• As the health effects of polyphenols depend on intake and bioavailability, the biological activities of apigenin (4',5,7-trihydroxyflavone), an abundantly occurring flavone have, been extensively studied [ 1 ] [ 2 ] . (encyclopedia.pub)
  • Apigenin, another flavone found in celery, has also been found to lower oxidative stress and prevents the expression of inflammatory factors like COX-2 (5). (clinific.com)
  • Our findings indicate that flavonoids are essential for complete male fertility in rice and a combination of different classes (flavanones, flavonols, flavones, and flavone C-glycosides) appears to be important, as opposed to the essential role played primarily by flavonols that has been previously reported in several plant species. (edu.hk)
  • Heme and nonheme-type flavone synthase enzymes, FS I and FS II are responsible for the synthesis of flavones, which play an important role in various biological processes, and have a wide range of biomedicinal properties including antitumor, antimalarial, and antioxidant activities. (irb.hr)
  • In enzymology, a flavone synthase (EC 1.14.11.22) is an enzyme that catalyzes the chemical reaction a flavanone + 2-oxoglutarate + O2 ⇌ {\displaystyle \rightleftharpoons } a flavone + succinate + CO2 + H2O The 3 substrates of this enzyme are flavanone, 2-oxoglutarate, and O2, whereas its 4 products are flavone, succinate, CO2, and H2O. (wikipedia.org)
  • The goals of this study were to identify expressed sequence tags (EST) in Citrus sinensis (L.) Osbeck corresponding to genes involved in general phenylpropanoid biosynthesis and the key genes involved in the main flavonoids pathways (flavanones, flavones, flavonols, leucoanthocyanidins, anthocyanins and isoflavonoids). (scielo.br)
  • Flavonoids are divided into subgroups (flavanones, flavones, flavonols, leucoanthocyanidins, anthocyanins and isoflavonoids) and are abundant in flowers, fruits and leaves which comprise a diverse set of functions (Taylor and Grotewold, 2005). (scielo.br)
  • Three flavonoid classes above are all ketone-containing compounds, and as such, are anthoxanthins (flavones and flavonols). (ijpsr.com)
  • Chalcone synthase (CHS) is the enzyme responsible for catalyzing the first committed step of the flavonoid pathway. (scielo.br)
  • Polymethoxylated flavones (PMFs), the main form of flavones in citrus, are derived from the flavone branch of the flavonoid biosynthesis pathway. (bvsalud.org)
  • We herein report a comparative analysis of rice (Oryza sativa) mutants deficient in the early flavonoid biosynthetic genes encoding CHALCONE SYNTHASE (CHS), CHALCONE ISOMERASE (CHI), and CHI-LIKE (CHIL), with an emphasis on the analyses of disrupted tricin-lignin formation and the concurrent changes in lignin profiles and cell wall digestibility. (hku.hk)
  • Flavonoids belong to a group of natural substances with phenolic structures built around a core flavone structure and are found in plants and food products such as wine. (medscape.com)
  • Apigenin is a flavone (a subclass of bioflavonoids) primarily found in plants. (examine.com)
  • Flavonoids suppress the inducible form of NO synthase (iNOS) which yields damaging amounts of NO. [ 8 ] Flavonoids scavenge ROS via their oxidation. (medscape.com)
  • In enzymology, a flavone synthase (EC 1.14.11.22) is an enzyme that catalyzes the chemical reaction a flavanone + 2-oxoglutarate + O2 ⇌ {\displaystyle \rightleftharpoons } a flavone + succinate + CO2 + H2O The 3 substrates of this enzyme are flavanone, 2-oxoglutarate, and O2, whereas its 4 products are flavone, succinate, CO2, and H2O. (wikipedia.org)