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Yessi Pratiwi — July 10, 2007 / 1:07 pm
A 10-year study comparing organic tomatoes with those grown conventionally suggests that organic food is healthier for us.It was told in Journal of Agricultural and Food Chemistry. The finding can be explained by the availability of nitrogen. Flavonoids are produced as a defence mechanism that can be triggered by nutrient deficiency. The inorganic nitrogen in conventional fertiliser is easily available to plants and so, the team suggests, the lower levels of flavonoids are probably caused by overfertilisation.Flavonoids such as these are known antioxidants and have been linked to reduced rates of cardiovascular disease, some forms of cancer and dementia. According to the new findings, levels of the flavonoids quercetin and kaempferol were found to be on average 79 and 97 per cent higher, respectively, in organic tomatoes.
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July 6th, 2008 at 3:11 pm