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Nanoencapsulation of bovine lactoferrin for food and biopharmaceutical applicat...
Balcão, V. M.; Costa, Carla Isabel; Matos, Carla M.; Moutinho, C.; Amorim, Manuela; Pintado, Manuela E.; Gomes, Ana P.; Vila, Marta M.; Teixeira, J. A.Lactoferrin has for long captured the interest of many researchers as a natural compound with a wide variety of uses. Lactoferrin is a monomeric, iron-binding 80 kDa glycoprotein, and appears to be the subfraction of whey with the best documented antiviral, antimicrobial, anticancer and immune modulating/enhancing effects. It belongs to the family of transferrin proteins, and serves to control iron levels in bo...
Quantitative reflectance spot test for the determination of acetylsalicylic aci...
Matias,Francisco A. A.; Vila,Marta M. D. C.; Tubino,MatthieuThis paper describes a quantitative reflectance spot test procedure for the determination of acetylsalicylic acid (ASA) in pharmaceutical preparations. The method is based on the reaction of salicylic acid, obtained from the hydrolysis of ASA, with Fe(III) forming a deep blue-violet compound. Medicines containing ASA can be easily analyzed by the proposed method as it is not necessary to do any separation. The ...
Comparative study of two spectrophotometric reagents for catechol analysis in g...
Magna,Adriana; Salomão,Acácia A.; Vila,Marta M. D. C.; Tubino,MatthieuIn this article are described and compared two spectrophotometric methods for the analysis of catechol (o-hydroxyphenol) in Paullinea cupana var. sorbilis, popularly known as guaraná. The pounded seed samples were extracted with ethanol 97% v/v and the solutions were treated with p-aminophenol in alkaline ethanolic medium or m-aminophenol and sodium metaperiodate in buffered aqueous solution (pH 3.0). The absor...
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