PROBLEM TO BE SOLVED: To provide a method that can preserve soups for an extended period without damaging the flavor of the soups.SOLUTION: Provided is a preservation method of soups in which soups are preserved in an oxygen-absorbing container in which an oxygen-absorbing multilayer body that includes: an oxygen absorption layer (layer A) comprising an oxygen-absorbing resin composition that includes a polyester compound and a transition metal catalyst and a resin layer (layer B) that includes a thermoplastic resin which is used in all or one part. The preservation method of soups is that the polyester compound includes a constitutional unit that has at least one tetralin ring.COPYRIGHT: (C)2014,JPO&INPIT【課題】つゆ類の風味を損なわず、つゆ類を長期間保存できる方法を提供する。【解決手段】つゆ類を、ポリエステル化合物及び遷移金属触媒を含有する酸素吸収性樹脂組成物からなる酸素吸収層(層A)と、熱可塑性樹脂を含有する樹脂層(層B)とを含む酸素吸収性多層体を全部または一部に使用した酸素吸収性容器内に保存する、つゆ類の保存方法であって、前記ポリエステル化合物が、少なくとも1種のテトラリン環を有する構成単位を含有している、つゆ類の保存方法である。【選択図】なし
