Esters, higher alcohols and sesquiterpenoids in
Taru-Sake (
sake stored in a cedar cask) stored in
Akamidaru and
Kotsukidaru for various length of time were analyzed by gas chromatography. Glucose and the absorbance at 490 nm were also analyzed. The storage of
sake in a cedar cask increased the sesquiterpenoids and the absorbance at 490 nm, but esters, higher alcohols, and glucose were not affected by the storage.
Sake caused the response of GABA
A receptors expressed in
Xenopus oocytes, suggesting the presence of GABA in the
sake. However, the extract of cask storaged
sake with pentane did not potentiate the GABA
A receptor response, though that of whiskey did. The storage of
sake in a cedar cask increased the 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and the total polyphenol.
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