Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production

Dagnino, Eliana Paola; Chamorro, Ester; Romano, Silvia Daniela; Felissia, Fernando Esteban; Área, María Cristina

doi:10.1016/j.indcrop.2012.06.019

Cited by 156 publications

(68 citation statements)

References 22 publications

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“…In the fermentation of the hydrolyzed of rice hull, Dagnino, Chamorro, Romano, Felissia, and Area (2013) related a production of 0.442% of bioethanol with an efficiency of 84% to the conversion. In this study, it was possible to obtain higher ethanol concentrations in comparison to the values reported in the literature and with a maximum conversion rate, showing that is possible to add value to the rice bran using it as main substrate in the bioethanol production.…”

Section: Alcoholic Fermentationmentioning

confidence: 99%

<b>Release optimization of fermentable sugars from defatted rice bran for bioethanol production

et al. 2018

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ABSTRACT. The aim of this study was to optimize the enzymatic hydrolysis of defatted rice bran (DRB) for release fermentable sugars with subsequent bioethanol production. Optimization of enzymatic hydrolysis was achieved using a sequential experimental design, performing a fractional factorial design of amyloglucosidase (AMG), at action times of two and three hours, respectively. In bioethanol production, it was evaluated the effect of adding of 15 μL g -1 of protease prior to the action of amylases. Fermentation was conducted at 29°C, with 4.0% Saccharomyces cerevisiae and initial pH of 5.0. The hydrolysis with protease yielded 3.55% ethanol, an increase of 115.15% in relation to the medium without protease addition, and the conversion had a yield of 101.5% in 24h of alcoholic fermentation. This study demonstrates the possibility to obtain bioethanol from DRB.

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Section: Alcoholic Fermentationmentioning

confidence: 99%

<b>Release optimization of fermentable sugars from defatted rice bran for bioethanol production

et al. 2018

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“…Rice hulls contain 36-40 g/100 g cellulose and 12-19 g/100 g hemicelluloses. Ash represents approximately 12 g/100 g, which is primarily silica (80-90 g/100 g) 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose Produced from Rice Hulls and its Effect on the Properties of Biodegradable Starch Films

et al. 2016

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Rice hull is a residue from agro-industry that can be used to produce nanocellulose. We produced nanocellulose from rice hulls through bleaching (with a 5% NaOH solution followed by a peracetic acid solution) and acid hydrolysis at a mild temperature (45ºC) followed by ultrasonication. We investigated the microstructure, crystallinity and thermal stability of these materials and studied their effects on the properties of starch films. After bleaching, the compact structure around the cellulosic fibers was removed, and the lignin content of the residue decreased from 7.22 to 4.22%. The obtained nanocellulose presented a higher crystallinity (up 70%), higher thermal stability than the raw material and lignin contents below 0.35%. The nanocellulose formed interconnected webs of tiny fibers (< 100 nm in diameter), which decreased the opacity, water vapor permeability and improved the mechanical properties when added as reinforcement in the starch films.

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“…The chemical compositions of the dried fruit of A. grossedentata were determined by the Feed & Food Nutrition Research Center at Pukyong National University in Korea, using the National Renewable Energy Laboratory, Laboratory Analytical Procedure, Technical Reports (NREL/TP) (Dagnino et al 2013). Reducing sugars were determined by the DNS method (Miller 1959).…”

Section: Methodsmentioning

confidence: 99%

Development of Improved Process with Treatment of Cellulase for Isolation of Ampelopsin from Dried Fruits of Ampelopsis grossedentata

Gao¹,

Lee²,

Li³

et al. 2016

BioResources

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The commercial method for isolation of ampelopsin, one of the most common flavonoids isolated from the plant species Ampelopsis grossedentata, is a simple hydrothermal extraction at high temperature. To develop an improved process to isolate ampelopsin, the effects of treatment of cellulase on hydrolysis of the dried fruit of A. grossedentata were investigated. The treatment of cellulase was found to decrease the temperature and time for hydrolysis of the dried fruit of A. grossedentata. The conditions of the filter press and continuous flow centrifuge for removal of insoluble materials from the hydrolysate of the dried fruit of A. grossedentata were optimized. The recovery yield of ampelopsin from the dried fruits of A. grossedentata was 39.4%, as determined by HPLC chromatographic analysis. A safe and economical process at low temperature with treatment of cellulase for the isolation of ampelopsin was developed in this study.

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Optimization of the acid pretreatment of rice hulls to obtain fermentable sugars for bioethanol production

Cited by 156 publications

References 22 publications

<b>Release optimization of fermentable sugars from defatted rice bran for bioethanol production

<b>Release optimization of fermentable sugars from defatted rice bran for bioethanol production

Nanocellulose Produced from Rice Hulls and its Effect on the Properties of Biodegradable Starch Films

Development of Improved Process with Treatment of Cellulase for Isolation of Ampelopsin from Dried Fruits of Ampelopsis grossedentata

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