C - Chemistry – Metallurgy – 07 – K
Patent
C - Chemistry, Metallurgy
07
K
C07K 5/075 (2006.01) A23L 1/236 (2006.01) C07K 5/072 (2006.01)
Patent
CA 2089358
2089358 9302101 PCTABS00019 A method for crystallizing .alpha. -L-aspartyl-L-phenylalanine methyl ester (APM) by cooling. In this method, crystals of APM are subjected to crushing, and the crushed APM crystals are used as seed crystals for growing APM crystals. By the use of crushed seed crystals, the generation of fine secondary APM crystals can be suppressed, and the width to length ratio of resulting APM crystals becomes larger. As a whole, big APM crystals having improved filtering and drying properties can be obtained. Such crystals can be advantageous with regard to production, quality and handling. The precipitation of APM crystals proceeds quite efficiently with only a small quantity of crushed seed crystals. This invention also relates to crystallization of APM using in situ prepared crushed seed crystals.
Egashira Hidetaka
Murakami Tsugio
Okajima Kengo
Vermijs Winfried J. W.
Wakamatsu Hidetoshi
Fetherstonhaugh & Co.
Holland Sweetener Company
Tosoh Corporation
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