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Polyphenolics in grape seeds-biochemistry and functionality.
J Med Food. 2003 Winter; 6(4):291-9.JM

Abstract

Grape seeds are waste products of the winery and grape juice industry. These seeds contain lipid, protein, carbohydrates, and 5-8% polyphenols depending on the variety. Polyphenols in grape seeds are mainly flavonoids, including gallic acid, the monomeric flavan-3-ols catechin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate, and procyanidin dimers, trimers, and more highly polymerized procyanidins. Grape seed extract is known as a powerful antioxidant that protects the body from premature aging, disease, and decay. Grape seeds contains mainly phenols such as proanthocyanidins (oligomeric proanthocyanidins). Scientific studies have shown that the antioxidant power of proanthocyanidins is 20 times greater than vitamin E and 50 times greater than vitamin C. Extensive research suggests that grape seed extract is beneficial in many areas of health because of its antioxidant effect to bond with collagen, promoting youthful skin, cell health, elasticity, and flexibility. Other studies have shown that proanthocyanidins help to protect the body from sun damage, to improve vision, to improve flexibility in joints, arteries, and body tissues such as the heart, and to improve blood circulation by strengthening capillaries, arteries, and veins. The most abundant phenolic compounds isolated from grape seed are catechins, epicatechin, procyanidin, and some dimers and trimers.

Authors+Show Affiliations

Shi J
Food Research Center, Agriculture and Agri-Food Canada, Guelph, Canada. shij@agr.gc.ca
Yu J
No affiliation info available
Pohorly JE
No affiliation info available
Kakuda Y
No affiliation info available

MeSH

AntioxidantsCatechinFlavonoidsFood, OrganicGallic AcidHumansPhenolsPlant ExtractsPolymersPolyphenolsSeedsVitis

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

14977436

Citation

Shi, John, et al. "Polyphenolics in Grape Seeds-biochemistry and Functionality." Journal of Medicinal Food, vol. 6, no. 4, 2003, pp. 291-9.
Shi J, Yu J, Pohorly JE, et al. Polyphenolics in grape seeds-biochemistry and functionality. J Med Food. 2003;6(4):291-9.
Shi, J., Yu, J., Pohorly, J. E., & Kakuda, Y. (2003). Polyphenolics in grape seeds-biochemistry and functionality. Journal of Medicinal Food, 6(4), 291-9.
Shi J, et al. Polyphenolics in Grape Seeds-biochemistry and Functionality. J Med Food. 2003;6(4):291-9. PubMed PMID: 14977436.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Polyphenolics in grape seeds-biochemistry and functionality. AU - Shi,John, AU - Yu,Jianmel, AU - Pohorly,Joseph E, AU - Kakuda,Yukio, PY - 2004/2/24/pubmed PY - 2004/9/28/medline PY - 2004/2/24/entrez SP - 291 EP - 9 JF - Journal of medicinal food JO - J Med Food VL - 6 IS - 4 N2 - Grape seeds are waste products of the winery and grape juice industry. These seeds contain lipid, protein, carbohydrates, and 5-8% polyphenols depending on the variety. Polyphenols in grape seeds are mainly flavonoids, including gallic acid, the monomeric flavan-3-ols catechin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate, and procyanidin dimers, trimers, and more highly polymerized procyanidins. Grape seed extract is known as a powerful antioxidant that protects the body from premature aging, disease, and decay. Grape seeds contains mainly phenols such as proanthocyanidins (oligomeric proanthocyanidins). Scientific studies have shown that the antioxidant power of proanthocyanidins is 20 times greater than vitamin E and 50 times greater than vitamin C. Extensive research suggests that grape seed extract is beneficial in many areas of health because of its antioxidant effect to bond with collagen, promoting youthful skin, cell health, elasticity, and flexibility. Other studies have shown that proanthocyanidins help to protect the body from sun damage, to improve vision, to improve flexibility in joints, arteries, and body tissues such as the heart, and to improve blood circulation by strengthening capillaries, arteries, and veins. The most abundant phenolic compounds isolated from grape seed are catechins, epicatechin, procyanidin, and some dimers and trimers. SN - 1096-620X UR - https://www.unboundmedicine.com/medline/citation/14977436/Polyphenolics_in_grape_seeds_biochemistry_and_functionality_ DB - PRIME DP - Unbound Medicine ER -