Mioganal, a Novel Pungent Principle in Myoga (Zingiber miogaRoscoe) and a Quantitative Evaluation of Its Pungency | Zendy

Masako Abe | Zendy; Yoshio Ozawa | Zendy; Yasujiro Morimitsu | Zendy; Kikue Kubota | Zendy

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Mioganal, a Novel Pungent Principle in Myoga (Zingiber miogaRoscoe) and a Quantitative Evaluation of Its Pungency

Author(s) -

Masako Abe,

Yoshio Ozawa,

Yasujiro Morimitsu,

Kikue Kubota

Publication year - 2008

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.80347

Subject(s) - pungency , horticulture , mathematics , chemistry , botany , biology , pepper

We isolated a novel pungent principle from the flower buds of myoga. Based on an interpretation of the HR-MS, EI-MS, IR, UV, and NMR data, this compound was (8betaH)-14,17-cyclolabda-12,14(17)-diene-15,16-dial (mioganal, 1). We determined the threshold value of mioganal to be 5.6x10(-5) g/ml, which is about eight times greater than that of 8beta(17)-epoxy-12(E)labdene-15,16-dial (miogadial), the main pungent principle in the flower buds of myoga. In addition, we examined the content of mioganal in different parts of different varieties. Mioganal is mainly distributed in the leaves of both natsumyoga and akimyoga varieties at 1.60 mg/100 g fresh weight on average, its amount being three times higher than that in the flower buds.

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