| 摘要 |
A method of packing and, for purposes of extending its shelf-life, heat treating a food product in a packaging container (30) of paper or paperboard. The packaging container (30) is first filled wholly or at least partly with foam containing a non-oxidising gas, such as nitrogen, whereafter the wholly or partly filled packaging container (30) is filled with the pertinent food product. After this filling, the packaging container (30) is where necessary filled with additional foam so as to ensure that the, headspace above the product level in the packaging container (30) is entirely filled with foam when the packaging container (30) is 1 closed and sealed by thermosealing. The closed packaging container (30) filled with product and foam is thereafter subjected to the heat treatment for purposes of extending its shelf-life at a treatment temperature of at least 115 °C. |
