title: Fruit quality, nutraceutical and antimicrobial properties of 58 muscadine grape varieties (Vitis rotundifolia Michx.) grown in United States.
abstract: Fifty-eight muscadine grape varieties were evaluated for their fruit quality, nutraceutical, and antimicrobial properties during two growing seasons (2012 vs. 2013). Fruit quality was significantly different among muscadine grape varieties, with weight ranged from 2.93 to 22.32g, pH from 3.01 to 3.84, titratable acidity from 0.27% to 0.83%, and °Brix from 10.92 to 23.91. Total phenols for different muscadine juices varied from 0.26 to 1.28mgGA/mL, skins from 10.13 to 30.02mgGA/g DM, and seeds from 22.47 to 72.01mgGA/g DM. Accordingly, the antioxidant activity of grape juices varied from 0.97 to 6.78mmolTrolox/mL, skins from 83.59 to 221.20μmolTrolox/g DM, and seeds from 178.22 to 619.73μmolTrolox/g DM. Study demonstratedgrape seed polyphenols (MIC 54.8-60.1μg/ml) showed stronger antimicrobial activity against S. aureus than skin polyphenols (MIC 70.7-80.2μg/ml). This information could be a valuable asset in the research and extension of muscadine grapes.
authors.affiliation: Department of Food Science and Human Nutrition, University of Florida, Gainesville 32611, USA; Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln 68588, USA. Electronic address: cxu13@unl.edu.
authors.forename: Changmou
authors.initials: C
authors.lastname: Xu
authors.affiliation: Department of Food Science and Human Nutrition, University of Florida, Gainesville 32611, USA.
authors.forename: Yavuz
authors.initials: Y
authors.lastname: Yagiz
authors.affiliation: Department of Food Science and Human Nutrition, University of Florida, Gainesville 32611, USA.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhao
authors.affiliation: Department of Family, Youth and Community Sciences, University of Florida, Gainesville 32611, USA.
authors.forename: Amarat
authors.initials: A
authors.lastname: Simonne
authors.affiliation: Center for Viticulture and Small Fruit Research, Florida A&M University, Tallahassee 32317, USA; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, People's Republic of China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Lu
authors.affiliation: Department of Food Science and Human Nutrition, University of Florida, Gainesville 32611, USA. Electronic address: martym@ufl.edu.
authors.forename: Maurice R
authors.initials: MR
authors.lastname: Marshall
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D019587:Dietary Supplements / Q000032:analysis*; D005638:Fruit / Q000737:chemistry / Q000145:classification / Q000254:growth & development; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D059808:Polyphenols / Q000737:chemistry / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D014481:United States; D027843:Vitis / Q000737:chemistry* / Q000145:classification / Q000254:growth & development
chemical_list: D000900:Anti-Bacterial Agents; D010936:Plant Extracts; D059808:Polyphenols
keywords: Antioxidants; Fruit quality; MIC; ORSI; Polyphenols; Table grape