Several methods for the determination of TBA-value were compared with a new direct modification (omitting the previous distillation), using I-butanol as the sole solvent. The absorbance is measured at 530 nm after heating to 95 "C for 120 min, and cooling. The effect of variables was tested by the Y
Validity of the 2-Thiobarbituric Acid Test for the Quantitative Determination of Rancidity in Fats and Oils
β Scribed by Maleki, M.
- Publisher
- John Wiley and Sons
- Year
- 1974
- Weight
- 309 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0931-5985
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A model system was used to study the pattern of rancidity in linoleic acid and corn oil using the TBA method. It was shown that malonaldehyde is not a stable end product of rancidity and therefore, the TBA test is not a reliable means of quantitative feasurement of degree of rancidity in food products in long term storage.
π SIMILAR VOLUMES
Rancidity of frozen fish (Baltic cod and herring, mackerel, horse mackerel and hake) was determined by means of TBA value, organoleptical scoring and peroxide value. The correlation between the rancid odour sensory assessment and TBA test results proved insignificant ( I = 0.53). Model experiment wa
By studying the changes in refractive index, viscosity, absorption in the UV, infra-red patterns, iodine value, and peroxide values using hydriodic acid side by side with other methods which occur during the autoxidation of the methyl esters of corn oil fatty acids at 40Β° C, it is shown that Wheeler
## Abstract A comparison was made between the thiobarbituric acid (TBA) values determined by the direct extraction method with trichloroacetic acid and those assessed by the distillation method. When applied to mackerel kept in frozen condition the TBAβvalues obtained with both methods showed a sim