were isolated from seawater and sediment in Alexandria Eastern Harbour, Egypt. The isolates were screened for the production of four extracellular degradative enzymes. The majority of isolates (57.1%) possessed significant enzyme activities, 43% of them have potentiality to produce amylase enzyme. The most active isolate for the production of amylase enzyme was...
April 2016
Molecular serotype and evolutionary lineage of Listeria monocytogenes isolated from different Nigerian food items
The molecular serotypes and the evolutionary lineage of Listeria monocytogenes isolated from various foods in Nigeria are yet to be documented. Consequently, popular uncooked food items known locally as Okazi Utazi, Onugbu, Ogbono, Garri and Egusi obtained from plants botanically known as Gnetum africanum, Gongronema latifolium, Vernonia amygdalina, Irvingia gabonensis, Manihot esculanta Crantz and Colocynthis...
April 2016
In vitro production of thiophenes using hairy root cultures of Tagetes erecta (L.)
Marigold (Tagetes spp.) is a source of thiophenes, which are a group of heterocyclic sulfurous compounds possessing strong biocidal activity, thus making Tagetes plants very useful as natural source of agents for controlling pathogens such as nematodes, insects, fungi and bacteria. Hairy root cultures of Tagetes erecta L. were developed using Agrobacterium rhizogenes mediated transformation. The hairy root clones showed...
April 2016
Screening for attractants compatible with entomopathogenic fungus Metarhizium anisopliae for use in thrips management
Several thrips attractants were screened for compatibility with Metarhizium anisopliae (Metchnikoff) Sorokin (Hypocreales: Clavicipitaceae) and a subset of these for attraction to Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae). Conidial germination and germ tube length of M. anisopliae were used as indicators of its compatibility with thrips attractant. Conidial germination and germ tube length differed...
April 2016
Antibacterial activity of six indigenous Indian plants: Acacia nilotica (Fabaceae), Albizia saman (Fabaceae), Azadirachta indica (Meliaceae), Carica papaya (Caricaceae), Cymbopogon citratus (Poaceae) and Mangifera indica (Anacardiaceae)
Plants have been used as major source of active compounds with medicinal importance since human civilization. These naturally occurring pharmacologically active agents have least or no toxicity to the host. The antibacterial activity of extracts (water, acetone and methanol) from six indigenous Indian plants: Acacia nilotica (Fabaceae), Albizia saman (Fabaceae), Azadirachta indica (Meliaceae), Carica papaya...
April 2016
Growth promotion and elicitor activity of salicylic acid in Achillea millefolium L.
Salicylic acid (SA) is a phenolic compound present in plants and has multiple functions, including hormonal effect on stimulus of plant growth and development and induction of plant defense responses under conditions of biotic and abiotic stresses. Studies related to SA’s elicitor action on the synthesis of secondary metabolite in medicinal plants have been conducted in order to increase the economic value of...
April 2016
Characterization of potential probiotic bacteria isolated from sorghum and pearl millet of the semi-arid tropics
The present study was conducted to isolate and characterize probiotic properties of bacteria isolated from flour and batter samples of sorghum and pearl millet. A total of five different selective media including plate count agar, yeast glucose chloramphenicol agar, Bifidobacterium agar, actinomycetes isolation agar and de ManRogosa and Sharpe agar were used and the most prominent bacteria (which were found abundantly...
April 2016
Chemical composition, antioxidant effects and antimicrobial activities of some spices’ essential oils on food pathogenic bacteria
Thymus vulgaris, Cinnamomum zeylanicum and Ocimum gratissimum are spices widely used as aroma enhancers and food preservatives. This work assessed the chemical composition, antioxidant and antimicrobial effect of their essential oils on some food pathogenic bacteria, namely, Staphylococcus aureus, Citrobacter freundii, Enterobacter cloacae, Morganella morganii, Escherichia coli, Salmonella typhimurium, Proteus vulgaris...
April 2016
Comparison of phenolic and volatile profiles of edible and toxic forms of Detarium senegalense J. F. GMEL
In Senegal, Detarium senegalense J.F. Gmel. (ditax in Wolof) is one of the most important ¶important forest fruit species. ¶However, exploitation of the edible fruit is based on local people’s knowledge. Only trees whose fruits are consumed by animals are exploited. ¶To identify them, a chemical comparison of edible and toxic forms was done in order to highlight differences between both forms....
