Production of iso-.alpha.-acids

Details Production of iso-.alpha.-acids Production of iso-.alpha.-acids

1979-05-24

1981-01-27

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4567

Patent

active

042474833

ABSTRACT:
A method of making an aqueous composition containing iso-.alpha.-acids by isomerizing .alpha.-acids, preferably obtained by extracting hops with liquid carbon dioxide or organic solvents, in an aqueous alkaline medium is characterized by providing one or more salts in solution in the isomerized reaction mixture at a molar equivalent concentration greater than that of the iso-.alpha.-acids, whereby the reaction mixture separates into an oily phase and an aqueous phase, the oily phase containing a higher concentration of iso-.alpha.-acids than the aqueous phase, and recovering an aqueous composition containing iso-.alpha.-acids by separating the oily phase from the aqueous phase. The preferred salt is potassium carbonate which also provides a suitable pH for isomerization.

REFERENCES:
patent: 3364265 (1968-01-01), Klingel et al.
patent: 3751266 (1973-08-01), Kuroiwa et al.
patent: 3952061 (1976-04-01), Koller et al.
patent: 4160787 (1979-07-01), Moll et al.
patent: 4190604 (1980-02-01), Burckhardt et al.
Moore, Physical Chemistry, pp. 358-359, (1962), Prentice Hall.

Affiliated with

Also associated with

Rating

Production of iso-.alpha.-acids does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of iso-.alpha.-acids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of iso-.alpha.-acids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1181290