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The use of chromatographic and spectroscopic (colometric) methods for evaluation of quercetine in dietary supplements of plant origin

100%
Kostecka M.
|
2012
|
vol. 67
|
issue 1-2
155-161
EN
Recent years have witnessed a rapid increase in demand for dietary supplements which can be purchased over the counter and without medical consultation. They are widely advertised as panacea for all ailments that afflict the contemporary consumer. Products containing extracts from native and tropical plants as well as herbs have a growing share of the supplement market. TLC is a simple and inexpensive method that can be used in preliminary analyses of product quality. Thin layer chromatography is also an effective technique for isolating biologically active substances from complex pharmaceutical products and supplements. Quantitative analysis shows that quantitative and qualitative inaccuracies and misstatements may occur in the case of dietary supplements.
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Dieta i styl życia jako czynniki wpływające na płodność

63%
Bojanowska M., Kostecka M.
Kosmos
|
2018
|
vol. 67
|
issue 2
425-439
PL
Zaburzenia płodności mają związek nie tylko z wiekiem (starzenie się jajników i jąder oraz pogarszanie się jakości gamet), ale również wynikają z negatywnego wpływu czynników środowiskowych, zawodowych i stylu życia. Do elementów stylu życia zalicza się sposób żywienia, aktywność fizyczną oraz palenie papierosów i spożywanie alkoholu. W pracy omówiono rolę poszczególnych składników odżywczych, takich jak: białka, węglowodany, tłuszcze, witaminy i składniki mineralne w kontekście procesów reprodukcyjnych. Nieprawidłowy sposób żywienia, nadmiar lub niedobór masy ciała to czynniki, które w znacznym stopniu mogą wpływać na płodność zarówno kobiet, jak i mężczyzn.
EN
The fertility disorders are associated not only with the age (aging of the ovaries and testes and the deterioration of the quality of gametes), but also with the negative impact of environmental and occupational factors, as well as lifestyle. The elements of lifestyle include diet, physical activity, smoking and alcohol consumption. The paper discusses the role of individual nutrients such as proteins, carbohydrates, fats, vitamins and minerals in the context of reproductive processes. Improper diet, excess or shortage of body weight are the factors that significantly affect the fertility of both women and men.
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