Bioactive Activities of the Phenolic Extract from Sterile Bracts of .

Sterile bracts can represent 80% of pinecone and are a rich source of phenolic compounds. This study aimed to optimize the extraction of the phenolic compounds from bracts using response surface methodology; the bioactivity properties were also investigated. The effects of the ethanol concentration, solute/solvent ratio, and temperature in relation to the phenolic composition and antioxidant activity were evaluated.