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Multi-year Quantitative Evaluation of Stilbenoids Levels Among Selected Muscadine Grape Cultivars

Southern University Agriculture Research and Extension Center, Ashford O. Williams Hall, Baton Rouge, LA 70813, USA
Center for Viticulture and Small Fruit Research, Florida A&M University, 6361 Mahan Drive, Tallahassee, FL 32308, USA
USDA-ARS, Southern Horticultural Laboratory, 810 Hwy 26 West Poplarville, MS 39470, USA
Author to whom correspondence should be addressed.
Academic Editors: Paul Smith and David Jeffery
Molecules 2019, 24(5), 981;
Received: 18 January 2019 / Revised: 24 February 2019 / Accepted: 27 February 2019 / Published: 11 March 2019
(This article belongs to the Collection Wine Chemistry)
PDF [1656 KB, uploaded 11 March 2019]


Stilbenoids such as t-piceid, t-resveratrol, ε-viniferins, and t-pterostilbene can differ significantly among grape cultivars and years due to variation in environmental conditions and subsequent stressors encountered during a year. This study evaluated diverse muscadine grape cultivars for their ability to consistently produce four major stilbenoids such as t-piceid, t-resveratrol, ε-viniferins, and t-pterostilbene irrespective of environmental changes that can impact their production. Berries from forty-two muscadine grape cultivars were collected for three years (2013, 2014, and 2015) to measure stilbenoids. Results showed significant differences in the composition of four stilbenoids among the muscadine cultivars. The highest level of stilbenoids was observed in ‘Fry Seedless’ (270.20 µg/g fresh weight) in each of the three consecutive years tested followed by ‘Pride’ (46.18 µg/g fresh weight) while ‘Doreen’ produced the lowest level of stilbenoids (1.73 µg/g fresh weight). Results demonstrated that certain muscadine grape cultivars consistently produced varied levels of the four major stilbenoids year after year. Based on the total content of stilbenoids, the 42 muscadine cultivars studied were grouped into three categories such as High, Medium and Low stilbenoid-containing cultivars. This information will help establish new vineyards with cultivars that are less prone to variations in environmental conditions and can consistently produce stilbenoid-rich muscadine grape berries with enhanced market value to promote consumer health. View Full-Text
Keywords: muscadine grape; cultivars; HPLC; stilbenoids; variation muscadine grape; cultivars; HPLC; stilbenoids; variation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kambiranda, D.M.; Basha, S.M.; Stringer, S.J.; Obuya, J.O.; Snowden, J.J. Multi-year Quantitative Evaluation of Stilbenoids Levels Among Selected Muscadine Grape Cultivars. Molecules 2019, 24, 981.

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