April 2016
Comparison of the properties of collagen extracted from dried jellyfish and dried squid
With increased recent interest in the utilization of industrial by-products, finding different sources, optimizing extracting conditions and characterization of collagen extracts have recently become important research topics. This study addresses the isolation of acid-soluble and pepsin-soluble forms of collagen from dried jellyfish and squid, and their partial characterization. The properties of these proteins have...
April 2016
Production and characterization of β-glucosidase from Gongronella butleri by solid-state fermentation
Among the enzymes of the cellulolytic complex, β-glucosidases are noteworthy due to the possibility of their application in different industrial processes, such as production of biofuels, winemaking, and development of functional foods. This study aimed to evaluate the production and characterization of β-glucosidase from the filamentous fungus Gongronella butleri, recently isolated from Cerrado soil and...
April 2016
Spectrophotometric method for quantification of soil microbial biomass carbon
The search for more suitable alternatives in analytical processes is a strategy to reduce environmental damages. The present study aimed to quantify the soil microbial biomass carbon (SMB-C), establishing a comparison between the methods involving quantification of SMB-C by titration of the samples with ferrous sulfate ammonia and molecular absorption spectrophotometry methods. This comparison was performed by two soil...
April 2016
Prospects of genetic modified maize crop in Africa
Genetic modified maize crop increases annually as a result of food insecurity and limited land caused by rapid population increase of over seven billion in the world. Scientists have been playing their role to address this food insecurity problem. The use of genetically modified (GM) maize crop to feed people is one of the proposed ways, because it yields more compared to the conventional varieties. However, there are...
April 2016
Genome-wide analysis of mechanosensitive channel of small conductance (MscS)-like gene family in common bean
Mechanosensitive (MS) ion channels are transmembrane proteins that open and close in response to mechanical forces produced by osmotic pressure, sound, touch and gravity. In plants, MS have an important role in different biological processes like gravity detection, maintenance of plastid shape and size, lateral root emergence, growth of pollen tube, and plant-pathogen interactions. In this study, homologous...
April 2016
Biochemical effects of ethylene diamine tetra-acetic acid (EDTA) on cadmium treated maize (Zea mays L.) and cowpea (Vigna unguiculata L.)
The effects of ethylenediaminetetra-acetic acid (EDTA) on germination, length of stem, area of leaf, fresh weight, level of lipid per oxidation, alkaline phosphatase, acid phosphatase, super oxide dismutase (SOD) and catalase in the roots of cadmium (Cd) treated maize (Zea mays L) and cowpea (Vigna unguiculata L) seedlings after 7 and 21 days of germination were determined in this study. The results obtained, indicate...
April 2016
Effect of monosodium glutamate and aspartame on behavioral and biochemical parameters of male albino mice
The present study aimed to investigate the individual and combined effect of mono-sodium glutamate (MSG) and aspartame (ASM) on biochemical, blood parameters and neuro-behavioral aspects of mice. The results indicated that exposure induced many changes in fear and anxiety behavior. The non-social and social behavior of the exposed mice was significantly affected, showing an increase in the former and a decrease in the...
April 2016
In vitro antimicrobial properties of friedelan-3-one from Pterocarpus santalinoides L’Herit, ex Dc
Chemical investigation of ethyl acetate leaf-extract of Pterocarpus santalinoides led to isolation of a friedelane-terpenoid. Structure elucidation was done by comparison of the Nuclear Magnetic Resonance (NMR) spectral features with literature data and was consistent with reported values for friedelan-3-one. The following microorganisms (Clinical isolates): methicillin resistant Staphylococcus aureus (MRSA), S. aureus,...
April 2016
Nanoformulation and antibiotic releasing property of cefotaxime nanoparticles
The objective of this study was to design nano-antibiotic to enhance their release from biomaterial agents. Cefotaxime was used as a model antibiotic substance in this carrier system. These nanoparticles were preformulated using different concentrations of polycaprolactone (PCL) and poly (vinyl alcohol) as coating material and prepared using double emulsion solvent evaporation method. The physiochemical properties...
