Reducing food waste: can we keep open canned sardines in the refrigerator?

Researchers from the University of Porto studied the shelf life at 4°C of open canned sardines, depending on the type of seasoning (sardines in brine, vegetable oil, tomato sauce).
 
A team of researchers from the University of Porto in Portugal examined the shelf life of canned sardines after opening to increase consumer awareness of their quality and safety and reduce food waste. Indeed, canned fish has a high shelf life, but after opening, it undergoes microbiological and chemical changes that compromise its stability. Yet, depending on can size, a consumer may not eat the full content.