Effect Investigation of Scrap Addition Ratio on Recycled Food Contact Polyethylene Films Based on GC－MS and Chemometrics

GUO Pan; ZENG Shao-fu; ZHU Lei; WU Yong-ning; WANG Zhi-wei; HU Chang-ying

doi:10.19969/j.fxcsxb.22051902

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Effect Investigation of Scrap Addition Ratio on Recycled Food Contact Polyethylene Films Based on GC－MS and Chemometrics

Scientific Papers | 更新时间：2023-01-04

- Effect Investigation of Scrap Addition Ratio on Recycled Food Contact Polyethylene Films Based on GC－MS and Chemometrics
- Journal of Instrumental Analysis Vol. 41, Issue 10, Pages: 1470-1477(2022)
- 作者机构：
  
  1.暨南大学包装工程学院，广东省普通高校产品包装与物流重点实验室，广东珠海 519070
  2.暨南大学食品科学与工程系，广东广州 510632
  3.暨南大学力学与建筑工程学院，广东广州 510632
  4.国家食品安全风险评估中心，北京 100022
- 作者简介：
- 基金信息：
- DOI：10.19969/j.fxcsxb.22051902
  CLC：
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郭盼,曾少甫,朱蕾等.基于GC－MS和化学计量法探究边角料添加比例对食品接触用再生PE薄膜的影响[J].分析测试学报,2022,41(10):1470-1477.

GUO Pan,ZENG Shao-fu,ZHU Lei,et al.Effect Investigation of Scrap Addition Ratio on Recycled Food Contact Polyethylene Films Based on GC－MS and Chemometrics[J].Journal of Instrumental Analysis,2022,41(10):1470-1477.
郭盼,曾少甫,朱蕾等.基于GC－MS和化学计量法探究边角料添加比例对食品接触用再生PE薄膜的影响[J].分析测试学报,2022,41(10):1470-1477. DOI： 10.19969/j.fxcsxb.22051902.

GUO Pan,ZENG Shao-fu,ZHU Lei,et al.Effect Investigation of Scrap Addition Ratio on Recycled Food Contact Polyethylene Films Based on GC－MS and Chemometrics[J].Journal of Instrumental Analysis,2022,41(10):1470-1477. DOI： 10.19969/j.fxcsxb.22051902.

摘要

对含不同比例边角料再生聚乙烯（PE）薄膜的颜色、总迁移量进行测定，基于气相色谱－质谱联用（GC－MS）技术对其中的挥发性物质进行筛查，并结合化学计量法分析差异性物质。结果表明：边角料的加入对单层再生薄膜颜色的影响可忽略，且原生和再生PE薄膜在4种食品模拟物的总迁移量均小于安全限量10 mg/dm,2,。GC－MS共检出90种挥发性有机化合物，主要为脂肪烃、添加剂及其降解产物和杂质等。通过主成分分析（PCA）和正交偏最小二乘－判别分析（OPLS－DA）模型将再生PE薄膜分为3类，边角料含量低于10%时与原生薄膜相似，10% ~ 50%时需进一步评估，高于50%时需重点关注。并构建V－plot筛选出26种造成样品差异的特征成分，主要为脂肪烃，其次为添加剂及其降解产物，如十二酰胺、壬醛和抗氧剂1010的降解产物等。该研究可为食品接触用领域边角料“膜对膜”同级回收的应用提供借鉴。

Abstract

The color and overall migration of recycled polyethylene（PE） films containing different proportion of scraps were determined．The volatile substances were screened by gas chromatography－mass spectrometry（GC－MS），and the different substances were analyzed by chemometrics．The experimental results showed that the addition of scraps exerted a negligible effect on the color of the single-layer recycled film，while the total migration of the virgin and recycled PE films in four food simulants was less than the safety limit of 10 mg/dm,2,．A total of 90 volatile organic compounds were detected by GC－MS，mainly including aliphatic hydrocarbons，additives and their degradation products and impurities．The recycled PE films were divided into three categories by using principal components analysis（PCA） and orthogonal partial least squares－discriminate analysis（OPLS－DA） models．The recycled PE films were similar to the original film when the contents of scrap were lower than 10%．Further evaluation was needed when the contents of scrap were between 10% and 50%，and more attention was needed at higher than 50%．Moreover，V－plot was constructed to screen 26 characteristic components that caused the sample differences，mainly aliphatic hydrocarbons，followed by additives and their degradation products，such as the degradation products of dodecanamide，nonanal and antioxidant 1010．This study provided a reference for the application of “film to film” recycling of food contact scraps.

关键词

边角料再生聚乙烯气相色谱－质谱联用（GC－MS）化学计量法

Keywords

scraprecycled polyethylenegas chromatography－mass spectrometry（GC－MS）chemometrics

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