Configuration of stereoisomers of naringenin 5-glucoside present in flamin

Tyukavkina, M. A.; Dem'yanovich, V. M.; Kolesnik, Yu. A.; Ruchkin, V. E.; Rulenko, I. A.; Литвиненко, В. И.

doi:10.1007/bf00598401

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…Antioxidants are currently obligatory components of many products of the food and pharmaceutical industries and are used to enrich the vitamin composition of products and to preserve the quality of easily oxidized fatty components [1]. The use of antioxidants in these industries is strictly regulated by All-Union State Standards (GOST) and Sanitary Regulations and Standards (SanPin) requirements [2,3] which approve the use of both synthetic (butylhydroxyanisol, butylhydroxytoluene) and natural (tocopherols, quercetin) substances.…”

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confidence: 99%

Effects of ultrasound on the extraction of antioxidants from bearberry (Arctostaphylos adans) leaves

et al. 2008

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The effects of ultrasound (f = 60 kHz) on the quantity of biologically active substances extracted from bearberry leaves into a water:ethanol (1:1) mixture were studied, along with their antioxidant properties. The optimal conditions for extract preparation were identified: the raw material:extractant ratio and the duration of ultrasound exposure. Positive and negative aspects of the ultrasound extraction of antioxidants are discussed. The antioxidant activity of the extract prepared in optimum conditions was greater than that of a bearberry leaf extract prepared without ultrasound, increasing the resistance of sunflower oil to oxidation by factors of 2 -2.2. 593 0091-150X/08/4210-0593

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confidence: 99%

Effects of ultrasound on the extraction of antioxidants from bearberry (Arctostaphylos adans) leaves

et al. 2008

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“…The detected capacity of taxifolin (dihydroquercetin) to promote fibril formation and stabilize collagen fibrils clears out some aspects of biological activity of this substance [1,2] and opens new prospects for its use in various spheres of medicine, cosmetology, and food industry. 4).…”

Section: Resultsmentioning

confidence: 98%

Acceleration of fibril formation and thermal stabilization of collagen fibrils in the presence of taxifolin (dihydroquercetin)

Tarahovsky

Селезнева

Vasilieva³

et al. 2007

Bull Exp Biol Med

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We studied the effect of flavonoid taxifolin (dihydriquercetin) on the structure and thermal stability of collagen I fibrils. Taxifolin accelerated fibril formation with reconstruction of periodical cross-striation characteristic of these fibrils. Differential scanning calorimetry showed elevation of melting temperature of collagen fibrils formed in neutral or weakly alkaline media, but not of individual tropocollagen molecules in acid medium. Taxifolin capacity to stimulate fibril formation and promote stabilization of fibrillar forms of collagen can be used in medicine.

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“…36 As compound 5 exhibited a negative Cotton effect at 290 nm while 6 displayed a positive Cotton effect, the structures 5 and 6 could be established as (2S)-and as (2R)-naringenin-6-C-β-D-glucopyranoside, respectively. 37,38 Conclusions This is the first report of phytochemical study of…”

Section: Introductionmentioning

confidence: 84%

A New Isoflavone and Other Constituents from Roots of Clitoria guianensis

Cunha¹,

Siebeneichler²,

Nascimento³

et al. 2020

J. Braz. Chem. Soc.

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A new isoflavone named pratensein-7-O-β-D-rutinoside [(−)-7-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranosyl-5,3'-dihydroxy-4'-methoxyisoflavone] and the known compounds biochanin A-7-O-β-D-rutinoside, 6-deoxyclitoriacetal 11-O-β-D-glucopyranoside, 6-deoxyclitoriacetal, (2S)-naringenin-6-C-β-D-glucopyranoside, (2R)-naringenin-6-C-β-D-glucopyranoside, tachioside, and koaburaside were isolated from the roots of Clitoria guianensis (Aubl.) Benth var. guianensis (Fabaceae), a subshrub found in the Brazilian Cerrado biome. The structures of the compounds were identified by physical and spectroscopic data measurements (specific rotation ([α] D ), circular dichroism (CD), ultraviolet (UV), infrared (IR), 1D and 2D nuclear magnetic resonance (NMR), and mass spectrometry (MS)). The EtOAc fraction of the roots exhibited high toxicity against Artemia salina with median lethal dose (LD 50 ) value of 8.53 mg L −1 . Results and DiscussionClitoria guianensis was collected from Brazilian Cerrado biome and the roots were extracted with ethanol and further partitioned with Hex and EtOAc. The toxicity testing using brine shrimp (Artemia salina) of EtOH crude extract, Hex, and EtOAc fractions showed median lethal dose (LD 50 ) values of 23.44, 41.16, and 8.53 mg L −1 , respectively. The samples are considered highly toxic

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Configuration of stereoisomers of naringenin 5-glucoside present in flamin

Cited by 9 publications

References 6 publications

Effects of ultrasound on the extraction of antioxidants from bearberry (Arctostaphylos adans) leaves

Effects of ultrasound on the extraction of antioxidants from bearberry (Arctostaphylos adans) leaves

Acceleration of fibril formation and thermal stabilization of collagen fibrils in the presence of taxifolin (dihydroquercetin)

A New Isoflavone and Other Constituents from Roots of Clitoria guianensis

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