April 2016
Polymorphism of growth hormone gene and its association with wool traits in Egyptian sheep breeds
Growth hormone (GH) gene has been described as a candidate gene for marker-assisted selection in different farm animals. The present study was designed to identify the polymorphism in GH gene and its association with variation of wool traits in Egyptian sheep breeds. Wool and blood samples were collected from 42 animals including two breeds (Barki and Rahmani) and one crossbred (Rahmani x Awase). Measurements of wool...
April 2016
Effects of diets containing Cissus rotundifolia flour on lipid profile of rats and postprandial glucose levels of normoglycemic human adults
This study evaluated the effect of Cissus rotundifolia (CR), on the lipid profile of rats and postprandial blood glucose level of normoglycemic human adults. CR flour was processed using traditional Nigerian method of processing. The animal experiment involved male Sprague-Dawley rats fed for 14 days with hypercholesterolemic diet of corn oil, cholesterol, casein, mineral mix, vitamin mix, sucrose, solka floc and corn...
March 2016
Possibilities of sweet potato [Ipomoea batatas (L.) Lam] value chain upgrading as revealed by physico-chemical composition of ten elites landraces of Benin
Sweet potato is one of the most important food security promoted root crops in the world, especially in sub-Saharan Africa. Unfortunately, the crop is still neglected and underutilized in Benin Republic. To establish baseline data for its better utilization for upgrading its value chain, 10 selected local varieties (01 cream, 02 white, 03 yellow, and 04 orange flesh-colored) were compared for their macro-nutritional...
March 2016
Effect of osmotic stress on in vitro propagation of Musa sp. (Malbhog variety)
In vitro propagation of banana preferably use sword sucker as explant source where microbial contamination poses a great problem in establishment of aseptic cultures. This study demonstrates up to 36% reduced microbial contamination in aseptic culture establishment and subsequent micropropagation due to osmotic stress induction in the banana suckers. Osmotic stress was induced by keeping the freshly collected suckers in...
March 2016
Development of putative transgenic lines of cassava variety H-226
Cassava production in India is drastically affected by cassava mosaic disease (CMD) caused by the Indian cassava mosaic virus (ICMV) and Sri Lankan cassava mosaic virus (SLCMV). An attempt was done to develop transgenic cassava lines resistant to SLCMV through RNAi vector targeting a conserved 440 bp of 5’ end of SLCMV Rep (AC1) gene which also overlaps with part of AC4 gene, and functions as a viral RNAi...
March 2016
Determining water content and other impurities in Siparuna guianensis Aublet essential oil using differential scanning calorimetry
Siparuna guianensis Aublet is a predominant species in the Brazilian Cerrado. Some studies found that its essential oil has properties that could be useful for manufacturing new products. Its quality depends on physicochemical properties, since its degradation, as well as water content and other volatile materials may cause several changes in its features. The differential scanning calorimetry (DSC) was used to...
March 2016
Antioxidant activity, phenolic and flavonoid contents of some wild medicinal plants in southeastern Algeria
This study reported on five plants known for their use in traditional medicine in southeastern Algeria, namely: Artemisia campestris, Asteriscus pygmaeus, Pituranthos chlorantus, Pallenis spinosa and Aizoon hispanicum. The work aimed to determine the antioxidant activity, phenol and flavonoid contents of their aqueous and methanolic extracts. Flavonoids and phenol contents varied according to the nature of the extract...
March 2016
Genetic diversity and gene flow revealed by microsatellite DNA markers in some accessions of African Plum (Dacryodes edulis) in Cameroon
Dacryodes edulis is a multipurpose tree integrated in the cropping system of Central African region still dominated by subsistence agriculture. Some populations grown are wild which can provide information on the domestication process, and could also represent a potential source of gene flow. Leaves samples for DNA extraction were collected from wild forms in Mbakwa supe region and from cultivated forms in Yaounde and...
March 2016
Estimate of genetic diversity in cassutinga (Croton heliotropiifolius) based on molecular markers
The Croton heliotropiifolius (Euphorbiaceae family) is a shrubby plant that has attracted attention both by the need for conservation as for their pharmacological potential. The present study aimed to characterize the diversity and structure genetic of a population of C. heliotropiifolius present in a forest fragment in the city of Itapetinga, Bahia. Young leaves were collected from 41 individuals after DNA extraction...
