Labdane-type diterpene dialdehyde, pungent principle of myoga, Zingiber mioga Roscoe

• Published in: Bioscience, biotechnology, and biochemistry Vol. 66; no. 12; pp. 2698 - 2700
• Main Authors: Abe, M. (Takasaki Univ. of Health and Welfare, Gunma (Japan)), Ozawa, Y, Uda, Y, Yamada, Y, Morimitsu, Y, Nakamura, Y, Osawa, T
• Format: Journal Article
• Language: English
• Published: Tokyo Japan Society for Bioscience, Biotechnology, and Agrochemistry 01.12.2002; Japan Society for Bioscience Biotechnology and Agrochemistry; Oxford University Press
• Subjects: ALDEHYDES; Biological and medical sciences; Chemical constitution; Diterpenes - chemistry; DITERPENOIDS; Fundamental and applied biological sciences. Psychology; Humans; labdane-type diterpene; miogadial; Molecular Structure; Plant physiology and development; pungent principle; SPECTROMETRY; STIMULANTS; Taste; TASTE (SENSATION); ZINGIBER MIOGA; Zingiber mioga Roscoe; Zingiberaceae - chemistry; Monocotyledones; Molecular structure; miogadial; Flower bud; Dialdehyde; Spice; Angiospermae; Diterpene; Flavoring crop; Isolation; Zingiber mioga Roscoe; Spermatophyta; Taste; pungent principle; labdane-type diterpene; Zingiberaceae; Food
• ISSN: 0916-8451; 1347-6947
• DOI: 10.1271/bbb.66.2698

The pungent principle of myoga (Zingiber mioga Roscoe) was identified as (E)-8β(17)-epoxylabd-12-ene-15,16-dial (miogadial) on the basis of its physical and spectroscopic properties (MS, NMR, IR, and UV). Galanal A and B, isolated as well as miogadial, had no hot taste. Reduced miogadial also was tasteless. The pungency of miogadial depended on the presence of αβ-unsaturated-1,4-dialdehyde group.