Matches in SemOpenAlex for { <https://semopenalex.org/work/W2066526083> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W2066526083 endingPage "44" @default.
- W2066526083 startingPage "35" @default.
- W2066526083 abstract "Free radical scavenging activities of water-soluble extracts from some natural sources, health foods, and antioxidant substances were measured using the JES-FR30 JEOL spectrometer. The objective was to develop a standardized method whereby comparison could be made between the radical scavenging activities of complex mixtures. Scavenging of hydroxyl radical was determined using DMPO. Activity was calibrated using a standard material, L-ascorbic acid 2-[3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-2H -1- benzopyran-6yl-hydrogen phosphate] potassium salt (EPC-K1), an analog of vitamin C and vitamin E which is water soluble and stable at room temperature. The order of greatest hydroxyl radical scavenging activity was green tea extract, pine bark extract (Pycnogenol), Ginkgo Biloba extract (EGb 761), a flavonoid blend of several fruit and vegetable extracts (GNLD), and Bio-Normalizer (Sun-O Corp). Activity was determined after treatment of samples with ascorbic acid oxidase. This treatment revealed the presence of ascorbate in some natural extracts and commercial preparations. The pine bark extract was the most heat resistant and had ascorbate-like activity in the preparations. Scavenging of superoxide anion was determined using the spin trap, 5,5-dimethyl-1-pyrroline-N-oxide (DMPO), and analyzed by comparison with a standard curve made with superoxide dismutase. Comparison of the water solubilized components of natural source antioxidants showed that filtrates fractionated using centrifuge type Millipore filter tubes (M.W. < 100,000; M.W. < 10,000) also had almost the same SOD-like activity. Samples were also treated with ascorbate oxidase or by heating (100 degrees C for 10 min). The order of activity, from greatest to least, was Ginkgo biloba extract EGb 761, pycnogenol, beta-catechin, tea and BioNormalizer." @default.
- W2066526083 created "2016-06-24" @default.
- W2066526083 creator A5010135608 @default.
- W2066526083 creator A5028228129 @default.
- W2066526083 creator A5058329907 @default.
- W2066526083 creator A5065512005 @default.
- W2066526083 creator A5069992163 @default.
- W2066526083 creator A5075341990 @default.
- W2066526083 date "1997-06-01" @default.
- W2066526083 modified "2023-09-30" @default.
- W2066526083 title "Hydroxyl and superoxide anion radical scavenging activities of natural source antioxidants using the computerized JES-FR30 ESR spectrometer system" @default.
- W2066526083 cites W1482104626 @default.
- W2066526083 cites W1578984482 @default.
- W2066526083 cites W174543563 @default.
- W2066526083 cites W2048793791 @default.
- W2066526083 doi "https://doi.org/10.1080/15216549700202411" @default.
- W2066526083 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9192083" @default.
- W2066526083 hasPublicationYear "1997" @default.
- W2066526083 type Work @default.
- W2066526083 sameAs 2066526083 @default.
- W2066526083 citedByCount "89" @default.
- W2066526083 countsByYear W20665260832012 @default.
- W2066526083 countsByYear W20665260832013 @default.
- W2066526083 countsByYear W20665260832014 @default.
- W2066526083 countsByYear W20665260832015 @default.
- W2066526083 countsByYear W20665260832016 @default.
- W2066526083 countsByYear W20665260832017 @default.
- W2066526083 countsByYear W20665260832018 @default.
- W2066526083 countsByYear W20665260832019 @default.
- W2066526083 countsByYear W20665260832020 @default.
- W2066526083 countsByYear W20665260832021 @default.
- W2066526083 countsByYear W20665260832022 @default.
- W2066526083 countsByYear W20665260832023 @default.
- W2066526083 crossrefType "journal-article" @default.
- W2066526083 hasAuthorship W2066526083A5010135608 @default.
- W2066526083 hasAuthorship W2066526083A5028228129 @default.
- W2066526083 hasAuthorship W2066526083A5058329907 @default.
- W2066526083 hasAuthorship W2066526083A5065512005 @default.
- W2066526083 hasAuthorship W2066526083A5069992163 @default.
- W2066526083 hasAuthorship W2066526083A5075341990 @default.
- W2066526083 hasBestOaLocation W20665260831 @default.
- W2066526083 hasConcept C13965031 @default.
- W2066526083 hasConcept C178790620 @default.
- W2066526083 hasConcept C181199279 @default.
- W2066526083 hasConcept C185592680 @default.
- W2066526083 hasConcept C2776778087 @default.
- W2066526083 hasConcept C2777807096 @default.
- W2066526083 hasConcept C2778004101 @default.
- W2066526083 hasConcept C2780795997 @default.
- W2066526083 hasConcept C2986274086 @default.
- W2066526083 hasConcept C31903555 @default.
- W2066526083 hasConcept C43617362 @default.
- W2066526083 hasConceptScore W2066526083C13965031 @default.
- W2066526083 hasConceptScore W2066526083C178790620 @default.
- W2066526083 hasConceptScore W2066526083C181199279 @default.
- W2066526083 hasConceptScore W2066526083C185592680 @default.
- W2066526083 hasConceptScore W2066526083C2776778087 @default.
- W2066526083 hasConceptScore W2066526083C2777807096 @default.
- W2066526083 hasConceptScore W2066526083C2778004101 @default.
- W2066526083 hasConceptScore W2066526083C2780795997 @default.
- W2066526083 hasConceptScore W2066526083C2986274086 @default.
- W2066526083 hasConceptScore W2066526083C31903555 @default.
- W2066526083 hasConceptScore W2066526083C43617362 @default.
- W2066526083 hasIssue "1" @default.
- W2066526083 hasLocation W20665260831 @default.
- W2066526083 hasLocation W20665260832 @default.
- W2066526083 hasOpenAccess W2066526083 @default.
- W2066526083 hasPrimaryLocation W20665260831 @default.
- W2066526083 hasRelatedWork W2097987586 @default.
- W2066526083 hasRelatedWork W2347264863 @default.
- W2066526083 hasRelatedWork W2350465643 @default.
- W2066526083 hasRelatedWork W2354707320 @default.
- W2066526083 hasRelatedWork W2371322851 @default.
- W2066526083 hasRelatedWork W2373524923 @default.
- W2066526083 hasRelatedWork W2385857385 @default.
- W2066526083 hasRelatedWork W2386117422 @default.
- W2066526083 hasRelatedWork W2390901261 @default.
- W2066526083 hasRelatedWork W2183750583 @default.
- W2066526083 hasVolume "42" @default.
- W2066526083 isParatext "false" @default.
- W2066526083 isRetracted "false" @default.
- W2066526083 magId "2066526083" @default.
- W2066526083 workType "article" @default.