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Finding use for spent grounds
Spent coffee grounds are rich in antioxidants, and different coffee brewing methods affect the levels, according to research in Journal of Agricultural and Food Chemistry.

The researchers analyzed the antioxidants in the main bioactive compounds (caffeoylquinic acid, caffeine, and browned compounds) found in spent coffee grounds obtained from coffee brewed using the most common coffeemakers (filter, espresso, plunger, and mocha). They learned that the coffee grounds …