Brewer's spent grain: Future biorefinery raw material

Katariina Kemppainen; Katariina Rommi; C. Gasser; M. Mucha; P. Corvini

Brewer's spent grain: Future biorefinery raw material

Katariina Kemppainen, Katariina Rommi, C. Gasser, M. Mucha, P. Corvini

VTT Technical Research Centre of Finland

University of Applied Sciences Northwestern Switzerland (FHNW)

Research output: Contribution to conference › Conference article › Professional

Abstract

Brewer's spent grain (BSG), an abundantly available side-stream from the brewing industry, was treated to extract lipids, hydrolyse carbohydrates to monosaccharides, isolate protein and depolymerize lignin to produce fractions valuable to the food, feed, fuel, and chemical industries. Steam explosion and organosolv cooking were found to improve the enzymatic digestibility of BSG carbohydrates from 30% to over 80% hydrolysis yield. The solids loading during the hydrolysis was shown to affect the hydrolysis yield, but promising results were reached even at 20% dry matter content. The treatment of the lignin-rich fraction with oxidative enzymes was found to lead into polymerization reactions suggesting that it would beneficiary to use radical scavengers and continuously separate low molecular weight compounds from the reaction medium.

Original language	English
Publication status	Published - 2014
MoE publication type	Not Eligible
Event	18th International Trade Fair of Material and Energy Recovery and Sustainable Development, Ecomondo 2014 - Rimini, Italy Duration: 5 Nov 2014 → 8 Nov 2014 Conference number: 18

Conference

Conference	18th International Trade Fair of Material and Energy Recovery and Sustainable Development, Ecomondo 2014
Abbreviated title	Ecomondo 2014
Country/Territory	Italy
City	Rimini
Period	5/11/14 → 8/11/14

Keywords

brewer's spent grain
fractionation
pretreatment
lignin depolymerization

Cite this

@conference{f0d9a5923335468cb089be6e61175acd,

title = "Brewer's spent grain: Future biorefinery raw material",

abstract = "Brewer's spent grain (BSG), an abundantly available side-stream from the brewing industry, was treated to extract lipids, hydrolyse carbohydrates to monosaccharides, isolate protein and depolymerize lignin to produce fractions valuable to the food, feed, fuel, and chemical industries. Steam explosion and organosolv cooking were found to improve the enzymatic digestibility of BSG carbohydrates from 30% to over 80% hydrolysis yield. The solids loading during the hydrolysis was shown to affect the hydrolysis yield, but promising results were reached even at 20% dry matter content. The treatment of the lignin-rich fraction with oxidative enzymes was found to lead into polymerization reactions suggesting that it would beneficiary to use radical scavengers and continuously separate low molecular weight compounds from the reaction medium.",

keywords = "brewer's spent grain, fractionation, pretreatment, lignin depolymerization",

author = "Katariina Kemppainen and Katariina Rommi and C. Gasser and M. Mucha and P. Corvini",

note = "Project code: 77179; 18th International Trade Fair of Material and Energy Recovery and Sustainable Development, Ecomondo 2014, Ecomondo 2014 ; Conference date: 05-11-2014 Through 08-11-2014",

year = "2014",

language = "English",

}

TY - CONF

T1 - Brewer's spent grain

T2 - 18th International Trade Fair of Material and Energy Recovery and Sustainable Development, Ecomondo 2014

AU - Kemppainen, Katariina

AU - Rommi, Katariina

AU - Gasser, C.

AU - Mucha, M.

AU - Corvini, P.

N1 - Conference code: 18

PY - 2014

Y1 - 2014

N2 - Brewer's spent grain (BSG), an abundantly available side-stream from the brewing industry, was treated to extract lipids, hydrolyse carbohydrates to monosaccharides, isolate protein and depolymerize lignin to produce fractions valuable to the food, feed, fuel, and chemical industries. Steam explosion and organosolv cooking were found to improve the enzymatic digestibility of BSG carbohydrates from 30% to over 80% hydrolysis yield. The solids loading during the hydrolysis was shown to affect the hydrolysis yield, but promising results were reached even at 20% dry matter content. The treatment of the lignin-rich fraction with oxidative enzymes was found to lead into polymerization reactions suggesting that it would beneficiary to use radical scavengers and continuously separate low molecular weight compounds from the reaction medium.

AB - Brewer's spent grain (BSG), an abundantly available side-stream from the brewing industry, was treated to extract lipids, hydrolyse carbohydrates to monosaccharides, isolate protein and depolymerize lignin to produce fractions valuable to the food, feed, fuel, and chemical industries. Steam explosion and organosolv cooking were found to improve the enzymatic digestibility of BSG carbohydrates from 30% to over 80% hydrolysis yield. The solids loading during the hydrolysis was shown to affect the hydrolysis yield, but promising results were reached even at 20% dry matter content. The treatment of the lignin-rich fraction with oxidative enzymes was found to lead into polymerization reactions suggesting that it would beneficiary to use radical scavengers and continuously separate low molecular weight compounds from the reaction medium.

KW - brewer's spent grain

KW - fractionation

KW - pretreatment

KW - lignin depolymerization

M3 - Conference article

Y2 - 5 November 2014 through 8 November 2014

ER -

Brewer's spent grain: Future biorefinery raw material

Abstract

Conference

Keywords

Fingerprint

Cite this