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A kind of lactase microcapsule and preparation method thereof

A technology of lactase and microcapsules, which is applied in the field of lactase microcapsules and its preparation, can solve the problems of lactase inactivation, poor stability, and incomplete nutrition of products, and achieve gastric protection and good acid stability Effect

Active Publication Date: 2021-01-29
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the former method usually has problems such as complex processing technology, incomplete product nutrition, and high price, the development of lactase products has become an important direction of research and development in recent years.
However, after the current lactase product is eaten, the problem of poor stability in the gastric environment is more prominent, and the inactivation of lactase is serious, so it is difficult to develop the proper function of decomposing lactose in the small intestine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of lactase glue: Mix κ-carrageenan and sodium alginate at a mass ratio of 8:2 to make a glue, and then dissolve the glue in distilled water at 80°C to prepare a 2.5% mass concentration After the glue is cooled to 43°C, add the lactase solution with a mass concentration of 2% and a temperature of 43°C at a volume ratio of 3:1, and stir with a stirrer at 500r / min for 30min to prepare a lactase glue;

[0021] (2) Ultrasonic defoaming: put the obtained lactase glue in an ultrasonic defoaming machine for ultrasonic defoaming, the ultrasonic frequency is 20kHz, and the intensity is 0.8 W / cm 2 , defoaming time is 2min;

[0022] (3) Spray granulation: Put the defoamed lactase glue into the liquid supply device of the spray granulator, and use an airflow atomizer to flow the lactase glue to the two-fluid nozzle at a flow rate of 250mL / min At the same time, 1.0MPa compressed air is passed into the nozzle to make the lactase glue spray out from the nozzle into tin...

Embodiment 2

[0027] (1) Preparation of lactase glue: Mix κ-carrageenan and sodium alginate at a mass ratio of 8:2 to make a glue, and then dissolve the glue in distilled water at 90°C to prepare a 3.0% mass concentration Glue, after cooling to 46°C, add lactase solution with a mass concentration of 4% and a temperature of 46°C at a volume ratio of 3:1, and stir with a stirrer at 1000 r / min for 20 minutes to prepare a lactase glue;

[0028] (2) Ultrasonic defoaming: put the obtained lactase glue in an ultrasonic defoaming machine for ultrasonic defoaming, the ultrasonic frequency is 30kHz, and the intensity is 0.6 W / cm 2 , defoaming time is 4min;

[0029] (3) Spray granulation: Put the defoamed lactase glue into the liquid supply device of the spray granulator, and use the airflow atomizer to flow the lactase glue to the two-fluid nozzle at a flow rate of 180mL / min At the same time, 0.7MPa compressed air is passed into the nozzle to make the lactase glue spray out from the nozzle into tiny...

Embodiment 3

[0034] (1) Preparation of lactase glue: Mix κ-carrageenan and sodium alginate at a mass ratio of 8:2 to make a glue, and then dissolve the glue in distilled water at 95°C to prepare a 3.5% mass concentration After the glue is cooled to 50°C, add lactase solution with a mass concentration of 6% and a temperature of 50°C at a volume ratio of 3:1, and stir with a stirrer at 1500 r / min for 15 minutes to prepare a lactase glue;

[0035] (2) Ultrasonic defoaming: put the obtained lactase glue in an ultrasonic defoaming machine for ultrasonic defoaming, the ultrasonic frequency is 40kHz, and the intensity is 0.3W / cm 2 , defoaming time is 6min;

[0036](3) Spray granulation: put the defoamed lactase glue into the liquid supply device of the spray granulator, and use an airflow atomizer to flow the lactase glue to the two-fluid nozzle at a flow rate of 100mL / min At the same time, 0.5MPa compressed air is passed into the nozzle to make the lactase glue spray out from the nozzle into ti...

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PUM

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Abstract

The invention discloses a lactase microcapsule and a preparation method thereof, belonging to the field of food processing. The present invention uses lactase as the core material, κ-carrageenan and sodium alginate as the wall material, CaCl 2 and ε‑polylysine as the curing agent of the colloidal particles, κ‑carrageenan as the film coating agent, ε‑polylysine as the surface hardener, prepared by lactase glue, ultrasonic defoaming, and spray granulation , curing, secondary coating and hardening, and drying to prepare the lactase microcapsules. The technology of the invention is reasonable, and the obtained product has the properties of being stable in the stomach, dissolving and releasing lactase in the small intestine, and has fine particles, good fluidity and dispersibility, and good quality, and can be widely applied to people with lactose intolerance. Good economic and social benefits.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a lactase microcapsule and a preparation method thereof. Background technique [0002] Milk is a food with the most complete nutrition and the highest nutritional value after human breast milk. Fresh milk is rich in protein, fat, amino acid, sugar, salt, calcium, phosphorus, iron and other macro and trace elements, enzymes and antibodies, etc., and is most easily digested and absorbed by the human body. Studies have shown that drinking a glass of fresh milk every morning can meet 10% of the calories and 40% of various trace elements required by the human body every day; if you drink 500 grams of milk a day, it can meet the body's daily required vitamins and calcium. 50%. [0003] Lactose is the main carbohydrate in milk, accounting for about 4.4% of milk. Lactose can promote the body's absorption of calcium and iron, enhance intestinal peristalsis, and promote excreti...

Claims

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Application Information

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IPC IPC(8): A23L33/10A23L29/00A23L29/256A23L5/30A23P10/30
CPCA23V2002/00A23L5/32A23L29/015A23L29/045A23L29/06A23L29/256A23L33/10A23P10/30A23V2200/236A23V2250/5036
Inventor 安凤平陈丽叶王艺伟宋洪波常满倩何洪
Owner FUJIAN AGRI & FORESTRY UNIV
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