A new automated approach to determine monosodium glutamate in dehydrated broths by using the flow-batch methodology

作者：Acebal Carolina C; Insausti Matias; Pistonesi Marcelo F; Lista Adriana G^*; Fernandez Band Beatriz S

来源：Talanta, 2010, 81(1-2): 116-119.

DOI：10.1016/j.talanta.2009.11.045

• Flow-batch system
• Nephelometric detection
• Food analysis

The advantages of the flow-batch methodology were exploited to implement a simple system with nephelometric detection for the determination of monosodium glutamate (MSG) in food samples. The method is based on the inhibitory effect of the MSG over the crystallization of L-lysine in an isopropanol/acetone mixture. The calibration curve was prepared on-line. The method was linear over the range of 2.8 x 10(-3) to 1.1 x 10(-2) g L(-1) and a detection limit of 9.7 x 10(-5) g L(-1) was achieved. It was successfully applied to determine the MSG concentration in food samples, without a previous treatment. A recovery study was carried out on real samples and the percentages were between 98 and 106%.

• 出版日期2010-4-15