Characterization of Date (Deglet Nour) Seed Free and Bound Polyphenols by High-Performance Liquid Chromatography-Mass Spectrometry
| Autor: | Said Ajlouni, Sameera Sirisena, Dimitrios Zabaras, Ken Ng |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Chromatography
Catechin 04 agricultural and veterinary sciences 040401 food science High-performance liquid chromatography Protocatechuic acid chemistry.chemical_compound 0404 agricultural biotechnology chemistry Proanthocyanidin Polyphenol Organic chemistry Procyanidin A2 Procyanidin B1 Procyanidin B2 Food Science |
| Zdroj: | Journal of Food Science. 82:333-340 |
| ISSN: | 0022-1147 |
| DOI: | 10.1111/1750-3841.13625 |
| Popis: | Date (Pheonix dactylifera L.) seeds are a valuable and abundant by-product with various potential food applications. Free polyphenols (FPPs) and bound polyphenols (BPPs) of date seeds from Deglet Nour variety grown in Australia were investigated using high-performance liquid chromatography-mass spectrometry. The FPP fraction contained the following main phenolic compounds per gram of date seed powder; procyanidin B1 (499.8 ± 7.8 μg), procyanidin B2 (288.6 ± 6.1 μg), catechin (167.6 ± 2.1 μg), epicatechin (39.44 ± 0.39 μg), and protocatechuic acid (1.77 ± 0.22 μg). Additionally, one of the 2 A-type dimers was confirmed as procyanidin A2 (24.05 ± 0.12 μg/g). A-type dimers have not been reported before in date seeds. The BPP fraction contained epicatechin (52.59 ± 0.76 μg/g) and procyanidin B2 (294.2 ± 3.7 μg/g), while several peaks exhibiting ESI- m/z of 153 indicated dihydroxybenzoic acid isomers including protocatechuic acid (2.138 ± 0.025 μg/g). These findings contributed to our knowledge of date seed phytochemicals and understanding of their contribution to the reported bioactivities. |
| Databáze: | OpenAIRE |
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