Study on chemical constituents and antioxidant activitise in vitro of volatile oil from loquat seed.

The volatile oil from loquat seed was extracted by means of steam distillation and its chemical components were analyzed by GC-MS and its antioxidant activities in vitro were evaluated by total reducing power, and scavenging capacity against ABTS •, sodium nitrite. The results showed that twenty compounds, which occupied 89. 69% of total constituents, were identified and the major components were benzaldehyde and benzoic acid. The antioxidant activities of 25% volatile oil from loquat seed were better than that of the positive control in a concentration-dependent fashion. Therefore, the volatile oil from loquat seed possessed excellent antioxidant activities. [ABSTRACT FROM AUTHOR]