When we go to the supermarket or to look at the market, choose it with care and we think it is inanimate, something dead that serves only to be eaten and to bring benefits to our body. In fact, according to a study by Janet Braam of Rice University, located in Houston (USA), the fruit we buy would be alive even when disconnected from the branch on which it grew, in the sense that vegetables and fruits are able to perceive changes of the day .

In a nutshell, the American study – published in the journal Current Biology – suggests that the way in which we preserve the fruit, but also vegetables and vegetables, has real consequences on its nutritional value and therefore our health. The finding is surprising and it is not only important biologically, “fruits and vegetables, even after the harvest, they are able to respond – explains Braam – to signals sent from the light and consequently change their biology in ways that affect their contribution healthy and insect resistance. ”


The conclusions reached by the American study lead us to deal with more “care” products we buy, since they appear to be still alive after being collected from the branches: “Our results – adds Janet Braam – show that it is necessary to preserve fruit and vegetables in locations that comply with the cycles of light and dark in order to improve and ensure the nutritional value. ” This is because fresh produce from the bench are still influenced by circadian rhythms : the cells, in fact, continue to be involved in metabolic processes and survive the same for a bit ‘of time after harvest.

The Braam started this investigation first observing the properties of the cabbage , and the way they reacted to the stimulus of light. He also used the lettuce, spinach, zucchini, sweet potatoes, cranberries and carrots. It was found that these products, as well as all their peers, even after harvests continue to keep alive their own biological clock .