WO2020106261A2

WO2020106261A2 - A novel egg protective coating material and production method thereof

Info

Publication number: WO2020106261A2
Application number: PCT/TR2019/050985
Authority: WO
Inventors: Mustafa AKIN
Original assignee: Petro-Yağ Ve Ki̇myasallar Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇
Priority date: 2018-11-22
Filing date: 2019-11-22
Publication date: 2020-05-28
Also published as: WO2020106261A3; TR201817682A2

Abstract

The protective coating material for eggs and production method thereof basically comprises the usage of bio-sourced degradable, environmentally friendly products. These products have been basically obtained by mixing vegetable based wax and suitable additives, using special production techniques. Accordingly carnauba wax and shellac have been used to form different stable formulations.

Description

A NOVEL EGG PROTECTIVE COATING MATERIAL AND PRODUCTION METHOD

THEREOF

Subject Matter of the Invention and Technical Field

The invention, is related to a protective coating material for eggs and production method thereof. The invention is related to an herbal protective coating fluid that provides antimicrobial activity used for controlling microbiologic contaminations, albumin pH value, yolk indexes, and shell resilience of chicken eggs.

Prior Art

When particularly a hen egg or any kind of egg is laid, a natural film layer is formed over the shell. This layer which is slightly sticky is called a cuticle layer. As this structure encloses an egg shell, it covers the approximately 8000 pores on the shell and thereby it provides natural protection. However this structure loses its strength in time and the egg becomes vulnerable to air inlet through the pores located on the egg shell.

Various physical and chemical degradations start during the time frame from storing chicken eggs until they reach the consumer. These degradations decrease the quality and shelf life of the eggs and the eggs are difficult to consume or impossible to consume. The natural pores on the egg shell enable gas permeability of eggs. This situation causes the egg to be vulnerable against degrading materials that can enter into the egg from the external environment. If oxygen enters the egg this leads to oxidation, change in the pH of eggs, and discoloration of the yolk, and the entrance of bacteria also leads to deterioration and rotting of the egg in a very short period of time. In order to overcome all of these disadvantages and to reduce their effect, the outer surface of the egg can be protected by being coated with a transparent protective film. Different solutions that can be prepared as renewable films, are subject matters of academic or practical studies and these provide different results.

In the prior art, the Turkish Patent which has a European patent Turkish validation numbered 2006/01325 has been encountered. The invention subject to said application,

l discloses a vegetable, fruit and egg protective coating which comprises natural wax, vegetable oil and water.

Another patent that is encountered in the prior art is the Turkish patent numbered 2009/02991 . The invention subject to this patent is related to a polyethylene glycol coating.

Another patent that is encountered in the prior art is the English patent numbered GB2172183. The invention subject to said patent discloses the application of an aqueous dispersion comprising water soluble algin that is to be used as protective coating for foodstuff including eggs. Another patent that is encountered in the prior art is the American patent numbered US2012276258. The invention subject to the patent comprises a process for protecting a fruit, wherein in said process comprises the steps of preparing fruit for consumption; infusion of the prepared fruit in order to obtain a feature selected from the group formed by the texture, aroma, taste, appearance, feeding and microbial resistance, packaging the fruit in a packet, sealing the package, subjecting the sealed package to pressure for a time range between approximately 1 to approximately 120 minutes, at a temperature between approximately 32°F to approximately 230°F for approximately 2,000 to approximately 120,000 psi, and pasteurizing the foodstuff, and de pressurizing the sealed packet (vacuum pack). Said protection is mainly directed to a process feature for preserving fruits.

Another patent that is encountered in the prior art is the American patent numbered US2012276258. The invention subject to the patent discloses a sterilization method where a synthetic polymer film surface is used; said surface having antimicrobial activity and a method for producing said synthetic polymer film.

Aims of the Invention and the Technical Problems Aimed to be Solved by the Invention

The invention, is related to a protective coating material for eggs and production method thereof which is vegetable based, has antimicrobial activity and is edible.

An advantage of the egg protective material subject to the invention is to minimize the weight loss of the egg which depends on storage.

Another advantage of the egg protective material subject to the invention is to prevent economic losses arising during the delivery of the eggs by means of the resilience provided by the coating solution on the egg shell. Another advantage of the egg protective material subject to the invention is that it prevents the losses of various nutrients in the egg such as vitamins and minerals.

Another advantage of the egg protective material subject to the invention is that it improves values such as albumin pH, albumin viscosity, yolk index, egg white index and Flaugh unit values.

Another advantage of the egg protective material subject to the invention is that it prevents microorganism contamination.

Another aim of the invention is to provide effective results that can be obtained using immersion and spraying methods in order to produce the egg protective material. The attached flow diagram shall be used in order to better understand the production method subject to the invention.

Description of the Figures

Figure-1 Flow diagram showing the production steps of the egg protective material subject to the invention.

Process Flow Numbers Helping to Better Understand the Invention

100- Receiving the coating film material into the heater

200- Mixing the coating film material 300- Adding emulsifier and alkali materials.

