why does the cut surface of brinjal turn brown? Share with your friends Share 0 Akanksha answered this Kindly refer to the following link:https://www.meritnation.com/ask-answer/question/what-cause-browing-of-the-exposed-of-cut-brinjal/physical-and-chemical-changes/1241539 2 View Full Answer Piyush Koul answered this The cut surfaces of the brinjal turn brown because the diffrent compound of the brinjal reacts with the oxygen and forms a brown pigment called malanin. 2