quercetin
4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-
 
Notes:
a flavonol widely distributed in plants. it is an antioxidant, like many other phenolic heterocyclic compounds. glycosylated forms include rutin and quercetrin. Isol. from many plants, esp. fruits, such as Helichrysum, Euphorbia and Karwinskia spp. Present in the Solanaceae, Rhamnaceae, Passifloraceae and many other families. For example detected in almost all studied Umbelliferae. Nutriceutical with antiinflammatory props. and a positive influence on the blood lipid profile. Found in a wide variety of foodstuffs esp. apples, bee pollen, blackcurrants, capers, cocoa, cranberries, dock leaves, elderberries, fennel, lovage, red onions, ancho peppers, dill weed and tarragon
  • Charkit Chemical
    • Charkit Chemical Corporation
      The Specialty Chemical Specialists
      Explore this website to discover the products and services that Charkit provides for your industry and please contact us directly to find out how we can be of service to you.
      Since 1982, Charkit has been committed to expanding the markets we serve and our roster of products and services continues to grow with us. Personal care ingredients now include a substantial array of luxury and exotic components. Substantial inroads have been made in the nutraceutical and resins markets, with a growing roster of versatile and unique ingredients. And we continue to lead the way in our traditional markets such as Metal and Water Treatment, Imaging, Flavor & Fragrance, Aroma and Food. Our Pharmaceutical offerings continue to expand, still anchored by the Boronic Derivatives that meet the demands of Suzuki coupling reactions.
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      QUERCETIN ANHYDROUS 99.5%
       
  • Jiangyin Healthway
    • Jiangyin Healthway International Trade Co.
      Independent Ingredients Supplier
      We provide custom synthesis and contract manufacturing from milligrams to metric tonnes.
      Jiangyin Healthway International Trade Co., Ltd is a professional company, main engaged in manufacturing and exporting aroma chemicals ,food additives , cosmetic ingredient ,pharmaceutical intermediates & other fine chemicals; especially on aroma chemicals , as the major manufacturer of heterocyclic and sulphur aroma compounds , we are the leading independent ingredients supplier to the flavour and fragrance industries in China, can offer hundreds of different high quality aroma chemicals.
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      Product(s):
      HL0332 Quercetin 95%
       
  • Penta International
    • Penta International Corporation
      Chemistry innovation
      At Penta, our products and services help businesses do business better.
      For over 30 years, Penta Manufacturing Company has played a growing role in worldwide chemistry innovations and applications. As an industry leader, Penta continues to pioneer chemistry-based solutions for practically every area of commerce. Our products and expertise have helped fuel technical advances in dozens of commercial applications including flavoring, coloring, fragrances and chemical processes.
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      Product(s):
      17-20100 QUERCETIN ANHYDROUS, Kosher
       
Synonyms   Articles   Notes   Search
2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one (Click)
CAS Number: 117-39-5Picture of molecule
Other: 73123-10-1
ECHA EINECS - REACH Pre-Reg: 204-187-1
FDA UNII: 9IKM0I5T1E
Nikkaji Web: J2.907F
Beilstein Number: 0317313
MDL: MFCD00006828
XlogP3: 1.50 (est)
Molecular Weight: 302.23910000
Formula: C15 H10 O7
BioActivity Summary: listing
NMR Predictor: Predict (works with chrome or firefox)
Category: food additive and cosmetic agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Google Patents: Search
US Patents: Search
EU Patents: Search
IBM Patents: Obtain
Obtain
Pubchem Patents: Search
PubMed: Search
NCBI: Search
 FDA/DG SANTE Petitions, Reviews, Notices:
GRN 341 P17 Quercetin View-notice PDF
GRN 341 P2 Quercetin View-notice PDF
GRN 341 P3 Quercetin View-notice PDF
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Physical Properties:
Appearance: yellow needles (est)
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 316.50 °C. @ 760.00 mm Hg
Boiling Point: 642.00 to  643.00 °C. @ 760.00 mm Hg (est)
Flash Point: 479.00 °F. TCC ( 248.10 °C. ) (est)
logP (o/w): 1.989 (est)
Soluble in:
 alcohol
 water, 60 mg/L @ 16C (exp)
Insoluble in:
 water
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Organoleptic Properties:
  
