Some people regard frozen vegetables as a disappointing alternative when fresh veggies are not available. But that is likely to change with new methods of preparing food for cold storage.
Dr. Tony Savard and his team from Agriculture and Agri-Food Canada’s St-Hyacinthe Research Development Centre re-examined the usual way of treating vegetables -blanching – which refers to briefly heat-treating the vegetables before freezing. While this method is helpful for ensuring food safety and preventing freezer burn, it also affects the taste and texture which some people don’t like even when nutritional value is retained.
The team worked with Bonduelle Amérique as part of the Canadian Food Innovator research cluster, to come up with a fresh alternative for processing vegetables for freezing: partially drying them using low doses of microwaves combined with a vacuum process. Doing so avoided the breakdown of vegetable tissue that happens with freezing and thawing. This method preserves the natural flavour and even improves it in certain cases, while still ensuring food safety. Furthermore, the texture of the vegetables is maintained.
