Analysis of useful substances from immature peach extracts obtained under different conditions and using them as functional materials

Abstract

Peaches are one of the most abundant cultivated fruits in Korea. There have been many studies on using it as functional materials; however, there has been few reports on immature peaches collected during the thinning out process. Herein we analyzed useful substances extracted under specific conditions from of thinned-out peaches and tested them for the suitability as cosmetic materials. NMR analysis revealed 3-O-cafffeoyl quinic acid as the major substance in the extracts. At PH-10, it showed positive response similar to ascorbic acid, used as a control, in antioxidant activity tests like DPPH and ABTS + radical scavenging tests. The elastase and collagenase inhibitory activity tests showed minor wrinkle improvements for all the test groups. No antibacterial response was observed for five germ groups. These results show that immature peaches are applicable as functional materials because the major constituent of its extracts (chlorogenic acid) can act as an antioxidant at high concentrations. It could be of benefit to study immature peach extracts in more detail to potentially reveal further value-adding properties.