KMID : 1007520200290121641
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Food Science and Biotechnology 2020 Volume.29 No. 12 p.1641 ~ p.1653
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Characterization of free and glycosidically bound volatile compounds, fatty acids, and amino acids in Vitis davidii Foex grape species native to China
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Lan Yi-Bin
Xiang Xiao-Feng Yang Wei-Xi Zhu Bao-Qing Pu Hong-Tie Duan Chang-Qing
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Abstract
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Berries of six Vitis davidii Foex (spine grape) cultivars (¡®Baiputao¡¯, ¡®Gaoshan 1¡¯, ¡®Gaoshan 2¡¯, ¡®Seputao¡¯, ¡®Miputao¡¯, and ¡®Tianputao¡¯) were harvested from a commercial vineyard in Hunan Province in China. Free and bound volatile compounds and fatty acids were analyzed by GC?MS, and amino acids were analyzed by HPLC. ¡®Tianputao¡¯ and ¡®Miputao¡¯ were characterized by relatively higher concentrations of aromatic amino acids and lower concentrations of branched-chain amino acids. The major free volatile compounds of spine grapes were hexanal, (E)-2-hexenal, 1-hexanol, (E)-2-hexenol, (E)-¥â-damascenone, and benzeneacetaldehyde. The major glycosidically bound volatile compounds identified were 1-hexanol, menthol, nerol, 1-butanol, 3-methyl-3-butenol, benzenemethanol, ¥â-phenylethanol, eugenol, and guaiacol. (E)-¥â-damascenone, benzeneacetaldehyde, guaiacol, and eugenol had odor activity values (OAVs)?>?1 in all cultivar grapes. Partial least squares discriminant analysis (PLS-DA) revealed ¡®Tianputao¡¯ to be distinct from the other cultivars due to its relatively higher concentrations of major terpenoids, norisoprenoids, higher alcohols, and aromatic amino acids.
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KEYWORD
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Vitis davidii Foex, Aroma compound, Amino acid, Fatty acid, Odor activity value
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