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| Khan,Barkat Ali; Akhtar,Naveed; Khan,Haroon; Braga,Valdir de Andrade. |
| The objective of this study was to develop a pharmaceutical O/W emulsion containing plant-derived polyphenol extracts and evaluate its stability and antioxidant activity. O/W emulsions were prepared using ionic surfactant polysorbate 80 (Tween 80®). The odorwas adjusted with few drops of blue sea fragrance. DPPH (1,1-diphenyl-2-picrylhydrazyl) assay was used to evaluate the antioxidant activity of the plant extracts alone and emulsions containing these extracts. Physical stability was assessed by submitting the emulsions to storage at 8 ºC, 25 ºC, 40 ºC and 40 ºC + 70% RH (relative humidity) for two months. Various physical characteristics of emulsions monitored, include color, creaming, liquefaction, centrifugation and pH. Brookfield rotational rheometer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hippophae rhamnoids/pharmacognosy; Cassia fistula/pharmacognosy; Emulsion O/W; Emulsion O/topical use; Emulsion O/W; Emulsion O/conductivity; Emulsion O/W; Emulsion O/rheology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400016 |
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| Arshad,Wajeeha; Khan,Haji Muhammad Shoaib; Akhtar,Naveed; Mohammad,Imran Shair. |
| Currently, the use of natural compounds obtained from plants tremendously increased due to their promising therapeutic properties. The aim of this study was to formulate a stable emulgel formulation loaded with Cinnamomum tamala (CT) extract. The antioxidant activity of plant extract was determined by DPPH inhibition assay. The extract was successfully loaded into an emulgels using different concentrations of carbopol-940, liquid paraffin, emulsifying agents and preservatives. Preliminary stability study was performed of 17 CT emulgel formulations at accelerated temperature of 50 °C for 2-months. Organoleptic evaluation, centrifugation, globule size, pH, electrical conductivity and rheological studies were performed for a period of 90-days at different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cinnamomum tomala; Antioxidants; Emulgel; Physicak stability; Non-Newtonian; Pseudo-plasticity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100553 |
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