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PDR for Herbal Medicines, Fourth Edition

Thomson Healthcare, Inc.
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Active principle is assumed to be one of the various flavonols such as quercetin-7-O-beta-D-xylopyra-noside or triterpenoids such as 7-baueren-3-acetate. The plant contains also adansonin. EFFECTS Febrifuge (malaria), astringent, anti-inflammatory, refreshing, perspiration-reducing, weakly hypotensive, mildly irritating, rich in vitamin C, strophantus-like effects, expectorant, diaphoretic, antiasthmatic. The plant is reported to produce Strophantus-like activities. Aqueous and alcoholic extracts of the leaves produced a slight drop in blood pressure after IV administration to dogs.

The Science of Flavonoids

Erich Grotewold
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This discovery provided the first indication that ANS/LDOX has a role in both anthocyanin and proanthocyanidin biosynthesis and offered an explanation for the difference in stereochemistry between 2,3-trans isomers for flavonols and anthocyanins, and 2,3-cis isomers for the proanthocyanidin extension units in most plants.
Another possibility is that the DFR enzymes in these plants have lost the ability to interact with other components of a flavonoid enzyme complex, so that only flavonols are synthesized in tissues where enzymes of the proanthocyanidin pathway, such as ANS/LDOX, ANR, or LAR, are not present. More work is needed on this interesting system to assess the specific role(s) of the DFR enzymes in these species and how the flavonoid and betalain pathways have evolved in the Caryophyllales. 3.3.
The activities differ in that the enzyme from Chrysosplenium americanum accepts methylated flavonols, while the Tagetes enzyme does not. These findings underscore the remarkable evolutionary plasticity of plant secondary metabolism and the potential to achieve similar ends through entirely unrelated means. It could be interesting to consider whether similar evolutionary processes may have occurred in other metabolic systems. Further evidence for the biochemical plasticity of the flavonoid pathway comes from analyses of the substrate and product specificities of FLS and DFR.
However, mass spectra of methylated flavonols, flavones, or isoflavones give good structural information about the corresponding isomers. The comparison of mass spectra of silylated and methylated isoflavones from extracts obtained from lupine roots was previously demonstrated (Stobiecki and Wojtaszek, 1990). It is possible to obtain additional information when CD3I is used for the methylation of flavonoids, where the placement of native methyl group on the aglycone can be established (Bednarek et al., 2001).

PDR for Herbal Medicines, Fourth Edition

Thomson Healthcare, Inc.
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Ingredients include heterosidic flavonols (0.5%), water (3% to 16%), protein (5.9% to 28.3%), all 22 amino acids (14.6 % to 21.9%), more than 25 minerals (especially calcium, magnesium, and zinc), rutin, enzymes, lipids or fatty acids (1% to 20%), carbohydrates (1% to 50%), simple sugars (4% to 10%), and vitamins (Leung et al 1996; Pedersen 1994; Kamen 1991; Murray 1991; de Graca Ribeiro Campos et al 1990; Guan et al 1984). Bee pollen has more amino acids and vitamins than other amino-acid-containing products like beef, eggs, or cheese.

The Science of Flavonoids

Erich Grotewold
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The 2S-flavanone is a critical intermediate for formation of several flavonoid classes whose biosynthesis branches at this point, including flavones, flavonols, flavan-4-ols, anthocyanins, and isoflavonoids, and enzymes that use flavanone as substrate (including flavanone 2-hydroxylase/licodione synthase, flavone synthase II, flavone synthase I, flavanone 3-hydroxylase, flavonoid 3'-hydroxylase, flavanone 4-reductase, and isoflavone synthase) have been shown to be highly stereospecific for the 25-enantiomer (Table 1.8).

Cancer & Natural Medicine: A Textbook of Basic Science and Clinical Research

John Boik
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Flavones and flavonols. Flavones and flavonols are the most widely occurring flavonoids. Although several hundred flavonol aglycones are known, only quercetin, kaempferol, and myricetin are widely distributed.5 The other known flavonols are structural variants on these three and occur in limited distribution. More than 135 different glycosides of quercetin have been isolated, the most common of which is rutin, a flavonol that has been used to treat capillary fragility. Flavones also occur as glycosides, but in a more limited fashion than flavonols.

