Physiological activities of Pyrus pyrifolia Nakai, malt, Ziziphus jujuba Mill., Leonurus japonicus Houtt., Scutellaria baicalensis, and their mixtures

Author:

Lee SooJungORCID,Kim HyunJunORCID,Chung Mi JaORCID

Abstract

This study investigated the anti-inflammatory, trypsin activity, and antioxidant effects of 11 kinds of plant extracts to discover materials for developing optimal mixtures that improve inflammation and help digestion. Ziziphus jujuba Mill. (ZJ), Leonurus japonicus Houtt. (LJ), Scutellaria baicalensis (SB), Platycodon grandiflorum, and Aster scaber extracts had excellent anti-inflammatory effects by reducing excessive nitric oxide (NO) and tumor necrosis factor-α content in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. The malt (MA), Pyrus pyrifolia Nakai (PP), Raphanus sativus L., Platycodon grandiflorum extracts among the 11 kinds of plant extracts had high trypsin activity. The antioxidant activity of the plant extracts was examined by the DPPH radical scavenging activity, and the SB, PE, JU, and MA extracts had high antioxidant activity. Therefore, PP, MA, ZJ, LJ, and SB were selected to develop optimal mixtures that improve inflammation and help digestion. The extract of plant mixture containing PP, MA, ZJ, LJ, and SB in the ratio 1:1:2:1:2 (w/w) significantly inhibited NO production than the extract of PP, MA, ZJ, LJ, and SB, respectively, in LPS-stimulated RAW 264.7 macrophages. The DPPH radical scavenging activity of the mixture extract was significantly higher than the extract of PP, MA, ZJ, and LJ, respectively.

Funder

Ministry of Education

Publisher

The Korean Society of Food Preservation

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