March 2016
In vitro screening of selected essential oils from medicinal plants acclimated to Benin for their effects on methane production from rumen microbial fermentation
Enteric methane production lowers the efficiency of feed utilization in ruminants and contributes to greenhouse gas emissions which are responsible for global climate change. This study examined the effects of nine essential oils (EO) from Citrus aurantifolia, Cymbopogon citratus, Eucalyptus citriodora, Laurus nobilis, Lippia multiflora, Mentha piperita, Ocimum basilicum, Ocimum gratissimum and Zingiber officinalis on...
March 2016
Nutritional composition of bioproducts generated from semi-solid fermentation of pineapple peel by edible mushrooms
Mushroom production is a very efficient alternative to agro-industrial residues recycling. The proximal composition, content of macro and micro minerals, amino acid and proteolytic activity were assessed in the pineapple peel and in the bioproducts generated from pineapple peel and mycelium of Pleurotus albidus, Lentinus citrinus and Pleurotus florida. The bioproducts were obtained by semi-solid fermentation and drying...
March 2016
Histopathological changes in female rabbits administered with aqueous extract of Calotropis procera
Calotropis procera is an evergreen perennial shrub, which is found mainly in the arid regions and produces copious latex when cut. It has been reported to possess medicinal properties but equally pose deleterious effect in animals. In a bid to exploit its pharmacological properties, it was necessary to ascertain its level of safety. A toxicological evaluation of the aqueous extract of fresh leaves of the plant was...
March 2016
Effect of osmotic stress on in vitro propagation of Musa sp. (Malbhog variety)
In vitro propagation of banana preferably use sword sucker as explant source where microbial contamination poses a great problem in establishment of aseptic cultures. This study demonstrates up to 36% reduced microbial contamination in aseptic culture establishment and subsequent micropropagation due to osmotic stress induction in the banana suckers. Osmotic stress was induced by keeping the freshly collected suckers in...
March 2016
In vitro regenerative potentials of the medicinal plant Abutilon indicum (L.) Sweet
The present study was undertaken to evaluate the most suitable concentration of growth regulators for callus induction and subsequent organogenesis in Abutilon indium (L.) Sweet (Malvaceae) leaf, stem and seed explants. Since the plant has a lot of medicinal importance, it was subjected to culture in vitro. Kinetin for seeds, 2,4-dichlorophenoxyacetic acid (2,4-D), benzyl amino purine (BAP), naphthalene acetic acid...
March 2016
Glyoxalase I expression pattern in Hevea brasiliensis seedlings under varied stress conditions
Drought is one of the most important stress factors which adversely affect plants’ growth and productivity. Global climate change may make this situation more serious in the years ahead. Considering the long time span required for the generation of drought resistant genotypes in Rubber (Hevea brasiliensis) through conventional breeding, molecular interventions to engineer plants to have either drought...
March 2016
Nutritional food content of seed and effects of five different growing media on the seed germination and seedling growth of Afzelia africana SM Caesalpiniaceae
Nutritional food content of seed and effect of five different growing media: Top forest soil (TS), sawdust (SD), 2:1 mixture of; TS+SD, TS+composted poultry manure (TS+PM) and 2:1:1 mixture of TS+SD+PM on the seed germination and seedling growth of Afzelia Africana SM Caesalpiniaceae were investigated. Thirteen chemical food nutrients were detected in the species seed. These occurred in varying percentages. The...
March 2016
Response of African eggplants to Fusarium spp. and identification of sources of resistance
Eggplant (Solanum spp.) production in Arumeru district and other parts of Africa is severely affected by wilting diseases of unknown etiology. Fusarium spp. characterized through morphological and sequence analysis of the translation elongation factor associated with Fusarium wilt of eggplants was used to test the response of three different eggplant species. Three Solanum spp. accessions were tested in a screen house...
March 2016
A commercial micropropagation protocol for virupakshi (AAB) banana via apical meristem
In vitro micropropagation of banana (Musa spp.) cv.virupakshi (Hillbanana) was studied. Suckers were collected from the germ plasm block of Jain R&D (originally established from the suckers from Palani Hills, Tamil Nadu) during summer. The sucker surface sterilized with 1% NaOCl for 30 min gave 100% survival without any contamination. Apical meristems that were isolated and cultured on MS based media supplemented...
