Appeal No. 96-2149
Application 08/135,207
(a) extracting a vegetable protein material containing isoflavones with
an aqueous extractant having a pH above about the isoelectric point
of said vegetable protein material to produce an aqueous extract of
protein material and isoflavones;
(b) adjusting the pH of said aqueous extract to about the isoelectric
point of said protein material in order to precipitate said protein
material; and
(c) separating said precipitated protein material and avoiding further
washing of said precipitated protein material with water to provide an
isoflavone enriched protein isolate.
7. A process for producing an isoflavone enriched protein isolate comprising:
(a) extracting a vegetable protein material containing isoflavone with
an aqueous extractant having a pH above about the isoelectric point
of said vegetable protein material to produce an aqueous extract of
protein material and isoflavones;
(b) adjusting the pH of said aqueous extract to about the isoelectric
point of said protein material in order to precipitate said protein
material; and
(c) separating said precipitated protein material and washing said
precipitated protein material with water in an amount by weight which
is less than about 4 times the weight of said vegetable protein
material to provide an isoflavone enriched protein isolate.
In the rejection of the appealed claims, the examiner relies upon the following
references:
Carey 3,966,702 Jun. 29, 1976
Walsh 4,309,344 Jan. 05, 1982
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