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| Manaia,Eloísa Berbel; Kaminski,Renata Cristina Kiatkoski; Corrêa,Marcos Antonio; Chiavacci,Leila Aparecida. |
| Nowadays, concern over skin cancer has been growing more and more, especially in tropical countries where the incidence of UVA/B radiation is higher. The correct use of sunscreen is the most efficient way to prevent the development of this disease. The ingredients of sunscreen can be organic and/or inorganic sun filters. Inorganic filters present some advantages over organic filters, such as photostability, non-irritability and broad spectrum protection. Nevertheless, inorganic filters have a whitening effect in sunscreen formulations owing to the high refractive index, decreasing their esthetic appeal. Many techniques have been developed to overcome this problem and among them, the use of nanotechnology stands out. The estimated amount of nanomaterial in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Skin cancer; Sunscreen; Inorganic UV filter. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200002 |
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| Chiari-Andréo,Bruna Galdorfini; Trovatti,Eliane; Marto,Joana; Almeida-Cincotto,Maria Gabriela José de; Melero,Ana; Corrêa,Marcos Antonio; Chiavacci,Leila Aparecida; Ribeiro,Helena; Garrigues,Teresa; Isaac,Vera Lucia Borges. |
| ABSTRACT Guava (Psidium guajava L.) is a native fruit of the American tropics with commercial applications for its taste, flavor and aroma. Numerous pharmacological uses have been described for it, such as the antiseptic effect of its leaves, the use of the fresh fruit and tea from its leaves for the treatment of diarrhea, dysentery, diabetes mellitus, and others. However, considering its rich composition, the guava also is a potential source of antioxidants to be used in the development of new formulations for cosmetic and/or dermatological applications, the main focus of this research. Herein, we describe the study of the phytochemical composition and the antioxidant activity of a guava extract prepared with non-toxic solvents aiming its use at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P. guajava L./phytochemistry; P. guajava L./use in cosmetics; P. guajava L./antioxidant/chemical composition; P. guajava L/chemical stability; High Performance Liquid Chromatography. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200612 |
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| Rissi,Nathalia Cristina; Guglielmi,Danila Aparecida Scatolin; Corrêa,Marcos Antônio; Chiavacci,Leila Aparecida. |
| In this paper, nanostructured systems were developed, with the aid of ternary phase diagrams, from two surfactants, of differing degrees of lipophilicity (PPG-5-Ceteth-20 and the Oleth 10) and two oil phases (oleic acid and isopropyl myristate). It was observed that there were differences between the four resulting phase diagrams in the physical properties of the systems they represent. Thus, due to the capacity of Oleth 10 (as surfactant) and oleic acid (as the oil phase) to reduce interfacial tension, large regions of translucent systems were seen on the diagrams produced by them. By polarized light microscopy, it was possible to identify the isotropic and anisotropic properties of these systems, which were confirmed by small-angle X-ray scattering... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ternary phase diagrams; Nanostructured systems; Small-angle X-ray scattering/profiles; Drugs/delivery systems. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502014000300653 |
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| Leite,Fernanda de Godoy; Oshiro Júnior,João Augusto; Chiavacci,Leila Aparecida; Chiari-Andréo,Bruna Galdorfini. |
| Based on previous studies, it has been found that goji berry (GB), popularly known as a ‘miracle fruit’, has excellent antioxidant potential and can be used in the treatment of skin disorders associated with ageing. This study aimed to incorporate GB into a structured cosmetic in order to optimise its penetration. Stability studies of the formulation, determination of the antioxidant activity of the extract and of the formulation, rheological measurements, SAXS, polarised light microscopy and bioadhesion analyses were performed. The results indicated the antioxidant activity of the extract, which can be incorporated into an emulsified cosmetic formulation. The emulsified formulation containing the extract remained stable, even after being submitted to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Goji Berry; Skin; Formulation; Lycium/drug effects; Skin Aging/immunology; Cosmetics/pharmacokinetics; Antioxidants/pharmacokinetics; Cosmetic Technology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100584 |
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