Hydrothermal treatment and ethanol pulping of sunflower stalks

Caparrós, S.; Ariza, J.; López, Fátima; Nacimiento, J. A.; Garrote, Gil; Jiménez, L.

doi:10.1016/j.biortech.2007.01.045

Cited by 54 publications

(33 citation statements)

References 11 publications

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“…Lignin contents of four accessions of cultivated sunflower have been reported within the range of 24.0-34.6% (Ziebell et al, 2013). The carbohydrate contents were similar to those reported by Caparrós et al (2008) and Ruiz et al (2013), although lignin content of the sunflower stalks used in this study was much higher than that of their reports. Dissimilarities in the composition may be partially attributed to dissimilarities in growing location, season, harvesting methods, and analysis methods.…”

Section: Characterization Of Raw Materialssupporting

confidence: 85%

Enhanced biogas production from sunflower stalks using hydrothermal and organosolv pretreatment

Hesami

Zilouei

Karimi

et al. 2015

Industrial Crops and Products

102

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Section: Characterization Of Raw Materialssupporting

confidence: 85%

Enhanced biogas production from sunflower stalks using hydrothermal and organosolv pretreatment

Hesami

Zilouei

Karimi

et al. 2015

Industrial Crops and Products

102

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“…Table 2 summarises the pH and composition of the organosolv liquors. The sugars were mainly present in oligomeric form, similar to what has been reported for liquid fractions derived from hydrothermal pretreatment of biomass (Caparrós et al 2008;Ruiz et al 2008). The largest amount of oligomeric sugars was found in exp.…”

Section: Fractionation Efficiencysupporting

confidence: 60%

Organosolv pretreatment of olive tree biomass for fermentable sugars

et al. 2011

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Olive tree pruning biomass is one of the main agricultural residues available in Mediterranean countries and is currently lacking commercial applications. To take advantage of its sugar content, a pretreatment is necessary to enhance enzyme accessibility of the cellulose fraction of the residue. This paper describes for the first time the use of organosolv pretreatment in this regard. The main process variables such as pretreatment temperature, residence time, and solvent composition (aqueous ethanol) are studied. Results show that organosolv pretreatment causes delignification and hydrolysis of hemicelluloses and improves the enzymatic digestibility of olive tree pruning biomass. A higher pretreatment severity and ethanol content of the solvent were found to increase delignification (up to 64% at 66% w/w aqueous ethanol, 2108C, 60 min). By contrast, xylan hydrolysis was promoted by a lower ethanol content (maximum 92%). The highest enzymatic hydrolysis yield (90% of the structural glucan present in the raw material) has been obtained after pretreatment with 43% w/w aqueous ethanol at 2108C for 15 min. Organosolv pretreatment was found to be the most effective pretreatment for enzymatic hydrolysis of olive tree pruning biomass.

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“…Values were in the range of organosolv non-woody pulps [56][57][58][59] as can be seen in Table 3, where chemical composition of different non-woody pulps was included with the aim of comparison. Results obtained for soda pulping process revealed the stronger effect of the traditional pulping process on the fibres, as can be inferred from the higher holocellulose and ␣-cellulose percentages and lower lignin content.…”

Section: Pulp and Paper Characterizationmentioning

confidence: 99%