Sulfur dioxide-releasing device
    1.
    发明授权
    Sulfur dioxide-releasing device 失效
    硫化二氧化物释放装置

    公开(公告)号:US3559562A

    公开(公告)日:1971-02-02

    申请号:US3559562D

    申请日:1969-06-06

    IPC分类号: A23B7/144 A23B7/152 A23B7/00

    CPC分类号: A23B7/152 A23B7/144

    摘要: A device for preserving fresh fruit by releasing sulfur dioxide into a sealed container of the fruit. The device comprises a layer of solid coating material and a particulate compound forming a substantially uniform dispersion throughout the layer. The compound is characterized by the release of sulfur dioxide on contact with water vapor. One device is formed of a dispersion of sodium bisulfite in a layer of white scale paraffin wax containing a viscosity-increasing agent.