摘要
利用滴定法测定了食品接触用纸不同原材料的高锰酸钾(KMnO_4)消耗,结果表明,淀粉中木薯原淀粉的KMnO_4消耗量最大,松香、丁苯胶乳、聚乙烯醇的高锰酸钾消耗量明显大于其他原料;测定了不同纸浆抄纸以及8种商品纸样的KMnO_4消耗量,机械浆抄纸的KMnO_4消耗量大于化学浆, 6种商品纸样的KMnO_4消耗量大于GB 4806.8的限值40 mg/kg;同时利用紫外可见分光光度法测定了6种KMnO_4消耗量超过限值的纸样浸泡液中的淀粉含量,测得浸泡液中的淀粉含量范围为0.1～2.6 mg;通过分析得到浸泡液中淀粉对纸样KMnO_4消耗量的贡献为1.8%～7.2%。研究表明淀粉是食品接触用纸的KMnO_4消耗量的来源之一,淀粉的水解产物以及食品接触用纸中的其他无害原料也可能会引起KMnO_4消耗量增加,需要进一步深入研究。
In this study, consumptions of potassium permanganate(KMnO4) by different raw materials used as food contact paper were analyzed via titration tests. The results showed that cassava starch contributed to KMnO4 consumption the most among all other starches determined. KMnO4 consumption by rosin, styrene-butadiene latex, and polyvinyl alcohol were significantly greater than that of other raw materials. Samples from different paper pulps and eight different commercial paper samples were analyzed against KMnO4 consumption. The results showed that mechanical pulps consumed more potassium permanganate than chemical pulps did. The amount of KMnO4 consumed by six commercial paper samples all exceeded the national standard(40 mg/kg). At the same time, the starch content was tested in the soaking solutions of these six kinds of paper samples by UV-Vis spectrophotometry, and the results were in a range of 0.1-2.6 mg. The contribution of starch in the soaking solutions to KMnO4 consumption was 1.8%-7.2%. Studies have shown that starch is one of the sources of KMnO4 consumption in food contact papers. Hydrolysis products of starch and other non-hazardous raw materials in food contact papers may also cause increased KMnO4 consumption, which requires further quantitative analysis.
作者
朱丽娴
林勤保
朱红梅
马洪生
钟怀宁
ZHU Lixian;LIN Qinbao;ZHU Hongmei;MA Hongsheng;ZHONG Huaining(Key Laboratory of Product Packaging and Logistics,Institute of Packaging Engineering,Jinan University,Zhuhai 519070,China;Havi Global Solutions (Guangzhou) Company Ltd,Guangzhou 510060,China;Zhuhai Hongta Renheng Packaging Company Ltd,Zhuhai 519070,China;Technical Center of Guangdong Inspection & Quarantine Bureau,Guangzhou 510623,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2019年第7期257-261,共5页
Food and Fermentation Industries
基金
广东省动植物与食品进出口技术措施研究重点实验室开放课题(201803)
国家质量监督检验检疫总局科技计划项目(2016IK057
2014IK078)
关键词
高锰酸钾消耗量
食品接触用纸
淀粉
紫外可见分光光度法
potassium permanganate consumption
food contact papers
starch
ultraviolet-visible spectrophotometry(UV-Vis spectrophotometry)
