PROBLEM TO BE SOLVED: To provide a maillard reaction inhibitor having an excellent generation inhibition rate of pentosidine.SOLUTION: Provided is a maillard reaction inhibitor (particularly pentosidine generation inhibitor) comprising a carbonization material under reduced pressures, as an active ingredient, obtained by carbonizing a plant raw material under reduced pressures. The carbonization material under reduced pressures is particularly preferred to be obtained by carbonizing the plant raw material in conditions of desiccation or non-desiccation under the temperature conditions in a range from normal temperature to 350°C and reduced pressure conditions not more than 100 mmHg.
