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| Analysis and comparison of quality of domestic and imported fish oil |
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| KeyWord:crude fish oil sensory index physicochemical index undesirable substance fatty acid composition |
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| Abstract: |
| The sensory indexes, physicochemical indexes, undesirable substances content and fatty acid composition of domestic and imported fish oil were respectively detected and compared. The results showed that the smell of domestic fish oil was significantly heavier than that of imported fish oil and domestic oil appeared obvious stratification. The acid value and peroxide value of domestic fish oil were generally higher than those of imported fish oil, also the undesirable substances contents were higher than those of imported oil, especially in dioxin and benzpyrene. The content of DHA in domestic anchovy oil was higher than EPA, while the content of EPA in imported anchovy oil was higher than DHA, and the polyunsaturated fatty acid content of domestic fish oil was lower than that of imported fish oil. Domestic and imported tuna oils had no significant difference in physicochemical indexes and fatty acid composition. There were no significant differences between domestic mixed fish oil and anchovy oil/tuna oil on sensory indexes, physicochemical indexes and undesirable substances content, but the difference was significant in fatty acid composition. The saturated fatty acid content in mixed fish oil was significantly higher than that in the other two domestic fish oils, so the use value of mixed fish oil was the lowest. |
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