Peppermint oil in the main component for the levo-menthol, the content of 62,3%-87.2%, but also contains levo-menthol ketone isomenthol ketone, hu menthyl ketone, decyl acetate, menthol acetate benzoic acid methyl ester, α- and β-pinene, β-sidene, 3-pentanol, 2-has been alcohol, 3-octanol, dextro-laureth, limonene and eucalyptus, α-pinoxin and so on.
2 Choleretic effect
Can significantly increase the bile secretion, has obvious choleretic effect. Chen Guangliang, et al. Peppermint oil via the rat duodenum feeding, 1 ~ 2 hours to promote bile secretion effect is most obvious. Compared with the pre-administration, bile acid discharge in the bile was mildly increased, cholesterol content was reduced, and the content of bile pigment did not change significantly, indicating that peppermint oil has a significant choleretic effect and can increase the discharge of bile acid in the bile.
3 lithotripsy
can reduce the concentration of cholesterol, is conducive to the prevention and treatment of cholesterol stones. Leuschner et al. test found that menthol can effectively improve the efficiency of 10-12mm gallstones completely dissolved (increased by 15%).
4 Anti-inflammatory and analgesic effects
L-menthol (i.e., menthol) has an opioid-like effect on the central nervous system, which can make pain sensations disappear. Further studies have shown that menthol can achieve analgesic and sedative effects by modulating gamma-aminobutyric acid (GABA) and glycine receptors in the mammalian nervous system. And menthol is a stereoselective modulator of such inhibitory ion channels. Therefore, peppermint oil has considerable anti-inflammatory and analgesic effects.