Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification

Cara, Cristóbal; Ruiz, Encarnación; Ballesteros, Ignacio; Negro, M.J.; Castro, Eulógio

doi:10.1016/j.procbio.2005.07.007

Cited by 260 publications

(115 citation statements)

References 24 publications

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“…In this way enzymatic conversion of cellulose to glucose is improved. This results in high yields of woody biomass suitable for use as for example bio-based ethanol [358][359][360]. Some demonstration plants have been into operation but the technology has not reached full maturity yet.…”

Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

“…The residues mainly consist of thin branches, leaves and wood, comprising cellulose, hemicellulose, lignin, minerals and extractives. Valuable compounds of that can be extracted from these residues include glucose, phenolics and other antioxidants [360,[362][363][364]. Steam explosion is also considered as an effective pretreatment for obtaining valuable compounds from olive residues, including pomace and leaves [365,366].…”

Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

“…Steam explosion is also considered as an effective pretreatment for obtaining valuable compounds from olive residues, including pomace and leaves [365,366]. Cara, et al [360] applied steam explosion as a preparatory process for the use of olive residues, mainly olive wood as substrate for enzymatic hydrolysis. Furthermore, it was described that olive pomace treated with steam explosion is a good source of fermentable sugars [367].…”

Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

See 2 more Smart Citations

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Fritsch

Stäbler

Happel³

et al. 2017

Sustainability

157

102

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Abstract:The vast and ever-growing amount of agricultural and food wastes has become a major concern throughout the whole world. Therefore, strategies for their processing and value-added reuse are needed to enable a sustainable utilization of feedstocks and reduce the environmental burden. By-products of potato, tomato, cereals and olive arise in significant amounts in European countries and are consequently of high relevance. Due to their composition with various beneficial ingredients, the waste products can be valorized by different techniques leading to economic and environmental advantages. This paper focuses on the waste generation during industrial processing of potato, tomato, cereals and olives within the European Union and reviews state-of-the-art technologies for their valorization. Furthermore, current applications, future perspectives and challenges are discussed.

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Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

Section: Pretreatment Of Olive Pomace and Leavesmentioning

confidence: 99%

See 1 more Smart Citation

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Fritsch

Stäbler

Happel³

et al. 2017

Sustainability

157

102

View full text Add to dashboard Cite

show abstract

“…Among them are steam explosion [6], ammonia fibre explosion [7], organasolv [8], ozonolysis [9]. On the other hand, several of these pretreatments are not operational enough in the decreasing of the lignin content and some inhibitor compounds of yeast fermentation are formed through the hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Bioethanol production from sodium hydroxide – dilute sulfuric acid pretreatment of rice husk via simultaneous saccharification and fermentation

2017

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Abstract. Degradation of lignin from lignocellulosic biomass plays a main key role in converting of lignocelluloses to bioethanol. The pretreatment of lignocelluloses is needed to enhance the fermentable sugars production from enzymatic hydrolysis. This research studied the effect of dilute sulfuric acid pretreatment on the ethanol production using alkaline-dilute acid pretreatment. This research used two stages of the pretreatment process. The first stage used NaOH solution with ratio of rice husk and NaOH solution (1:10 w/v). On the second stage, five concentrations of sulfuric acid of 1 to 5% at temperature of 121 o C and various heating times (30-90 min) were investigated. The ethanol production from pretreated rice husk was conducted by the simultaneous saccharification and fermentation (SSF) for various SSF times of 72-160 hr. The experimental results indicated that an increase in concentration of sulfuric acid capable to destroy the lignocellulosic structure of rice husk. The highest value of cellulose content was achieved about 88.84 % for acid pretreated material at H 2 SO 4 concentration of 2% in 90 minutes. The lignin reduction ranged from 47.46% to 79.29%. The highest ethanol concentration obtained was 13.68 g/L for the SSF time of 120 hours and the sulfuric acid concentration of 3 %.

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“…Hydrothermal explosion is initiated at a temperature of 152-173°C (corresponding pressure 5 -7.5 bar) for 45 minutes before the material is exposed to atmospheric pressure. The explosion also results in substantial breakdown of the lignocellulosic structure along with hydrolysis of the hemicellulosic fraction and depolymerization of the lignin components [6]. Exploded biomass was characterized to study its chemical and morphological properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrothermal Explosion Pretreatment on the Composition and Structure of Calliandra Calothyrsus Shrub – a Lignocellulosic Biomass

Adaganti¹

2014

IJRSE

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Biomass has been pretreated by hydrothermal explosion using different experimental conditions of temperature between 135 and 173°C and operating time of 45 minutes. The effects of hydrothermal explosion conditions have been investigated by measuring chemical compositions (cellulose, hemicelluloses and lignin) in Calliandra calothyrsus. Hydrothermal explosion pretreatment removes the major part of the hemicelluloses, and makes the high cellulose in the solid material for further enzyme hydrolysis. At severity factor of (log Ro) 3.82 (173 o C, 7.5 bar, 45 min), the biomass fibers contained the significant lowest hemicelluloses and the highest of celluloses at 4.82 % DW and 58.26 % DW, respectively. Since Calliandra calothyrsus has higher lignin content, lignin structure might be resisting hemicelluloses degradation by hydrothermal explosion pretreatment. Therefore, hydrothermal explosion of lignocellulosic materials to remove hemicelluloses might significantly enhance the efficiency of cellulose hydrolysis.

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Enhanced enzymatic hydrolysis of olive tree wood by steam explosion and alkaline peroxide delignification

Cited by 260 publications

References 24 publications

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Processing, Valorization and Application of Bio-Waste Derived Compounds from Potato, Tomato, Olive and Cereals: A Review

Bioethanol production from sodium hydroxide – dilute sulfuric acid pretreatment of rice husk via simultaneous saccharification and fermentation

Effect of Hydrothermal Explosion Pretreatment on the Composition and Structure of Calliandra Calothyrsus Shrub – a Lignocellulosic Biomass

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