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Effect of Organosolv Process on Structural Characteristics and Enzymatic Digestibility in Pinus Radiata Wood

材料科学与工程（中英文B版） 2012年第2期2卷 112-125页

作者： Mariel Elayne Monrroy Almengor pamela gonzalez Jaime Baeza Renewable Resources Laboratory Biotechnology Center Universidad de Concepcion Faculty of Chemical Sciences Universidad de Concepcion

The organosolv pretreatment was performed on Pinus radiata chips unbiotreated or biotreated by Gloephyllum trabeum. Its effect on the structural characteristics of the material and therefore in the effectiveness of the enzymatic hydrolysis and fermentation was evaluated. The influences of organic solvents, reaction time, and catalyst dose on the pulp yields and composition were evaluated and 17 pulps were obtained for each material. Pulp yields ranging from 29 to 47%, and the glucan recovery was up to 79% for organosolv pulp and 81% for biorganosolv pulp. Lignin and mannan+ galactan+ xylan removal reached values over 59 and 76%, respectively. Organosolv and biorganosolv processes decreased the crystallinity (CrI) and the polymerization degree (DP) of cellulose. Enzymatic hydrolysis of pulps presented values between 64 and 96%. Decreases in DP, CrI and in lignin and hemicellulose contents resulted in a better enzymatic hydrolysis. In addition, the materials were submitted to simultaneous saccharification and fermentation. The maximum ethanol yield was 66 and 64% (% of theoretical maximum yield of ethanol) for organosolv and bio-organosolv pulp, respectively. The maximum ethanol yield was obtained from pulp pretreated under less severe conditions and using a lower enzymatic load than used in previous studies on bioethanol production from P. radiata organosolv pulps. A viable alternative to bio-organosolv process that can be used is a bio-mimetic system, similar to low- molecular complexes generated by fungi combined with organosolv process.

关键词：有机溶剂结构特性辐射松酶解特征和纸浆产量纤维素含量乙醇生产

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Fecal immunochemical test accuracy in average-risk colorectal cancer screening

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World Journal of Gastroenterology 2014年第4期20卷 1038-1047页

作者： Vicent Hernandez Joaquin Cubiella M Carmen gonzalez-Mao Felipe Iglesias Concepción Rivera M Begoa Iglesias Lucía Cid Ines Castro Luisa de Castro Pablo Vega Jose Antonio Hermo Ramiro Macenlle Alfonso Martínez-Turnes David Martínez-Ares pamela Estevez Estela Cid M Carmen Vidal Angeles López-Martínez Elisabeth Hijona Marta Herreros-Villanueva Luis Bujanda Jose Ignacio Rodriguez-Prada the COLONPREV study investigators Department of Gastroenterology Complexo Hospitalario Universitario de Vigo Department of Gastroenterology Complexo Hospitalario Universitario de Ourense Department of Clinical Analysis Complexo Hospitalario Universitario de Vigo Department of Pathology Complexo Hospitalario Universitario de Vigo Department of Gastroenterology Donostia Hospital Biodonostia Institute University of the Basque Country UPV/EHU

AIM: To assess the fecal immunochemical test (FIT) accuracy for colorectal cancer (CRC) and advanced neoplasia (AN) detection in CRC screening.

关键词： Colorectal neoplasms Early detection of cancer Sensitivity and specificity Adenoma Occult blood Cost-benefit analysis

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