In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat
<i>Torreya grandis</i> is an important economic forestry product in China, whose seeds are often consumed as edible nuts, or used as raw materials for oil processing. To date, as an important by-product of <i>Torreya grandis</i>, comprehensive studies regarding the <i>T...
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MDPI AG
2022-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/17/5560 |
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| author | Wei Quan Yang Xu Yiting Xie Fei Peng Yong Lin |
| author_facet | Wei Quan Yang Xu Yiting Xie Fei Peng Yong Lin |
| author_sort | Wei Quan |
| collection | DOAJ |
| description | <i>Torreya grandis</i> is an important economic forestry product in China, whose seeds are often consumed as edible nuts, or used as raw materials for oil processing. To date, as an important by-product of <i>Torreya grandis</i>, comprehensive studies regarding the <i>Torreya grandis</i> seed coat phenolic composition are lacking, which greatly limits its in-depth use. Therefore, in the present study, the <i>Torreya grandis</i> seed coat was extracted by acid aqueous ethanol (TE), and NMR and UHPLC-MS were used to identify the major phenolics. Together with the already known phenolics including protocatechuic acid, catechin, epigallocatechin gallate, and epicatechin gallate, the unreported new compound 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid was discovered. The results of the antioxidant properties showed that both TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid exhibited strong ABTS, DPPH, and hydroxyl radical-scavenging activity, and significantly improved the O/W emulsion’s oxidation stability. These results indicate that the TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid could possibly be used in the future to manufacture functional foods or bioactive ingredients. Moreover, further studies are also needed to evaluate the biological activity of TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid to increase the added value of <i>Torreya grandis</i> by-products. |
| first_indexed | 2024-03-10T01:30:05Z |
| format | Article |
| id | doaj.art-cd42a462a7c640f496deb2e4a41c0956 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T01:30:05Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-cd42a462a7c640f496deb2e4a41c09562023-11-23T13:44:17ZengMDPI AGMolecules1420-30492022-08-012717556010.3390/molecules27175560In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed CoatWei Quan0Yang Xu1Yiting Xie2Fei Peng3Yong Lin4College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, ChinaCollege of Food Science and Technology, Hunan Agricultural University, Changsha 410128, ChinaCollege of Food Science and Technology, Hunan Agricultural University, Changsha 410128, ChinaDepartment of Food Science and Technology, Hunan Food and Drug Vocational College, Changsha 410128, ChinaEngineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha 410128, China<i>Torreya grandis</i> is an important economic forestry product in China, whose seeds are often consumed as edible nuts, or used as raw materials for oil processing. To date, as an important by-product of <i>Torreya grandis</i>, comprehensive studies regarding the <i>Torreya grandis</i> seed coat phenolic composition are lacking, which greatly limits its in-depth use. Therefore, in the present study, the <i>Torreya grandis</i> seed coat was extracted by acid aqueous ethanol (TE), and NMR and UHPLC-MS were used to identify the major phenolics. Together with the already known phenolics including protocatechuic acid, catechin, epigallocatechin gallate, and epicatechin gallate, the unreported new compound 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid was discovered. The results of the antioxidant properties showed that both TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid exhibited strong ABTS, DPPH, and hydroxyl radical-scavenging activity, and significantly improved the O/W emulsion’s oxidation stability. These results indicate that the TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid could possibly be used in the future to manufacture functional foods or bioactive ingredients. Moreover, further studies are also needed to evaluate the biological activity of TE and 2-hydroxy-2-(4-hydroxyphenylethyl) malonic acid to increase the added value of <i>Torreya grandis</i> by-products.https://www.mdpi.com/1420-3049/27/17/5560<i>Torreya grandis</i>phenolic compoundsethanol extractsseed coatantioxidant capacity |
| spellingShingle | Wei Quan Yang Xu Yiting Xie Fei Peng Yong Lin In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat Molecules <i>Torreya grandis</i> phenolic compounds ethanol extracts seed coat antioxidant capacity |
| title | In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat |
| title_full | In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat |
| title_fullStr | In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat |
| title_full_unstemmed | In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat |
| title_short | In Vitro Antioxidant Properties and Phenolic Profile of Acid Aqueous Ethanol Extracts from <i>Torreya grandis</i> Seed Coat |
| title_sort | in vitro antioxidant properties and phenolic profile of acid aqueous ethanol extracts from i torreya grandis i seed coat |
| topic | <i>Torreya grandis</i> phenolic compounds ethanol extracts seed coat antioxidant capacity |
| url | https://www.mdpi.com/1420-3049/27/17/5560 |
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