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Valorization of SCG through Extraction of Phenolic Compounds and Synthesis of New Biosorbent

Author

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  • Nikoletta Solomakou

    (Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 54124 Thessaloniki, Greece)

  • Panagiota Tsafrakidou

    (Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 54124 Thessaloniki, Greece)

  • Athanasia M. Goula

    (Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 54124 Thessaloniki, Greece)

Abstract

Coffee is considered to be one of the most renowned beverages and it is the second-most consumed product worldwide. Spent coffee grounds (SCGs) are the primary solid residue, which are generated during the coffee powder brewing in hot water or steam. The formation of huge amounts of these byproducts poses a severe threat to the environment, due to their organic nature and their high phenolic compounds concentration. Nevertheless, the latter are characterized as bioactive compounds with high antioxidant activity turning SCG into an economical raw matrix for the isolation of valuable components. Phenolic compounds that can be isolated from coffee byproducts can be potentially used as natural antioxidants in food, pharmaceutical, and cosmetics industries. Thus, the research community has focused its efforts on the optimization of phenolics extraction by the development of novel environmentally friendly techniques except for conventional maceration extraction using organic solvents. The objective of this review is to present an inclusive summary of the revalorization of SCGs and the potential uses of those solid residues through the recovery of phenolic compounds or the use of untreated or treated SCGs as biosorbents of valuable compounds from other food industry byproducts.

Suggested Citation

  • Nikoletta Solomakou & Panagiota Tsafrakidou & Athanasia M. Goula, 2022. "Valorization of SCG through Extraction of Phenolic Compounds and Synthesis of New Biosorbent," Sustainability, MDPI, vol. 14(15), pages 1-23, July.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:15:p:9358-:d:876411
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    References listed on IDEAS

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    1. Sun, Jing & Wang, Wenlong & Yue, Qinyan & Ma, Chunyuan & Zhang, Junsong & Zhao, Xiqiang & Song, Zhanlong, 2016. "Review on microwave–metal discharges and their applications in energy and industrial processes," Applied Energy, Elsevier, vol. 175(C), pages 141-157.
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    Cited by:

    1. Valentína Kafková & Róbert Kubinec & Jozef Mikulec & Miroslav Variny & Petra Ondrejíčková & Aleš Ház & Adriana Brisudová, 2023. "Integrated Approach to Spent Coffee Grounds Valorization in Biodiesel Biorefinery," Sustainability, MDPI, vol. 15(7), pages 1-17, March.
    2. Shu Lun Mak & Ming Yan Tanya Wu & Wai Ying Chak & Wang Kei Kwong & Wai Fan Tang & Chi Ho Li & Chi Chung Lee & Chun Yin Li, 2023. "A Review of the Feasibility of Producing Polylactic Acid (PLA) Polymers Using Spent Coffee Ground," Sustainability, MDPI, vol. 15(18), pages 1-17, September.

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