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Lutein-embedded porous starch microcapsule and preparation method thereof

A technology of porous starch and lutein powder, applied in microcapsules, capsule delivery, medical preparations of non-active ingredients, etc., can solve the problems of poor pore forming effect, high energy consumption, and long time consumption, and achieve obvious stability The effect of protection, short time consumption and simple equipment

Active Publication Date: 2020-04-28
CHINA-SINGAPORE INT JOINT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of porous starch by a single enzymatic hydrolysis method has the disadvantages of high energy consumption, long time consumption, and poor pore-forming effect; therefore, it is worth exploring to seek physical methods and biological enzymatic hydrolysis to prepare porous starch.

Method used

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  • Lutein-embedded porous starch microcapsule and preparation method thereof
  • Lutein-embedded porous starch microcapsule and preparation method thereof
  • Lutein-embedded porous starch microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The preparation of described porous starch comprises the steps:

[0093] A, pulsed electric field pretreatment: cornstarch and deionized water are mixed at normal temperature, and the quality of described cornstarch is 8wt% of deionized water quality, obtain starch emulsion solution, drop electrolyte solution ( Embodiment 1 selects KCl solution), mixes evenly to obtain a mixed solution, the conductivity of the mixed solution is 125 µS / cm, then the mixed solution is pumped into a pulsed electric field for pulsed electric field pretreatment, and the flow rate of the cross-flow pump is 2.4ml / s, the intensity of the pulsed electric field is 40kV / cm, the electric field frequency of the pulsed electric field is 1kHz, the pulse width of the pulsed electric field is 40µS, and the precipitate is collected by centrifugation (centrifugation time is 10min, and the centrifugation rate is 4000rpm), dried , pulverized, sieved (the size of the sieve hole is 100 mesh), and the pretreat...

Embodiment 2

[0105] The preparation of described porous starch comprises the steps:

[0106] A, pulsed electric field pretreatment: cornstarch and deionized water are mixed at normal temperature, and the quality of described cornstarch is 5wt% of deionized water quality, obtains starch milk solution, then drops electrolytic solution in the starch milk solution ( NaCl solution), mixed evenly to obtain a mixed solution, the conductivity of the mixed solution was 100µS / cm, and then the mixed solution was pumped into a pulsed electric field for pulsed electric field pretreatment, and the flow rate of the cross-flow pump was 1.8ml / s. The intensity of the pulsed electric field is 20kV / cm, the electric field frequency of the pulsed electric field is 0.5kHz, the pulse width of the pulsed electric field is 20µS, and the sediment is collected by centrifugation (the centrifugal force is 3000g, the centrifugation time is 15min, and the centrifugation rate is 3000rpm), Drying, crushing, and sieving (th...

Embodiment 3

[0115] The preparation of described porous starch comprises the steps:

[0116] A. Pulse electric field pretreatment: mix cornstarch and deionized water at normal temperature, the quality of the cornstarch is 10wt% of the quality of deionized water, to obtain a starch milk solution, and then drop KCl electrolyte solution into the starch milk solution , mixed uniformly to obtain a mixed solution, the conductivity of the mixed solution is 150 µS / cm, then the mixed solution is pumped into a pulsed electric field to carry out pulsed electric field pretreatment, the flow rate of the cross-flow pump is 3.6ml / s, and the pulsed electric field The strength of the pulsed electric field is 50kV / cm, the electric field frequency of the pulsed electric field is 1.5kHz, the pulse width of the pulsed electric field is 30µS, centrifuged to take the precipitate (centrifugation time is 5min, centrifugation speed is 5000rpm), dried, pulverized, sieved ( The size of the sieve hole is 100 mesh), an...

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Abstract

The invention discloses a lutein-embedded porous starch microcapsule and a preparation method thereof. The method includes the following steps: adding lutein to edible fat, and performing stirring toobtain a lutein solution; adding porous starch into the lutein solution, and performing stirring to obtain a mixture; and performing centrifugation to obtain the lutein-embedded porous starch microcapsule. A preparation method of the porous starch includes the following steps: mixing starch and water to obtain a starch milk, adjusting the electrical conductivity, and performing pulse electric field treatment to obtain a semi-finished starch sample; mixing the semi-finished starch sample and an acetic acid-sodium acetate buffer solution, and adding alpha-amylase and glucoamylase; and performingconstant-temperature water bath, and performing drying to obtain the porous starch. According to the lutein-embedded porous starch microcapsule provided by the invention, the lutein retention rate can still reach 70% or above after a two-week stability test; the porous starch used in the method is loose and porous, and can effectively embed the lutein; and the preparation method of the porous starch has low energy loss, and is environmentally friendly.

Description

technical field [0001] The invention belongs to the field of food and drug industry, and in particular relates to a porous starch microcapsule embedding lutein and a preparation method thereof. Background technique [0002] Lutein is a natural oxygen-containing carotenoid widely present in green vegetables, human plasma, and eyeballs. Lutein is a fat-soluble molecule that has many beneficial effects on human health, such as improving vision, protecting the skin from UV-induced damage, and reducing the risk of atherosclerosis, cancer, and cardiovascular disease. Due to its unique physiological functions, it has been used in many fields such as functional food, medicine and livestock feed. However, lutein cannot be synthesized directly by the human body and must be derived from dietary sources such as breast milk and supplements. [0003] Lutein molecules have multiple conjugated double bond structures, and the structure is divided into all-trans and cis conformations. The n...

Claims

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Application Information

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IPC IPC(8): A23L33/105A23L29/30A23L5/30A23P10/35A23L29/00A23L5/00A61K9/50A61K47/36A61K31/047A61P9/00A61P9/10A61P35/00
CPCA23L33/105A23L29/35A23L5/30A23P10/35A23L29/06A23L5/00A61K9/5036A61K31/047A61P9/00A61P9/10A61P35/00A23V2002/00A23V2200/30A23V2250/5118A23V2250/211A23V2300/12
Inventor 黄强余雅倩李松南张斌
Owner CHINA-SINGAPORE INT JOINT RES INST
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