Effects of the novel poly(methyl methacrylate) (PMMA)-encapsulated organic ultraviolet (UV) filters on the UV absorbance and in vitro sun protection factor (SPF)

Wu, Pey-Shiuan; Huang, Lan-Ni; Guo, Yi-Cing; Lin, Chih-Chien

doi:10.1016/j.jphotobiol.2014.01.006

Cited by 38 publications

(18 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Indeed, it was indicated that high dispersity could improve photoprotective property [27] . This method was proposed to ensure an adequate efficacy of the sun blockers.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and Characterization of Microcapsules Encapsulating Octyl Methoxycinnamate by Complex Coacervation

Zhao¹

2016

ijps

View full text Add to dashboard Cite

Zhao, et al.,: Octyl Methoxycinnamate-loaded MicrocapsulesThe aim of this study was to entrap the lipophilic ultraviolet absorber, octyl methoxycinnamate in microcapsuels to enhance its application. A complex coacervation method was established. Through the appearance of encapsulated glass beads prepared with different wall materials, gelatin and sodium polyphosphate were selected as wall materials because of dense structure and less adhesion. The effects of three variables, core/ (core+wall) ratio, pH at complex coacervation, and amount of cross-linking agent, on encapsulation efficiency were studied. Response surface methodology was employed to optimize the technology, and a polynomial regression model equation was generated. The optimization method enabled to predict the response variable value within the experimental range with good agreement between the predicted and experimental values. The microcapsules under the optimized conditions appeared spherical in shape with smooth nonporous surface and no tendency to aggregation. The photodegradation percentage of octyl methoxycinnamate after exposing to ultraviolet irradiation was determined and the transdermal permeation pattern of octyl methoxycinnamate and its photodegradation product from various formulations was estimated in vitro. From the results obtained, the microcapsules had achieved decreasing transdermal permeation of octyl methoxycinnamate and its photodegradation product, enhancing the accumulation of the sunscreen at the administration site, and then increasing the protection effect and safety. This study revealed the potential of sunscreen microcapsules as new skin drug delivery systems.

show abstract

“…Indeed, it was indicated that high dispersity could improve photoprotective property [27] . This method was proposed to ensure an adequate efficacy of the sun blockers.…”

Section: Resultsmentioning

confidence: 99%

“…Porcine ear skins were used as the in vitro model for this study, because its essential permeation characteristics were similar with human skin [26,27] . The percutaneous absorption experiment of the four creams was performed through a drug transdermal diffusion absorption apparatus (Huanghai, model RYJ-6A, China).…”

Section: Transdermal Permeation Experimentmentioning

confidence: 99%

Preparation and Characterization of Microcapsules Encapsulating Octyl Methoxycinnamate by Complex Coacervation

Zhao¹

2016

ijps

View full text Add to dashboard Cite

show abstract

“…6 Analytical methods that have been previously reported for the in vitro determination of SPF include the use of UV spectrophotomer, 2 mass spectrometry, 7 and ultraviolet transmittance analyzer. 8 Based on ease of operation, affordability, availability and small sample size required, UV spectrophotometer was selected as a technique of choice in the current study for the rapid determination of SPF in natural clay material and clay-based formulated cosmetic products.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Madikizela¹,

Nkwentsha²,

Mlunguza³

et al. 2017

S.Afr.j.chem.

View full text Add to dashboard Cite

Clay has been widely used as photo protectants in rural places of South Africa. Recently, there are wide range of products which are marketed in South Africa as clay cosmetics which are used for photo protection. In this work, in vitro determination of the sun protection factor (SPF) of newly formulated cosmetics produced from natural clay material from the Bizana region in the Eastern Cape Province of South Africa was performed by spectrophotometric means. The SPF values found for clay material, face cream, foundation, face mask and scrub were 1.18, 18.33, 13.71, 6.74 and 9.53, respectively. The same materials were characterized using thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscope (SEM) equipped with energy dispersive spectrometry (EDS) and inductively coupled plasma (ICP). Based on FTIR, XRD, XRF and SEM-EDS results, kaolinite, goethite and quartz were the major minerals found in the clay. Toxic elements such as mercury and cadmium were not detected during ICP analysis; however, traces of lead (0.72-2.14 mg kg -1 ) and arsenic (0.49-0.69 mg kg -1 ) were found in cosmetic products. The results obtained in this study indicate that the cosmetic products manufactured from clay have sun protection ability. KEYWORDSSun protection factor, cosmetic products, natural clay material.

show abstract

“…The sun protection factor (SPF) is the universal indicator for describing the efficiency of sunscreen products. The in vitro method correlates well with the in vivo tests because it relates the absorbance of the substance with the erythematogenic effect of radiation and intensity of light at specific wavelenghs between 290 and 320 nm [43][44][45][46][47][48].…”

Section: Sun Protector Factor Determinationmentioning

confidence: 99%

Photoprotection by Punica granatum seed oil nanoemulsion entrapping polyphenol-rich ethyl acetate fraction against UVB-induced DNA damage in human keratinocyte (HaCaT) cell line

Baccarin

Mitjans

Ramos³

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

View full text Add to dashboard Cite

show abstract

Effects of the novel poly(methyl methacrylate) (PMMA)-encapsulated organic ultraviolet (UV) filters on the UV absorbance and in vitro sun protection factor (SPF)

Cited by 38 publications

References 23 publications

Preparation and Characterization of Microcapsules Encapsulating Octyl Methoxycinnamate by Complex Coacervation

Preparation and Characterization of Microcapsules Encapsulating Octyl Methoxycinnamate by Complex Coacervation

Physicochemical characterization and In vitro evaluation of the sun protection factor of cosmetic products made from natural clay material

Photoprotection by Punica granatum seed oil nanoemulsion entrapping polyphenol-rich ethyl acetate fraction against UVB-induced DNA damage in human keratinocyte (HaCaT) cell line

Contact Info

Product

Resources

About