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| 四种聚合物包装材料对亚麻籽油氧化产物的影响研究 |
| Effects of four polymer packaging materials on linseed oil oxidation products |
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| DOI： |
| 中文关键词: 亚麻籽油 包装材料 氧化 接触角 挥发性物质 |
| 英文关键词:linseed oil packaging material oxidation contact angle volatiles |
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| 中文摘要: |
| 为了探究聚合物包装材料对食用油氧化的影响，以亚麻籽油和不同聚合物包装材料（聚酰胺（PA）,聚乙烯（PE），聚对苯二甲酸乙二醇酯（PET）和聚丙烯（PP））为研究对象，探讨在室温和60?℃条件下四种聚合物包装材料表面和颗粒对亚麻籽油初级氧化产物及挥发性产物的影响。利用接触角测量仪、傅里叶变换红外光谱仪及气相色谱-质谱联用仪对材料表面特性、亚麻籽油初级氧化产物及挥发性产物进行了测定。结果表明：包装材料亲水性顺序为PET＞PP＞PE＞PA；在不同温度的氧化条件下，材料表面和颗粒对亚麻籽油产生氢过氧化物速率顺序均为PP＞PA>PE≈PET和PA＞PP≈PE＞PET；不同聚合物表面对亚麻籽油在室温及60?℃条件下产生挥发性物质总量影响顺序分别为PP＞PET≈PE＞PA和PP＞PA＞PET＞PE。聚合物的亲水性对亚麻籽油氧化变化有较大影响，且不同温度下对氧化产物的影响具有一定差异性。 |
| 英文摘要: |
| To investigate effects of polymer packaging materials on oxidation of edible oils, various polymer packaging materials （polyethylene (PE), polypropylene (PP), polyamide (PA) and polyethylene terephthalate (PET)） and linseed oil were used as materials, and the effects of the surface and particles of four polymer packaging materials on the primary oxidation products and volatile products of linseed oil at room temperature and 60?℃ were studied. The surface properties of the materials, the primary oxidation products and the volatile products of linseed oil were determined by contact angle measuring instrument, Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry（GC-MS）. The results showed that the order of hydrophilic of packaging materials was PET＞PP＞PE＞PA. Hydroperoxides generation rate of linseed oil on PP surface was the fastest, followed by PA＞PE≈PET, and the results of that with addition of these particles was PA＞PP≈PE＞PET. The total volatiles of oxidized linseed oil was followed as PP＞PE≈PET＞PA at room temperature and PP＞PA＞PET＞PE at 60?℃. The results demonstrated that hydrophilic of polymer packaging materials had great impacts on lineseed oil oxidation, and the effects of the character on various oxidation products of linseed oil also differed at the tested temperatures. |
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