Titrimetric application of 2-bromo-bis-1, 10-phenanthroline-copper (II) bromide as a titrant in determination of ascorbic acid in pure form, fruits and vegetables

• Main Author: Oluwole Oladeji
• Format: Article
• Language: English
• Published: National Council for Scientific Research-Lebanon 2016-12-01
• Series: Lebanese Science Journal
• Subjects: ascorbic acid; antioxidants; titrant; scurvy; 2-bromo-bis-1; 10-phenanthroline-copper (II) bromide; 2,6-dichlorophenol-indophenol
• Online Access: http://lsj.cnrs.edu.lb/2016/12/30/o-oladeji/

Oladeji, O. Titrimetric application of 2-bromo-bis-1, 10-phenanthroline-copper (II) bromide as a titrant in determination of ascorbic acid in pure form, fruits and vegetables. 2016. Lebanese Science Journal, 17(2): 193-199. Ascorbic acid is very important to man and the consumption has been linked to the prevention of degenerative diseases such as scurvy and serves as an antioxidants. There have been different approaches in the determination of ascorbic acid in fruits and vegetable. In recent times, new methods were introduced by scientists. Therefore, in order to prove the authenticity of these methods, the concentrations obtained were compared with the conventional methods. The results show that orange has maximum ascorbic acid content when compared to cashew and in vegetables Vermonia baldwinii has maximum and Solanium incanum has low ascorbic acid content. The amount of ascorbic acid determined by 2, 6-dichlorophenol-indophenol and copper (II) complex (2-bromo-bis-1, 10-phenanthroline-copper (II) bromide) are comparable. Therefore, 2-bromo-bis-1, 10-phenanthroline-copper (II) bromide can serve as a titrant in titrimetric determination of ascorbic acid in pure form, fruits and vegetables.