March 2016
Detection of extracellular enzymatic activity in microorganisms isolated from waste vegetable oil contaminated soil using plate methodologies
In the present study, from a total of 100 strains isolated from waste vegetable oil contaminated soil, 38 bacterial and 14 fungi strains that presented positive lipolytic activity were obtained by detection through Rhodamine B Agar 0.02% w/v as a screening method. Additionally, two other enzymatic activities were determined. Positive proteolytic activity was evaluated in Casein Hydrolysis Agar and chitinolytic activity...
March 2016
Production of thermophilic and acidophilic endoglucanases by mutant Trichoderma atroviride 102C1 using agro-industrial by-products
Many traditional mutagenic strategies have been used to improve cellulase production by micro-organisms, especially fungi species. Trichoderma species are among cellulolytic fungi, those that have been most extensively studied, due to their efficient production of these enzymes. In the present study, N-methyl-N´-nitro-N-nitrosoguanidine (NTG) was used as mutagenic agent to obtain cellulolytic mutant from wild...
March 2016
Genetic diversity and structure of goats within an early livestock dispersal area in Eastern North Africa
In this study we genotyped 14 microsatellites to assess genetic diversity, population stratification and demographic dynamics using Egyptian local goats (Zaraibi, Baladi, Saidi and Barki) and the Shami (Damascus) goat from the Middle East and West Asia close to the geographic center of goat domestication. We observed high levels of allelic and genetic diversity that was partitioned into six gene pools. Cluster analyses...
March 2016
Histological and biochemical evaluations of the liver and kidney of Wistar rats fed with fish meal of Sarotherodon melanotheron captured with Tephrosia vogelii’s powder
To evaluate the toxicity of fish captured with Tephrosia Vogelii (TV), an ichtyotoxic plant, the Wistar albino rats were fed with the flour of tilapias Sarotherodon melanotheron poisoned with TV leaves powder. This study aimed to evaluate the poisonous effects of TV on various organs of rats, especially the liver and kidney. Three groups of Wistar rats were constituted and fed for 28 days. Histological sections were...
March 2016
Unexplored vegetal green synthesis of silver nanoparticles: A preliminary study with Corchorus olitorus Linn and Ipomea batatas (L.) Lam
Antibacterial properties of silver ion are known from ancient times. The plant extract mediated synthesis of nanoparticles is gaining popularity due to green chemistry for the generation of nanosized materials. Corchorus olitorus Linn and Ipomea batatas (L.) Lam are world crops having leaves of high nutritional value. In the present work, Ag and AgCl nanoparticles were synthesized by incubating leaf aqueous extracts...
March 2016
Effects of season on the yield and quality of agar from Gelidium sesquipedale (Rhodophyta) from Mostaganem, Algeria
The aim of this work was to study the seasonal variations in the yield and physicochemical properties of agar of Gelidium sesquipedale. The algae were collected from January 2011 to December 2011, from the coast of Mostaganem, western Algeria. The overall results show that the dry biomass of Gelidium sesquipedale was constant throughout the year (22.34 ± 3.18 %), while the agar yield varied seasonally with...
March 2016
Chemical compositions and antimicrobial activity of twig essential oils from three Xylopia (Annonaceae) species
The chemical composition of twig essential oils of Xylopia malayana, Xylopia elliptica and Xylopia fusca were analyzed using GC and GCMS. Both X. malayana (12.9%) and X. fusca (11.8%) twig oils contained spathulenol as the major constituent while X. elliptica twig oil was found to be rich in terpinen-4-ol (11.9%). The antimicrobial activities of the essential oils were evaluated against six gram positive bacteria, two...
March 2016
Effect of acaricidal activity of Solanum nigrum on Tetranychus urticae Koch under laboratory conditions
Tetranychus urticae is an economically important pest for different commercial crops and is traditionally controlled with synthetic chemical products that are usually toxic. Therefore, alternative strategies are implemented to allow producers to meet the phytosanitary requirements demanded by quality seals. One of these alternatives is the use of plant extracts. The aim of this study was to determine the effect of...
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