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Cosmetic Information:
CosIng: cosmetic data
Cosmetic Uses: antioxidants
skin conditioning
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Suppliers:
AIDP
Quercetin Dihydrate 95%
Amax Nutrasource
Quercetin, 95% Quercetin Dihydrate
AuNutra® Industries
Quercetin P.E.
BASF
Diminish the skin’s “orange peel” appearance with Flavenger™
Charkit Chemical
QUERCETIN ANHYDROUS 99.5%
Coompo
For experimental / research use only.
Quercetin from Plants ≥96%
Odor: characteristic
Use: Quercetin exerts many beneficial health effects, including improvement of cardiovascular health, reducing risk for cancer, protection against osteoporosis. This phytochemical has anti-inflammatory, anti-allergic and antitoxic effects. Most of these properties are linked to its strong antioxidant action of quercetin but quercetin also modulates the expression of specific enzymes. Quercetin induces apoptosis and influences protein and lipid kinase signaling pathways. Quercetin is a candidate for preventing obesity-related diseases. Quercetin may help to reduce symptoms of diabetes patients. One study showed that quercetin reduced blood glucose level and improved improved plasma insulin levels in streptozotocin-induced diabetic rats. An in-vitro study concluded that quercetin may have a pharmacological application in treating cardiovascular disease in diabetes mellitus patients. Quercetin shows anti-inflammatory action by its direct antioxidant action and inhibition of inflammatory mediators and enzymes, such as lipoxygenase. Quercetin also inhibits the release of histamine, which causes congestion, by basophils and mast cells. Studies have shown an improved lung function and lower risk of certain respiratory diseases (asthma and bronchitis) for people with high apple (rich in quercetin) intake. Patients with increased levels of inflammation and oxidative stress might benefit most from a quercetin supplementation. To investigate the effects of quercetin supplementation on incidence of upper respiratory tract infections and exercise-induced changes in immune function. Trained male cyclists were randomized to quercetin or placebo groups and, under double-blind procedures, received 3 weeks quercetin (1000 mg a day) or placebo before, during, and for 2 weeks after a 3-d period in which subjects cycled for 3 hours a day at approximately 57% Wmax. Quercetin versus placebo ingestion did not alter exercise-induced changes in several measures of immune function, but it significantly reduced upper respiratory tract infection incidence in cyclists during the 2-wk period after intensified exercise. Studies demonstrate that flavonoid-rich diets protect against myocardial infarction and stroke. As many other flavonoids, quercetin inhibits oxidation of LDL (bad) cholesterol, lowers blood pressure and reduces the risk of heart disease. Studies have shown that quercetin reduces cancer risk of prostate, ovary, breast, gastric and colon cells. Numerous in-vitro studies show that quercetin induces apoptosis of cancer cells through different mechanisms. Preliminary studies indicate that quercetin my inhibit the proliferation of androgen- independent human prostatic tumor cells. In rats, in combination with finasteride, it reduces prostate weight. Whether therapy alone benefits those with benign prostate hyperplasia is not clearly known at this time. Many flavonoids act as aromatase inhibitors. Quercetin supplementation has been linked with improved performance, but supporting evidence is week and often conflicting. Scientists suggest that quercetin may aid performance through its anti-inflammatory properties or by stimulating the activity of mitochondria.
Jiangyin Healthway
Quercetin 95%
New functional food ingredients
Maypro Industries
Quercetin
Penta International
QUERCETIN ANHYDROUS, Kosher
Qingdao Dacon Trading
Quercetin
Risun Ingredients
Quercetin 95%
Sinoway Industrial
For experimental / research use only.
Quercetin
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Safety Information:
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50  161 mg/kg
Reviews of Environmental Contamination and Toxicology. Vol. 113, Pg. 47, 1990.

intravenous-rabbit LD50  100 mg/kg
FAO Nutrition Meetings Report Series. Vol. 46A, Pg. 18, 1969.

oral-mouse LD50  159 mg/kg
BEHAVIORAL: MUSCLE WEAKNESS BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION
Proceedings of the Society for Experimental Biology and Medicine. Vol. 77, Pg. 269, 1951.

intravenous-mouse LD50  18 mg/kg
U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#02589

intraperitoneal-mouse LD50  3000 mg/kg
LUNGS, THORAX, OR RESPIRATION: DYSPNEA BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. Vol. 64, Pg. 186, 1968.

