Carrageenan is a naturally occurring polysaccharide extracted from red seaweed species, primarily Kappaphycus alvarezii and Eucheuma denticulatum, known for their gelling and thickening properties [1]. It is a versatile ingredient widely used in the food, pharmaceutical, and cosmetic industries due to its ability to form gels, stabilize emulsions, and provide texture to various products.

The production process of carrageenan involves several steps, beginning with the harvesting of red seaweed, followed by cleaning to remove impurities such as sand and epiphytes [2]. The cleaned seaweed then undergoes alkaline treatment, typically using potassium hydroxide or sodium hydroxide, to enhance the gelling properties of the carrageenan [3]. After alkaline treatment, the seaweed is washed to remove excess alkali, and the carrageenan is extracted using hot water. The extract is then filtered to remove any remaining solids and concentrated through evaporation. Finally, the carrageenan is dried, milled into a powder, and standardized to meet specific quality requirements before being packaged for distribution [4].

Carrageenan is valued in cosmetics for its multiple benefits, functioning primarily as a thickening agent, which enhances the viscosity and texture of formulations. As a gelling agent, carrageenan contributes to the formation of stable gels, providing structure and stability to products such as creams, lotions, and masks, and its stabilizing properties help to prevent the separation of ingredients in emulsions, ensuring a homogenous and appealing product. Certain studies also suggest that carrageenan possesses moisturizing properties, which can improve skin hydration and reduce dryness [5].

In application scenarios, carrageenan can be employed in various cosmetic formulations, including facial masks, where it provides a smooth and easily applied texture. It is also used in creams and lotions to improve viscosity and stability, enhancing the overall sensory experience. Shampoos and conditioners benefit from carrageenan’s thickening properties, which aid in delivering a more luxurious feel and improved performance. Finally, in toothpaste, carrageenan acts as a binder and stabilizer, ensuring the uniform dispersion of ingredients and preventing separation [6].

For packaging, carrageenan is typically packaged in multi-layer paper bags or fiber drums with polyethylene liners to prevent moisture absorption and maintain product quality. During transportation, it should be stored in a cool, dry environment, away from direct sunlight and extreme temperatures, to prevent degradation and maintain its thickening and gelling properties. Proper handling and storage are essential to ensure that carrageenan retains its functional properties and remains effective throughout its shelf life [7].

Citations

[1] Campo, V. L., Kawano, D. F., da Silva, D. B., & Carvalho, I. (2009). Carrageenans: Biological properties, chemical modifications and structural analysis – A review. Carbohydrate Polymers, 77(2), 167-180.

[2] Pereira, L. (2018). Seaweed as a Source of Bioactive Substances and Skin Therapies Cultivation and Improvement. CRC Press.

[3] Necas, J., & Bartosikova, L. (2013). Carrageenan: a review. Veterinarni Medicina, 58(4), 187-205.

[4] Van de Velde, F., De Ruiter, G. A., Sims, I. M., & Ridout, M. J. (2002). The effect of potassium on the gelling and rheological properties of κ-carrageenan. Food Hydrocolloids, 16(4), 363-372.

[5] Thomsen, B. S., & Hansen, K. K. (2018). Carrageenan. In Handbook of Food Structure Engineering (pp. 337-361). Springer, Cham.

[6] Pickering, G., and Robert, E. (2015). Stabilizing and thickening agents for food. Woodhead Publishing Series in Food Science, Technology and Nutrition, 51-78.

[7] Imeson, A. (2010). Food stabilisers, thickeners and gelling agents. John Wiley & Sons.

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