Nippon Nōgeikagaku Kaishi

Oxidation of β-Fenchene and Cyclo-Fenchene with Lead Tetraacetate

Toshikazu UCHIDA, Masato NOMURA, Yoshihito FUJIWARA, Yoshiharu MATSUBA ...

1986 Volume 60 Issue 6 Pages 443-450
Published: 1986
Released on J-STAGE: February 18, 2009

DOIhttps://doi.org/10.1271/nogeikagaku1924.60.443

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β-Fenchene _??_1_??_ and cyclo-fenchene _??_2_??_ were oxidized with lead tetraacetate and hydrolyzed. The oxidation of _??_1_??_ gave exo-β-fenchol _??_3_??_, endo-5, 5-dimethyl-2-methylennorbornane-6-ol _??_4_??_, 5, 5-dimethyl-2-hydroxymethyl-2-norbornene _??_5_??_, R-homo-β-fenchenilone _??_6_??_ and endo-R-homo-β-fenchenilol _??_7_??_. In a similar oxidation procedure to _??_1_??_, seven products were obtained by _??_2_??_: iso-fenchone _??_8_??_, 2, 5, 5-trimethylnorbornane-6-one _??_9_??_, endo-iso-fenchol _??_10_??_, _??_4_??_, cy-clo-fenchenilalcohol _??_11_??_, exo-5, 5-dimethyl-2-methylennorbornane-6-ol _??_12_??_ and exo-7, 7-dimeth-yl-2-methylennorbornane-6-ol _??_13_??_. Their structure and stereochemistry were determined by MS, IR, ¹H- and ¹³C-NMR spectra. Compounds _??_4_??_, _??_5_??_, _??_6_??_, _??_7_??_, _??_9_??_, _??_11_??_ and _??_12_??_ were novel monoterpene derivatives. Compounds _??_4_??_, _??_12_??_ and _??_13_??_ possessed a mild nojigiku-like odor.

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Pigment Production by Mutants of Monascus anka (Studies on Alcoholic Beverage Production Using Genus Monascus. Part I)

Mototsugu TSUKIOKA, Tadao HIROI, Tsuneo SUZUKI, Tosio KONNO

1986 Volume 60 Issue 6 Pages 451-455
Published: 1986
Released on J-STAGE: February 18, 2009

DOIhttps://doi.org/10.1271/nogeikagaku1924.60.451

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Pigment productions by 21 strains of genus Monascus from the IFO collection were studied. Monascus anka Nakazawa et Sato IFO 4478 showed the highest pigment production. Pigment productivity of several mutant strains, measured by OD₅₀₀ and OD₄₁₀, was higher compared with the parent strain (IFO 4478). UN5504-4 showed the highest pigment production of several mutant strains and its absorbancy at the cited wavelengths was 21. 1- and 10.8-times respectively, that of IFO 4478.
The absorption spectra (200_??_700nm) of 80% EtOH extracts were measured. A group with three wavelength maxima showed hyperpigment production. UN 5504-4 was a typical strain of this group. Color was indicated by the C. I. E. chromatic diagram. IFO 4478 pigment was pale red, UN 2602-7 pigment orange pink and UN 5504-4 pigment red. The time courses of pigment production and mycelial growth were compared in IFO 4478 and UN 5504-4.

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Volatile Components of the Flower of Michelia figo Spreng

Kiyoaki TATSUKA, Sachiko SUEKANE, Masae KOHAMA

1986 Volume 60 Issue 6 Pages 457-461
Published: 1986
Released on J-STAGE: February 18, 2009

DOIhttps://doi.org/10.1271/nogeikagaku1924.60.457

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Volatile components of the flower of Michelia figo Spreng. were concentrated by three methods: headspace, simultaneous distillation and extraction (SDE), and solvent extraction. The concentrates were examined by combined capillary gaschromatograph-mass spectrometry (GC-MS). Forty-two components were identified by mass spectrometry and their retention indices. Of particular interest was the presence of ethyl methacrylate and ethyl crotonate. From oleoleptic examinations, it appears that ethyl isobutyrate plays an important role on the characteristic fragrance of the flower. The content of the volatile components was about 0.1% of the weight of the flower, not including the sesquiterpenes and sesquiterpenoids.

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[title in Japanese]

[in Japanese]

1986 Volume 60 Issue 6 Pages 491-492
Published: 1986
Released on J-STAGE: February 18, 2009

DOIhttps://doi.org/10.1271/nogeikagaku1924.60.491

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