Dermal Toxicity:
subcutaneous-mouse LD50 97 mg/kg
LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: MUSCLE WEAKNESS
Proceedings of the Society for Experimental Biology and Medicine. Vol. 77, Pg. 269, 1951.

Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: food additive and cosmetic agents
Recommendation for quercetin usage levels up to:
 not for fragrance use.
 
Recommendation for quercetin flavor usage levels up to:
 not for flavor use.
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Safety References:
EPI System: View
ClinicalTrials.gov: search
NLM Hazardous Substances Data Bank: Search
Chemical Carcinogenesis Research Information System: Search
AIDS Citations: Search
Cancer Citations: Search
Toxicology Citations: Search
Carcinogenic Potency Database: Search
EPA GENetic TOXicology: Search
Env. Mutagen Info. Center: Search
NLM Developmental and Reproductive Toxicity: Search
EPA Substance Registry Services (TSCA): 117-39-5
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 5280343
National Institute of Allergy and Infectious Diseases: Data
WGK Germany: 3
 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
Chemidplus: 0000117395
EPA/NOAA CAMEO: hazardous materials
RTECS: LK8750000 for cas# 117-39-5
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References:
 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 117-39-5
Pubchem (cid): 5280343
Pubchem (sid): 135269910
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
CHEBI: View
CHEMBL: View
Golm Metabolome Database: Search
UM BBD: Search
KEGG (GenomeNet): C00389
HMDB (The Human Metabolome Database): HMDB05794
FooDB: FDB011904
YMDB (Yeast Metabolome Database): YMDB01777
MedlinePlusSupp: View
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
Formulations/Preparations:
•supplied as capsules & tablets •glycosylated forms include rutin and quercetrin •intravenous soln in ethanol or dmso ...
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
None Found
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Occurrence (nature, food, other): note
 almond plant
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 apple fruit
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 apple heart wood
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 apple pericarp
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 apricot fruit
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 apricot plant
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 arrowroot leaf
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 ashitaba
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 asparagus root
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 avocado leaf
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 banana fruit
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 banana plant
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 basil leaf
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 basswood flower
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 bay laurel leaf
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 bean mung bean sprout
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 beet plant
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 bilberry leaf
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 blueberry plant
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 borage plant
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 breadfruit leaf
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 broccoli asparagus broccoli leaf
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 brussel sprout sprout
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 buckthorn sea buckthorn fruit
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 buckwheat plant
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 buckwheat seed
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 buckwheat sprout
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 buckwheat testa
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 cabbage leaf
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 cacao leaf
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 caper flower
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 caraway flower
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 caraway leaf
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 caraway seed
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 carob bean
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 carrot seed
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 cayenne fruit
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 celery plant
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 chamomile sweet false chamomile plant
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 cherry sour cherry fruit
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 chestnut sweet chestnut bark
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 chestnut sweet chestnut leaf
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 chestnut sweet chestnut wood
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 chicory plant
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 chicory seed
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 chive leaf
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 clove fruit
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 coriander fruit
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 coriander leaf
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 coriander shoot
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 corn pollen
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 cotton plant
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 cranberry fruit
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 currant black currant fruit
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 currant black currant fruit juice
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 dandelion flower
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 date palm pollen
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 dill plant
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 elder black elder leaf
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 endive leaf
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 evening-primrose herb
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 evening-primrose leaf
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 fennel leaf
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 fennel seed
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 fenugreek flower
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 fenugreek leaf
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 fenugreek plant
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 fenugreek seed
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 fig plant
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 garlic bulb
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 ginger plant
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 ginkgo biloba biloba tissue culture
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 ginkgo biloba leaf
