The invention relates to a method of preparing, separating and purifying
baicalein and
wogonin by endogenous
enzymatic hydrolysis of
baicalin and wogonoside in
scutellaria, and aims at providing a simple, safe, economical and high-efficient method of extracting, separating and purifying the high-purity
baicalein and
wogonin. An adopted technical scheme is that the
traditional Chinese medicine scutellaria is used as a
raw material, a unique endogenous
enzyme induction
bioconversion technology, a negative-pressure
cavitation extraction technology, a liquid-liquid extraction technique, a normal-phase silica-gel medium-and-low-pressure preparation liquid
chromatography technology, a low-temperature
crystallization and recrystallization technology and other high-efficient conversion, extraction, separation and purification technologies are used, and finally the high-purity
baicalein and
wogonin are obtained, wherein conversion rates of the
baicalin and the wogonoside can respectively reach 98.39 % and 98.16 %, contents of the target products: baicalein and wogonin are increased by 4.47 times and 2.85 times, and a purity can be more than 98 %. The method overcomes disadvantages of large damaging effects on the
baicalin and the wogonoside, low conversion rate and serious
pollution existing in prior art, has advantages of simple production process, safe and
environmental protection, high conversion rate and high target compound purity, and has a very important significance for development of medicines and health care products, and industrial production and application.