400- Transferring the materials into a separate heater and adding together with purified water

500- Mixing the material until it is cooled

Detailed Description of the Invention

The protective coating material for eggs and production method thereof basically comprises the usage of biosourced degradable, environmentally friendly products These products have been basically obtained by mixing vegetable based wax and suitable additives (shall be detailed below), using special production techniques (shall also be detailed below). Accordingly carnauba wax and shellac have been used to form different stable formulations.

The contents of the egg protective coating material subject to the invention is formed of contents that are generally named (or coded) as FX6, FJ7, FJ9 and FX1 1 . The contents mentioned are as follows;

FX6 FJ7

CW 0-20 15-25

Oleic acid 0-3 0-2

Ammonia, 25

% * 1

Water 50-80 60-90

Morpholine 0-10 *

Glycerol * 5

NaOH, 25% * 1

FJ9

CW 0-20

Oleic acid 0-5

Ammonia, 25 % 0-2

Water 50-70

Glycerol 6.5

Polysorbate 20 1

Shellac 0-10

Ethanol 12.5

NaOH 20% 1

_ FX11

Shellac 0-20

Glycerol 0-5

Polysorbate 80 0-5

Ethanol 20-50

Water 56

Morpholine 0-10

Not: The raw materials marked with ^* have been used in the formulas. The egg protective coating material subject to the invention basically comprises Carnauba wax formed in water, oleic acid in shellac emulsions and sodium hydroxide as alkali (NaOH) and morpholine. This basic content of the egg protective coating material subject to the invention is formed of materials whose contents can be changed according to requirement and that are coded as FX6, FJ7, FJ9 and FX1 1.

The contents by weight of the formulas have been provided above are generally as follows;

FX6 coating material comprises by percent CW (0-20) , Oleic acid (0-3) Ammonia, 25 % Water (50-80) and Morpholine (0-10). The“% value” information used here and below, next to the material, or in other words the meaning of Ammonia 25% is that 25% solution of ammonium hydroxide is prepared and is used as raw material.

FJ7 coating material comprises by percent CW (15-25) , Oleic acid (0-2) Ammonia, 25 % (1 ) Water (60-90), Glycerol (5) and NaOH 25% (1 ).

FJ9 coating material comprises by percent CW (0-20) , Oleic acid (0-5) Ammonia, 25 % (0-2) Water (50-70), Glycerol (6,5), Polysorbate 20 (1 ), Shellac (0-10), Ethanol (12,5) and NaOH 20% (1 ).

FX1 1 coating material comprises by percent Shellac (0-20), Glycerol (0-5), Polysorbate 80 (0-5), Ethanol (20-50), Water (56), Morpholine (0-10).

In order to form the content of the egg protective coating material subject to the invention, a production process has been defined according to the flow diagram shown in Figure 1 . This production process is as follows;

Receiving the coating film material into the heater (100)

Mixing the coating film material (200)

Adding emulsifier and alkali materials (300)

Transferring the materials into a separate heater and adding together with purified water (400)

Mixing the material until it is cooled (500)

The details of this production process have been provided below.

Receiving the coating film material into the heater (100)

The material that is to form the coating is received into the jacketed heater containing a main material (carnauba wax, shellac) in order to constitute the coating material from the raw materials provided in any of the F coded formula material contents such as FX6, FJ7, FJ9 and FX1 1 , together with alkali and emulsifiers. In another jacketed heater, purified water is heated. When both the water and the mixture reach the desired temperature (80- 90 C), water is added into the mixture. The mixture is mixed until it is cooled.

Mixing the coating film material (200) The material in the heater is mixed at an average mixing speed of 500 rpm and is heated at open air pressure to 70-90°C.

Adding emulsifier and alkali materials (300)

After the melting process is completed in the previous step, alkali and emulsifier agents are added to the medium and are mixed at the same temperature for 10 minutes. As an emulsifier, oleic acid and polysorbate 20 has been used in the formulas. As an alkali, morpholine, ammonia and NaOFI have been used. The usage ratios of each of these materials have been provided in the formulas.

Transferring the material into a separate heater and adding together with purified water (400) Following this, the purified water that has been heated up to 70-90°C, is added into the mixer containing the other components (10L/min) and is mixed until a completely homogenous mixture is obtained.

Mixing the material until it is cooled (500)

The heater is turned off and the product is continued to be mixed for preferably 20-90 minutes until it is cooled down to 30-40°C.

The desired results have been obtained when the egg coating materials generally having FX6, FJ7, FJ9 and FX1 1 contents are produced according to the above mentioned process. These results have been obtained according to the tests that have been conducted and some of these tests are shared for illustration purposes in Table-1 and Table-2 below. Wherein;

Table 1. % Weight Loss averages

Not: The expression K, symbolizes the“control group ” which does not inc ude any coating.

