Remember Me
Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:

OpenAIRE is about to release its new face with lots of new content and services.
During September, you may notice downtime in services, while some functionalities (e.g. user registration, login, validation, claiming) will be temporarily disabled.
We apologize for the inconvenience, please stay tuned!
For further information please contact helpdesk[at]openaire.eu

fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Пунегов, Василий Витальевич; Костромин, Василий Иванович; Фомина, Марина Геннадьевна; Зайнуллин, Владимир Габдуллович; Юшкова, Елена Александровна; Белых, Дмитрий Владимирович; Чукичева, Ирина Юрьевна; Зайнуллин, Геннадий Габдуллович (2014)
Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: 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
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.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 1. Mandal V., Mohan Y., Hemalatha S. Pharmacognosy Reviews, 2007, vol. 1, no. 1, pp. 7-18.
    • 2. Portniagina N.V., Echishvili E.E., Punegov V.V., Mishurov V.P. Rastitel'nye resursy, 2009, vol. 45, no. 2, pp. 48-57. (in Russ.).
    • 3. http://www.sigmaaldrich.com/catalog/product/fluka/00190180
    • 4. http://www.sigmaaldrich.com/catalog/product/sigma/h9416
    • 5. Belikov V.V., Tochkova T.V., Shatunova L.V., Kolesnik N.T., Baiandina I.I. Rastitel'nye resursy, 1990, vol. 26, no. 4, pp. 541-578. (in Russ.).
    • 6. Abu-Samra A., Morris J.S., Koirtyohann S.R. Analytical Chemistry, 1975, vol. 47, pp. 1475-1477.
    • 7. Ganzler K., Bati J., Valko K. J. Chromatography, 1986, vol. 371, pp. 299-306.
    • 8. Agabalaev A.A., Karankevich E.G., Popova O.P., Kuvaeva Z.I. Izvestiia NAN Belarusi, seriia Khimicheskikh nauk, 2011, no. 4, pp. 40-42. (in Russ.).
    • 9. Sychev R.L., Punegov V.V. Novye dostizheniia v khimii i khimicheskoi tekhnologii rastitel'nogo syr'ia. [New advances in chemistry and chemical engineering plant materials.]. Barnaul, 2007, pp. 92-96. (in Russ.).
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article

Cookies make it easier for us to provide you with our services. With the usage of our services you permit us to use cookies.
More information Ok