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| udgement of purity of oil-tea camellia seed oil by determining fatty acidcontent with gas chromatography |
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| DOI：10.12166/j.zgyz.1003-7969/2020.01.028 |
| KeyWord:oil-tea camellia seed oil adulteration purity fatty acid gas chromatography |
| FundProject:广西食品药品监督管理局（桂食药科2018-8（直属））；食品安全地方标准制定（修订）项目（桂地标食2017006号） |
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| Abstract: |
| The fatty acid composition of oil-tea camellia seed oil adulterated with soybean oil, rapeseed oil, corn oil or sunflower seed oil was analyzed by gas chromatography. The results showed that oleic acid, linoleic acid and linolenic acid could be used as the characteristic fatty acids in the identification of soybean oil and rapeseed oil, while palmitic acid, oleic acid and linoleic acid could be used as the characteristic fatty acids to identify corn oil and sunflower seed oil. The correlation coefficient of regression prediction model (R2) was higher (>0.99). The regression prediction model could be used to identify 4% of soybean oil or rapeseed oil as well as 8% of corn oil or sunflower seed oil, with recoveries ranging from 96.56% to 112.88%. The established method was sensitive and accurate, and could provide scientific basis for purity identification of blend oil-tea camellia seed oil and quantitative analysis of adulterated oil-tea camellia seed oil. |
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