Study On The Detection And Controls Of Acrylamide Of Nang In Xinjiang

This paper took Nang of Xinjiang characteristics traditional food as the subject of research,established a determination method about content of acrylamide of Nang in Xinjiang with GC-μECD,researched the correlation between different raw materials,dosage,baking condition and content of acrylamide during the processing by combining fabrication on site to acquring samples and simulated to producing in the lab.It also explored the method of controling the content of acrylamide of Nang products by using food additive.The main findings are as follows:(1) The research established a method about determinating the content of acrylamide of Nang in Xinjiang with GC-μECD. This method consisted of extraction, purification, bromization, concentration and GC analysis. The GC analysis was carried out by using electron capture detector. The results showed that there was a good linear relation ship(R2=0.9988) in the shconcentration range of 0.2~1.0 μg/mL, and the limit of detection was 0.023 μg/kg. The recoveries of acrylamide in the Nang was 75.81%, the relative standard deviation of precision(RSD) was 2.99% and the relative standard deviation of repeatability(RSD) was 2.34%, acrylamide content of Nang products of Xinjiang was 159.29~453.64 μg/kg.(2) The different processing had an impact of Nang products of acrylamide. Nang products processing, the different accessories and the amount put into Nang had a great effect on the content of acrylamide; the longer time of proofer, the less content of acrylamide;with the extension of baking time, the content of acrylamide presented a trend of decreasing after the increasing; as the rise of baking temperature, the content of acrylamide increasing gradually.(3) Citric acid, cysteineand calcium chloride are preferable acrylamide inhibitors during the processing of Nang product, the maximum allowable range of the addition amount of inhibition rates respectly were: 57.02%, 58.85% and 59.17%.(4) The better effect of inhibitory compounding additives were: ①calcium chloride0.1%, citric acid0.1% and cysteine0.006%, inhibition rate were 80.71%,the high cost of compound additives had good effect of inhibitory; ②calcium chloride0.1% and citric acid 0.1%, the inhibition rate were 78.07%, the ower cost of this compound had better inhibitory effect, but it is easier to practice and promotion.