I want to know the difference in quantity of nutrients of organic vegetables and those grown using artificial fertilisers.
Specially antioxidants, vitamins and minerals
Hi, you can use refractometery method in measuring nutrients in organic vegetables and those grown using fertilizers.
There are numerous chemical methods available. Check some textbooks or search the internet for appropriate ones for your purposes.
antioxidant activity can be determined through various method such as DPPH, FRAP, total phenolic and so on through colorimetric techniques in lab. Please refer attached files to find out more. minerals content can be quantified through ICP-MS or ICP-OES or AAS after digest the sample using acid.
Organic food has more of the antioxidant compounds linked to better health than regular food, and lower levels of toxic metals and pesticides, according to the most comprehensive scientific analysis to date.
The team, led by Prof Carlo Leifert at Newcastle University, concludes that there are "statistically significant, meaningful" differences, with a range of antioxidants being "substantially higher" – between 19% and 69% – in organic food. It is the first study to demonstrate clear and wide-ranging differences between organic and conventional fruits, vegetables and cereals.
so you can determine the Total polyphenolic content and antioxidant activity of vegetables grown both organically and with artificial fertilizers to differentiate their nutritive quality.
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