Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen

The purpose this study is to develop sunscreen gel formulation with P. oleracea extract which contain natural bioactive and chemical compounds contribute to healthy skin and avoid skin to expose from dangerous UV rays. The main active compound of P. Oleracea is identified contains high levels of vit...

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Main Author:	Wan Ishak @ Wan Ahmad, Wan Rosidah
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/101699/1/WanRosidahWaNIshakMSChE2022.pdf.pdf
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id	my-utm-ep.101699
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spelling	my-utm-ep.1016992023-07-03T07:52:17Z Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen 2022 Wan Ishak @ Wan Ahmad, Wan Rosidah TP Chemical technology The purpose this study is to develop sunscreen gel formulation with P. oleracea extract which contain natural bioactive and chemical compounds contribute to healthy skin and avoid skin to expose from dangerous UV rays. The main active compound of P. Oleracea is identified contains high levels of vitamins E, C, and beta carotene which compounds that have high antioxidant. In this study, three different formulations were carried out with different concentrations of P. oleracea extract (0.0%, 5.0% and 10.00%). All samples were analysed with DPPH assay using 2,2-diphenyl-1-picrylhydrazyl (DPPH Free Radical Scavenging Activity). The free radical scavenging activities of the extracts was determined and sunscreen with contains of highest percentage of P. Oleracea (10.0%) showed higher antioxidant activity comparing to sunscreen without P. oleracea extract and with 5.0% of P. oleracea extract. This sunscreen is formulated with sensorial experience which provide high protection from UV and leave a non-sticky on the skin. Sensory analysis findings revealed sunscreen with 10.0% P. oleracea extract is the most preferred among panellists. Sunscreen gel without P. oleracea extract was the most preferred formulation on the parameters of color and aroma. The colour and aroma of the formula is mostly preferred due to the absence of P. oleracea extract which is brown in colour and the original extract have unpleasant smell. Stability test of the sample is also performed to ensure the formulation is stable for a long time. Microbial analysis has been identified for formula with P. oleracea extract 10% because it has been preferred from panellist. This is to determine total plate count and total yeast and mold which have not detected in the sample. 2022 Thesis http://eprints.utm.my/id/eprint/101699/ http://eprints.utm.my/id/eprint/101699/1/WanRosidahWaNIshakMSChE2022.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:152264 masters Universiti Teknologi Malaysia Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Wan Ishak @ Wan Ahmad, Wan Rosidah Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
description	The purpose this study is to develop sunscreen gel formulation with P. oleracea extract which contain natural bioactive and chemical compounds contribute to healthy skin and avoid skin to expose from dangerous UV rays. The main active compound of P. Oleracea is identified contains high levels of vitamins E, C, and beta carotene which compounds that have high antioxidant. In this study, three different formulations were carried out with different concentrations of P. oleracea extract (0.0%, 5.0% and 10.00%). All samples were analysed with DPPH assay using 2,2-diphenyl-1-picrylhydrazyl (DPPH Free Radical Scavenging Activity). The free radical scavenging activities of the extracts was determined and sunscreen with contains of highest percentage of P. Oleracea (10.0%) showed higher antioxidant activity comparing to sunscreen without P. oleracea extract and with 5.0% of P. oleracea extract. This sunscreen is formulated with sensorial experience which provide high protection from UV and leave a non-sticky on the skin. Sensory analysis findings revealed sunscreen with 10.0% P. oleracea extract is the most preferred among panellists. Sunscreen gel without P. oleracea extract was the most preferred formulation on the parameters of color and aroma. The colour and aroma of the formula is mostly preferred due to the absence of P. oleracea extract which is brown in colour and the original extract have unpleasant smell. Stability test of the sample is also performed to ensure the formulation is stable for a long time. Microbial analysis has been identified for formula with P. oleracea extract 10% because it has been preferred from panellist. This is to determine total plate count and total yeast and mold which have not detected in the sample.
format	Thesis
qualification_level	Master's degree
author	Wan Ishak @ Wan Ahmad, Wan Rosidah
author_facet	Wan Ishak @ Wan Ahmad, Wan Rosidah
author_sort	Wan Ishak @ Wan Ahmad, Wan Rosidah
title	Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
title_short	Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
title_full	Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
title_fullStr	Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
title_full_unstemmed	Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
title_sort	antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2022
url	http://eprints.utm.my/id/eprint/101699/1/WanRosidahWaNIshakMSChE2022.pdf.pdf
_version_	1776100750836891648

Antioxidant capacity, physicochemical properties and stability of portulaca oleracea extract gel sunscreen

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