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Food-grade lipid Pickering emulsion and preparation method thereof

A Pickering emulsion, food-grade technology, used in emulsion delivery, cosmetic preparations, edible oil/fat, etc., can solve safety problems, emulsion stability is easily damaged, toxic and harmful chemical reagents, etc. Mild, good storage stability, little effect of environmental factors

Active Publication Date: 2019-11-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, protein, chitosan, starch, cellulose, etc. are often used in the food field to prepare solid nanoparticles to stabilize Pickering emulsions. However, since the above substances are easily affected by environmental factors such as temperature and pH, the stability of the emulsion is easily damaged. ; and starch, cellulose and other particles indicate that the wettability modification process will involve toxic and harmful chemical reagents, and there are safety problems

Method used

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  • Food-grade lipid Pickering emulsion and preparation method thereof
  • Food-grade lipid Pickering emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of solid lipid nanodispersion: heat 2 parts by mass of fully hydrogenated soybean oil to 70-85°C, heat for 20-35min to melt, and then mix with 98 parts by mass of 1.0wt.% Tween 40 solution heated to a similar temperature Mix and stir at a speed of 600rpm, then shear with a high-speed shearer at a speed of 13400rpm / min for 2min, and finally disperse with an ultrasonic device at a power of 350W for 1min, and finally stir and cool the obtained dispersion at 0-10°C for 0.5 After -2h, it was stored in a refrigerator at 0-10°C for 24h to obtain a food-grade solid lipid nano-dispersion.

[0032] Preparation of Food Lipid Pickering Emulsion: Mix the solid lipid nano-dispersion with corn oil at a mass ratio of 9:1, first process it with a high-speed shearing machine at 13400rpm for 2min, and then process it with a nano-high pressure homogenizer at a pressure of 500bar , the number of homogenization was 5 times, and a Pickering emulsion with stable lipid nanodispersio...

Embodiment 2

[0035] Preparation of solid lipid nanodispersion: heat 2 parts by mass of fully hydrogenated soybean oil to 70-85°C, heat for 20-35min to melt, and then mix with 98 parts by mass of 2.0wt.% Tween 40 solution heated to a similar temperature Mix, stir at 600rpm, homogenize at 13400rpm / min for 2min, then disperse with an ultrasonic device at 350W for 1min, and finally stir and cool the obtained dispersion at 0-10°C for 0.5-2h, then store in the refrigerator for 0-10 Store at ℃ for 24 hours to obtain a food-grade solid lipid nanodispersion.

[0036] Preparation of Food Lipid Pickering Emulsion: Mix the solid lipid nano-dispersion with corn oil at a mass ratio of 9:1, first cut it with a high-speed shearer at a speed of 13400rpm for 2min, and then process it with a nano-high pressure homogenizer , the pressure is 500 bar, and the number of homogenization is 5 times to obtain a stable Pickering emulsion of lipid nanodispersion.

[0037] The solid lipid nano-dispersion prepared by t...

Embodiment 3

[0039] Preparation of solid lipid nanodispersion: heat 2 parts by mass of fully hydrogenated rapeseed oil to 70-85°C, heat it for 20-35min to melt, then mix with 98 parts by mass of 2.0wt.% caseinic acid heated to a similar temperature Mix the sodium solution, stir at 600rpm, homogenize at 13400rpm / min for 2min, then disperse with an ultrasonic device at 350W for 2min, and finally stir and cool the obtained dispersion at 0-10°C for 0.5-2h and store it in the refrigerator at 0 Store at -10°C for 24 hours to obtain a stable food-grade solid lipid nanodispersion.

[0040]Preparation of Food Lipid Pickering Emulsion: Mix the solid lipid nano-dispersion with corn oil at a mass ratio of 9:1, first cut it with a high-speed shearer at 12000rpm for 1min, and then process it with a nano-high pressure homogenizer , the pressure is 500 bar, and the number of homogenization is 5 times to obtain a stable Pickering emulsion of solid lipid nano-dispersion.

[0041] The solid lipid nano-dispe...

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Abstract

The invention belongs to the technical field of food, medicine and cosmetics processing, and discloses a good stability and high safety food-grade lipid Pickering emulsion stabilized by a solid lipidnano-dispersion and a preparation method thereof. The food-grade lipid Pickering emulsion of the invention is prepared by performing homogenizing A on a vegetable oil and a solid lipid nano-dispersionhaving a mass ratio of 1:9 to 5:5; and preparing the solid lipid nano-dispersion by using fully hydrogenated vegetable oil as a raw material through steps of melting, homogenizing B and cooling. Thepreparation method has the advantages of simple preparation method and mild condition, the good stability and high safety food-grade lipid Pickering emulsion stabilized by the solid lipid nano-dispersion is milky white, the emulsion is fine, and a droplet size is 200-400nm; the emulsion has good stability and does not show delamination and oil separation after being placed for one month, has greatapplication potential in the fields of food, medicine and cosmetics, and can be used for transporting fat-soluble active substances.

Description

technical field [0001] The invention belongs to the technical field of food, medicine and cosmetic processing, and particularly relates to a food-grade lipid Pickering emulsion stabilized by solid lipid nano-dispersion liquid with good stability and high safety and a preparation method thereof. Background technique [0002] Commonly used functional substances in the fields of food, medicine and cosmetics have poor stability, water solubility and bioavailability, and are easily affected by environmental factors. They are faced with maintaining activity, increasing stability, improving solubility and bioavailability during application. Utilization etc. At present, the loading and stabilization of active substances is carried out by constructing a delivery system to reduce the influence of external factors. For Pickering emulsions, the stability of the emulsion is further improved due to the irreversible adsorption of solid particles on the oil-water interface. Compared with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K9/107A61K8/06A61K8/92A23D9/04A23D9/007A61K47/44A61Q19/00
CPCA61K9/1075A61K47/44A61K8/068A61K8/922A61Q19/00A23D9/04A23D9/007A61K2800/10
Inventor 张霞昝胜杰李冰李琳焦文娟刘苑陈玲徐振波苏健裕
Owner SOUTH CHINA UNIV OF TECH
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