Antifreeze solution for food preservation

Patent metadata

Field	Value
Publication number	US-11528925-B2
Application number	US-201916452516-A
Country	US
Kind code	B2
Filing date	Jun 25, 2019
Priority date	Jun 25, 2018
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

The present invention discloses an antifreeze solution for food preservation, which comprises edible alcohol, propylene glycol, glycerin, calcium chloride, sodium chloride, amino acid, Antarctic krill protein hydrolysate with an average molecular weight of 50-100 KDa, surfactant and water, wherein the surfactant is one or more of phospholipid, Tween-20, Tween-60, and Tween-80; each component is food grade, and the mass percentage is expressed as follows: alcohol 15-30%, propylene glycol 10-30%, glycerol 2-15%, calcium chloride 1-10%, sodium chloride 3-10%, amino acid 0.1-0.15%, Antarctic krill protein hydrolysate 0.01-0.3%, surfactant 0.005-0.5%, and the balance is water. The antifreeze solution provided by the present invention can lower the freezing point, improve the heat transfer efficiency, inhibit the crystallization of antifreeze solution during the low temperature stirring process and improve the stability of the antifreeze solution.

First claim

What is claimed is:

1. An antifreeze solution having less volatilization for food preservation consisting of edible alcohol, propylene glycol, glycerol, calcium chloride, sodium chloride, amino acid, Antarctic krill protein hydrolysate with an average molecular weight of 50-100 KDa, surfactant and water; wherein the antifreeze solution has a minimum freezing point of −45° C.; wherein an enzymatic hydrolysis with papain hydrolyzes Antarctic Krill to obtain an Antarctic krill crude protein hydrolysate solution; wherein the solution is sequentially passed through an ultrafiltration membrane with membrane pore molecular weight of 100 KDa and a membrane pore molecular weight of 50 KDa to obtain the protein hydrolysate with an average molecular weight of 50 KDa to 100 KDa: wherein the surfactant is polysorbate-20; and wherein each component of the antifreeze solution is food grade, and the mass percentage of each component is as follows:

edible alcohol
   15%-30%

propylene glycol
   10%-30%

glycerol
    2%-15%

calcium chloride
    1%-10%

sodium chloride
    3%-4%

amino acid
 0.1%-0.15%

Antarctic krill protein hydrolysate
 0.01%-0.3%

Surfactant
0.005%-0.5%

water
balance.

2. The antifreeze solution according to claim 1 , wherein the enzymatic hydrolysis condition with the papain enzyme in an amount of 1000 U/g protein is for 3 hours at 40° C. and pH 6.5.

3. The antifreeze solution according to claim 1 , wherein the amino acid selected from the group consisting of glycine, alanine and arginine.

4. The antifreeze solution according to claim 1 , wherein the propylene glycol has a mass percentage of 10%-20%.

5. The antifreeze solution according to claim 1 , wherein the glycerin has a mass percentage of 2%-5%.

6. The antifreeze solution according to claim 1 , wherein the calcium chloride has a mass percentage of 1%-5%.

7. The antifreeze solution according to claim 1 , wherein the propylene glycol has a mass percentage of 10%-20%, the glycerin has a mass percentage of 2-5%, and the mass percentage of calcium chloride is 1%-5%.

Assignees

• Hangzhou Qiandao Lake Dev Group Co Ltd
• Univ Zhejiang Technology

Inventors

• Ding Yuting
• Liu Shulai
• Zhang Zhenyu
• Wang Jianmin
• He Guangxi
• Yao Hongzheng

Classifications

• A23V2200/206

  Anti-freezing agent · CPC title

• A23V2250/0622

  Glycine · CPC title

• A23B4/24

  Inorganic compounds · CPC title

• A23V2300/34

  Membrane process · CPC title

• A23V2250/1582

  Chlorine · CPC title