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Li Y.-H.,Hainan Medical University | Li Y.-H.,Hainan Provincial Key Laboratory of R AndD of Tropical Herbs | Chen F.,Hainan Medical University | Chen F.,Hainan Provincial Key Laboratory of R AndD of Tropical Herbs | And 6 more authors.
Asian Journal of Chemistry | Year: 2015

Alpinia oxyphylla is commonly used in traditional East Asian medicine. Usually, only its fruits are regarded as an important medicinal plant part. However, the plant resource of A. oxyphylla is insufficient. Therefore, we question whether the leaves or rhizomes can be used as alternative parts for this genus based on phytochemical composition. In the present study, nine chemical components (i.e., tectochrysin, izalpinin, chrysin, apigenin-4′,7-dimethyl ether, kaempferide, yakuchinone A, yakuchinone B, oxyphyllacinol and nootkatone) were regarded as representative constitutes of fruits. The abundance of the nine constituents in leaves and rhizomes was evaluated by a validated LC-MS/MS method and then compared with that of fruits. The results revealed that the monitoring of the nine phytochemicals were also made in leaves or rhizomes samples as fruits. The content levels of these compounds were comparable between leaves and rhizomes, but both were significantly less than fruits. As the fruits ripening (from day 10 to day 50), the content levels of flavonoid were increased with fluctuation in rhizomes. In contrast, the concentrations measured in leaves decreased. The content changes of nootkatone and diarylheptanoid with growth time were similar between rhizomes and leaves. Additional work is required to assess the bioactive properties of the fruits, leaves or rhizomes and make the best use of these valuable medicinal plant resources. © 2015, Chemical Publishing Co. All rights reserved.

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