期刊
BIORESOURCE TECHNOLOGY
卷 209, 期 -, 页码 180-186出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.02.138
关键词
Supercritical 1,1,1,2-tetrafluoroethane; scR134a; Chitin; Lecanicillium lecanii; Chitinases
资金
- Secretaria de Ciencia, Tecnologia e Innovacion de la Ciudad de Mexico (SECITI) [PICSO12-152]
- Consejo Nacional de Ciencia y Tecnologia (CONACyT) [237292, 165757]
- CONACYT
The hydrolysis of chitin treated under supercritical conditions was successfully carried out using chitinases obtained by an optimized fermentation of the fungus Lecanicillium lecanii. The biopolymer was subjected to a pretreatment based on suspension in supercritical 1,1,1,2-tetrafluoroethane (scR134a), which possesses a critical temperature and pressure of 101 degrees C and 40 bar, respectively, followed by rapid depressurization to atmospheric pressure and further fibrillation. This methodology was compared to control untreated chitins and chitin subjected to steam explosion showing improved production of reducing sugars (0.18 mg/mL), enzymatic hydrolysis and high acetylation (F-A of 0.45) in products with degrees of polymerization between 2 and 5. (C) 2016 Elsevier Ltd. All rights reserved.
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