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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 32 (1988), S. 341-344 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Some properties of the cellulolytic complex obtained from Trichoderma reesei QM 9414 grown on Solka floc as carbon source and its ability to hydrolyze the lignocellulosic biomass of Onopordum nervosum Boiss were studied. The optimum enzyme activity was found at temperatures between 50 and 55°C and pH ranging from 4.3 to 4.8. Hydrolysis of 4-nitropnenyl-β-D-glucopyranoside (4-NPG) and cellobiose by the β-glucosidase of the complex, showed competitive inhibition by glucose with a Ki value of 0.8 mM for 4-NPG and 2. 56 mM for cellobiose. Enzymatic hydrolysis yield of Onopordum nervosum, evaluated as glucose production after 48 h, showed a threefold increase by pretreating the lignocellulosic substrate with alkali. When the loss of glucose incurred by de pretreatment was taken into account, a 160% increase in the final cellulose to glucose conversion was found to be due to the pretreatment.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2021-05-19
    Description: De enero a diciembre de 2008 la flota arrastrera camaronera de Esmeraldas desembarcó un total de 322,3 t, el cual representó un decremento del 21.3 % con relación al 2007. Para la obtención de esta información se utilizó encuestas pesqueras (zonas y días efectivos de pesca, desembarques etc.) y biológicas (sexo, estadio gonadal y talla). La flota activa promedio estuvo compuesta por 19 barcos arrastreros camaroneros. La principal especie desembarcada fue el camarón café (Farfantepenaeus californiensis) la cual presentó un rango de tallas de captura entre 12,0 y 20,5 cm (LT), seguido del camarón rojo (F. brevirostris). En esta zona se registró un predominio de individuos hembras en estadio vacía e inmadura.
    Description: From january to december 2008, the fleet of shrimp trawlers Esmeraldas landed a total of 322.3 tons, which represents a decrease of 21.3% compared to 2007. To obtain this information is used fishing surveys (areas and days of actual fishing, landings etc.) And biological (sex, gonadal and height). The average active fleet consisted of 19 boats shrimp boats. The main species landed was the brown shrimp (Farfantepenaeus californiensis) which presents a range of sizes between 12.0 and capture 20.5 cm (LT), followed by the red shrimp (F. brevirostris). This area was a predominance of female individuals in the stadium empty and immature.
    Description: Published
    Keywords: Trawlers ; Landing statistics ; Sexual maturity ; Growth rate ; Shrimp fisheries ; Prawn fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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