How to choose micro-encapsulation powder ?

The "shell" material of micro-encapsulation powder is usually called the wall material, and the enclosed material is usually called the core material. After the wall material wraps the core material through certain processing methods, the wall material forms a capsule and the core material becomes the capsule core. The morphological characteristics of microcapsules are diverse and can be spherical or irregular. The outer surface may be smooth or folded. The capsule membrane can be single-layered, double-layered or multi-layered; and the core covered by the capsule membrane can be either single-core or multi-core. The particle size of micro-encapsulation powder is generally in the micron range and is uneven in size, with the average particle size usually ranging from 1 to 10 μm.

Microcapsule powder is mostly used in the food industry, the core materials coated by microcapsules mainly include spice essential oils and their oleoresins, functional oils, vitamins, pigments, amino acids, bacteria and natural active ingredients in food, such as biological enzymes. Substances that can be used as microcapsule wall materials include natural polymer materials, semi-synthetic polymer materials, completely synthetic polymer materials and inorganic materials. Regardless of its origin, generally speaking, as a wall material for food microcapsules, it must meet the following characteristics:

1. Safe, non-toxic and biodegradable.
2. Does not react with core materials.
3. Stable and excellent film-forming properties.
4. The solution formed by itself has low viscosity and low hygroscopicity.
5. Odorless, no special irritating smell.
6. The embedded core material can be automatically released when exposed to water.
7. Cheap and easy to buy.

In addition, depending on the purpose of use, appropriate consideration must be given to its mechanical strength, heat transfer performance and high temperature stability. Commonly used food microcapsule wall materials are mainly derived from natural polymer materials, including proteins, such as gelatin, pea protein, whey protein isolate, soy protein isolate and silk fibroin. There are carbohydrates, such as starch and modified starch, colloidal pectin, gum arabic, sodium alginate, agar and carrageenan, and polysaccharides such as chitosan. There are also lipids, such as soy lecithin, stearic acid, etc. During use, the wall materials can be used alone or in combination according to different encapsulation mechanisms.

The preparation technology of microcapsules has always been a hot research topic. Researchers have explored more than 200 methods for preparing microcapsules, which can be divided into three categories: physical methods, chemical methods, and physical and chemical methods. Among them, physical methods can be divided into vacuum freeze drying method, spray drying method, extrusion method and air suspension method. Chemical methods can be divided into interfacial polymerization method, complex coacervation method, liposome method and orifice method, etc. Physical and chemical methods can be divided into solvent evaporation methods, interface deposition methods, phase separation methods, etc.

The quality evaluation method of microcapsule products includes the evaluation of the general properties of microcapsules and the evaluation of the specific properties of microcapsules. The evaluation of general properties mainly includes the particle size and distribution of microcapsules, particle morphology and structure, particle charge, particle fluidity, density and mechanical properties, etc. The evaluation of microcapsules mainly includes membrane thickness and permeability, core material retention rate, microcapsule embedding rate, microcapsule thermal stability, microcapsule biocompatibility, microcapsulation efficiency and microcapsulation yield. In addition, in the quality evaluation of microcapsule products, the interaction between various factors must be considered to evaluate the quality of microcapsule products more comprehensively and scientifically.

The role of microencapsulated powder

Improve product stability and shelf life

Microencapsulation powder uses microencapsulation technology to encapsulate solid, liquid or gaseous substances in tiny polymer films. Isolated from the external environment, thereby maintaining the original color, aroma, performance and biological activity to the greatest extent, and preventing the destruction and loss of nutrients. Therefore, microencapsulated powder has a longer shelf life, generally up to 36 months.

Protect nutrients

Microencapsulated powder can reduce the reaction of active substances to external environmental factors (such as light, oxygen, water) and ensure that effective nutrients are not lost. At the same time, by controlling the release of core materials, useful ingredients can be slowly released and absorbed, improving the utilization of nutrients.

Improve flavor

Microencapsulated powder can effectively improve the taste, mask and adjust the odor of different nutrients. After dissolving in the digestive tract, the microencapsulated powder releases its contents and exerts a nutritional effect.

Maintain bioactivity of active ingredients

Microencapsulated powder can isolate active ingredients and maintain the active effects of various trace elements, nutrients and active substances on the human body. This is especially important for some products that need to maintain biological activity (such as drugs, health care products, etc.).

HSF Biotech's VegeLipi^TM micro-encapsulated lipid powder is based on its patented micro-encapsulation technology, aiming at the challenges that have been facing the market of functional lipids, such as instability of active ingredients, difficult handling and flowing ability, poor solubility in water, bad taste, and etc.

Our main advantages:

High productivity: Our equipment adopts advanced production technology and efficient equipment design, enabling large-scale microcapsule production. By working with contract manufacturers, we can further realize the potential of our equipment and achieve economies of production scale.

Precise control: We have a precise control system that can accurately control key parameters such as the size, shape and coating rate of microcapsules. We can ensure that each microcapsule meets quality standards, improving product stability and reliability.

Diversified applications: Our equipment is suitable for the microencapsulation needs of different fields and products. Whether it is the food, textile, or daily chemical industries, we can provide customized solutions to meet the diverse needs of the market.

Strong technical support: We have a strong technical research and development team and a complete after-sales service system, able to provide comprehensive technical support and solutions. Whether it is equipment selection, process optimization or after-sales maintenance, we can provide timely and professional services.

For more details, please contact us:

Email: sales@healthfulbio.com

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