January 2013
Fruit maturation and in vitro germination of macaw palm embryos
Acrocomia aculeata (macaw palm) is oil producing palm tree with significant agro-industrial potential. Seed dormancy in palm species may be due to embryo immaturity, which could result from delayed embryogenesis. We evaluated the correspondence between the visual characteristics of maturing fruits and their physiological aspects and the in vitro germination capacity of the embryos. 11 fruit...
January 2013
Ecological assessment of Great Lota Lake (Turkey) on the base of diatom communities
The diatoms are very important component for aquatic ecosystems. Turkey has a rich lake potential and many of the lakes have high level of endemism. For this reason, the Great Lota Lake was investigated between October 2000 and October 2001 in sampling periods of approximately per 15 days from one station. Totally, 104 diatom taxa were identified and used for ecological analysis...
January 2013
Production and characterization of cellulolytic activities produced by Trichoderma longibrachiatum (GHL)
The indigenous cellulolytic fungus Trichoderma longibrachiatum (GHL) isolated from soil near an Algerian hot spring was used for the production of cellulases by submerged fermentation on Mandels medium with cellulose Avicel (1%) as the sole carbon source. Endoglucanase and filter paper activities of the wild-type strain ofTrichoderma were compared to the hypercellulolytic...
January 2013
Antibacterial activity of root and leaf extracts of Jatropha zeyheri Sond (Euphorbiaceae)
Resistance of human pathogenic bacterial strains results in selective pressure against known antibiotics. Jatropha zeyheri is used by traditional medicine practitioners in the treatment of sexually transmitted and urinary tract infections. Acetone, methanol and ethyl acetate extracts of both leaves and roots of Jatropha zeyheri collected from Capricorn District, Limpopo Province, South...
January 2013
Enhanced production of poly glutamic acid by Bacillus sp. SW1-2 using statistical experimental design
Bacillus sp. SW1-2 producing poly glutamic acid (PGA), locally isolated from Eastern province in Saudi Arabia, was characterized and identified based on 16S rRNA gene sequencing. Phylogenetic analysis revealed its closeness to Bacillus megaterium. The homopolymer consists mainly of glutamic as indicated in the analysis of amino acid. Preliminary optimization of PGA production, through a series of...
January 2013
Stability profile of flavour-active ester compounds in ale and lager beer during storage
Currently, one of the main quality problems of beer is the change of its chemical composition during storage, which alters its sensory properties. In this study, ale and lager beers were produced and aged for three months at two storage temperatures. Concentration of volatile ester compounds (VECs) in the beers was regularly monitored by gas chromatographic analysis of the headspace samples to establish...
January 2013
Acute toxicity of the chloroacetanilide herbicide butachlor and its effects on the behavior of the freshwater fish Tilapia zillii
Acute toxicity of butachlor, a chloroacetanilide herbicide (2-chloro-N-[2, 6-diethylphenyl] acetamide) to Tilapia zillii, was studied in a semi static bioassay. The 24, 48, 72 and 96 h LC50 values (with 95% confidence limits) estimated by probit analysis were 3.13 (2.88 to 4.61), 1.93 (0.63 to 4.41), 1.27 (0.59 to 1.92) and 1.25 (0.60 to1.85) mgl-1, respectively. There were significant differences...
January 2013
Isolation, characterization and molecular weight determination of collagen from marine sponge Spirastrella inconstans (Dendy)
Collagen is a major structural protein of connective tissues. It can be used as a prosthetic biomaterial applicable to artificial skin, tendon ligaments and development collagen implants. In the present study, an attempt was made to isolate and characterize collagen from the marine sponge, Spirastrella inconstans. The total protein content of sponge collagen was relatively high (32%). While...
January 2013
New purification process of fungal immunomodulatory protein, FIP-fve from Flammulina velutipes via filtration and column chromatography
Microfiltration, ultrafiltration, cation exchange and size-exclusion chromatography were used to isolate FIP-fve from Flammulina velutipes fruiting body in the pilot scale. At the sample preparing stage, the homogenate of mushroom is usually hard to be resolved hence microfiltration was used to clarify the homogenate of F. velutipes efficiently. Next ultrafiltration is applied to...
January 2013
Haematological indices of Channa punctatus as an indicator of heavy metal pollution in waste water aquaculture pond, Panethi, India
Investigations on the concentration of heavy metals (Cu, Ni, Fe, Co, Mn, Cr and Zn) in water and their effects on haematological parameters were observed in Channa punctatus. The results reveal that heavy metals available in water were in the order Fe > Mn > Zn > Co > Ni > Cu = Cr. In the present study, the haematological data of C. punctatus revealed that significant...
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