دراسة حول استخلاص نبات البقلة المحلي (Portulaca Oleracea) وتقييم معامل الحماية من الشمس (SPF) للمستخلصات المائية والإيثانولية.

شعيب الأحمد; نوار بدور; زينة عنقة; سوسن شامي; محمد نصر الدين

doi:10.5281/zenodo.20267608

Authors

Dr. Shuaib alahmad Al Wataniya Private University
Nawar bdoor Al Wataniya Private University
Ziena anka Al Wataniya Private University
Sawsan chami Al Wataniya Private University
Mohammad naser aldeen Al Wataniya Private University

DOI:

https://doi.org/10.5281/zenodo.20267608

Keywords:

Portulaca Oleracea, Sun Protection Factor, UV, Extract

Abstract

Ultraviolet (UV) radiation is the primary cause of skin damage, premature aging, and skin cancer. Due to safety concerns regarding synthetic sunscreens, interest in natural plant ingredients has increased as safe alternatives to chemical sunscreens. Purslane (Portulaca oleracea) is known for its richness in phenolics and flavonoids, which possess excellent UV-absorbing properties.

This study evaluated Portulaca oleracea leaf and stem extracts (aqueous and alcoholic) via UV-vis spectroscopy (200–400 nm). Sun protection factor (SPF) values were calculated Using a reference method. The alcoholic leaf extract showed the highest SPF (40), followed by the aqueous leaf extract (SPF = 30). The stem extracts showed lower, but still good, activity (alcoholic: SPF = 20; aqueous: SPF = 12).

The results highlight purslane's potential as a natural sunscreen ingredient, particularly in alcoholic leaf extracts. Improved formulations could provide safer and more synergistic UV protection compared to chemical filters

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