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Flavonoid isoflavones

A commercial database covers cinnamates, flavonoids, isoflavones, and lignans plus many nonphenolic plant constituents. Chapter 4 in this volume describes the development of a UK-focused database covering primarily anthocyanidins, flavanols, flavanones, flavones, and flavonols. [Pg.323]

In contrast to most other flavonoids, isoflavones are characterized by having the B-ring attached at C3 rather than the C2 position. They have a... [Pg.18]

Unlike other flavonoids, isoflavones are flavonoids with the B-ring attached at the C-3 position of the C-ring (Table 3.1). Isoflavones are present predominantly... [Pg.58]

Secondary compounds known for their antimicrobial activity include many phenolics (e.g., flavonoids, isoflavones, and simple phenolics), glu-cosinolates, nonproteinogenic amino acids, cyanogenic glycosides, acids, aldehydes, saponins, triterpenes, mono- and disesquiterpenes, and last but not least, alkaloids (4,17,42,149,312). [Pg.61]

Magiera, S., Uhlschmied, C., Rainer, M., Huck, C., Baranowska, I., Bonn, G. GC-MS method for the simultaneous determination of p-blockers, flavonoids, isoflavones and their metabolites in human urine. J. Pharm. Biomed. Anal. 56, 93-102 (2011)... [Pg.277]

Isoflavonoids are also compounds that should be bom in mind for future cytotoxic studies with flavonoids. Isoflavones (aglycones with a 2-3 double bound, a 4 oxo group and the B-ring at C3 position) with the association of substituents mentioned above are not studied and could be. Besides, rotenoids are very cytotoxic isoflavonoids that are not well studied although one of them, 12a 3-hydroxyamorphigenin, is the most cytotoxic flavonoid found in our review, with values of less than 0.001 pg/mL on the six human cancer cell lines tested by Li et a/. [78]. [Pg.928]

Flavonoids Isoflavones Genistein, daidzein Soy, peanuts, chick peas... [Pg.291]

DAY A, CANADA F J, DIAZ J C, KROON P A, MCLAUCHLAN R, FAULDS C B, PLUMB G W, MORGAN M R A and WILLIAMSON G (2000) Dietary flavonoid and isoflavone glycosides are hydrolyzed by the lactase site of lactase phlorizin hydrolase. FEES Lett 468, 166-70. [Pg.102]

Glycosides are the predominant forms. Although in humans flavonoids have been shown to be absorbed in their naturally occurring glycosidic forms (Hollman and Katan, 1998), isoflavones are not. It is generally accepted that to be adsorbed by enterocytes across the intestinal wall, isoflavone glycosides... [Pg.193]

Root flavonoids that may act as signals for the initiation and development of endomycorrhizal and ectomycorrhizal symbio.ses have been identified (see Chap. 7). Metabolites of the phenylpropanoid pathways apparently act as signaling molecules in endo- and ectomycorrhizal interactions (14). The role of flavonoids is still controversial, but a variety of flavanones, flavones, and isoflavones... [Pg.267]

In addition to the flavonoids with ring B attached to the C2 position of ring C, other types of flavonoids, particularly those with ring B attached to C3 (isoflavones), C4 (neoflavonoids), and open C ring (chalcones), have also been commonly found in fruits and vegetables. [Pg.138]

Figure 5.4. Abbreviated scheme for biosynthesis of major flavonoid subclasses, showing the primary enzymes and substrates leading to different subclasses. Bold-faced, uppercase abbreviations refer to enzyme names, whereas substrate names are presented in lowercase letters. PAL, phenylalanine ammonia lyase C4H, cinnamate 4-hydroxylase 4CL, 4-coumarate CoA ligase CHS, chalcone synthase CHI, chalcone isomerase CHR, chalcone reductase IPS, isoflavone synthase F3H, flavonone 3-hydroxylase F3 H, flavonoid 3 -hydroxylase F3 5 H, flavonoid 3 5 -hydroxylase FNSI/II, flavone synthase DFR, dihydroflavonol 4-reductase FLS, flavonol synthase ANS, anthocyanidin synthase LAR, leucoanthocyanidin reductase ANR, anthocyanidin reductase UFGT, UDP-glucose flavonoid 3-O-glucosyltransferase. R3 = H or OH. R5 = H or OH. Glc = glucose. Please refer to text for more information. Figure 5.4. Abbreviated scheme for biosynthesis of major flavonoid subclasses, showing the primary enzymes and substrates leading to different subclasses. Bold-faced, uppercase abbreviations refer to enzyme names, whereas substrate names are presented in lowercase letters. PAL, phenylalanine ammonia lyase C4H, cinnamate 4-hydroxylase 4CL, 4-coumarate CoA ligase CHS, chalcone synthase CHI, chalcone isomerase CHR, chalcone reductase IPS, isoflavone synthase F3H, flavonone 3-hydroxylase F3 H, flavonoid 3 -hydroxylase F3 5 H, flavonoid 3 5 -hydroxylase FNSI/II, flavone synthase DFR, dihydroflavonol 4-reductase FLS, flavonol synthase ANS, anthocyanidin synthase LAR, leucoanthocyanidin reductase ANR, anthocyanidin reductase UFGT, UDP-glucose flavonoid 3-O-glucosyltransferase. R3 = H or OH. R5 = H or OH. Glc = glucose. Please refer to text for more information.
Flavonoids are a complex group of polyphenolic compounds with a basic C6-C3-C6 structure that can be divided in different groups flavonols, flavones, flavanols (or flavan-3-ols), flavanones, anthocyanidins, and isoflavones. More than 6,000 flavonoids are known the most widespread are flavonols, such as quercetin flavones, such as lu-teolin and flavanols (flavan-3-ols), such as catechin. Anthocyanidins are also bioactive flavonoids they are water-soluble vegetable pigments found especially in berries and other red-blue fruits and vegetables. [Pg.156]


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See also in sourсe #XX -- [ Pg.70 ]

See also in sourсe #XX -- [ Pg.520 , Pg.521 , Pg.522 , Pg.525 , Pg.526 , Pg.527 ]

See also in sourсe #XX -- [ Pg.2 , Pg.5 , Pg.8 , Pg.9 , Pg.10 , Pg.15 , Pg.21 , Pg.23 , Pg.23 , Pg.25 , Pg.44 , Pg.44 , Pg.45 , Pg.45 , Pg.256 ]




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