Improvement of vegetables elemental quality by espresso coffee residues
Food Chemistry（2014）
Abstract
•Spent coffee is used in domestic agriculture without sustained scientific evidences.•A pot-experiment was conducted with fresh and composted espresso spent coffee grounds.•Lettuces grown with fresh spent coffee had lower mineral amounts.•Composted spent coffee enriched lettuce mineral content when applied in small portions.
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Key words
Coffee by-products,Lettuce,Composting,Minerals,Macro-elements,Micro-elements
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