Glycosides in African Dietary Leaves, Hibiscus sabdariffa

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概要

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• Seven glycosides were isolated from African dietary leaves, Hibiscus sabdariffa. Their structures were determined based on UV, MS, 1H-NMR and 13C-NMR spectroscopic data as kaempferol 3-O-rutinoside [1], kaempferol 3-O-glucopyranoside [2], quercetin 3-O-rutinoside [3], citrusin C [4], 2,3-dihydro-2-(4′-hydroxy-3′-methoxyphenyl)-3-β-D-glucopyranosylmethyl-7-hydroxy-5-benzofuranpropanol [5], corchoionoside C [6], and trans-carveol 6-O-β-glucopyranoside [7]. In the bioassay with superoxide scavenging activity, 1-BuOH extract, acidic components, neutral components, compound 3 and aglycone of 3 (3a) showed strong activity. And in the tyrosinase inhibitory activity, aglycone of 1 (1a) and aglycone of 3 (3a) showed good inhibition. As a result, we considered that Hibiscus sabdariffa may be related to the longevity, and their 1-BuOH extract was found promising as a cosmetic agent. The presence of compounds 4-7 in the leaves of Hibiscus sabdariffa is reported here for the first time.

• 日本油化学会の論文

著者

• SAWABE Akiyoshi

  Departmentof Agricultural Chemistry,Faculty of Agricuture, Kinki University

• MORITA Masanori

  Joint Research Center, Kinki University

• Sawabe Akiyoshi

  Institute For Comprehensive Agricultural Sciences Kinki University

• Komemushi Sadao

  Department Of Agricultural Chemistry Faculty Of Agriculture Kinki University

• Matsubara Yoshiharu

  Department Of Applied Chemistry Faculty Of Science And Engineering Kinki University

• NESUMI Chiaki

  Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University

• MATSUMOTO Sadayoshi

  Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University

• SAWABE Akiyoshi

  Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University

• KOMEMUSHI Sadao

  Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University

• MATSUBARA Yoshiharu

  Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University

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