1406-65-1 142M471B3J 2FZ7Y3VOQX 5QUO05548Z AOS Antioxidants CAT Carbon Dioxide Chlorophyll EAU EC 1.11.1.7 EC 4.3.1.24 Elaeis guineensis Enzymatic antioxidant system GR Journal Article PA PAL POD Palm Oil Peroxidase Phenylalanine Ammonia-Lyase Photosynthesis Plant Oils Polyamines Putrescine Research Support, Non-U.S. Gov't SOD Spermidine Spermine