1089 strains of yeasts were obtained from seawater,sea sediments,mud of sea salterns,guts of marine fishes,mangroveplants and marine algae.The results of routine identification and molecular analysis methods show that...1089 strains of yeasts were obtained from seawater,sea sediments,mud of sea salterns,guts of marine fishes,mangroveplants and marine algae.The results of routine identification and molecular analysis methods show that 44 strains among the marineyeasts obtained in this study belong to Candida tropicalis,which may indicate its wide distribution in different environment,especially in the tropical and subtropical marine environment.The wide distribution of C.tropicalis indicates that it may play an important role in marine environment and the marine environment in turn is a good source for obtaining C.tropicalis.展开更多
Organic biomass is an attractive feedstock for second generation alcohol production. Wild-type strains of the genus Candida showed capabilities different to produce alcohol fermenting a carbohydrates mixture (synthet...Organic biomass is an attractive feedstock for second generation alcohol production. Wild-type strains of the genus Candida showed capabilities different to produce alcohol fermenting a carbohydrates mixture (synthetic medium), individually and in co-culture. Therefore, the main objective of this work was to evaluate the capability of Candida wild-type strains isolated from termite gut and rumen liquid, to ferment the most commonly carbohydrates presented in citrus residues, individually and in co-culture to alcohol production. C Tropicalis (LR4) presented higher percentage of carbohydrate consumption (74.20% ± 4.60%), alcohol production (44.53 ± 0.01 gLl) and maximal alcohol productivity (6.40 ± 0.01 gL-l day) than C Glabrata (T1). Co-culture schemas, CC1 (LR4: 60%; TI: 40%) and CC3 (first LR4 alone and 2 days later T1) presented the highest alcohol production (45.20 ± 1.30 gL-1 and 46.80 ± 2.60 gL-1, respectively). Maximal alcohol productivity was obtained with CC2 (LR4: 80%; TI: 20%) and CC3 schemas, 7.70 ± 0.29 gL-1 day and 7.80 ± 0.44 gL-l day, respectively. The results suggest the usefulness of these wild-type strains in co-culture as an alternative to alcohol production from carbohydrates mixtures at concentrations commonly found in citrus waste.展开更多
OBJECTIVE: To report some of the pharmacological features of the medicinal plant Ocimum basilicum.METHODS: In the current studies, Antifungal activity of crude methanolic fraction of Ocimum basilicum was determined ag...OBJECTIVE: To report some of the pharmacological features of the medicinal plant Ocimum basilicum.METHODS: In the current studies, Antifungal activity of crude methanolic fraction of Ocimum basilicum was determined against eight pathogenic fungal strains using tube dilution assay. The methanolic fraction was also investigated for phytotoxic and hemagglutination activity.RESULTS: Of the eight strains investigated only Candida albicans and Curvilaria lunata were found to be least affected by plant extract while the rest were significantly inhibited. Moderate phytotoxic activity was observed against lemna minor. Hemagglutination activity showed absence of phytolectins and hence no agglutination of erythrocytes.CONCLUSION: The crude extract of Ocimum basilicum has significant properties against fungi and phytotoxic substances.展开更多
基金supported by the National Infrastructure of Natural Resources for Science and Technology Program of China(Grant No.2005DKA21209)
文摘1089 strains of yeasts were obtained from seawater,sea sediments,mud of sea salterns,guts of marine fishes,mangroveplants and marine algae.The results of routine identification and molecular analysis methods show that 44 strains among the marineyeasts obtained in this study belong to Candida tropicalis,which may indicate its wide distribution in different environment,especially in the tropical and subtropical marine environment.The wide distribution of C.tropicalis indicates that it may play an important role in marine environment and the marine environment in turn is a good source for obtaining C.tropicalis.
文摘Organic biomass is an attractive feedstock for second generation alcohol production. Wild-type strains of the genus Candida showed capabilities different to produce alcohol fermenting a carbohydrates mixture (synthetic medium), individually and in co-culture. Therefore, the main objective of this work was to evaluate the capability of Candida wild-type strains isolated from termite gut and rumen liquid, to ferment the most commonly carbohydrates presented in citrus residues, individually and in co-culture to alcohol production. C Tropicalis (LR4) presented higher percentage of carbohydrate consumption (74.20% ± 4.60%), alcohol production (44.53 ± 0.01 gLl) and maximal alcohol productivity (6.40 ± 0.01 gL-l day) than C Glabrata (T1). Co-culture schemas, CC1 (LR4: 60%; TI: 40%) and CC3 (first LR4 alone and 2 days later T1) presented the highest alcohol production (45.20 ± 1.30 gL-1 and 46.80 ± 2.60 gL-1, respectively). Maximal alcohol productivity was obtained with CC2 (LR4: 80%; TI: 20%) and CC3 schemas, 7.70 ± 0.29 gL-1 day and 7.80 ± 0.44 gL-l day, respectively. The results suggest the usefulness of these wild-type strains in co-culture as an alternative to alcohol production from carbohydrates mixtures at concentrations commonly found in citrus waste.
基金Supported by University of Peshawar(Bio-activities of methanolic extracts of Ocimum basilicum)
文摘OBJECTIVE: To report some of the pharmacological features of the medicinal plant Ocimum basilicum.METHODS: In the current studies, Antifungal activity of crude methanolic fraction of Ocimum basilicum was determined against eight pathogenic fungal strains using tube dilution assay. The methanolic fraction was also investigated for phytotoxic and hemagglutination activity.RESULTS: Of the eight strains investigated only Candida albicans and Curvilaria lunata were found to be least affected by plant extract while the rest were significantly inhibited. Moderate phytotoxic activity was observed against lemna minor. Hemagglutination activity showed absence of phytolectins and hence no agglutination of erythrocytes.CONCLUSION: The crude extract of Ocimum basilicum has significant properties against fungi and phytotoxic substances.