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Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste

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Published on: July 18, 2025

Value-Added Products from Coffee Waste: A Review.

Yoon-Gyo Lee¹, Eun-Jin Cho¹, Shila Maskey¹

¹Bio-Energy Research Center, Chonnam National University, Gwangju 500-757, Republic of Korea.

Molecules (Basel, Switzerland)

|April 28, 2023

Summary

Coffee waste, including grounds and processing by-products, offers valuable compounds like lipids and biofuels. Sustainable management and valorization strategies can transform this waste into valuable resources, reducing environmental impact.

Keywords:

bio-oils bio-sugars bioactive compounds biopolymer coffee waste organic acids spent coffee grounds value-added products

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Area of Science:

Agricultural Science
Environmental Science
Biotechnology

Background:

Coffee production generates substantial waste, posing environmental and economic challenges.
Traditional disposal methods for coffee by-products are often unsustainable.
The potential for valorizing coffee waste remains largely untapped.

Purpose of the Study:

To review the diverse by-products generated throughout the coffee production lifecycle.
To explore the extraction and production of value-added compounds from coffee waste.
To discuss strategies for sustainable waste management and resource recovery in the coffee industry.

Main Methods:

Literature review of scientific publications on coffee waste valorization.
Analysis of chemical compounds present in various coffee by-products.
Examination of recycling, recovery, and energy valorization techniques.

Main Results:

Identified numerous valuable compounds in coffee waste, including lipids, lignin, cellulose, polyphenols, and caffeine.
Highlighted the potential for biofuel production from coffee by-products.
Detailed the utility of waste from cultivation (leaves, flowers), processing (pulp, husks), and post-consumption (spent coffee grounds).

Conclusions:

Coffee waste is a rich source of valuable compounds and can be transformed into high-value products.
Implementing clean technologies and integrated waste management strategies is crucial for sustainable coffee production.
Collaboration between researchers, industry, and policymakers is essential for the full utilization of coffee by-products.