In Defense of Food: An Eater's Manifesto

Michael Pollan
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Industry and media soon followed suit, and terms like polyunsaturated, cholesterol, monounsaturated, carbohydrate, fiber, polyphenols, amino acids, flavonols, carotenoids, antioxidants, probiotics, and phyto-chemicals soon colonized much of the cultural space previously occupied by the tangible material formerly known as food. The Age of Nutritionism had arrived. he term isn't mine.

101 Foods That Could Save Your Life!

David W. Grotto, RD, LDN
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Dietary intakes of flavonols, flavones and isoflavones by Japanese women and the inverse correlation between quercetin intake and plasma LDL cholesterol concentration. / Nutr. 2000 Sep;130(9):2243-2250. Chu YF, Sun J, Wu X, Liu RH. Antioxidant and antiproliferative activities of common vegetables. J Agric Food Chem. 2002 Nov 6;50(23):6910-6916. Craig WJ. Phytochemicals: Guardians of our health. / Am Diet Assoc. 1997;97: S199-S204. Dole Nutrition Institute. "Onions Boost Bone Health." 2005. Available at: www.dolenutrition.com. Accessed 5/18/06. Grant WB.
CANCER: Multiple studies have found that flavonoid compounds including anthocyanins, flavonols, and proanthocyanidins, found naturally in cranberries, may be able to fight leukemia, breast, lung, colon, and potentially many other types of cancer. HEART DISEASE: Flavonoids may also reduce the risk of atherosclerosis. The flavonoid and phenolic compounds in cranberries have been shown to reduce LDL ("bad") cholesterol, a known risk factor for atherosclerosis, while potentially raising protective HDL ("good") cholesterol.
Flavonoids found in chocolate include the flavonols, notably epicatechin, catechin, and proantho-cyanidins. It is also a rich source of the antioxidant theobromine. Many dark chocolate products with a high percentage (seventy percent) of cocoa contain more of these type of antioxidants, but that is not always a guarantee. Processing of cocoa can cause substantial losses so look for cocoa products that boast of its flavonol content. Cocoa also contains some caffeine.
DIABETES: A human study found that the flavonols in dark chocolate increased nitric oxide in the subjects tested, which improved insulin sensitivity and blood flow and lowered blood pressure. COUGHS: A team of researchers discovered that theobromine, a derivative found in cocoa, is nearly a third more effective in stopping persistent coughs when compared with codeine, currently considered the best cough medicine. The use of theobromine as a cough suppressant is still being investigated.

Nutrition in the Prevention and Treatment of Disease

Ann M. Coulston and Carol J. Boushey
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The quantitation of metabolites of quercetin flavonols in human urine. Cancer Epidemiol. Biomarkers Prev., 711-720. 17. Noroozi, M., Burns, J., Crozier, A., Kelly, I. E., and Lean, M. E. J. (2000). Prediction of dietary flavonol consumption from fasting plasma concentration or urinary excretion. Eur. J. Clin. Nutr. 54, 143-149. 18. Gasper, A. V., Al-Janobi, A., Smith, J. A., Bacon, J. R., Fortun, P., Atherton, C, Taylor, M. A., Hawkey, C. J., Barrett, D. A., and Mithen, R. F. (2005).

The 150 Healthiest Foods on Earth: The Surprising, Unbiased Truth About What You Should Eat and Why

Jonny Bowden, Ph.D., C.N.S.
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If you're interested, the specific flavonoids found in honey are fla-vanones, flavones, and flavonols.) Flavonoids are known for their antioxidant activity and are important for human health. And at least one study supports the folk wisdom of having some honey in a hot drink when you're sick: A study in the Journal of Medicinal Food suggested that honey may stimulate antibody production during primary and secondary immune responses. EVEN RAW HONEY DEMANDS PRECAUTION Now remember this—honey is still sugar. If you've got blood sugar issues, proceed with caution.

PDR for Herbal Medicines, Fourth Edition

Thomson Healthcare, Inc.
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Other Names: Ladies' Fingers, Lamb's Toes, Kidney Vetch, Staunchwort, Woundwort actions and pharmacology COMPOUNDS Tannins Saponins Flavonoids Isoflavonoids Lectins EFFECTS Antiviral activity has been demonstrated with an ethanol extract of the plant. The flavonols quercetin and rhamnetin have a mutagenic effect. The herb's use in the treatment of ulcers and wounds may be due to the tannins (probably of the catechin type). indications and usage Unproven Uses: Kidney Vetch tea is used in the treatment of ulcers and wounds both internally and externally.

