Preparation of cosmetic emulsion creams with enhanced antioxidant activity using a coffee-industry waste as an additive
Year: 2026
Type: article
Abstract: Within the framework of sustainable development and the circular economy, the use of coffee-silverskin (CS), a waste of the coffee industry, in the formulation of cosmetic creams was studied. Several methods were used to produce CS oil, as well as oily and aqueous extracts of coffee silverskin. Characterization was done using FT-IR spectroscopy, and composition analysis was carried out with GC-FID. The extracts showed notable sunscreen and antioxidant properties. Then, six different emulsion creams were formulated with these extracts, including a control, a hot olive oil extract, a cold olive oil extract, a water extract, and two with 3% and 6% CS oil, respectively. The study found that the creams were stable in terms of pH and viscosity, especially the ones with 3% and 6% CS oil, which had increased viscosity. The sun protection factor (SPF) of the creams ranged from 1.33 to 3.49, with all emulsions showing high antioxidant activity. The cream containing 6% CS oil had the highest SPF value. Additional tests assessed moisture content, volatile compounds, and the yellow-green color of the emulsions, revealing differences in brightness and intensity among the formulations. Overall, this research shows that not only waste can be repurposed, but sustainable products can also be created to meet the growing consumer demand for eco-friendly, naturally-derived skincare solutions. Using silverskin, a coffee industry by-product, in the formulation of cosmetic creams is significant due to its sustainable and economic benefits. Thus, not only wastes are reduced and repurposing materials that would otherwise be discarded promote environmental responsibility, but also valuable bioactive compounds present in coffee by-products can be capitalized. These compounds, such as antioxidants, caffeine, and essential fatty acids, enhance the effectiveness of cosmetic products by providing antioxidant and sun-protection properties. Consequently, incorporating coffee by-products into cosmetics aligns with the growing consumer demand for eco-friendly and naturally-derived skincare solutions, ultimately benefiting both the industry and the environment. • Coffee-industry wastes can be valorized in the preparation of cosmetic emulsion creams • Extracts were obtained from coffee silverskin (CS) a coffee-industry by-product, • Addition of CS extracts in the emulsion creams resulted in high antioxidant activity • The sun blocking activity, (SPF factor) of the creams ranged from 1.33 to 3.49
Institution: Aristotle University of Thessaloniki
Language: English
Topic: Skin Protection and Aging
Subfield: Dermatology
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $1,440
OpenAlex ID: W7160830669