IP Library › Granted Patent US 7,462,473
Granted Patent B2
US 7,462,473 · App. 10/624,192 · Granted Dec 9, 2008

Use of food colours to dye enzyme solutions

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Quick Facts
Patent No.
US 7,462,473
App. No.
10/624,192
Granted
Dec 9, 2008
Kind
B2
Abstract

The present invention relates to the use of food colors for coloring enzyme solutions, to enzyme solutions provided with food colors as well as their use.

Claims (5)

1. A method for storing a restriction enzyme comprising adding to the restriction enzyme a food color, wherein the enzyme when stored shows no loss or less than 20% loss of activity after prolonged storage, and wherein the food color is Ponceau 4R.

2. The method of claim 1 , further comprising patent blue.

3. The method of claim 1 , further comprising tartazine.

4. A method for storing a restriction enzyme comprising adding to the restriction enzyme a food color, wherein the enzyme when stored shows no loss or less than 20% loss of activity after prolonged storage, and wherein the food color is patent blue.

5. The method of claim 4 , further comprising tartazine.

Assignments (1)
CHANGE OF NAME Recorded Mar 7, 2023
From: EPPENDORF AG
To: EPPENDORF SE
Reel/Frame 062967/0806 →