Investigation of water-soluble elastin as a multifunctional cosmetic material: Moisturizing and whitening effects

Asako Inoue, Tomohiro Hikima, Suguru Taniguchi, Takeru Nose, Iori Maeda

Research output: Contribution to journalArticle

Abstract

Elastin and collagen are extracellular matrix proteins that are widely distributed in the body. Although elastin essentially functions as a skin moisturizer, there have been few reports on its other fundamental chemical and biological functions. In this study, we investigated the moisturizing and whitening (tyrosinase inhibition) effects of elastin to examine its usefulness as a cosmetic material. Water-soluble hot alkali pig aorta (HAPA)- elastin was prepared from pig aorta using the hot alkali method. HAPA-elastin showed a widely distributed molecular weight and had a coacervation property that mediated reversible self-assembly of its molecules with increasing temperature. Amino acid analysis of HAPA-elastin showed a high content (81.5%) of hydrophobic amino acids such as Gly, Ala, Val, and Pro. Des (desmosine) and Ide (isodesmosine), which are characteristic amino acids of elastin, accounted for more than 0.4% of the total amino acid content. HAPA-elastin showed a moisture-retaining property. The water content of skin samples treated with and without HAPA-elastin was 77.2% ± 7.8% and 49.4% ± 10.1%, respectively. HAPA-elastin also inhibited tyrosinase activity by 11.3% ± 3.9%. The results obtained indicate that elastin has a useful function as a cosmetic material.

Original languageEnglish
Pages (from-to)11-23
Number of pages13
JournalJournal of Cosmetic Science
Volume68
Issue number1
Publication statusPublished - Jan 1 2017

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Dermatology

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