Relationship between polyphenols and antioxidation in larch pine cones and altitude

The polyphenol compound content and antioxidation ability in the larch pine cones were determined at different altitudes, and their relationships with altitude were discussed. The results showed that polyphenol content, procyanidin content, total reducing power and DPPH radical scavenging ability at high altitude were significantly higher than those at lower altitude. The procyanidin content has significant correlation with polyphenol content (R2=0.949) and total reducing power (R2=0.899), respectively.