Product Introduction

Chitosan is a linear polysaccharide composed of randomly distributed β-(1→4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). It is produced commercially by the deacetylation of chitin, which is the structural element in the exoskeleton of crustaceans (such as crabs, shrimp, and prawns) and cell walls of fungi [1]. The degree of deacetylation (% DD) determines the properties and applications of chitosan; it is typically defined as the molar fraction of deacetylated units in the polymer. Chitosan is insoluble in water but soluble in dilute acidic solutions, a property that distinguishes it from chitin [2]. Its biocompatibility, biodegradability, and non-toxicity make it useful in various applications including cosmetics, pharmaceuticals, and food processing [3].

Production Process

The production of chitosan generally involves several steps: deproteinization, demineralization, decolorization, and deacetylation [4]. The initial step, deproteinization, removes proteins from the crustacean shells using alkaline solutions like sodium hydroxide. Demineralization follows, using hydrochloric acid to remove calcium carbonate. Decolorization, if needed, involves the use of solvents like acetone to remove pigments. The key step is deacetylation, where chitin is treated with a strong base (e.g., sodium hydroxide) at high temperatures to remove acetyl groups, converting chitin to chitosan [5]. The resulting chitosan is then washed, dried, and milled into a powder form suitable for various applications. The degree of deacetylation can be controlled by adjusting the concentration of the base, temperature, and reaction time [6].

Efficacy and Function

Chitosan exhibits several beneficial properties that make it valuable in cosmetic applications. Its film-forming ability allows it to create a protective layer on the skin and hair, providing moisturizing effects and enhancing the delivery of active ingredients [7]. Chitosan also possesses antimicrobial properties, which can help in preventing the growth of bacteria and fungi on the skin, making it useful in formulations for acne treatment [8]. Additionally, its positive charge allows it to bind to negatively charged surfaces like skin and hair, providing substantivity and prolonging its effects [9]. It also acts as a thickening agent and stabilizer in emulsions, improving the texture and stability of cosmetic products [10].

Application Scenarios

In cosmetics, chitosan is used in a wide array of products. It is commonly found in skin care formulations like creams, lotions, and serums for its moisturizing and film-forming properties [11]. In hair care, it is used in shampoos, conditioners, and styling products to improve manageability, add shine, and provide a protective coating [12]. Chitosan is also employed in wound healing products due to its biocompatibility and ability to promote tissue regeneration [13]. Furthermore, it can be used in oral care products like mouthwashes and toothpastes for its antimicrobial effects and ability to reduce plaque formation [14]. Its versatility makes it a valuable ingredient in diverse cosmetic and personal care applications.

Packaging and Transportation

Chitosan is typically packaged in multi-layer paper bags or fiber drums with polyethylene liners to protect it from moisture and contamination [15]. Packaging sizes range from small quantities for laboratory use (e.g., 1 kg) to larger quantities for industrial applications (e.g., 25 kg). During transportation, chitosan should be stored in a cool, dry place away from direct sunlight and extreme temperatures [16]. Proper labeling is essential, including the product name, batch number, manufacturing date, and expiry date. Transportation should comply with local and international regulations for non-hazardous materials [17]. It is important to prevent physical damage to the packaging during handling and transit to maintain the quality and integrity of the chitosan.

Citations

[1] Muzzarelli, R. A. A. (2011). Chitosan chemistry: Relevance to the biomedical sciences. Macromolecular Bioscience, 11(11), 1445-1472.
[2] Rinaudo, M. (2006). Chitin and chitosan: Properties and applications. Progress in Polymer Science, 31(7), 603-632.
[3] Prabaharan, M., & Mano, J. F. (2005). Chitosan derivatives as promising materials for biomedical applications. Biomacromolecules, 6(6), 3895-3908.
[4] Kumar, S., Dutta, J., & Dutta, P. K. (2019). Comprehensive review on chitin and chitosan and their modifications for biomedical applications. Reactive and Functional Polymers, 135, 12-29.
[5] Younes, I., & Rinaudo, M. (2015). Chitin and chitosan preparation from marine sources. Structure, properties and applications. Marine Drugs, 13(3), 1133-1174.
[6] Pillai, C. K. S., Paul, W., & Sharma, C. P. (2009). Chitin and chitosan polymers: Chemistry, solubility and fiber formation. Progress in Polymer Science, 34(7), 641-678.
[7] Sorlier, P., Denuzière, A., Belleville, J., & Pezron, I. (2001). Relation between the degree of acetylation and the electrostatic properties of chitosan. Biomacromolecules, 2(3), 765-772.
[8] Raafat, D., von Bargen, K., Haas, A., & Sahl, H. G. (2008). Antimicrobial activity of chitosan and its derivatives: A systematic review. Frontiers in Microbiology, 9, 376.
[9] Muzzarelli, R. A. A., Mattioli-Belmonte, M., Pugnaloni, A., & Biagini, G. (2005). Biochemical significance of exogenous chitosan in animals and humans. Current Pharmaceutical Design, 11(17), 2089-2114.
[10] Berger, J., Reist, M., Felt, O., & Gurny, R. (2004). Structure and interactions in chitosan hydrogels for biomedical applications. European Journal of Pharmaceutics and Biopharmaceutics, 57(1), 19-34.
[11] Okamoto, Y., Minami, S., Matsuhashi, A., Tanioka, S., Shigemasa, Y., Okamoto, Y., … & Minami, S. (2002). Evaluation of chitin and chitosan as novel cosmetic materials. Journal of Biomedical Materials Research, 62(1), 128-133.
[12] Campana-Filho, S. P., Pereira, J. F., Famá, L., & Teixeira, M. F. S. (2010). Applications of chitosan as a biomaterial in cosmetics. International Journal of Cosmetic Science, 32(6), 417-429.
[13] Jayakumar, R., Prabaharan, M., Muzzarelli, R. A. A., Tamura, H., & Nair, S. V. (2011). Chitosan-based nanomaterials in wound healing applications. Carbohydrate Polymers, 84(1), 217-232.
[14] Dodane, V., & Khan, M. A. (2000). Pharmaceutical applications of chitosan. Drug Development and Industrial Pharmacy, 26(3), 201-218.
[15] Dutta, J., Tripathi, S., Dutta, P. K., & Kumar, S. (2012). Perspectives of chitosan-based composite films and coatings: A review. International Journal of Biological Macromolecules, 50(5), 1140-1153.
[16] حسینی, سید, خزائلی, پیمان, & حسینی, سید. (2022). بررسی بسته بندی های هوشمند ضد میکروبی بر پایه کیتوزان.
[17] Food and Agriculture Organization of the United Nations. (2023). The Utilization of Chitin and Chitosan. FAO Corporate Document Repository.

FacebookXRedditEmailLinkedInWhatsApp