Pflanzenextrakte: Nachhaltige und multifunktionale kosmetische Inhaltsstoffe.

The cosmetics industry is undergoing a transformation driven by the demand for natural and sustainable ingredients. A study has examined various plant extracts derived from by-products of the agricultural and food industries. The results show that bark and tea residues have the highest reduction capacities and antioxidant activities. The extracts can block UV-A and a portion of visible light, with the exception of fruit peel and nut shell extracts. These findings provide insights into the properties and potential applications of these natural extracts. It is emphasized that the sustainable use of by-products in the food and agricultural industries is important for reducing waste and environmentally friendly resource utilization. Another study examines the extraction and characterization of tannins from various by-products. The results show different properties of the extracts and confirm the UV absorption properties of certain plant ingredients. Tannin extracts can be used as multifunctional ingredients in the cosmetics industry to enhance the antioxidant and UV-absorbing effects of products. Potential applications of tannins in the cosmetics industry and as natural UV protection are also discussed. The authors of the article are Sandra Kiese, Arielle Springer, and Daniela Leistl from the Fraunhofer Institute for Process Engineering and Packaging IVV in Germany. [Extracted from the article]