Effect of protein during hydrothermal carbonization of brewer's spent grain

被引：36

作者：

Arauzo, P. J. ^{[1
]}

Du, L. ^{[1
]}

Olszewski, M. P. ^{[1
]}

Zavala, M. F. Meza ^{[1
]}

Alhnidi, M. J. ^{[1
]}

Kruse, A. ^{[1
]}

机构：

[1] Univ Hohenheim, Inst Agr Engn, Dept Convers Technol Biobased Resources, Garbenstr 9, D-70599 Stuttgart, Germany

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 293卷

关键词：

Hydrothermal carbonization; Brewer's spent grain; Insoluble protein-rich fraction; Amino acid profile; FUNCTIONAL-PROPERTIES; ENZYMATIC-HYDROLYSIS; BIOMASS; EXTRACTION; NITROGEN; PRECIPITATION; FRACTIONATION; CARBOHYDRATE; OPTIMIZATION; PRETREATMENT;

D O I：

10.1016/j.biortech.2019.122117

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study has two targets: Studying the extraction of the initial protein content from brewer's spent grain and the impact of protein's extraction on the chemical-physical properties of produced hydrochars. The protein was extracted from brewer's spent grains using the pH-shifting method. The extracted protein was quantified and characterized by their amino acid profile. The hydrothermal treatment was applied at 190 degrees C and 220 degrees C for 0.5 h, 1 h, 2 h, and 4 h. The hydrochars and process water were collected and assayed. The hydrochar after protein extraction reveals the lowest yield to hydrochars (67.10-45.14%), higher C/N ratio (19.66-21.33) and lower ash content (1.52-1.72 wt%) compared to the hydrochar without extraction.

引用

页数：9

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