The distribution of phenolic acids in rice

Phenolic acids were quantified in three cultivars of fresh and aged rice. High levels of ferulic acid (255–362 mg kg−1 grain) and p-coumaric acid (70–152 mg kg−1 grain) were found in brown rice with lower levels (e.g. ferulic acid 61–84 mg kg−1 grain) in milled rice. Bound phenolic acids comprised 80–90% of the total phenolic acids for brown rice and 53–74% for milled rice. Storage led to a decrease in total and bound phenolic acid contents in both brown and milled rice and the decline was greater at 37 °C than at 4 °C storage.