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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of high-intensity ultrasound application on the kinetics of sugar release from acid suspensions of artichoke (Cynara scolymus) biomass

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Author(s):
Carregari Polachini, Tiago [1, 2] ; Mulet, Antonio [2] ; Telis-Romero, Javier [1] ; Carcel, Juan A. [2]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ UNESP, Food Engn & Technol Dept, Inst Biosci Humanities & Exact Sci IBILCE, Campus Sao Jose De Rio Preto, BR-15054000 Sao Jose De Rio Preto, SP - Brazil
[2] Univ Politecn Valencia, Food Technol Dept, Grp Anal & Simulat Agrofood Proc, Camino Vera S-N, Valencia 46071 - Spain
Total Affiliations: 2
Document type: Journal article
Source: CHEMICAL ENGINEERING AND PROCESSING; v. 145, NOV 2019.
Web of Science Citations: 0
Abstract

The study of sugar release kinetics is an essential step prior to developing new technologies for applying in the bioethanol industry. To this end, the kinetics of reducing and total sugar release (extraction/hydrolysis) from artichoke waste were obtained in different conditions to evaluate the solubility of free sugars from raw matter and the hydrolysis of larger chain molecules separately. Thus, experiments of extraction with water (WE), hydrolysis (HY) in acid solutions and a conventional industrial hydrolysis (IHY), which combines dissolution and hydrolysis effects, were carried out. All of the treatments were studied with ultrasound application (US) or with conventional agitation (AG). Compared to AG experiments, US application accelerated the sugar dissolution reducing 50% the time to reach the equilibrium. The decrease in the biomass concentration in the suspensions increased the US effects in HY experiments. In IHY experiments, US was also able to enhance the final yield of sugars achieving relative reducing sugar and total sugar amounts 213% and 175%, significantly higher than AG experiments. The Theological changes in the suspensions during treatments can explain the different magnitude of ultrasound effects. The acoustic field characterization and the measurement of viscosity in the acid suspensions agreed with these results. (AU)

FAPESP's process: 17/06518-2 - Hydrolysis of cassava bagasse assisted by high-intensity ultrasound: acidic saccharification of residual starch with posterior enzymatic treatment of lignocellulosic biomass
Grantee:Javier Telis Romero
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants