Method For Preparing Egg-Yolk Lecit

Method For Preparing Egg-Yolk Lecithin

Method For Preparing Egg-Yolk Lecithin
【Abstracts】A Process For Preparing Yolk Lecithin From Egg Includes Such Steps As Separating Yolk From Egg, Stirring, Extracting In Edible Alcohol, Separating The Liquid Extract, Concentrating, Dewatering To Obtain Coarse Product, Supercritical CO2 Extracting., And Removing Neutral Fat.
【Explanation】
Method For Preparing One Kind Of Egg Yolk Lecithin
(A) Technical Field The Present Invention Relates To The Use Of Egg Yolk Lecithin Preparation Method Of Extraction, But Also Relates To A Method Of The Present Invention Is Obtained Lecithin Lecithin Soft Capsule Preparation Method.
(Two) Background Lecithin Is A Variety Of Physiological Functions Of Biologically Active Substances, But Also A Natural Emulsifier In Food, Medicine, Health Care Products, Animal Feed, Agriculture, Household Chemicals, Plastics, Rubber, Textiles, Leather And Other Industries Widely Used In Both. It Is Widespread In Plants And Animals To The Most Abundant Egg Yolk, Dry Up 8 To 10% Of The Total, While The Yellow Duck Egg Yolk Is Also Higher Than The 0.5 Percentage Points, So Developers More Duck Yolk Lecithin Economy.
Currently We Extract Lecithin From Egg Method Is First Processed Into Egg Yolk Powder, Egg Yolk Powder As Raw Material And Then, And Then The Organic Solvent Extraction Or Supercritical CO2 Extraction Lecithin.
Organic Solvent Extraction Method Based On Egg Yolk Powder As Raw Material, The Use Of Lecithin Dissolved In Ethanol, Methanol, Chloroform, Hexane, Acetonitrile, Petroleum Ether And Other Organic Solvents, But Insoluble In Acetone Features To Extraction And Separation Lecithin. From The Organic Solvent From The Extraction Method Can Be Divided Into Single Solvent Extraction And Mixed Solvent Extraction. Single Solvent Extraction With An Organic Solvent Extraction Is Lecithin. Mixed Solvent Extraction Method Is A Method Using Binary Solvent Extraction, Often Using Methanol - Ethanol, Chloroform - Methanol, Chloroform - Ethanol, Ethanol - Ether, Acetonitrile - Ethanol, Acetonitrile - Methanol, Acetonitrile - Binary Mixed Solvents Such As Isopropyl Alcohol. However, The Presence Of Organic Solvent Extraction Costly, Complex Process, Toxic Solvent Residue, After Extraction Of Lecithin Difficult To Use The Rest Of Other Shortcomings.
Supercritical Fluid Extraction In Recent Years, The Rise Of A New Separation Technologies. It Is The Use Of Material In The Vicinity Of The Critical Point Of The Characteristics Of A Significant Change In The Extraction And Separation Of Material. Supercritical CO2 Extraction Of Egg Yolk Lecithin Operation Based Powder As Raw Material, The 25-35MPa ,30-75 ℃, Using Supercritical CO2 Extraction 2-5h, Pumping Proposed Neutral Lipids, Then Use Supercritical CO2 And Ethanol Entrainer Extract Powder Left In The Yolk Phospholipids, And Then Evaporating The Ethanol Extract Obtained Entrainer To Obtain Lecithin.
The Supercritical CO2 Extraction Method Can Be Preferably Lecithin Overcome The Shortcomings Of The Organic Solvent Extraction, Can Avoid The Use Of Large Amounts Of Organic Solvents, But The One Hand, This Method Need To Be Processed Into Egg Yolk Powder, Egg Yolk Powder Processing Equipment And Input Large, Large Energy Consumption In The Production Of Egg Yolk Powder, And The Production Process At A Higher Temperature (50 ℃ Above), The Material At High Temperatures And Long Residence Times, Will Reduce The Activity Of Lecithin. On The Other Hand, This Method First Egg Yolk Powder Defatted With Supercritical CO2, Then Defatted Egg Yolk Powder And Then Supercritical CO2 Extracted With Ethanol Entrainer Eventually Need Lecithin, So The Need For CO2 Extraction Twice, So That CO2 Extraction Equipment Investment Is Too Large, High Production Costs.
(Three) The Purpose Of The Present Invention Is To Propose An Economical, Safe And Efficient Method For Preparing Egg Lecithin Yellow, Yellow Egg Lecithin Makes Production Equipment Investment, Simple Process, Easy Operation, Low Operating Costs, Products Without Toxic Solvent Residue, High Biological Activity.
To Achieve This Object, The Present Invention Is Prepared As Follows Lecithin: As Raw Material In Eggs, Yolk Separated Stir Egg Yolk With Edible Alcohol Extraction, Separation Of The Extract, The Extract Was Concentrated To Early Dehydration Products Lecithin The Early Lecithin Product Then Supercritical CO2 Extraction, Removal Of Neutral Fat, Neutral Fat Removal Obtained Lecithin.
Specifically, The Preparation Of Lecithin Carried Out As Follows: ① Take Egg Yolks And Mix Into Egg Yolk, Add 92 To 95% Of The Consumption Of Alcohol, At 30 ~ 45 ℃, Extraction Of 0.5 To 6 Hours, Centrifuged Separation Discard Yolk Extract Residue Obtained; ② Extract Taken At 38 ~ 43 ℃ Concentrated In Vacuo To A Gum Is Made, Then The Gels At 40 ~ 45 ℃ Vacuum Dried To Yield Lecithin First Products; ③ Lecithin Early Product Supercritical CO2 Extraction, In 30 ~ 48 ℃, 25 ~ 35MPa Extr