Nano Chitosan-based Food Preservation Solution

Nano chitosan is a nanoparticle prepared from chitosan, which has excellent antimicrobial and antioxidant properties and has a promising application in food preservation. Aprofood provides you with the preparation service of nano chitosan and other development solutions.

Introduction of Nano Chitosan

Nano chitosan is a nanoparticle made from chitosan modified by physicochemical methods, which can be used for food preservation. The small particle size provides a larger specific surface area for the nanoparticles to come in contact with the substrate, which improves the bioactivity of nano chitosan. The nano form greatly improves the water solubility of chitosan and expands the range of applications, and the nano-chitosan is also significantly improved in terms of antioxidant, antimicrobial, permeability, and absorption properties.

• The protonated amino group in the nano chitosan molecule is positively charged and attracts negatively charged bacteria for bacterial inhibition.
• Nano chitosan enters into the interior of the bacterium and inhibits the growth and reproduction of microorganisms.
• Nano chitosan forms a dense protective film, preventing the entry of bacteria and the exchange of gases.
• The amino groups in nano chitosan can react with the carboxyl groups on the surface of the bacterial cell wall, affecting the integrity of the cell wall.
• Nano chitosan can selectively bind to metal ions in bacteria and disrupt their function.

Our Solutions

Aprofood offers solutions for the preparation and development of nano chitosan through a variety of methods for the preservation of fruits, vegetables, meat, and other foods. The antibacterial and antioxidant properties of nano chitosan are improved compared to those of chitosan. In addition, polyphenols have good antioxidant ability, and we often use them to form covalent film or co-blended film with chitosan, which has a considerable preservation effect.

• Ion cross-linking method

Chitosan carries cations in solution, polycation, and polyanion form ionized gel through electrostatic interaction, we can help you to get nano chitosan by this method. It has the advantages of easy operation, cheap and easy-to-get materials, fewer reagents introduced in the middle, and no toxicity.

• Emulsification cross-linking method

Chitosan solution is an aqueous phase, which is mixed with an oil phase to form a similar water-in-oil (W/O) or oil-in-water (O/W) type emulsion, and then we use a cross-linking agent for chemical cross-linking, and ultrasonic treatment to form nano chitosan. The nano chitosan thus obtained are uniform in size, stable in morphology, and have a relatively small particle size.

• Spray drying method

We prepare nano chitosan by changing the chitosan solution into dry powder, granules, or agglomerates with a spray dryer. You can get a solid sample directly and the nanoparticles obtained are of controlled size.

Applications

It can be applied to milk and dairy products (milk, goat's milk, cheese), meat and meat products (including fishballs, chicken and duck meat products, jerky, sausage, ham sausage), canned food, brewed wine (beer, wine), fruit juice drinks, baked food, plant protein products (including soy products), alcohol products, bagged food, convenience food, food that needs to be high-temperature sterilization, condiments, salad dressings, ice cream, yeast, preservation of food, such as pickles, raw fish and meat preservation.

Our Advantages

Addition in food processing improves antioxidant properties

Direct addition or incorporation into packaging to improve antimicrobial properties

Used in food packaging to improve mechanical properties

Used in film coating to preserve fruits and vegetables

In food preservation, the use of nanoparticles reduces gas permeation and reduces odor loss to increase food protection. Nano chitosan has been used in the preservation of foods such as fruits, vegetables, and meats, and its preservation effect is superior to chitosan preservation film to a certain extent. Please feel free to contact us for information about nano chitosan.