Adaptogens: Herbs for Strength, Stamina, and Stress Relief

David Winston, RH(AHG), and Steven Maimes
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It also contains significant amounts of vitamin C as well as condensed tannins and flavonols. History/Ethnobotany According to Hindu legend, two goddesses, Lakshmi and Parvati, were on a pilgrimage. At the same time, each declared that they wanted to worship the greater gods in a new and unique way. They were so happy at this simultaneous desire that they cried tears of joy. From these tears grew the tree Amalaki. In modern Hindu practice, this tree is considered to be sacred to both Vishnu and Shiva, and regular use of it prolongs life, memory, and youthfulness.

Food Synergy: Unleash Hundreds of Powerful Healing Food Combinations to Fight Disease and Live Well

Elaine Magee
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The lab studies showed (continued on page 76) Flavonol-Rich Foods What three foods contain the most flavonols (the group of phytochemicals that includes quercetin, along with mycertin and kaempferol)? Why, it's onions, apples, and tea! For more on each of these powerful foods, turn to pages 86, 118, and 132. The flavonoids anthocyanin and proanthocyanidins provide color and antioxidant activity to many fruits and vegetables. Often, we can let our eyes guide us to the fruits and vegetables highest in flavonoids-the ones with the most color! You'll find them in these fruits and vegetables.

The Healing Power of Rainforest Herbs: A Guide to Understanding and Using Herbal Medicinals

Leslie Taylor, ND
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The main chemicals in this vine include coumarin, essential oils, flavonols, flavones, kaurenoic acid diterpenes, resins, saponins, and tannins. This particular species of Mikania was described by a Brazilian researcher at the University of Sao Paulo in the early 1970s.4-5 In the mid-eighties, other Brazilian researchers documented that an extract of cipo cabeludo had powerful molluscicidal effects (a lethal effect against adult snails) at only 10 ppm concentration.

Medical Herbalism: The Science Principles and Practices Of Herbal Medicine

David Hoffman, FNIMH, AHG
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These include anthocyanins and flavonols. Molecular Size This scheme differentiates among monomeric, dimeric, trimeric, and polmeric flavonoid structures. Conjugates Flavonoids normally exist in conjugate or combined forms, also known as glycosylflavonoids. These conjugates are commonly glycosides, in which a bond (-C-O-C-) is formed between a hydroxyl of the flavonoid and a sugar. The bond may be established with any of the hydroxyl groups on the aglycone, but the groups involved are generally the hydroxyls in the 7-position of the flavones and in the 3-position of the flavonols.

Cancer & Natural Medicine: A Textbook of Basic Science and Clinical Research

John Boik
See book keywords and concepts
Flavones and flavonols are the most widely occurring flavonoids. Although several hundred flavonol aglycones are known, only quercetin, kaempferol, and myricetin are widely distributed.5 The other known flavonols are structural variants on these three and occur in limited distribution. More than 135 different glycosides of quercetin have been isolated, the most common of which is rutin, a flavonol that has been used to treat capillary fragility. Flavones also occur as glycosides, but in a more limited fashion than flavonols.

The Science of Flavonoids

Erich Grotewold
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Each group of flavonoid compounds serves specific functions to the plant, under particular developmental or biotic/abiotic conditions. Thus, each branch of the pathway is under separate control, ensuring that the appropriate compounds are produced when and where required. 97 Figure 4.1 (A-D) Maize kernels showingphlobaphenes andanthocyanins. (A) Accumulation ofphlobaphenes in the pericarp under the control of the unstable Pl-vv allele and anthocyanins in the aleurone under CI and the unstable R-m3 allele. (B) Pl-vv with phlobaphenes in the pericarp.

The Natural Pharmacy: Complete A-Z Reference to Natural Treatments for Common Health Conditions

Alan R. Gaby, M.D., Jonathan V. Wright, M.D., Forrest Batz, Pharm.D. Rick Chester, RPh., N.D., DipLAc. George Constantine, R.Ph., Ph.D. Linnea D. Thompson, Pharm.D., N.D.
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One system breaks flavonoids into isoflavones, anthocyanidins, flavans, flavonols, flavones, and fla-vanones.1 Some of the best-known flavonoids, such as genistein in soy (page 587), and quercetin (page 580) in onions, can be considered subcategories of categories. Although they are all structurally related, their functions are different. Flavonoids also include hesperidin, rutin, citrus flavonoids, and a variety of other supplements.

