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Rattler, Sabine; Briviba, Karlis; Birzele, Barbara; Koepke, Ulrich. |
The effect of different agronomic strategies on the nutritional quality of head lettuce was investigated. The factors included were irrigation type, fertiliser input type and level. The assessed ingredient parameters were nitrate, lutein, ß-carotene and polyphenols. Hygiene was described by total aerobic bacterial count and number of coliform bacteria, Escherichia coli, Salmonella enteritidis, Enterococcus and Enterobacteriaceae. Lettuce treated with mineral nitrogen fertiliser (calcium ammonium nitrate) displayed a higher nitrate content than lettuce treated with organic manures (fresh farmyard manure (FYM), rotten FYM (fermented nettle extract). Nitrate concentration in lettuce tended to increase with increasing amounts of fertiliser, independent of... |
Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables. |
Ano: 2005 |
URL: http://orgprints.org/4452/4/Rattler_etal_4p_revised%2Ded.doc |
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Briviba, Karlis; Stracke, Berenicke A.; Rüfer, Corinna E.; Watzl, Bernhard; Weibel, Franco P.; Bub, Achim. |
The present study was performed to compare the effects on antioxidant activity and on DNA damage of organic and conventionally produced apples grown under controlled conditions in human peripheral blood lymphocytes. Six healthy volunteers consumed either organically or conventionally grown apples (Golden Delicious, 1000 g) from two neighboring commercial farms in a double-blinded, randomized, cross-over study. The average content of total identified and quantified polyphenols in the organically and conventionally produced apples was 308 and 321 µg/g fresh weight, respectively. No statistically significant differences in the sum of phenolic compounds or in either of the polyphenol classes were found between the agricultural methods. Consumption of neither... |
Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Fruit and berries. |
Ano: 2007 |
URL: http://orgprints.org/13339/1/briviba%2Detal%2D2007%2DJAFC%2DApples.pdf |
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