Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/99473
Type of publication: Tezės kituose recenzuojamuose leidiniuose (T1e);Theses in other peer-reviewed publications (T1e)
Field of Science: Biochemija (N004);Biochemistry (N004)
Author(s): Dūdėnas, Mantas;Stanius, Žydrūnas;Kaškonienė, Vilma;Maruška, Audrius;Ragažinskienė, Ona;Obelevičius, Kęstutis
Title: The influence of various organic solvents and their concentrations for the extraction efficiency of phenolic compounds from Hop (Humulus lupulus L.) leaves and cones
Is part of: Vital nature sign [electronic resource] : 13th international scientific conference, May 16-17, 2019, Kaunas, Lithuania : abstract book / editors Nicola Tiso, Vilma Kaškonienė. Kaunas : Vytautas Magnus university, 2019, [no. 13]
Extent: p. 90-90
Date: 2019
Keywords: Phenolic compounds;Humulus lupulus;Organic solvent extraction;Spectrophotometry
Abstract: The medicinal properties of hop (Humulus lupulus L.) have been known for a very long time. However, this plant, which is extensively used in brewery, have recently gained a lot of attention, because hops contain compounds which have antibacterial, antioxidant and even anticancer properties [1]. Usually methanol is the most frequently used solvent for the extraction of biologically active compounds of hops [2]. However, other solvents are sometimes used [3]. The studies of biologically active compounds of hops would probably allow to discover new applications of hop harvest while the use of most effective solvent would allow to exploit the harvest in the most efficient way. The aim of this study was to analyze the influence of various organic solvents and their concentration for extraction efficiency of biologically active compounds from hops. To our knowledge it is the first study about the influence of different solvents for the extraction efficiency of phenolic compounds from Lithuanian hops. The concentration of phenolic compounds and flavonoids was analyzed using spectrophotometric methods [4]. The results were expressed as rutin equivalents mg/g of plant (mg RE/g). The analysis has shown that the highest concentration of phenolic compounds from leaves of hops was extracted using 25 % acetone solution as a solvent (92.55 mg RE/g) whereas the lowest extraction efficiency was achieved using pure acetonitrile (1.84 mg RE/g). In contrast, the highest extraction efficiency of flavonoids was achieved using 25 % N,N-dimethylformamide solution in water (25.75 mg RE/g) however the lowest amount of flavonoids was extracted using pure acetonitrile (2.03 mg RE/g). The highest amount of phenolic compounds from cones of hops was extracted using 75 % N,N-dimethylformamide solution in water (118.09 mg RE/g) while the lowest extraction efficiency was achieved using pure acetonitrile (13.45 mg RE/g). [...]
Internet: http://vns.microsep.org/wp-content/uploads/2019/05/Abstract-book_2019.pdf
https://hdl.handle.net/20.500.12259/99473
Affiliation(s): Biochemijos katedra
Botanikos sodas
Gamtos mokslų fakultetas
Vaistinių ir prieskon. augalų kol. Sektorius
Vytauto Didžiojo universitetas
Floros sistematikos grupė
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

Show full item record

Page view(s)

24
checked on Aug 17, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.