Antioxidant Activities of the Methanol Extracts of Various Parts of Phalaenopsis Orchids with White, Yellow, and Purple Flowers

Authors

  • Hoang Chinh NGUYEN Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
  • Kuan-Hung LIN Department of Horticulture and Biotechnology, Chinese Culture University, Taipei 114, Taiwan
  • Meng-Yuan HUANG Department of Horticulture and Biotechnology, Chinese Culture University, Taipei 114, Taiwan
  • Chi-Ming YANG Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan
  • Tin-Han SHIH Biodiversity Research Center, Academia Sinica, Taipei 115, Taiwan
  • Tung-Chuan HSIUNG Department of Horticulture and Biotechnology, Chinese Culture University, Taipei 114, Taiwan
  • Yen-Chang LIN Graduate Institute of Biotechnology, Chinese Culture University, Taipei 114, Taiwan
  • Fun-Chi TSAO Department of Horticulture and Biotechnology, Chinese Culture University, Taipei 114, Taiwan

DOI:

https://doi.org/10.15835/nbha46211038

Abstract

Phalaenopsis (Phal.) orchids including white, yellow, and purple flowers are some of the most important commercial orchids worldwide. These flowering plants can be considered to be promising sources of antioxidants since several medicinal orchids were shown to have potential antioxidant activities. The antioxidant activities and several secondary metabolite compounds of the methanolic extracts of four parts (the root, pedicel, leaf, and flower) of three hybrids of white (Phal. ‘City More’), yellow (Phal. ‘Sogo Meili’), and purple (Phal. ‘Queen Beer’) flowering orchids were investigated. Results showed that the highest levels of chlorophyll a and chlorophyll b were respectively obtained in leaf extracts of white and purple orchids, whereas carotenoid showed the highest content in the flower extract of the yellow orchid. Among all tested extracts, flavonoids and anthocyanin demonstrated the highest levels in the flower extract of the purple orchid, whereas the highest level of polyphenols was observed in the flower extract of the yellow orchid. The leaf extract of the white orchid was the most effective extract with a 50% inhibitory concentration in the DPPH-scavenging activity assay, while the highest ferrous iron-chelating effect was observed in flower extracts of the yellow orchid and purple orchid, and the pedicel extract of the purple orchid. In the reducing power assay, the flower extract of the white orchid showed the most potent extract, followed by the leaf extract of the yellow orchid and the flower extract of the purple orchid. Relationships between flower colors and antioxidant activities of these orchids showed them to be potential sources of antioxidants for both medicinal use and stress-tolerance in these orchids.

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Published

2018-02-12

How to Cite

NGUYEN, H. C., LIN, K.-H., HUANG, M.-Y., YANG, C.-M., SHIH, T.-H., HSIUNG, T.-C., LIN, Y.-C., & TSAO, F.-C. (2018). Antioxidant Activities of the Methanol Extracts of Various Parts of Phalaenopsis Orchids with White, Yellow, and Purple Flowers. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 46(2), 457–465. https://doi.org/10.15835/nbha46211038

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Section

Research Articles
CITATION
DOI: 10.15835/nbha46211038

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