氣相色譜法測(cè)定生濕面制品中4種多元醇
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Determination of Four Alcohols in Wet Flour Products by Gas Chromatography
CHEN Wei1，HU Binbin1*，XIE Hongbin1， YANG Shengyuan2 （1.Examination Section，Hengyang Center for Disease Control and Prevention，Hengyang 4210ol， China; 2.College of Public Health， University of South China，Hengyang 421oo1， China）
Abstract： Objective： To establish a gas chromatography method for the determination of four polyols， namely1，2-propanediol，ethyleneglycol，1，3-propanedioland glycerol，inrawwet flour products.Method：Raw wet flour products were ground with sea sand， ultrasonically extracted with anhydrous ethanol，centrifugated and passed through a 0.22μm organic filter membrane， separated by an HP-INNOWAX （ （60m×0.25mm ， 0.25μm ） chromatographiccolumn，detected bya hydrogen flameionization detector，and quantifiedbythe external standard method. Result： The four polyols had a good linear relationship within the range of 0mg.L-1 to 400.0mg.L-1 with a correlation coefficient r>0.999 .The detection limit of the method was 1.8mg.kg-1 to 4.6mg?kg-1 ，and the quantification limit was 6.0mg?kg-1 to 15.0mg.kg-1 . The spiked recovery experiments were conducted at three addition levels，and the average recovery rate was 90.8% to 109.4% ，with a relative standard deviation of 0.40% to 4.89% .Conclusion： This method is simple tooperate，has highaccuracyand goodrepeatability，and is suitable for the content detection of polyol compounds in raw wet flour products.
Keywords： wet flour products; gas chromatography; ethylene glycol; propanediol; glycerol
生濕面制品是經(jīng)機(jī)械或手工按照不同生產(chǎn)工藝加工制作成的各種形狀的非即食面制品[1]，如面條、餃子皮、餛飩皮、燒麥皮等[2。（剩余5472字）