Title:
ホップ酸及びその誘導体の製造
Document Type and Number:
Japanese Patent JP2013526603
Kind Code:
A
Abstract:
A method for preparing a hop acid mixture having an enantiomeric excess of a (+)-tetrahydro-α-acid is disclosed. In the method, a racemate of a tetrahydro-α-acid is contacted with an amine to form a precipitate having an enantiomeric excess of the (+)-tetrahydro-α-acid. A method for preparing a hop acid is also disclosed. In the method, a racemate of a tetrahydro-α-acid is contacted with an amine to form a precipitate comprising a (+)-tetrahydro-α-acid, and the (+)-tetrahydro-α-acid is isomerized to a hop acid selected from the group consisting of (+)-trans-tetrahydro-iso-α-acids, (−)-cis-tetrahydro-iso-α-acids, and mixtures thereof, and reduced to (+)-trans-hexahydroiso-α-acids and (−)-cis-hexahydroiso-α-acids. An additive for flavoring a malt beverage is also disclosed. The additive includes a bittering agent selected from the group consisting of (+)-trans-tetrahydro-iso-α-acids, (−)-cis-tetrahydro-iso-α-acids, (+)-trans-hexahydroiso-α-acids, (−)-cis-hexahydroiso-α-acids, and mixtures thereof.
Inventors:
Ting, Patrick, El
Pratt, Jason
Rider, david, es
Pratt, Jason
Rider, david, es
Application Number:
JP2013512101A
Publication Date:
June 24, 2013
Filing Date:
May 20, 2011
Export Citation:
Assignee:
Mirror Brewing International, Inc.
International Classes:
C07C45/81; C07C49/743; C07B55/00; C07B57/00; C07B61/00
Domestic Patent References:
| JPH05148178A | 1993-06-15 | |||
| JP2004500349A | 2004-01-08 | |||
| JP2010018631A | 2010-01-28 | |||
| JP2010209022A | 2010-09-24 |
Other References:
JPN5013006745; ＴＩＮＧ Ｐ Ｌ-Ｐ: 'ＰＲＥＰＡＲＡＴＩＯＮ ＡＮＤ ＰＵＲＩＦＩＣＡＴＩＯＮ ＯＦ ＨＯＰ ＡＣＩＤＳ ＡＮＤ ＴＨＥＩＲ ＤＥＲＩＶＡＴＩＶＥＳ' ＪＯＵＲＮＡＬ ＯＦ ＴＨＥ ＡＭＥＲＩＣＡＮ ＳＯＣＩＥＴＹ ＯＦ ＢＲＥＷＩＮＧ ＣＨＥＭＩＳＴＳ ＶＯＬ． ５４， ＮＯ． ２, 1996, ＰＡＧＥＳ １０３-１０９
Attorney, Agent or Firm:
Hideo Takino
Takao Kawasaki
Fumio Takino
Toshiaki Tsuda
Masashi Torino
Park Ji-un
Takao Kawasaki
Fumio Takino
Toshiaki Tsuda
Masashi Torino
Park Ji-un