Valorization of spent coffee grounds: A review

被引：196
作者：
Kovalcik, Adriana [1 ]
Obruca, Stanislav [1 ]
Marova, Ivana [1 ,2 ]
机构：
[1] Brno Univ Technol, Fac Chem, Dept Food Chem & Biotechnol, Purkynova 118, Brno 61200, Czech Republic
[2] Brno Univ Technol, Fac Chem, Mat Res Ctr, Purkynova 118, Brno 61200, Czech Republic
来源：
FOOD AND BIOPRODUCTS PROCESSING | 2018年 / 110卷
基金：
欧盟地平线“2020”;
关键词：
Biorefinery; Biotechnology; Detoxification; Food; Polyhydroxyalkanoates; Spent coffee grounds; SUPERCRITICAL-FLUID EXTRACTION; ANTIOXIDANT PHENOLIC-COMPOUNDS; EXHAUSTED COFFEE; PHA PRODUCTION; POLYHYDROXYBUTYRATE PRODUCTION; CHEMICAL-CHARACTERIZATION; ENZYMATIC-HYDROLYSIS; RICH HYDROLYSATE; VALUABLE SOURCE; CARBON SOURCE;
D O I：
10.1016/j.fbp.2018.05.002
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Spent coffee grounds (SCGs) arise as waste products through the production of instant coffee and coffee brewing. This work reviews the composition of SCGs, the methods used for the isolation of individual compounds present in SCGs, the ways of utilizing SCGs presented in the literature so far, including use of SCGs' bioactive compounds, carbohydrates, oil fraction, as well as SCGs as the whole composite without treatment or with some physical and chemical modifications. However, this work mainly focuses on biotechnological processing of SCG hydrolysates and the reason why the fermentable sugars present in SCG hydrolysates cannot support sufficiently the growth of bacteria or yeasts. The reason is basically the presence of toxic co-contaminants, which have antibacterial properties. One suggestion for how to lower the presence of such co-contaminants in SCG hydrolysates is pre-extraction of them or the inclusion of a detoxification step. This review suggests that the fractionation of SCGs and detoxification of SCG hydrolysates might contribute to increased multiple utilization of this waste in many industrial sectors. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：104 / 119
页数：16
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