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Mixed aqueous solution of l-lysine and l-threonine

一种赖氨酸、苏氨酸的技术，应用在含有效成分的医用配制品、动物饲料、附加食物要素等方向，能够解决尚未投入实际使用等问题，达到低粘度、易于处理的效果

Inactive Publication Date: 2011-02-02
AJINOMOTO CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, liquid feed ingredients containing L-threonine are also desired, but not yet put into practical use

Method used

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  • Mixed aqueous solution of l-lysine and l-threonine
  • Mixed aqueous solution of l-lysine and l-threonine
  • Mixed aqueous solution of l-lysine and l-threonine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: Example at 20°C and pH 11.3

[0061] 50% L-lysine solution in an amount of 763.69 g and L-threonine crystals in an amount of 50.12 g (they were obtained from commercial sources (Ajinomoto Eurolysine S.A.S., (50% L-lysine; Lot (lot number) 6256) , (L-threonine; Lot 6255))) were mixed in a 1 L glass flask. Then an amount of 61.83 g of 50% caustic soda (sodium hydroxide solid; Merck KGaA, reagent grade (purity >99%)) was added to adjust the pH to 11 at room temperature. The solution was concentrated to about 1.6 times using a rotary evaporator (pressure: 100 mbar, water bath temperature: 60° C.). As a result, crystal precipitation was observed. The slurry was stirred overnight at room temperature (20° C.) so that the saturated solution did not become supersaturated. Then, the saturated solution was separated from the crystals by centrifugation at 4000 rpm for 30 min at 20°C (J2-21M / E-Beckman, rotor JA-14). Viscosity and content of L-lysine, L-threonine, sodi...

Embodiment 2

[0068] Example 2: Example at -5°C and pH 12

[0069] A 514.20 g amount of L-lysine solution (which has an L-lysine concentration of 61.46% and a pH adjusted to 10.98 at 20° C.) and a 441.79 g amount of L-threonine solution (which has a 42.93% L-lysine concentration and pH adjusted to 11.02 at 20°C) were mixed in a 1 L glass flask. The 61.46% L-lysine solution was evaporated from a commercial source (Ajinomoto Eurolysine S.A.S., (50% L-lysine; Lot 6256)) using a rotary evaporator (pressure: 100 mbar, water bath temperature: 60 °C) and the 42.93% L-threonine solution was also obtained from a commercial source (Ajinomoto Eurolysine S.A.S., (L-threonine; Lot 7158)). The resulting mixed solution of L-lysine and L-threonine was stirred overnight at room temperature and cooled to -5°C. The solution was maintained at -5°C with stirring for 48 hours, then overnight under static conditions. As a result, crystal precipitation was observed. Then, the saturated solution was separated f...

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Abstract

It is an object of the present invention to provide a mixed aqueous solution of L-lysine and L-threonine industrially useful as an animal feed ingredient, which is stable and concentrated and has good handleability. The above problem has been solved by providing a mixed aqueous solution of L-lysine and L-threonine essentially consisting of L-lysine, L-threonine and water, which has a viscosity of 3300 cp or less at 20 DEG C, a pH of 10-13 and a total concentration of L-lysine and L-threonine in the mixed aqueous solution of 70 g / 100 g of water or more.

Description

technical field [0001] The present invention relates to a mixed aqueous solution of L-lysine and L-threonine which consists essentially of L-lysine, L-threonine and water and is used as a feed ingredient and the like. Background technique [0002] An aqueous solution based on L-lysine is known as an amino acid-containing feed ingredient (see Patent Document 1). It is also known that a stable L-lysine-based aqueous solution ( See patent document 2). Furthermore, it is known that a highly pure L-lysine-based aqueous solution can be obtained by electrolyzing the L-lysine-based aqueous solution to remove counteranions (see Patent Document 3). [0003] Furthermore, it is preferred that the amino acid-containing product form for use in feed is liquid due to the fact that liquid forms are easier to handle and it is easier to achieve a homogeneous mix when added to feed. In fact, amino acids in liquid form are currently widely used in the feed industry. If the feed is distribute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/305A61K31/198A23K1/16
CPCA23V2002/00A23K1/1634A23L1/3051A61K31/198A23K20/142A23L33/175A23V2250/063A23V2250/0648
Inventor 马赛尔德·克罗姆贝兹弗朗索瓦·勒费布里近森壮彦洛伊克·勒图图尔取出恭彦富家一郎
Owner AJINOMOTO CO INC