Butyrylcholinesterase (BChE) is a major enzyme from the alpha-glycoprotein family that
catalyzes the hydrolysis of neurotransmitter acetylcholine (ACh), lowering the concentration of
ACh in the nervous system, which could cause aggravation of Alzheimer’s disease (AD). In select
pathological conditions, it is beneficial to reduce the activity of this enzyme. The aim of this study
was to evaluate the degree of BChE inhibition by coffee extracts fractionated into mono- and diesters
of caffeic acid/caffeine, digested in vitro in the gastrointestinal tract. The bioactive compounds from
coffee showed high affinity for BchE, −30.23–−15.28 kJ/mol, and was the highest for the caffeine
fraction from the green Arabica extract. The isolated fractions were highly effective in inhibiting BChE
activity at all in vitro digestion phases. It has been shown that the fractionation of coffee extracts
could be potentially used to obtain high prophylactic or even therapeutic effectiveness against AD.