Polyphenol oxidase (PPO) enzyme is of great commercial interest because it is related to the browning of fruits. In this practical spanning two weeks, we will use classical biochemical techniques to extract a PPO enzyme from a banana or apple, perform an assay for PPO activity and protein content, and assess data to discuss reproducibility in science.
Join researchers at the University of York on 14 September 2026 for Green Planet Day 2026, a one-day symposium celebrating the latest advances in plant and algal biology.
Protocol for experiment for lecturers
