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Василий Витальевич Пунегов; Василий Иванович Костромин; Марина Геннадьевна Фомина; Владимир Габдуллович Зайнуллин; Елена Александровна Юшкова; Дмитрий Владимирович Белых; Ирина Юрьевна Чукичева; Геннадий Габдуллович Зайнуллин (2014)
Publisher: Altay State University
Journal: Himiâ Rastitelʹnogo Syrʹâ
Languages: Russian
Types: Article
Subjects: Chemistry, Q, Hypericum perforatum, hypericin, pseudohypericin, microwave assisted extraction, water duty, the composition of the extractant, spectrophotometry, Hypericum perforatum, гиперицин, псевдогиперицин, микроволновая экстракция, гидромодуль, состав экстрагента, спектрофотометрия, QD1-999, Science

The influence of the main parameters for extraction with microwave activation pigments (hypericin and pseudohypericin) of raw phytomass Hypericum perforatum were studied here. It was found that the maximal extraction of the pigments is achieved using 55% ethanol or isopropanol as extractants and liquor equal to 40 (power density of microwave radiation at a frequency of 0,0205 W/cm3 2450 MHz and duration of microwave 60 seconds). It was experimentally proved that the method of extracting the microwave activation of hypericin and pseudohypericin of Hypericum perforatum is a particular example of the intensification of mass transfer in a system of capillary porous body-liquid. Found that microwave activation method allows extraction of ten times to reduce the time necessary to fully extract of Hypericum perforatum pigments compared with the classical methods of extraction.

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