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Fruit maturity and juice extraction influences ellagic acid derivatives and other antioxidant polyphenolics in muscadine grapes.
J Agric Food Chem. 2004 Jan 28; 52(2):361-6.JA

Abstract

Polyphenolic compounds including ellagic acid, ellagic acid derivatives, and anthocyanins were characterized and quantified by novel chromatographic conditions in eight muscadine grape (Vitis rotundifolia) cultivars and evaluated for antioxidant capacity as influenced by two ripening stages and their location within the fruit (skin, pulp, and juice). All polyphenolics generally increased as fruit ripened and the highest concentrations were located in the skins. Free ellagic acid, ellagic acid glycosides, and total ellagic acid ranged from 8 to 162, 7 to 115, and 587 to 1900 mg/kg, respectively, in the skin of ripe grapes. Hot-pressed juices contained considerably lower polyphenolic concentrations than were present in whole grapes. Five anthocyanidins were present in each cultivar in variable concentrations (delphinidin > petunidin > malvidin + peonidin > cyanidin). Antioxidant capacity was appreciably influenced by cultivar, maturity, and location in the fruit with good correlations to soluble phenolics found in both methanolic and ethyl acetate extracts (r = 0.83 and 0.92, respectively).

Authors+Show Affiliations

Department of Food Science and Human Nutrition, Institute of Food and Agricultural Sciences, University of Florida, P.O. Box 110370, Gainesville, Florida 32611-0370, USA.No affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

14733522

Citation

Lee, Joon-Hee, and Stephen T. Talcott. "Fruit Maturity and Juice Extraction Influences Ellagic Acid Derivatives and Other Antioxidant Polyphenolics in Muscadine Grapes." Journal of Agricultural and Food Chemistry, vol. 52, no. 2, 2004, pp. 361-6.
Lee JH, Talcott ST. Fruit maturity and juice extraction influences ellagic acid derivatives and other antioxidant polyphenolics in muscadine grapes. J Agric Food Chem. 2004;52(2):361-6.
Lee, J. H., & Talcott, S. T. (2004). Fruit maturity and juice extraction influences ellagic acid derivatives and other antioxidant polyphenolics in muscadine grapes. Journal of Agricultural and Food Chemistry, 52(2), 361-6.
Lee JH, Talcott ST. Fruit Maturity and Juice Extraction Influences Ellagic Acid Derivatives and Other Antioxidant Polyphenolics in Muscadine Grapes. J Agric Food Chem. 2004 Jan 28;52(2):361-6. PubMed PMID: 14733522.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fruit maturity and juice extraction influences ellagic acid derivatives and other antioxidant polyphenolics in muscadine grapes. AU - Lee,Joon-Hee, AU - Talcott,Stephen T, PY - 2004/1/22/pubmed PY - 2004/3/12/medline PY - 2004/1/22/entrez SP - 361 EP - 6 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 52 IS - 2 N2 - Polyphenolic compounds including ellagic acid, ellagic acid derivatives, and anthocyanins were characterized and quantified by novel chromatographic conditions in eight muscadine grape (Vitis rotundifolia) cultivars and evaluated for antioxidant capacity as influenced by two ripening stages and their location within the fruit (skin, pulp, and juice). All polyphenolics generally increased as fruit ripened and the highest concentrations were located in the skins. Free ellagic acid, ellagic acid glycosides, and total ellagic acid ranged from 8 to 162, 7 to 115, and 587 to 1900 mg/kg, respectively, in the skin of ripe grapes. Hot-pressed juices contained considerably lower polyphenolic concentrations than were present in whole grapes. Five anthocyanidins were present in each cultivar in variable concentrations (delphinidin > petunidin > malvidin + peonidin > cyanidin). Antioxidant capacity was appreciably influenced by cultivar, maturity, and location in the fruit with good correlations to soluble phenolics found in both methanolic and ethyl acetate extracts (r = 0.83 and 0.92, respectively). SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/14733522/Fruit_maturity_and_juice_extraction_influences_ellagic_acid_derivatives_and_other_antioxidant_polyphenolics_in_muscadine_grapes_ L2 - https://doi.org/10.1021/jf034971k DB - PRIME DP - Unbound Medicine ER -