In order to determine weight loss, 20 eggs from each group (K, FX6, FX1 1 , FJ7 and FJ9) has been used. The eggs that are stored at room temperature have been monitored for 4 weeks in terms of weight. When examined with numerical values, it has been noted that an uncoated (control group) egg with the weight of 56,87 g has fallen down to 48,69 g at the end of the 4th week and it has been significant for such results to be obtained in abundance in the control group. As it can be seen from the table, the group with the highest % weight loss is the control group which has not undergone any coating process.

The below mentioned findings have been reached within the scope of the above mentioned tests;

The antimicrobial activities of the obtained edible coating films have been examined in terms of E. Coli (ATCC 25922) and S. Aureus (ATCC 25923). In this context, tests have been carried out using the disc diffusion method. After the microorganism was grown in a fluid medium (Mueller Hinton Broth) over 1 night, it was inoculated into the solid medium (Mueller Hinton Agar) and has been incubated for 1 night at 37°C. The bacteria that have been collected from the medium has been adjusted to 0.5 MC Farland standards in saline using UV spectrophotometry. The edible films have been poured into petri dishes as 20 ml. and have been kept in a 45°C drying oven for 1 week. The dried films have been taken out of the petri dishes and have been cut to certain dimensions by the aid of scissors. Following this the cut dried films have been placed on the adjusted bacteria which were inoculated into the solid medium and said films have been incubated for 24 hours at 37°C. The inhibition areas formed following incubation are measured and the results have been reported.

According to the results obtained, the inhibition effect of the FX6 coded edible film on the bacteria has been determined. In the study carried out with dry film, 10mm inhibition diameter has been obtained on E.Coli and 17mm inhibition diameter has been obtained on S.Aureous.

Industrial Applicability The egg coating material subject to the invention which has been produced by means of the production method of this invention, is able to be applied via immersion and spraying onto all edible eggs, primarily chicken eggs. This application can be carried out in a factory type environment or it can be carried out manually.

Claims

1 - An egg coating material of the invention, characterized in that it comprises at least 5-20% Carnauba wax, 0-3% oleic acid and 5-10% alkali material inside purified water.

2- An egg coating material of according to claim 1 characterized in that it comprises inside purified water, 5-20% Carnauba wax, 0-3% oleic acid and 5-10% alkali material together with materials coded as FX6, FJ7, FJ9 and FX1 1 whose contents can be changed according to requirements.

3- An egg coating material of according to claim 1 or Claim 2 characterized in that the FX6 coating material comprises by percent CW (0-20) , Oleic acid (0-3) Ammonia, 25 % Water (50-80) and Morpholine (0-10).

4- An egg coating material of according to claim 1 or Claim 2 characterized in that the FJ7 coating material comprises by percent CW (15-25) , Oleic acid (0-2) Ammonia, 25 % (1 ) Water (60-90), Glycerol (5) and NaOH, 25% (1 ).

5- An egg coating material of according to claim 1 or Claim 2 characterized in that the FJ9 coating material comprises by percent CW (0-20) , Oleic acid (0-5) Ammonia, 25 % (0-2), Water (50-70), Glycerol (6,5) Polysorbate 20 (1 ), Shellac (0-10), Ethanol (12,5) and NaOH, 20% (1 ).

6- An egg coating material of according to claim 1 or Claim 2 characterized in that the FX1 1 coating material comprises by percent Shellac (0-20), Glycerol (0-5), Polysorbate 80 (0-5), Ethanol (20-50), Water (56) and Morpholine (0-10).

7- The invention is related to an egg coating material production process comprising the following process steps;

Receiving the coating film material into the heater (100)

Mixing the coating film material (200)

- Adding emulsifier and alkali materials (300)

- Transferring the material into a separate heater and adding together with purified water (400)

- Mixing the material until it is cooled (500) 8- A production method according to claim 7, characterized in that the step of receiving the coating film material in to the heater (100) comprises the steps of the material that is to form the coating film to be received into the jacketed heater containing a main material (carnauba wax, shellac) in order to constitute the coating material from the raw materials provided in any of the F coded formula material contents such as FX6, FJ7, FJ9 and FX1 1 , together with alkali and emulsifiers, heating of these materials separately in preferably jacketed heaters, adding the heated water into the mixture when both the water and the mixture has reached the desired temperatures (80-90C) and mixing until the mixture is cooled.

9- A production method according to claim 7, characterized in that, during the step of mixing the coating film material (200), the material in the heater is mixed at an average mixing speed of 500 rpm and is heated at open air pressure to 70-90°C.

10- A production method according to claim 7, characterized in that, during the addition step of emulsifier and alkali material (300) after the melting process is completed in the previous step, alkali and emulsifier agents are added to the medium and the mixture is mixed at the same temperature for 10 minutes.

1 1 - A production method according to claim 7, characterized in that, during the step of adding the purified water into the material that have been separately heated (400), the purified water that has been heated up to 70-90°C, is added slowly into the mixer containing the other components (10 L/min) and is mixed until a completely homogenous mixture is obtained.

12- A production method according to claim 7, characterized in that, during the step of mixing the material until it is cooled (500), the heater is turned off and the product is continued to be mixed for preferably 20-90 minutes until it is cooled down to 30- 40°C.