Authors: Farías-Sánchez, Juan Carlos
López-Miranda, Javier
Castro-Montoya, Agustín Jaime
Saucedo-Luna, Jaime
Carrillo-Parra, Artemio
López-Albarrán, Pablo
Pineda-Pimentel, María Guadalupe
Rutiaga-Quiñones, José Guadalupe
Title: Comparison of five pretreatments for the production of fermentable sugars obtained from Pinus pseudostrobus L. wood
Language (ISO): en
Abstract: To benefit from the use of a waste product such as pine sawdust from a sawmill in Michoacán, Mexico, five different pretreatments for the production of reducing sugars by enzymatic hydrolysis were evaluated (sodium hydroxide, sulfuric acid, steam explosion, organosolv and combined method nitric acid / sodium hydroxide). The main finding of the study was that the pretreatment with 6 % HNO3 and 1 % NaOH led to better yields than those obtained with sodium hydroxide, dilute sulfuric acid, steam explosion, and organosolv pretreatments. Also, HNO3 yields were maximized by the factorial method. With those results the maxima concentration of reducing sugar found was 97.83 ± 1.59, obtained after pretreatment with 7.5 % HNO3 at 120 °C for 30 minutes; followed by 1 % of NaOH at 90 °C for 30 minutes at pH 4.5 for 168 hours with a load enzyme of 25 FPU/g of total carbohydrates. Comparing the results obtained by the authors with those reported in the literature, the combined method was found to be suitable for use in the exploitation of sawdust.
Subject Headings: reducing sugars
enzymatic hydrolysis
acid hydrolysis
pretreatments
pine sawdust
Pinus pseudostrobus
URI: http://hdl.handle.net/2003/34045
http://dx.doi.org/10.17877/DE290R-7479
Issue Date: 2015-03-13
Appears in Collections:Original Articles

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