Relationship between polyphenols and antioxidation in larch pine cones and growing slope aspect.

An experiment was conducted to investigate the relationship between the polyphenol compound content and antioxidation ability in the larch pine cones at different growing slope aspects. We measured several samples of larch pine cones by spectrophotometry. The results showed that there were no significant relationships between the variety of polyphenol compound content and the antioxidation ability in different growing slope aspects (P 0.05). By correlation analysis, the total reducing power had higher correlativity with the contents of polyphenols (R2 = 0.786) and procyanidins (R2 = 0.899), respectively, while the 1,1-diphenyl-2-picrylhydrazy (DPPH) radical scavenging ability had weaker correlativity with them. Therefore, the growing slope aspect has not significant effect on the polyphenol compound content and the antioxidation ability.