Oil is an essential ingredient in cooking. According to a recent Consumer Council test on 50 samples of cooking oil, 94% were detected with one or more harmful pollutants. Twenty-nine samples were detected in the genotoxic carcinogen glycidol, two of which exceeded European Union standards.
The council procured 50 samples of common types of cooking oil from supermarkets and department stores, covering 13 categories. This includes 14 extra virgin olive oil, 2 avocado oil, 3 coconut oil, 2 camellia oil, 2 sunflower oil and 2 rice. Bran oil, 2 grape seed oils, 3 corn oils, 6 canola oils, 1 soybean oil, 6 peanut oils, 5 blended oils.
Some types of cooking oil require high temperature refining during the manufacturing process. It releases the toxic 3-MCPD and the genotoxic carcinogen glycidol. Watchdog said that about 60% of each sample was detected in 3-MCPD (30 samples) and glycidol (29 samples).
Samples of one coconut oil (Superfood Lab coconut cooking oil) and one peanut oil (Yu Pin King Pure Peanut Oil) were detected at 1,100 μg and 2,000 μg of glycidol, respectively. EU standard.
The content of 3-MCPD also fluctuated more than 13-fold between the lowest (130 μg) and highest (1,900 μg) levels of samples. The highest 3-MCPD content was found in one sample of mixed oil, but it does not exceed EU standards and probably does not pose a health risk when taken on a regular basis.
Prolonged overdose of 3-MCPD adversely affects the renal function, central nervous system, and male reproductive system of laboratory animals.
The test also found that one sample of extra virgin olive oil and two samples of camellia oil claimed to be cold pressed contained both 3-MCPD and glycidol. It was suspected that the samples may have been treated at high temperatures or contaminated with non-cold pressed oil, despite levels not exceeding EU standards.
In addition, two samples were detected with the genetically toxic carcinogen benzo (a) pyrene, one of which had a corn oil sample (2.1 μg / kg) with a concentration slightly above EU standards (2.0 μg / kg). ..
The test also found that about 70% of the samples contained plasticizer. This is about the same percentage as the 2017 test results.
However, in the 2017 test, five samples exceeded the CFS action level and EU limits, while in the current test only one sample of extra virgin olive oil exceeds such limits and is improved. There are signs of.
In addition, the test revealed that there was a difference in excess of the prescribed tolerance (20%) between the actual nutrient content and the declared nutrient content of the eight samples. The most serious case was the polyunsaturated fatty acid (PUFA) content of one sample, with a difference of 85% from the label value. The council urges manufacturers to quickly correct product label discrepancies and provide consumers with accurate information.
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