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Development and evaluation of sunscreen creams containing morin-encapsulated nanoparticles for enhanced UV radiation protection and antioxidant activity

Authors Shetty PK, Venuvanka V, Jagani HV, Chethan G, Ligade V, Musmade PB, Nayak UY, Reddy MS, Kalthur G, Udupa N, Rao CM, Mutalik S

Received 23 June 2015

Accepted for publication 12 September 2015

Published 13 October 2015 Volume 2015:10(1) Pages 6477—6491


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Govarthanan Muthusamy

Peer reviewer comments 3

Editor who approved publication: Dr Thomas J Webster

Pallavi Krishna Shetty,1 Venkatesh Venuvanka,1 Hitesh Vitthal Jagani,1 Gejjalagere Honnappa Chethan,1 Virendra S Ligade,1 Prashant B Musmade,1 Usha Y Nayak,1 Meka Sreenivasa Reddy,1 Guruprasad Kalthur,2 Nayanabhirama Udupa,1 Chamallamudi Mallikarjuna Rao,1 Srinivas Mutalik1

1Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, 2Division of Clinical Embryology, Kasturba Medical College, Manipal University, Manipal, Karnataka, India

Abstract: The objective of present work was to develop novel sunscreen creams containing polymeric nanoparticles (NPs) of morin. Polymeric NPs containing morin were prepared and optimized. The creams containing morin NPs were also prepared and evaluated. Optimized NPs exhibited particle size of 90.6 nm and zeta potential of -31 mV. The entrapment efficiency of morin, within the polymeric NPs, was found to be low (12.27%). Fourier transformed infrared spectroscopy and differential scanning calorimetry studies revealed no interaction between morin and excipients. Transmission electron microscopy and atomic force microscopy revealed that the NPs were spherical in shape with approximately 100 nm diameter. Optimized NPs showed excellent in vitro free radical scavenging activity. Skin permeation and deposition of morin from its NPs was higher than its plain form. Different sunscreen creams (SC1–SC8) were formulated by incorporating morin NPs along with nano zinc oxide and nano titanium dioxide. SC5 and SC8 creams showed excellent sun protection factor values (≈40). In vitro and in vivo skin permeation studies of sunscreen creams containing morin NPs indicated excellent deposition of morin within the skin. Morin NPs and optimized cream formulations (SC5 and SC8) did not exhibit cytotoxicity in Vero and HaCaT cells. Optimized sunscreen creams showed excellent dermal safety. SC5 and SC8 creams demonstrated exceptional in vivo antioxidant effect (estimation of catalase, superoxide dismutase, and glutathione) in UV radiation-exposed rats. The optimized sunscreen creams confirmed outstanding UV radiation protection as well as antioxidant properties.

Keywords: nanoparticles, skin permeation, sunscreen, morin, sun protection factor

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