Publication: Development of piperic acid derivatives from Piper nigrum as UV protection agents
4
Issued Date
2015-04-01
Resource Type
ISSN
17445116
13880209
13880209
Other identifier(s)
2-s2.0-84921935094
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Pharmaceutical Biology. Vol.53, No.4 (2015), 477-482
Suggested Citation
Piyapong Choochana, Jirapan Moungjaroen, Nathjanan Jongkon, Wandee Gritsanapan, Prasan Tangyuenyongwatana Development of piperic acid derivatives from Piper nigrum as UV protection agents. Pharmaceutical Biology. Vol.53, No.4 (2015), 477-482. doi:10.3109/13880209.2014.924020 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/35477
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Development of piperic acid derivatives from Piper nigrum as UV protection agents
Abstract
© 2014 Informa Healthcare USA, Inc. Context: There is a need for the discovery of novel natural and semi-synthetic sunscreen that is safe and effective. Piperine has a UV absorption band of 230-400nm with high molar absorptivity. This compound has a high potential to be developed to sunscreen. Objective: This study develops new UV protection compounds from piperine by using chemical synthesis. Materials and methods: Piperine was isolated from Piper nigrum L. (Piperaceae) fruits, converted to piperic acid by alkaline hydrolysis, and prepared as ester derivatives by chemical synthesis. The piperate derivatives were prepared as 5% o/w emulsion, and the SPF values were evaluated. The best compound was submitted to cytotoxicity test using MTT assay. Results: Piperic acid was prepared in 86.96% yield. Next, piperic acid was reacted with alcohols using Steglich reaction to obtain methyl piperate, ethyl piperate, propyl piperate, isopropyl piperate, and isobutyl piperate in 62.39-92.79% yield. All compounds were prepared as 5% oil in water emulsion and measured its SPF and UVA/UVB values using an SPF-290S analyzer. The SPF values (n=6) of the piperate derivatives were 2.68± 0.17, 8.89±0.46, 6.86± 0.91, 16.37±1.8, and 9.68± 1.71. The UVA/UVB ratios of all compounds ranged from 0.860 to 0.967. Cytotoxicity of isopropyl piperate was evaluated using human skin fibroblast cells and the IC50was equal to 120.2 μM. Discussion and conclusion: From the results, isopropyl piperate is an outstanding compound that can be developed into a UV protection agent.