Abstract. Purwoko T, Suranto, Setyaningsih R, Marliyana SD. 2023. Caffeine degradation by food microorganisms. Biodiversitas 24: 3495-3502. Commercial coffee beans are dominated robusta and arabica beans. is one of the important components in has antimicrobial effect. content was higher than affected species, cultivation's altitude postharvest processing method. Microbial fermentation activity ...