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 grape fruit
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 grape leaf
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 guava flower
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 guava fruit
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 guava heart wood
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 guava leaf
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 guava root
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 guava strawberry guava plant
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 hazelnut bark
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 horseradish leaf
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 kiwi plant
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 kohlrabi shoot
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 lemon flower
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 lemongrass plant
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 lettuce plant
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 loquat
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 loquat plant
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 lotus indian lotus flower
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 mango plant
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 marango flower
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 marango leaf
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 nutmeg plant
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 oat hay
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 okra flower
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 olive stem
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 onion
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 onion bulb
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 orange fruit
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 oregano leaf
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 oregano plant
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 parsley leaf
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 parsley plant
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 parsley tissue culture
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 parsnip leaf
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 peach plant
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 peanut plant
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 pear pericarp
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 pepper black pepper fruit
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 persimmon american persimmon plant
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 plum plant
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 pomegranate fruit
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 pomegranate leaf
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 pomegranate pericarp
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 pomegranate plant
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 potato flower
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 potato sweet potato root
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 raspberry red raspberry juice
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 rice
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 rose hips fruit
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 saffron flower
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 sorrel garden sorrel fruit
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 soybean shoot
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 spinach indian spinach plant
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 spinach leaf
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 sunflower flower
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 sunflower leaf
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 tarragon shoot
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 tea leaf
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 tea plant
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 tea shoot
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 tomato fruit
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 turmeric rhizome
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 walnut black walnut leaf
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 walnut english walnut leaf
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 wheat plant
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Synonyms:
4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-
 C.I. natural red 1
 C.I. natural yellow 10
 cyanidelonon 1522
 cyanidenolon 1522
3-(3,4-dichlorophenoxy)benzaldehyde
2-(3,4-dihydroxy-phenyl)-3,5,7-trihydroxy-chromen-4-one
2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one
2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one
2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one
 flavone, 3,4',5,5',7-pentahydroxy-
 natural yellow 10
3,3',4,5,7-pentahydroxyflavone
3,3',4',5,7-pentahydroxyflavone
3,5,7,3',4'-pentahydroxyflavone
 quercetine
 sophoretin
3',4',5,7-tetrahydroxyflavan-3-ol
3,5,7-trihydroxy-2-(3,4-dihydroxyphenyl)-4H-chromen-4-on
3,5,7-trihydroxy-2-(3,4-dihydroxyphenyl)-4H-chromen-4-one
 xanthaurine
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Articles:
PubMed: Simultaneous determination of caffeine and some selected polyphenols in Wuyi Rock tea by high-performance liquid chromatography.
PubMed: Metabolomic profiling and sensorial quality of 'Golden Delicious', 'Liberty', 'Santana', and 'Topaz' apples grown using organic and integrated production systems.
PubMed: Identification of tartary buckwheat tea aroma compounds with gas chromatography-mass spectrometry.
PubMed: On the formulation design and rheological evaluations of pectin-based functional gels.
PubMed: Insulin secretagogue, alpha-glucosidase and antioxidant activity of some selected spices in streptozotocin-induced diabetic rats.
PubMed: Atheroprotective and plaque-stabilizing effects of enzymatically modified isoquercitrin in atherogenic apoE-deficient mice.
PubMed: Identification and quantification of free radical scavengers in Pu-erh tea by HPLC-DAD-MS coupled online with 2,2'-Azinobis(3-ethylbenzthiazolinesulfonic acid) diammonium salt assay.
PubMed: Isolation and characterization of a novel glycosyltransferase that converts phloretin to phlorizin, a potent antioxidant in apple.
PubMed: Monosodium glutamate-induced oxidative damage and genotoxicity in the rat: modulatory role of vitamin C, vitamin E and quercetin.
PubMed: Influence of cooking process on phenolic marker compounds of vegetables.
PubMed: Researching on new species of "Mate": Ilex brevicuspis: phytochemical and pharmacology study.
PubMed: Dietary flavonoids: bioavailability, metabolic effects, and safety.
PubMed: Antioxidant activity of selected Indian spices.
PubMed: Purification, characterization, and substrate specificity of a novel highly glucose-tolerant beta-glucosidase from Aspergillus oryzae.
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