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Emulsion microaggregates and preparation method thereof

A technology of micro-aggregates and emulsions, which is applied in the fields of food ingredients as emulsifiers, functions of food ingredients, food ingredients containing inorganic compounds, etc., can solve the problems of chemical effects and molecular denaturation of the system, and achieves simple operation and good economy. , the effect is remarkable

Active Publication Date: 2017-08-01
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above treatments may produce chemical effects and molecular denaturation of the system

Method used

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  • Emulsion microaggregates and preparation method thereof
  • Emulsion microaggregates and preparation method thereof
  • Emulsion microaggregates and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0075] Add β-lactoglobulin to 10mM pH 7.0 phosphate buffer, swell overnight to form a 0.5% first aqueous phase; add lactoferrin to 10mM pH 7.0 phosphate buffer, swell overnight to form a 1% second phase water box;

[0076] Under the agitation of a high-speed emulsifying homogenizer, slowly add medium-chain fatty acids to the first water phase and the second water phase at a ratio of 10%, and shear at 5000rpm for 6min to form the first coarse emulsion and the second Coarse emulsion; the macroemulsion is further homogenized by microjet, the homogenization pressure is 30MPa, and homogenized 3 times to obtain the first oil-in-water emulsion droplet (that is, β-lactoglobulin emulsion droplet) and a second oil-in-water emulsion droplet (i.e., lactoferrin emulsion droplet), wherein the first oil-in-water emulsion droplet size is 230nm, and the second oil-in-water emulsion droplet size is 320nm;

[0077] 60% β-lactoglobulin emulsion droplets and 40% lactoferrin emulsion droplets are ...

Embodiment 2

[0080] Add whey protein isolate to 10mM pH 3.0 acetate buffer, swell overnight to form 1% first aqueous phase; add linseed gum to 10mM pH 3.0 acetate buffer, swell overnight to form 0.6 % second aqueous phase;

[0081]Under the agitation of a high-speed emulsifying homogenizer, slowly add medium-chain fatty acids to the first water phase and the second water phase at a ratio of 20%, and shear at 10000rpm for 6min to form the first coarse emulsion and the second Coarse emulsion; The macroemulsion is further homogenized by microjet flow, and the homogenization pressure is 50MPa, homogenized 3 times to obtain the first oil-in-water emulsion droplet (that is, whey protein isolate emulsion droplet) and The second oil-in-water emulsion droplet (ie, linseed latex emulsion droplet), wherein, the first oil-in-water emulsion droplet size is 225nm, and the second oil-in-water emulsion droplet size is 1206nm.

[0082] Mix 80% whey protein isolate emulsion micro-droplets with 20% flaxseed...

Embodiment 3

[0085] Add soybean protein isolate to 10mM pH 3.0 citrate buffer and swell overnight to form a 1% first aqueous phase; add beet pectin to 10mM pH 3.0 citrate buffer to swell overnight to form 1% second aqueous phase;

[0086] Under the agitation of a high-speed emulsifying homogenizer, slowly add linseed oil to the first water phase and the second water phase at a ratio of 10%, and shear at 15000rpm for 5min to form the first coarse emulsion and the second water phase. Coarse emulsion; described macroemulsion is further homogenized by microjet, homogenization pressure is 50MPa, homogeneous 3 times, obtain the first oil-in-water emulsion droplet (that is, soybean protein isolate emulsion droplet) and the second Two oil-in-water emulsion droplets (ie, sugar beet pectin emulsion droplets), wherein the size of the first oil-in-water emulsion droplet is 327 nm, and the size of the second oil-in-water emulsion droplet is 691 nm.

[0087] Mix 70% soybean protein isolate emulsion mic...

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Abstract

The invention discloses emulsion microaggregates. The emulsion microaggregates are characterized by being formed by carrying out heterotypic aggregation of first oil-in-water emulsion microdroplets and second oil-in-water emulsion microdroplets with opposite charges, wherein the first oil-in-water emulsion microdroplets comprise an oil phase and a first emulsifying agent; the second oil-in-water emulsion microdroplets comprise an oil phase and a second emulsifying agent with opposite charges; moreover, the emulsion microaggregates have average particle size of 400-10000nm and have oil phase content of 5 to 8wt%; the rheological properties represented by micro-rheology viscosity indexes or elasticity indexes are increased by 1-130 times relative to the summation of the micro-rheology viscosity indexes or the summation of the elasticity indexes of the first oil-in-water emulsion microdroplets and the second oil-in-water emulsion microdroplets. The invention also relates to a preparation method of the emulsion microaggregates. The low-fat high-rheology emulsion microaggregates and the preparation method of the emulsion microaggregates have the advantages of simple operation, good economical efficiency, obvious effect, easiness for popularization and application and the like.

Description

technical field [0001] The present invention is an emulsion microaggregate, in particular to an emulsion microaggregate and a preparation method thereof. Background technique [0002] Obesity and overweight, the accumulation of excess fat that can lead to heart disease and other chronic diseases that impair health, have attracted worldwide attention. Foods with high fat content (such as mayonnaise, sauces, chocolate and non-dairy cream, etc.) are the main cause of obesity. However, reducing fat content often reduces food rheology and other characteristics, affecting its taste and satiety. It has become a bottleneck in the development of low-fat foods. Therefore, it is of great research value to use new methods to improve the rheological properties of food systems and to find good fat substitutes. [0003] Skelhon (Skelhon, T.S. et al., Journal of Materials Chemistry, 2012, 22(36), 19289-19295) first proposed a method to reduce the fat content of chocolate by 50% without ch...

Claims

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Application Information

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IPC IPC(8): A23L33/115A23L33/12A23L29/10
CPCA23V2002/00A23V2200/124A23V2200/222A23V2250/1578A23V2250/16A23V2250/1614A23V2250/1842A23V2250/1868A23V2250/1878A23V2250/5044A23V2250/5072A23V2250/54244A23V2250/54246A23V2250/54248A23V2250/54252A23V2250/5488
Inventor 许朵霞曹雁平滕超李秀婷肖俊松
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY