Abstract
The global surge in coffee consumption has led to the generation of significant amounts of spent coffee grounds (SCG), a by-product of the brewing process. If it is left unprocessed in the landfill, it will generate methane, one of the greenhouse gases, and therefore accelerate global warming. The intersection of SCG and its potential as a substrate for black soldier fly (BSF) larvae cultivation as one of the pathways for processing SCG becomes intriguing as we seek sustainable waste management solutions. The combination of both nutrition and toxic alkaloids (caffeine) makes SCG and/or other coffee parts intriguing for recycling (or upcycling) via BSF cultivation to generate insect protein. Due to its remarkable capacity to bioconvert organic waste into high-value proteins and fats, the black soldier fly, Hermetia illucens, has garnered attention in waste management and animal feed production. This comprehensive review sheds light on the recent development of using SCG as a substrate for BSF larvae.
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