Organ- and Age-Specific Differences of Dioscorea polystachya Compounds Measured by UPLC-QTOF/MS
| Autor: | Ge Xiaojin, Tiegang Yang, Xiang-Yang Li, Xin-Ran Xu, Li Yanjun, Yan-Ge Yu, Xiaoyang Guo, Dandan Dai |
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| Rok vydání: | 2020 |
| Předmět: |
Sucrose
Malvalic acid Bioengineering 01 natural sciences Biochemistry Mass Spectrometry chemistry.chemical_compound Allantoin Functional food Molecular Biology Chromatography High Pressure Liquid Flavonoids biology Traditional medicine 010405 organic chemistry Dioscorea Flesh fungi food and beverages General Chemistry General Medicine Dehydroepiandrosterone biology.organism_classification Dioscorea polystachya 0104 chemical sciences Glutamine 010404 medicinal & biomolecular chemistry Plant Tubers chemistry Uplc qtof ms Molecular Medicine |
| Zdroj: | Chemistrybiodiversity. 18(2) |
| ISSN: | 1612-1880 |
| Popis: | Dioscorea polystachya, named Chinese yam, is widely cultivated as a functional food and natural medicine in China. There is currently little information about the chemical characteristics of Dioscorea polystachya in different organs (tuber cortex and tuber flesh) and at various ages. In this study, an ultra-high-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UPLC-QTOF/MS) was used to profile chemical compounds in Dioscorea polystachya. As a result, thirty-eight compounds were detected in yam tuber cortex and tuber flesh. More compounds were detected in yam tuber cortex than in tuber flesh. Compounds such as dehydroepiandrosterone, allantoin and flavonoids were selected as biomarker candidates. Dehydroepiandrosterone was found more abundant in tuber flesh, while allantoin and flavonoids showed higher levels in tuber cortex. Furthermore, the levels of dioscin, malvalic acid and sucrose differed significantly among age groups and were highest in the tubers at 2 years. While the levels of allantoin, adenosine and glutamine increased with the growing years and were highest at 4 years. Thus, 2-year old Dioscorea polystachya tubers could be harvested to prepare dioscin, malvalic acid and sucrose supplements. The 4-year-old Dioscorea polystachya tubers would be the best choice for obtaining a large amount of allantoin and adenosine in industrial production. |
| Databáze: | OpenAIRE |
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