Potential Cosmeceutical Applications and Evaluation of Human Skin Irritation of Tagetes erecta L. Flower Extract

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Abstract
Pharmacognosy Research,2021,13,4,199-207.
Published:October 2021
Type:Original Article
Authors:
Author(s) affiliations:

Catheleeya Mekjaruskul1,*, Supakanya Kumkarnjana1, Niramai Fangkrathok2, Worapol Kengkittipat1, Nuttawut Sirichat1

1Faculty of Pharmacy, Mahasarakham University, Kantharawichai, Maha Sarakham, THAILAND.

2Faculty of Agricultural Technology, Burapha University, Sakaeo Campus, Watthana Nakhon, Sa Kaeo, THAILAND.

Abstract:

Background: Tagetes erecta L. has been traditionally used for treatment of skin diseases. Objectives: This study aimed to evaluate in vitro skin anti-aging, antioxidant, antibacterial activities, and human skin irritation of T. erecta flower extract for development as a cosmeceutical skin product using aqueous, 50%, and 95% ethanolic extracts of T. erecta flower. Methods: Total phenolic content was defined. Quantitative analysis of syringic acid was determined by using HPLC. Antioxidant activities were performed by measurement of 2,2-diphenyl 1-pichylhydazyl free radical scavenger. Anti-aging assays were monitored inhibitory effects on tyrosinase, elastase, hyaluronidase, and collagenase activities. Antibacterial effects against Staphylococcus aureus and Staphylococcus epidermidis was also investigated. The extract was formulated as a lotion and its stability study was evaluated and human skin irritation tests were performed. Results: The 95% ethanolic extract had significantly higher total phenolic content and syringic acid content than the other extracts. The 95% ethanolic extract also had stronger inhibitory activities on DPPH scavenging and against tyrosinase, elastase and hyaluronidase enzyme activities than those of 50% ethanolic or water extracts. The 95% ethanolic extracts showed a better antibacterial activity against S. aureus and S. epidermidis. The developed lotion containing 1% of T. erecta extract using 95% ethanol was stable. Moreover, skin irritation was not observed in healthy volunteers after applying the T. erecta lotion. Conclusion: This study indicates that T. erecta flower extracts, especially a 95% ethanolic extract, are potential sources for development of cosmeceutical skin products against enzymes/reactions responsible for skin aging and bacterial skin infection.

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Potential Cosmeceutical Applications and Evaluation of Human Skin Irritation of Tagetes erecta L. Flower Extract

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