Can coffee grounds be considered as a potential for green energy production?

Achkar, Jean H. El; Baydoun, Ali; Salameh, Dominique; Louka, Nicolas; Hobaika, Zeina; Maroun, Richard G.

doi:10.1109/redec.2018.8598105

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…As accumulated coffee grounds are known to be associated with diverse environmental issues, provoked by different substances including caffeine, phenols, tannins, and organic acids [3,4], handling them with an appropriate disposal method is essential. To that end, various approaches have been devised to utilize the waste, including the production of biomass, bioethanol, and fuel in industrial boilers [1,4,5].…”

Section: Introductionmentioning

confidence: 99%

Graphene Quantum Dots from Carbonized Coffee Bean Wastes for Biomedical Applications

et al. 2021

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Recent studies concerning graphene quantum dots (GQDs) focus extensively on their application in biomedicine, exploiting their modifiable optical properties and ability to complex with various molecules via π–π or covalent interactions. Among these nascent findings, the potential therapeutic efficacy of GQDs was reported against Parkinson’s disease, which has to date remained incurable. Herein, we present an environmentally friendly approach for synthesizing GQDs through a waste-to-treasure method, specifically from coffee waste to nanodrug. Consistent with the previous findings with carbon fiber-derived GQDs, the inhibitory effects of coffee bean-derived GQDs demonstrated similar effectiveness against abnormal α-synuclein fibrillation and the protection of neurons from relevant subcellular damages. The fact that a GQDs-based nanodrug can be prepared from a non-reusable yet edible source illustrates a potential approach to convert such waste materials into novel therapeutic agents with minimal psychological rejection by patients.

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