Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production

被引：54

作者：

de Bomfim, Anne Shayene Campos ^{[1
]}

de Oliveira, Daniel Magalhaes ^{[1
]}

Voorwald, Herman Jacobus Cornelis ^{[1
]}

Benini, Kelly Cristina Coelho de Carvalho ^{[1
]}

Dumont, Marie-Josee ^{[2
]}

Rodrigue, Denis ^{[3
,4
]}

机构：

[1] UNESP Sao Paulo State Univ, Dept Mat & Technol, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Sao Paulo, Brazil

[2] McGill Univ, Bioresource Engn Dept, 21111 Lakeshore Rd, Ste Anne De Bellevue, PQ H9X 3V9, Canada

[3] Univ Laval, Dept Chem Engn, Quebec City, PQ G1V0A6, Canada

[4] Univ Laval, CERMA, Quebec City, PQ G1V0A6, Canada

来源：

POLYMERS | 2022年 / 14卷 / 03期

基金：

巴西圣保罗研究基金会; 英国科研创新办公室;

关键词：

spent coffee grounds; biopolymer precursors; polysaccharides; composites; RECYCLED POLYPROPYLENE COMPOSITES; AQUEOUS 2-PHASE EXTRACTION; HIGH-DENSITY POLYETHYLENE; LACTIC-ACID PRODUCTION; MECHANICAL-PROPERTIES; 2,3-BUTANEDIOL PRODUCTION; POLYURETHANE FOAMS; GREEN COMPOSITES; POLY(LACTIC ACID); POLYLACTIC ACID;

D O I：

10.3390/polym14030437

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Spent coffee grounds (SCG) are a current subject in many works since coffee is the second most consumed beverage worldwide; however, coffee generates a high amount of waste (SCG) and can cause environmental problems if not discarded properly. Therefore, several studies on SCG valorization have been published, highlighting its waste as a valuable resource for different applications, such as biofuel, energy, biopolymer precursors, and composite production. This review provides an overview of the works using SCG as biopolymer precursors and for polymer composite production. SCG are rich in carbohydrates, lipids, proteins, and minerals. In particular, carbohydrates (polysaccharides) can be extracted and fermented to synthesize lactic acid, succinic acid, or polyhydroxyalkanoate (PHA). On the other hand, it is possible to extract the coffee oil and to synthesize PHA from lipids. Moreover, SCG have been successfully used as a filler for composite production using different polymer matrices. The results show the reasonable mechanical, thermal, and rheological properties of SCG to support their applications, from food packaging to the automotive industry.

引用

页数：25

共 165 条

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