Alkaline pretreatment methods followed by acid hydrolysis of Saccharum spontaneum for bioethanol production

2012 ◽  
Vol 124 ◽  
pp. 111-118 ◽  
Author(s):  
Gaurav Chaudhary ◽  
Lalit Kumar Singh ◽  
Sanjoy Ghosh
Keyword(s):  
Acid Hydrolysis ◽  
Alkaline Pretreatment ◽  
Saccharum Spontaneum ◽  
Bioethanol Production ◽  
Hydrolysis Of

scholarly journals Optimized acid hydrolysis of the polysaccharides from the seaweed Solieria filiformis (Kützing) P.W. Gabrielson for bioethanol production

2017 ◽  
Vol 39 (4) ◽  
pp. 423 ◽  
Author(s):  
George Meredite Cunha de Castro ◽  
Norma Maria Barros Benevides ◽  
Maulori Curié Cabral ◽  
Rafael De Souza Miranda ◽  
Enéas Gomes Filho ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Kinetic Parameters ◽  
Renewable Resource ◽  
Bioethanol Production ◽  
Seaweed Species ◽  
Mild Conditions ◽  
Hydrolysis Of ◽  
Solieria Filiformis

 The seaweeds are bio-resource rich in sulfated and neutral polysaccharides. The tropical seaweed species used in this study (Solieria filiformis), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric acid, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Galactose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The kinetic parameters of the fermentation of the seaweed hydrolyzed were Y(P⁄S) = 0.48 ± 0.02 g.g−1, PP = 0.27 ± 0.04 g.L−1.h−1, h = 94.1%, representing a 41% increase in bioethanol productivity. Therefore, S. filiformis was a promising renewable resource of polysaccharides easily hydrolyzed, generating a broth rich in fermentable monosaccharides for ethanol production. 

The acid hydrolysis of potato tuber mash in bioethanol production

2009 ◽  
Vol 43 (2) ◽  
pp. 208-211 ◽  
Author(s):  
Marija B. Tasić ◽  
Budimir V. Konstantinović ◽  
Miodrag L. Lazić ◽  
Vlada B. Veljković
Keyword(s):  
Potato Tuber ◽  
Acid Hydrolysis ◽  
Bioethanol Production ◽  
Hydrolysis Of

scholarly journals Dilute-Acid Hydrolysis of Apple, Orange, Apricot and Peach Pomaces as Potential Candidates for Bioethanol Production

2013 ◽  
Vol 7 (3) ◽  
pp. 376-389 ◽  
Author(s):  
Can Ucuncu ◽  
Canan Tari ◽  
Hande Demir ◽  
Ali Oguz Buyukkileci ◽  
Banu Ozen
Keyword(s):  
Acid Hydrolysis ◽  
Bioethanol Production ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Hydrolysis Of

Evaluation of hyper thermal acid hydrolysis of Kappaphycus alvarezii for enhanced bioethanol production

2016 ◽  
Vol 209 ◽  
pp. 66-72 ◽  
Author(s):  
Chae Hun Ra ◽  
Trung Hau Nguyen ◽  
Gwi-Taek Jeong ◽  
Sung-Koo Kim
Keyword(s):  
Acid Hydrolysis ◽  
Kappaphycus Alvarezii ◽  
Bioethanol Production ◽  
Thermal Acid Hydrolysis ◽  
Hydrolysis Of

scholarly journals Alkaline pretreatment and enzymatic hydrolysis of corn stover for bioethanol production

2021 ◽  
Vol 10 (11) ◽  
pp. e149101118914
Author(s):  
Letícia Renata Bohn ◽  
Aline Perin Dresch ◽  
Matheus Cavali ◽  
Ana Carolina Giacomelli Vargas ◽  
Jaíne Flach Führ ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Corn Stover ◽  
Raw Materials ◽  
Low Cost ◽  
Alkaline Pretreatment ◽  
Bioethanol Production ◽  
Lignocellulosic Residues ◽  
Wild Yeast ◽  
Hydrolysis Of ◽  
Cellic Ctec2

The demand for ethanol in Brazil is growing. However, although the country is one of the largest producers of this fuel, it is still necessary to diversify the production matrix. In that regard, studies with different raw materials are needed, mainly the use of low cost and high available wastes such as lignocellulosic residues from agriculture. Therefore, this study aimed to analyze the bioethanol production from corn stover. An alkaline pretreatment (CaO) was carried out, followed by enzymatic hydrolysis (Cellic Ctec2 and Cellic Htec2) to obtain fermentable sugars. The best experimental condition for the pretreatment and hydrolysis steps resulted in a solution with 0.31 gsugar∙gbiomass-1. Then, the fermentation was performed by the industrial strain of Saccharomyces cerevisiae (PE-2) and by the wild yeast strain Wickerhamomyces sp. (UFFS-CE-3.1.2). The yield obtained was 0.38 gethanol∙gdry biomass-1 was, demonstrating the potential of this process for bioethanol production.

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