A gas chromatographic method for rapid determination of food additives in vegetable oils

1984 ◽  
Vol 32 (3) ◽  
pp. 681-683 ◽  
Author(s):  
Liang Zu Yu ◽  
Masanori Inoko ◽  
Takeo Matsuno
Keyword(s):  
Vegetable Oils ◽  
Chromatographic Method ◽  
Rapid Determination ◽  
Food Additives ◽  
Gas Chromatographic Method

Add Methanolysis and Gas Chromatographic Determination of Brominated Vegetable Oils in Soft Drinks

1983 ◽  
Vol 66 (6) ◽  
pp. 1385-1389
Author(s):  
James F Lawrence ◽  
Rajinder K Chadha ◽  
Henry B S Conacher
Keyword(s):  
Vegetable Oils ◽  
Chromatographic Method ◽  
Methyl Esters ◽  
Chromatographic Determination ◽  
Soft Drinks ◽  
Packing Material ◽  
Organic Extraction ◽  
Chromatography Columns ◽  
Gas Chromatographic Method

Abstract A gas chromatographic method has been developed for determination of brominated vegetable oils in citrus-flavored soft drinks. Oils were extracted from the drinks with ethyl ether and subjected to acidcatalyzed methanolysis. The resulting brominated methyl esters (dibromostearate, tetrabromostearate, and hexabromostearate) were separated and quantitated as single peaks on a 3% OV-3 column. Chromatography columns were stable for about 3 months of daily use; then the first 15 cm of column packing material was replaced or a new column was prepared. A number of citrus soft drinks were analyzed and contained 3.5-3.9 mg brominated oil/10 fl. oz. Recoveries from spiked samples after organic extraction and methanolysis were 94.5-105%.

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