Introduction Soft drinks are complex mixtures containing a variety of substances such as coloring compounds, flavoring agents, acidifiers, sweeteners, preservatives, and caffeine. Acidulants reduce the soft drink’s pH and thereby assist in beverage preservation for long-term storage. Acidulants can also be used as chelating agents, buffers, coagulators, and flavoring agents. In the latter role,...

Aim: The study aimed to evaluate enamel deproteinization with sodium hypochlorite in the conditioning using a self-etching primer for adhesion orthodontic brackets. Background: bonding orthodontics plays major role success of treatment. primers reduce chair time and diminish risk saliva contamination. Methods: sample comprised 80 bovines' incisors, divided into 4 groups according process adhesi...

Highly self-ordered alumina nanopore arrays were fabricated using hard anodization technique in different mixtures of oxalic/phosphoric acid. The phosphoric acid concentration was varied from 0.05 to 0.3 M while the oxalic acid concentration was changed between 0.3 and 0.4 M. The self ordered nanoporous arrays were obtained in anodization voltage changing from 130 to 200 V. The interpore distan...

In view of the biological significance of the lecithins a.nd of the fact that t;hey have been known to the chemist for a hundred years (l), it is rather surprising that there should still remain doubts concerning the position of the phosphoric acid. Until recently it has been assumed by most workers that lecithins could be hydrolyzed chemically without causing a change in the position of the ph...