Лекции Reviews, Lectures

Samara scientists have proposed a method for quan-

tifi cation of hawthorn blood-red leaves by differential 

spectrophotometry at 412 nm in terms of hyperoside with 

preliminary extraction of raw material with 70% ethyl 

alcohol [47].

A procedure for quantifi cation of 2”-O-rhamno-

side-vitexin, vitexin, isovitexine, rutin and hyperoside in 

hawthorn leaves is described by liquid chromatography 

with ultraviolet detection [48].

There is also methods for quantifi cation  of 

2“-O-glucoside vitexin, 2”-O-rhamnoside vitexin, rutin 

and hyperoside in hawthorn leaves by reversed-phase 

high-performance liquid chromatography with ultravio-

let detection [49].

A group of Chinese scientists has quantifi ed ten com-

ponents: vitexin-2”-ramnoside, vitexin-glucoside, vitex-

in, hyperoside, isoquercitrine, chlorogenic acid, eucomic 

acid, epicatechin, procyanidin B2 and C1 in the leaves of 

Chinese hawthorn (Crataegus pinnatifi da Bge.) by meth-

od of high-performance liquid chromatography [50].

CONCLUSION. Thus, our analysis and system-