en |
Direct Assay of Monosodium Glutamatein Multi-Sourced Bouillon Cubes by First Derivative Potentiometric Titration
ALONGE, PO; IDEMUDIA, OS & ODOKUMA-ALONGE, O
Abstract
In this study, a simple, cheap and accurate analytical method was developed for the direct assay of
monosodium glutamate (MSG). First derivative potentiometric assay was adopted in the determination of MSG content
in ten brands of Bouillon cubes (coded P1, P2, P3, P4, P5, P6, P7, P8, P9 and P10) sourced from different local
markets.Formic acid extract of MSG was used for the determination. The result obtained for MSG standard using this
method gave 99.40% which agrees with 99.94% also obtained for the non-extracted method. Results for all the coded
samples show that sample P8 (75.14%) gave the highest value of MSG content while sample P6 (55.96%) gave the lowest
value. Though, the World Health Organization (WHO) requirement for MSG consumption per day is 0.12g, the values
obtained in this study cannot be related to daily consumption because the amounts of bouillon cubes and consequently
the amount of MSG used by consumers differ from one individual to another. However, the result obtained for the
estimation of MSG in bouillons cubes can be adoptedby regulatory agencies such as National Agency for Food, Drugs
and Administration Control (NAFDAC) and International Standard Organization (ISO).
Keywords
Derivative; Extract; Potentiometric; Bouillon; Consumers
|