Optimization of Methods of Quantitative Determining Flavanoids in Knotweed Raw Material

Таkibayeva, А.Т.; Кулаков, И. В.; Каpbassova, А.S.; Sydykova, D.M.; Rakhimberlinova, Zh.B.

doi:10.32014/2019.2518-1491.58

Cited by 2 publications

(2 citation statements)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fractions identical in composition were pooled and recrystallized [6,7]. The mixture was further chromatographed on a column at a ratio of the mass chromatographed fraction to the adsorbent of 1:20.…”

Section: Buds Of Balsam Poplarmentioning

confidence: 99%

Flavonoids of Populus Balsamifera Plants and Their Biological Activity

Таkibayeva

Amirchan

Kalkenova

et al. 2021

Series Chemistry and Technology

Self Cite

View full text Add to dashboard Cite

The work is devoted to the chemical studying of the composition of flavonoids of Populus balsamifera, the isolation of individual compounds, and the establishment of their structure. Balsamic poplar plants are a promising source of many biologically active substances, and in particular, flavonoids. From the buds of Populus balsamifera L. identified four flavonoids with antifungal, antimicrobial antioxidant properties and hepatoprotective activity. Data of flavonoids were isolated by extraction on the soxlet apparatus with 95% ethanol by triple thermal extraction at a temperature of 60 °C, followed by thickening on a rotary evaporator. For isolation from the buds of balsamic poplar, the resulting extract was chromatographed on a column with silica gel of the KSK brand 0.31-0.63 microns, using petroleum ether as eluents petroleum ether-ethyl acetate in various ratios and ethyl acetate. The structure of the isolated compounds was determined by IR, UV, NMR 13C, 1H spectroscopy. The biological activity of the isolated flavonoids was also studied.

show abstract

Section: Buds Of Balsam Poplarmentioning

confidence: 99%

Flavonoids of Populus Balsamifera Plants and Their Biological Activity

Таkibayeva

Amirchan

Kalkenova

et al. 2021

Series Chemistry and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The kinetics of the interaction of the surface of the burnt rock with potassium carbonate of different One of the promising directions for improving the quality of humic sorbents is the introduction of inorganic compounds into their composition [1][2][3][4][5][6][7][8][9][10]. This method will increase their sorption properties, while giving them mechanical strength, resistance to acid and alkaline hydrolysis.…”

mentioning

confidence: 99%

Chemical Activation of the Surface of the Burnt Rock by Various Modifiers

Rakhimberlinova¹,

Кулаков²,

Alimzhanova³

et al. 2021

News of NAN RK. SCTS

Self Cite

View full text Add to dashboard Cite

This article presents the results of experimental studies of the process of grafting humic acids and their functional derivatives on modified and unmodified surfaces of burnt rock. It is shown that the inoculation of humic acids on inorganic carriers is more successful with the preliminary activation of the surface of burnt rocks. The acidic and sorption properties of grafted surfaces of humic sorbents with respect to heavy metal ions have been studied. It is shown that many of the modifying additives on the surface of the inorganic carrier can increase these properties by 1.2-2.0 times in comparison with the original rock. Surface modification was carried out by means of impregnation with water solutions of the modifier and subsequent heat treatment; heating at boiling point in water solutions with subsequent heat treatment of precipitation. The interaction of modifiers with the surface occurs by the type of ion exchange for silanol or aluminol groups with weak acidity. It is also possible to connect via hydrogen bonds or dipole-dipole and induction interactions. It was found that the degree of grafting of humic compounds is significantly higher on the activated surfaces of the burnt rock. The content of the modifier on the surface of the carrier is 10-40%, depending on the experimental conditions and the nature of the modifier. The most active modifiers are sodium phosphate and potassium carbonate. The kinetics of the interaction of the surface of the burnt rock with potassium carbonate of different concentrations to reduce the specific electrical conductivity of the reaction mixture over time is studied. A comparative study of the sorption properties of grafted surfaces was carried out, depending on the nature of the functional groups of the humic component of the sorbent, the nature and concentration of the metal ion. The degree of sorption of metal ions with mineral carriers increases from 12-15% to 20-90%, depending on various factors. The highest sorbability of new huminomineral sorbents was noted for lead ions.

show abstract

Optimization of Methods of Quantitative Determining Flavanoids in Knotweed Raw Material

Cited by 2 publications

References 1 publication

Flavonoids of Populus Balsamifera Plants and Their Biological Activity

Flavonoids of Populus Balsamifera Plants and Their Biological Activity

Chemical Activation of the Surface of the Burnt Rock by Various Modifiers

Contact Info

Product

Resources

About