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- Title
Concentration of calcium and iron in collard green of conventional and organic agriculture.
- Authors
Estevão, Simone Tessarini; Poltronieri, Fabiana
- Abstract
The vegetable Brassica oleracea var. acephala, popularly known as collard green is very consumed in Brazil and is important due of the presence of many nutrients. It can be grown both by conventional agriculture (CA), with the use of chemical inputs, and by organic agriculture (OA), characterized by the elimination of the use of artificial pesticides and other inputs. In regard to nutritional aspects related to food obtained through organic agriculture is evident the lack of compositional data, mainly in relation to minerals. So the object of this work is to determine and compare the calcium and iron concentration in collard green grown by CA and by OA, marketed in São Paulo. The mineral were determined by atomic absorption spectrometry with flame and the results for the collard green CA, in wet basis, were 76.95 ± 12.24 mg of Ca 100g-1 and 2.55 ± 1.15 mg of Fe 100g-1, and for collard green OA were: 60.64 ± 8.16 mg of Ca 100g-1 and 1.51 ± 0.26 mg of Fe 100g-1. The results indicate that the samples of collard green produced by organic agriculture the concentration of calcium and iron was lower (p<0.05) than the results for the collard green produced by conventional agriculture.
- Subjects
ORGANIC farming; COLLARDS; CALCIUM
- Publication
Brazilian Journal of Applied Technology for Agricultural Science / Revista Brasileira de Tecnologia Aplicada nas Ciências Agrárias, 2012, Vol 5, Issue 3, p67
- ISSN
1983-6325
- Publication type
Article
- DOI
10.5777/PAeT.V5.N3.08