Researchers at the National Institute of Plant Genome Research in India have found a surprisingly simple way to extend the shelf life of fresh tomatoes. Most tomatoes will last about 10-15 days before going unappealingly squishy. The enhanced tomatoes last 45 days or more and are firmer than unmodified tomatoes, which I imagine makes for great tomato sandwiches!
Before getting into the how, let’s talk about why this research is important. According to Enhancement of fruit shelf life by suppressing N-glycan processing enzymes in this week’s PNAS, post-harvest fruit and vegetable softening is a big problem, with losses accounting for almost 50% of all produce in developing countries. India, the country that funded the research, and the world’s 2nd largest fruit and vegetable producer, loses 35-40% of produce to softening.
We all know that post-consumer food waste is a big problem, and we can alleviate this somewhat in our homes and by choosing restaurants that try to reduce waste. But there isn’t much we can do about pre-consumer waste – from grain that rots in the silo due to fungus to tomatoes that rot in transit due to ripening. By reducing pre-consumer food waste, we can reduce the number of acres needed to produce the same amount of food. In India, preventing all fruit and vegetable softening would be like reducing the amount of land needed to grow fruits and vegetables by 35-40%!
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