| Title |
The Impact of Organic Farming on Quality of Tomatoes Is Associated to Increased Oxidative Stress during Fruit Development
|
|---|---|
| Published in |
PLOS ONE, February 2013
|
| DOI | 10.1371/journal.pone.0056354 |
| Pubmed ID | |
| Authors |
Aurelice B. Oliveira, Carlos F. H. Moura, Enéas Gomes-Filho, Claudia A. Marco, Laurent Urban, Maria Raquel A. Miranda |
| Abstract |
This study was conducted with the objective of testing the hypothesis that tomato fruits from organic farming accumulate more nutritional compounds, such as phenolics and vitamin C as a consequence of the stressing conditions associated with farming system. Growth was reduced in fruits from organic farming while titratable acidity, the soluble solids content and the concentrations in vitamin C were respectively +29%, +57% and +55% higher at the stage of commercial maturity. At that time, the total phenolic content was +139% higher than in the fruits from conventional farming which seems consistent with the more than two times higher activity of phenylalanine ammonia lyase (PAL) we observed throughout fruit development in fruits from organic farming. Cell membrane lipid peroxidation (LPO) degree was 60% higher in organic tomatoes. SOD activity was also dramatically higher in the fruits from organic farming. Taken together, our observations suggest that tomato fruits from organic farming experienced stressing conditions that resulted in oxidative stress and the accumulation of higher concentrations of soluble solids as sugars and other compounds contributing to fruit nutritional quality such as vitamin C and phenolic compounds. |
X Demographics
The data shown below were collected from the profiles of 95 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 19 | 20% |
| United Kingdom | 10 | 11% |
| Spain | 8 | 8% |
| Ireland | 6 | 6% |
| Netherlands | 4 | 4% |
| Canada | 4 | 4% |
| Colombia | 2 | 2% |
| Australia | 2 | 2% |
| Japan | 2 | 2% |
| Other | 12 | 13% |
| Unknown | 26 | 27% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 74 | 78% |
| Practitioners (doctors, other healthcare professionals) | 10 | 11% |
| Scientists | 7 | 7% |
| Science communicators (journalists, bloggers, editors) | 4 | 4% |
Mendeley readers
The data shown below were compiled from readership statistics for 201 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 2 | <1% |
| France | 1 | <1% |
| Spain | 1 | <1% |
| Greece | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 195 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 32 | 16% |
| Student > Bachelor | 29 | 14% |
| Researcher | 27 | 13% |
| Student > Ph. D. Student | 24 | 12% |
| Student > Doctoral Student | 13 | 6% |
| Other | 38 | 19% |
| Unknown | 38 | 19% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 87 | 43% |
| Medicine and Dentistry | 18 | 9% |
| Biochemistry, Genetics and Molecular Biology | 14 | 7% |
| Environmental Science | 8 | 4% |
| Chemistry | 7 | 3% |
| Other | 24 | 12% |
| Unknown | 43 | 21% |