Badeka A B, Kontominas M G
Department of Chemistry, University of Ioannina, Greece.
Z Lebensm Unters Forsch. 1996 Apr;202(4):313-7. doi: 10.1007/BF01206103.
Migration of dioctyladipate (DOA) and acetyltributylcitrate (ATBC) plasticizers from plasticized polyvinylchloride (PVC) and polyvinylidene chloride (PVDC)/PVC (Saran) films into both olive oil and distilled water during microwave heating has been studied. The plasticizer migrating into olive oil and water was determined using an indirect GC method after saponification of the ester-type plasticizer (DOA or ATBC) and subsequent collection of the alcohol component of the ester, namely: 2-ethyl-1-hexanol and 1-butanol, respectively. Migration was dependent on heating time, microwave power setting, the nature of the food simulant and the initial concentration of the plasticizer in the film. Migration of DOA into olive oil reached equilibrium after heating for 10 min at full power (604.6 mg DOA/l). Migration into distilled water was 74.1 mg/l after 8 min of microwave cooking at full power. The amount of ATBC migrating into olive oil reached equilibrium after heating for 10 min at full power (73.9 mg ATBC/l). Migration into distilled water was 4.1 mg/l after heating at full power for 8 min. Control samples containing olive oil gave DOA migration values which were significantly higher than the upper limit for global migration (60 mg/l) set by the European Community. It is proposed that PVC should not be used in direct contact with food in the microwave oven, while Saran may be used with caution in microwave heating and reheating applications, avoiding its direct contact with high fat foodstuffs.
已研究了己二酸二辛酯（DOA）和柠檬酸乙酰三丁酯（ATBC）增塑剂在微波加热过程中从增塑聚氯乙烯（PVC）和聚偏二氯乙烯（PVDC）/PVC（莎纶）薄膜迁移到橄榄油和蒸馏水中的情况。采用间接气相色谱法，在对酯型增塑剂（DOA或ATBC）进行皂化并随后收集酯的醇成分（即分别为2-乙基-1-己醇和1-丁醇）后，测定迁移到橄榄油和水中的增塑剂。迁移情况取决于加热时间、微波功率设置、食品模拟物的性质以及薄膜中增塑剂的初始浓度。在全功率（604.6 mg DOA/l）下加热10分钟后，DOA向橄榄油中的迁移达到平衡。在全功率下微波烹饪8分钟后，向蒸馏水中的迁移量为74.1 mg/l。在全功率下加热10分钟后，ATBC向橄榄油中的迁移量达到平衡（73.9 mg ATBC/l）。在全功率下加热8分钟后，向蒸馏水中的迁移量为4.1 mg/l。含有橄榄油的对照样品给出的DOA迁移值显著高于欧洲共同体设定的全球迁移上限（60 mg/l）。建议在微波炉中不应将PVC用于与食品直接接触，而莎纶在微波加热和再加热应用中可谨慎使用，避免其与高脂肪食品直接接触。
