Antioxidant properites and development of liquid body soap containing pomelo (Citrus maxima Burm.f.) Merr.) peel extract

Rattana  Panriansaen; Pornchita  Wutth; Nutthakamol  Naksep; Wayu  Phudang

Rattana Panriansaen Suan Sunandha Rajabhat University, Thailand
Pornchita Wutth College of Allied Health Sciences, Suan Sunandha Rajabhat University, Samut Songkram, Thailand
Nutthakamol Naksep College of Allied Health Sciences, Suan Sunandha Rajabhat University, Samut Songkram, Thailand
Wayu Phudang College of Allied Health Sciences, Suan Sunandha Rajabhat University, Samut Songkram, Thailand

Keywords: Pomelo peel extract, antioxidant activity, liquid body soap

Abstract

This study aimed to (1) evaluate the antioxidant properties of pomelo peel extract, (2) develop a liquid body soap containing pomelo peel extract, and (3) assess user satisfaction with the formulated products . The pomelo peel extract exhibited potent antio xidant activity with an IC₅₀ value of 0 .49 ± 0.09 μg/mL, significantly lower than that of vitamin E (133.27 ± 13 .97 μg/mL). Four liquid soap formulations containing pomelo peel extract (0%, 1%, 3%, and 5 %) were produced and subjected to Stability testing under accelerated temperature cycling (4 °C and 40 °C). All formulations remained physically stable, with only minor changes in pH and viscosity . A Closed Patch Test on 20 volunteers revealed no signs of irr itation for any formulation, confirming dermatological safety . Consumer satisfaction scores ranged from 4 .0 to 4.2, with the 3 % extract formulation achieving the highest acceptance . The results indicate that pomelo peel extract is a promising natural antio xidant suitable for incorporation into stable, consumer-accepted liquid soap formulations.