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Alginate-pomegranate peels' polyphenols beads: effects of formulation parameters on loading efficiency BJPS
Zam,Wissam; Bashour,Ghada; Abdelwahed,Wassim; Khayata,Warid.
Calcium alginate beads containing pomegranate peels' polyphenol extract were encapsulated by ionic gelation method. The effects of various formulation factors (sodium alginate concentration, calcium chloride concentration, calcium chloride exposure time, gelling bath time maintaining, and extract concentration) on the efficiency of extract loading were investigated. The formulation containing an extract of 1 g pomegranate peels in 100 mL distilled water encapsulated with 3 % of sodium alginate cured in 0.05 M calcium chloride for 20 minutes and kept in a gelling bath for 15 minutes was chosen as the best formula regarding the loading efficiency. These optimized conditions allowed the encapsulation of 43.90% of total extracted polyphenols and 46.34 % of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pomegranate/polyphenols/microencapsulation; Calcium alginate beads/microencapsulation; Microencapsulation; Polyphenols; Natural antioxidants/microencapsulation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502014000400741
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Arginine enzymatic deprivation and diet restriction for cancer treatment BJPS
Zam,Wissam.
ABSTRACT Recent findings in amino acid metabolism and the differences between normal, healthy cells and neoplastic cells have revealed that targeting single amino acid metabolic enzymes in cancer therapy is a promising strategy for the development of novel therapeutic agents. Arginine is derived from dietary protein intake, body protein breakdown, or endogenous de novo arginine production and several studies have revealed disturbances in its synthesis and metabolism which could enhance or inhibit tumor cell growth. Consequently, there has been an increased interest in the arginine-depleting enzymes and dietary deprivation of arginine and its precursors as a potential antineoplastic therapy. This review outlines the most recent advances in targeting...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arginine-depleting enzyme/antineoplastic therapy; Dietary deprivation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300402
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