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Antioxidant properties of the major polyphenolic compounds in broccoli.
Free Radic Res. 1997 Oct; 27(4):429-35.FR

Abstract

We have examined the antioxidant activity of the major phenolic compounds in Broccoli: two flavonol glycosides (quercetin 3-O-sophoroside and kaempferol 3-O-sophoroside) and four hydroxycinnamic acid esters (1,2'-disinapoyl-2-feruloyl gentiobiose, 1-sinapoyl-2-feruloyl gentiobiose, 1,2,2'-trisinapoyl gentiobiose and 1,2-disinapoyl gentiobiose). The Trolox C equivalent antioxidant capacity (TEAC) and inhibition of iron/ascorbate-induced lipid peroxidation of phosphatidyl choline vesicles were measured. In the aqueous phase TEAC assay, the two flavonol glycosides were less active than their respective aglycones. TEAC values for the hydroxycinnamic acid esters were less than the sum of their constituent hydroxycinnamic acids on a molar basis. Quercetin 3-O-sophoroside was a potent inhibitor of lipid peroxidation, in contrast to kaempferol 3-O-sophoroside. The hydroxycinnamic acid esters were highly effective at preventing lipid damage with the exception of 1,2,2'-trisinapoyl gentiobiose. The six compounds analysed herein demonstrate the antioxidant activity of the major phenolics in broccoli and indicate the effect on antioxidant activity of sugar substitutions in the phenolic B ring.

Authors+Show Affiliations

Biochemistry Department, Institute of Food Research, Colney, Norwich, UK. geoff.plumb@bbsrc.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9416471

Citation

Plumb, G W., et al. "Antioxidant Properties of the Major Polyphenolic Compounds in Broccoli." Free Radical Research, vol. 27, no. 4, 1997, pp. 429-35.
Plumb GW, Price KR, Rhodes MJ, et al. Antioxidant properties of the major polyphenolic compounds in broccoli. Free Radic Res. 1997;27(4):429-35.
Plumb, G. W., Price, K. R., Rhodes, M. J., & Williamson, G. (1997). Antioxidant properties of the major polyphenolic compounds in broccoli. Free Radical Research, 27(4), 429-35.
Plumb GW, et al. Antioxidant Properties of the Major Polyphenolic Compounds in Broccoli. Free Radic Res. 1997;27(4):429-35. PubMed PMID: 9416471.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant properties of the major polyphenolic compounds in broccoli. AU - Plumb,G W, AU - Price,K R, AU - Rhodes,M J, AU - Williamson,G, PY - 1998/1/7/pubmed PY - 1998/1/7/medline PY - 1998/1/7/entrez SP - 429 EP - 35 JF - Free radical research JO - Free Radic Res VL - 27 IS - 4 N2 - We have examined the antioxidant activity of the major phenolic compounds in Broccoli: two flavonol glycosides (quercetin 3-O-sophoroside and kaempferol 3-O-sophoroside) and four hydroxycinnamic acid esters (1,2'-disinapoyl-2-feruloyl gentiobiose, 1-sinapoyl-2-feruloyl gentiobiose, 1,2,2'-trisinapoyl gentiobiose and 1,2-disinapoyl gentiobiose). The Trolox C equivalent antioxidant capacity (TEAC) and inhibition of iron/ascorbate-induced lipid peroxidation of phosphatidyl choline vesicles were measured. In the aqueous phase TEAC assay, the two flavonol glycosides were less active than their respective aglycones. TEAC values for the hydroxycinnamic acid esters were less than the sum of their constituent hydroxycinnamic acids on a molar basis. Quercetin 3-O-sophoroside was a potent inhibitor of lipid peroxidation, in contrast to kaempferol 3-O-sophoroside. The hydroxycinnamic acid esters were highly effective at preventing lipid damage with the exception of 1,2,2'-trisinapoyl gentiobiose. The six compounds analysed herein demonstrate the antioxidant activity of the major phenolics in broccoli and indicate the effect on antioxidant activity of sugar substitutions in the phenolic B ring. SN - 1071-5762 UR - https://www.unboundmedicine.com/medline/citation/9416471/Antioxidant_properties_of_the_major_polyphenolic_compounds_in_broccoli_ L2 - https://www.tandfonline.com/doi/full/10.3109/10715769709065782 DB - PRIME DP - Unbound Medicine ER -
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