Purification of Agro Waste Saffron Using Membrane Technology-Ultrafiltration-Application to Sunscreen Cosmetic Emulsions

Abstract

In this present work, ultrafiltration was applied for the purification of agro waste Greek red saffron. The agro waste saffron (before and after ultrafiltration) was used for the preparation of oilin-water emulsions. Produced emulsions were examined for their viscosity, pH and conductivity during time. Also surface tension values of the aqueous and oily phase of the emulsions were measured. Saffron is known for its antioxidant and anti-solar properties. Anti-solar activity of saffron was evaluated by measuring the SPF value of the emulsion. UV-Vis measurements have shown an incredible increase of the absorption of saffron after ultrafiltration. The emulsions made with the purified saffron presented a better anti-solar activity and at the same time remarkably improvement of their antioxidant and antiaging properties giving a very promising alternative to the cosmetic industry.

Penentuan Sun Protection Factor (SPF) dan Antioksidan Ekstrak Alga Hijau (Ulva reticulata Forsskal) sebagai Tabir Surya dengan Spektrofotometer UV-Vis

“…Penelitian ini dilakukan untuk mengetahui potensi Alga hijau (Ulva reticulata Forsskal) sebagai tabir surya menggunakan spektrofotometer UV-Vis, dengan metode seperti yang telah dikembangkan oleh Mansur et al 1986. Persamaan Mansur digunakan untuk menentukan nilai SPF ekstrak alga hijau (Zarkogianni & Nikolaidis, 2016;Swathimol et al, 2022) Berdasarkan data penelitian diketahui alga hijau mengandung metabolit sekunder seperti senyawa flavonoid, tanin, alkaloid, tokoferol dan melatonin yang berperan sebagai antioksidan alami dari alga, yang berperan sebagai antibakteri, antikanker, antifungi, kandungan golongan senyawa yang terdapat dalam ekstrak etanol alga hijau yaitu flavonoid, tanin, alkaloid, tokoferol dan melatonin (Lestari & Mita, 2013). Potensi alga hijau perlu diteliti agar dapat dimanfaatkan secara luas sebagai salah satu sumber bahan baku farmasi termasuk sebagai tabir surya.…”

“…Senyawa aktif yang terdapat di dalam alga hijau seperti gugus aromatik senyawa fenolik diduga memiliki kemampuan menyerap sinar UV dan memiliki aktivitas antioksidan (Zarkogianni & Nikolaidis, 2016).…”

Phytochemical Screening and Antioxidant Activity of Seven Native Species Growing in the Forests of Southern Chilean Patagonia

“…Tyrosinase is a copper-containing glycoprotein. This enzyme is the rate-limiting for melanin biosynthesis pathway [55]. It catalyzes the L-tyrosine oxidation to L-DOPA, and its subsequent oxidation to DOPA quinone (dopachrome).…”

“…Irregular skin hyperpigmentation is caused by abnormal distribution or excessive production of melanin. For this reason, tyrosinase inhibitors are being sought to improve or prevent hyperpigmentary disorders, such as age spots and melasma [55]. The medical and cosmetic industries are interested in finding new tyrosinase inhibitors to treat and prevent skin disorders.…”