The Healing Power of Rainforest Herbs: A Guide to Understanding and Using Herbal Medicinals

Leslie Taylor, ND
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Chemical screening has revealed that cipo cabeludo contains coumarin, sesquiterpenes, flavonols, saponins, and kaurenoic acid derivatives.1 These acid derivatives are chemicals that have been documented with various biological activities. Several of the known kaurenoic acids in cipo cabeludo (and other Mikania species) have demonstrated in vitro antibacterial properties against a broad range of bacteria in published research.

The Encyclopedia of Healing Foods

by Michael Murray, N.D. and Joseph Pizzorno, N.D.
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Flavonoid Content (as flavonols and Procyanidins) and Antioxidant Capacity of Chocolate and Other Foods and Beverages Flavanols and Procyanidins ORAC (milligrams) (mmol Trolox equivalents*) Darksemisweet chocolate, 3 ounces (100grams) 170 40.0 Milk chocolate, 3 ounces (100 grams) 70 6.7 Hot chocolate,! I cup 35 3.4 Apples, I medium 106 0.2 Red wine, A ounce 22 0.7 Brewed black tea, 2 bags 40 1.6 * Antioxidant activity is reported as oxygen radical absorbance capacity (ORAC) (water-soluble vitamin E) and expressed as mmol Trolox equivalents.

Anti-Aging Manual: The Encyclopedia of Natural Health

Joseph E. Mario
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Counter urinary infections with Proanthocyanidins and flavonols in Cranberries; neutralize free radicals with Pycnogenol/Pronogenol from Pine bark, or take advantage ofthe more active antioxidant Proanthocyanidin B2-3-0 Gallate from Grape seed extract.

The Healing Power of Rainforest Herbs: A Guide to Understanding and Using Herbal Medicinals

Leslie Taylor, ND
See book keywords and concepts
Initial screening has revealed it to contain steroids, saponins, phenols, flavonols, flavones, tannins, xanthones, and alkaloids. The anti-inflammatory properties of iporuru are attributed to a group of alkaloids, including one called alchorneine, which are found in the bark of iporuru as well as several other species of Alchornea} Likewise, there has been little clinical research on iporuru—despite its long history of use in South American herbal medicine. That which has been done, however, does help explain some of its traditional uses.
The main plant chemicals in pata de vaca include astragalin, bauhinoside, beta-sitosterol, flavonols, flavonoids, glycosides, guanidine, heteroglycosides, kaempferitrin, organic acids, quercitrosides, rhamnose, and saponins. Pata de vaca's ability to lower blood sugar was first reported by a Brazilian researcher in an in vivo 1929 clinical study, which was followed by another in vivo (dog) study in 1931,3-4 The same Brazilian researcher published another study in 1941, reporting the blood sugar-lowering effects of pata de vaca in humans, dogs, and rabbits.

Herbal Drugs and Phytopharmaceuticals: A Handbook for Practice on a Scientific Basis

Josef A. Brinckmann and Michael P. Lindenmaier
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In the fresh leaves, the polyphenols occur as genuine flavan-3-ols (catechins), partially esterified with gallic acid, and as dimeric proanthocyanidins, flavonols and flavonol glycosides; free phenolic carboxylic acids and depsides are also present. The oxidation reactions during the fermentation process generate reactive o-quinones which dimerize to chro-mophoric benzotropolone rings [2, 3], such as the (orange-red) theaflavines (about 2%), in addition to low amounts of theaflavinic acid, theaflagalins and bisflavonols.

Foods that Fight Cancer

Richard Beliveau, Ph.D. and Denis Gingras, Ph.D.
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It is this phytochemical content, in fact, that is responsible PRINCIPAL GROUPS OF PHYTOCHEMICALS FOUND IN FRUITS AND VEGETABLES Family Polyphenols Terpenes Sulfur compounds (sulfides) Saponins Flavonoids Phenolic acids Non-flavonoids —\ Carotenoids Monoterpenes Diallyl sulfides Isothiocyanates Triterpenoids Steroids Subclass Anthocyanidins Flavones Flavanols Flavanones flavonols Isoflavones Tanins Hydroxycinnamates Hydroxybenzoates Stibenes Coumarins Lignans Table 7 for the organoleptic properties that are so characteristic of these foods (bitterness, as-tringency, odour . . .

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