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标题：The changes of the polyphenol content and antioxidant activity in potato tubers (Solanum tuberosum L.) due to nitrogen fertilization
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作者：Janette Musilová ; Jaromír Lachman ; Judita Bystrická 等
期刊名称：Potravinarstvo : Scientific Journal for Food Industry
印刷版ISSN：1338-0230
电子版ISSN：1337-0960
出版年度：2013
卷号：7
期号：1
页码：164-170
DOI：10.5219/305
语种：English
出版社：Association HACCP Consulting
摘要：Cultivar is one of the most important internal factors affecting polyphenol concentration in the plants. However, influence of the grown locality, climate conditions and way of cultivation belong to important external factors. In our experiment the influence of different nitrogen doses (0 - 40 - 80 - 120 - 160 - 240 kg N.ha^-1) applied in the form of Vermikompost on the total polyphenol content and derived total antioxidant activity in cv. Sorento were investigated. While in the 1^st - 5^th variants the determined polyphenol content in dry mater of potato tubers decreased from 399.2 to 70.40 mg.kg^-1, in the 6^th variant that was twice higher in comparison to the 5^th variants (135.6 mg.kg^-1). The statistically significant differences in values of total polyphenol content between variants (polynomial function of 2^nd degree) were confirmed. The study also confirmed a strong statistical correlation between the content of polyphenols and the content of antioxidant activity has been confirmed (sign. F: 3.24E^-10). The highest value of antioxidant activity was observed in the first variant. From the first to the fifth variant (7.62 - 4.84%), the value of antioxidant activity was decreasing and in the sixth variant this value increased to 6.31%.
其他摘要：Cultivar is one of the most important internal factors affecting polyphenol concentration in the plants. However, influence of the grown locality, climate conditions and way of cultivation belong to important external factors. In our experiment the influence of different nitrogen doses (0 - 40 - 80 - 120 - 160 - 240 kg N.ha-1) applied in the form of Vermikompost on the total polyphenol content and derived total antioxidant activity in cv. Sorento were investigated. While in the 1st - 5th variants the determined polyphenol content in dry mater of potato tubers decreased from 399.2 to 70.40 mg.kg-1, in the 6th variant that was twice higher in comparison to the 5th variants (135.6 mg.kg-1). The statistically significant differences in values of total polyphenol content between variants (polynomial function of 2nd degree) were confirmed. The study also confirmed a strong statistical correlation between the content of polyphenols and the content of antioxidant activity has been confirmed (sign. F: 3.24E-10). The highest value of antioxidant activity was observed in the first variant. From the first to the fifth variant (7.62 - 4.84%), the value of antioxidant activity was decreasing and in the sixth variant this value increased to 6.31%.
关键词：potato; polyphenol; antioxidant activity; nitrogen fertilization
其他关键词：potato;polyphenol;antioxidant activity;nitrogen fertilization