Objective: To make an observation on the ultrastructure of periapical biofilm in chronic periapical periodontitis and to study bacteria in the biofilm in order to find out the species、 constitution and origination of bacteria in periapical biofilm.

Extraction and radical scavenging activities of resveratrol from peanut root;

Study on separation and purification of resveratrol from peanut root;

In order to improve comprehensive utilization of peanut and develop new materials for resveratrol, microwaveassisted extraction technology was applied to extract resveratrol from peanut root.

Objective:To isolate and identify a siderophores producing bacterium from the peanut rhizosphere.