食品包装纸中11种DSD-FWAs的迁移试验

Migration of eleven DSD-FWAs from packaging paper to food

目的观察食品包装纸中11种双三嗪氨基二苯乙烯类荧光增白剂(DSD-FWAs)迁移情况,为食品包装纸的质量安全监管提供依据。方法收集41份DSD-FWAs阳性的食品包装纸样品,剪成表面积为6 cm2的纸片,分别浸泡于10 mL的蒸馏水、3%乙酸、10%乙醇和95%乙醇4种食品模拟物中,在特定时间和温度下进行迁移试验;采用高效液相色谱-荧光检测(HPLC-FLD)法检测11种DSD-FWAs迁移量。结果4种食品模拟物中均检出C.I.220、C.I.24、C.I.210、C.I.85、C.I.113、C.I.264、C.I.353和C.I.357。在相同温度和时间下,迁移量从大到小依次为10%乙醇、蒸馏水、3%乙酸和95%乙醇。C.I.220在4种食品模拟物中均有溶出,在20~90℃浸泡温度下,迁移量随浸泡温度升高而增加;在20、40、60℃浸泡温度下,C.I.220在4种食品模拟物中的迁移量随时间延长均呈快速上升后平稳的趋势。结论食品包装纸的储存温度越高、保存时间越长,包装纸中的DSD-FWAs越容易向食品迁移。

Objective To observe the migration of 4,4’-diaminostilbene-2,2’-disulfonc acid-based fluorescent whitening agents(DSD-FWAs)in food packaging paper,so as to provide evidence for quality and safety supervision for paper packaging materials.Methods Forty-one paper samples with DSD-FWAs positive were made into 6 cm2 pieces and were soaked in four food simulants(distilled water,3% acetic acid,10% ethanol and 95% ethanol,10 mL each).The experiment was carried out at the specified soaking temperature and time.The migration amounts of eleven DSD-FWAs were detected by high performance liquid chromatography-fluorescence detection.Results C.I.220,C.I.24,C.I.210,C.I.85,C.I.113,C.I.264,C.I.353 and C.I.357 were found in all the four food simulants.At the same time and temperature,the migration amount was highest in 10%ethanol,followed by distilled water,3% acetic acid and 95% ethanol.C.I.220 was dissolved in all four food simulants,in the range of 20-90℃,the migration amount increased with soaking temperature;at 20℃,40℃ and 60℃,the migration amount increased first and then stabilized over time.Conclusion The higher the storage temperature and the longer the storage time of paper packaging,the easier the DSD-FWAs in packaging paper migrate to food.