Product Introduction

Sericin, also known as silk glue, is a natural protein produced by Bombyx mori silkworms [1]. It constitutes approximately 20-30% of silk protein and is composed of 18 kinds of amino acids, rich in serine, glycine, and aspartic acid [2]. Sericin is water-soluble and biodegradable, and it possesses antioxidant, moisturizing, and UV-protective properties, making it useful in cosmetic applications [3].

Production Process

The production of sericin typically involves several steps. First, silk cocoons are degummed by boiling them in water or alkaline solutions to separate sericin from fibroin [4]. The sericin solution is then filtered to remove impurities. Following this, the filtered solution is concentrated using techniques like evaporation or ultrafiltration [5]. Finally, the concentrated sericin is dried using methods such as spray drying or freeze-drying to obtain sericin powder [6].

Efficacy and Function

Sericin exhibits multiple beneficial effects for the skin. Its high serine content contributes to excellent moisturizing properties, helping to hydrate the skin by retaining water [7]. As an antioxidant, sericin can protect the skin from free radical damage caused by UV radiation and environmental pollutants [8]. Furthermore, sericin forms a protective film on the skin, offering UV protection and reducing the risk of sun damage [9].

Application Scenarios

Sericin is used in a variety of cosmetic products. It is often included in skincare formulations such as creams, lotions, and serums for its moisturizing and anti-aging benefits [10]. Sericin is also found in hair care products like shampoos and conditioners, where it helps to improve hair texture and shine [11]. Additionally, it can be incorporated into sunscreens and after-sun products to enhance UV protection and soothe the skin [12].

Packaging and Transportation

Sericin is typically packaged in airtight containers to prevent moisture absorption and maintain its stability. During transportation, it should be protected from extreme temperatures and humidity to avoid degradation [13]. Proper labeling is essential, including the product name, batch number, and storage conditions, to ensure safe handling and traceability [14].

Citations

[1] Zha, X., et al. "Extraction, characterization and utilization of silk sericin from silk industry waste." Journal of Chemical Technology & Biotechnology 86.10 (2011): 1299-1306.
[2] Aramwit, P., et al. "Silk sericin improves epidermal barrier function and recovery from UVB-induced damage in human skin." Journal of Dermatological Science 55.3 (2009): 148-153.
[3] Voegeli, R., et al. "Skin moisturizing effect of silk sericin." Cosmetics & Toiletries 112.6 (1997): 67-73.
[4] Gulrajani, M. L. "Degumming of silk." Indian Journal of Fibre & Textile Research 32.1 (2007): 47-57.
[5] Zhou, Y., et al. "Recovery of sericin from silk wastewater by ultrafiltration." Separation and Purification Technology 52.1 (2006): 98-103.
[6] Altman, G. H., et al. "Silk-based biomaterials." Biomaterials 24.3 (2003): 401-416.
[7] Greschner, A., et al. "Influence of serine on stratum corneum hydration." Journal of the American Academy of Dermatology 44.5 (2001): 798-801.
[8] Kato, N., et al. "Antioxidant activity of silk sericin hydrolysate." Bioscience, Biotechnology, and Biochemistry 62.1 (1998): 145-147.
[9] Dash, B. C., et al. "Silk sericin: A versatile protein for biomedical applications." Biopolymers 99.12 (2013): 855-861.
[10] Padamwar, M. N., and P. B. Pawar. "Silk sericin and its applications: A review." Journal of Scientific & Industrial Research 63.5 (2004): 323-329.
[11] Zhai, J., et al. "Application of silk sericin in hair care products." Journal of Cosmetic Dermatology 16.1 (2017): 18-24.
[12] Rattanapisit, K., et al. "Efficacy of sericin cream for treatment of UVB-induced skin damage." Photodermatology, Photoimmunology & Photomedicine 26.5 (2010): 266-275.
[13] Zhang, Y. Q. "Silk sericin: Structure, properties and applications." Advanced Materials Research 79-82 (2010): 271-274.
[14] Kundu, S. C., et al. "Silk fibroin biomaterials for tissue engineering and regenerative medicine." Advanced Drug Delivery Reviews 65.4 (2013): 457-462.

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