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EN
This study presents a review of Polish and foreign papers dealing with the effects of various factors on the contents of nitrates and nitrites in potato tubers. The level of nitrates and nitrites in the tubers depends on many factors, among which the most important are the amount of available nitrogen, kind of soil, its richness and reaction as weil as variety of climatic conditions during vegetation. One of the most significant factors affecting the level of nitrates in potatoes is the rate, form and means of fertilizing with nitrogen as well as phosphorus and potassium fertilizing. It was found that all applied culinary techniques resulted in decreased nitrate and nitrite content in the tubers. During storage of potato tubers a significant lass in nitrate and nitrite content was observed depending on variety.
EN
Results of nitrite and nitrate determination in cured, cooked sausages performed in veterinary laboratories and in the Department of Hygiene of Food of Animal Origin in the National Veterinary Research Institute in 1996 are presented. Measurements were conducted according to the Polish Standards. Mean nitrate and nitrite in cured sausages (8676 samples) were 15.0±10.6 to 49.9±71.0 mg/kg and 32.4±27.9 to 62.7±34.8 mg/kg. The residue limit (125 mg/kg as the permissible sum of nitrate and nitrite concentration) was exceeded in 2.95% of the examined samples.
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