吸附在包装薄膜上的风味化合物在乙醇溶液中的解吸行为。

Desorption behavior of sorbed flavor compounds from packaging films with ethanol solution.

作者信息

Hwang Y H, Matsui T, Hanada T, Shimoda M, Matsumoto K, Osajima Y

机构信息

Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Graduate School, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.

出版信息

J Agric Food Chem. 2000 Sep;48(9):4310-3. doi: 10.1021/jf991082h.

DOI:10.1021/jf991082h

PMID:10995356

Abstract

Desorption behavior of sorbed flavor compounds such as ethyl esters, n-aldehydes, and n-alcohols from LDPE and PET films was investigated in 0 to 100% (v/v) ethanol solutions at 20 degrees C, 50 degrees C, and 60 degrees C. In both films, the desorption apparently increased with increasing ethanol concentration and treatment temperature, depending on the compatibility of the flavor compound with the solvent. Namely, the partition coefficient of ethyl esters, n-aldehydes, and n-alcohols in the LDPE film turned out to be approximately zero at >/=60%, >/=80%, and >/=40% (v/v) ethanol, respectively (for PET film, >/=80%, >/=80%, and >/=40% (v/v) ethanol concentrations were required for complete desorption, respectively). As for physical properties (heat of fusion, melting point, and tensile strength and elongation at break) of LDPE and PET films, there were no significant differences between intact film and the treated film with 60% (v/v) ethanol for 30 min at 60 degrees C. These results suggest that it is possible to apply a desorption solvent such as ethanol solution for desorption of sorbed flavor compounds from packaging films with no physical change in the film properties by this desorption treatment.

摘要

在20℃、50℃和60℃下，研究了吸附在低密度聚乙烯（LDPE）和聚对苯二甲酸乙二酯（PET）薄膜上的风味化合物（如乙酯、正醛和正醇）在0至100%（v/v）乙醇溶液中的解吸行为。在这两种薄膜中，解吸明显随着乙醇浓度和处理温度的升高而增加，这取决于风味化合物与溶剂的相容性。也就是说，在乙醇浓度分别大于等于60%（v/v）、80%（v/v）和40%（v/v）时，LDPE薄膜中乙酯、正醛和正醇的分配系数分别约为零（对于PET薄膜，完全解吸分别需要大于等于80%（v/v）、80%（v/v）和40%（v/v）的乙醇浓度）。至于LDPE和PET薄膜的物理性能（熔化热、熔点、拉伸强度和断裂伸长率），完整薄膜与在60℃下用60%（v/v）乙醇处理30分钟的薄膜之间没有显著差异。这些结果表明，通过这种解吸处理，有可能应用乙醇溶液等解吸溶剂从包装薄膜中解吸吸附的风味化合物，而薄膜性能不会发生物理变化。