4 research outputs found
Factors affecting heavy metals accumulation in potato tubers / Czynniki wp艂ywaj膮ce na akumulacj臋 metali ci臋偶kich w bulwach ziemniaka
Badano wp艂yw wybranych czynnik贸w agrochemicznych na akumulacj臋 metali ci臋偶kich w bulwach ziemniaka. Gleby uprawne mog膮 by膰 zanieczyszczone metalami ci臋偶kimi. Pierwiastki, kt贸re wyst臋puj膮 w glebach w formach biodost臋pnych (mobilnych) mog膮 zosta膰 w艂膮czone do obiegu biologicznego, maj膮c tym samym negatywny wp艂yw na jako艣膰 plon贸w i zdrowie konsument贸w/ cz艂owieka. W badanych glebach oznaczono ca艂kowit膮 zawarto艣膰: Zn, Cu, Ni, Pb, Cd oraz udzia艂 tych pierwiastk贸w w formach mobilnych. Spo艣r贸d badanych pierwiastk贸w najbardziej mobilnym metalem by艂 o艂贸w, kt贸rego zakres zawarto艣ci w formach mobilnych wynosi艂: 0,100-0,295 mg鈭檏g-1, przekraczaj膮c dopuszczalne warto艣ci dla tego pierwiastka. Zawarto艣膰 o艂owiu w ziemniakach wynosi艂a: 0.244-0.855 mg鈭檏g-1 FM. Analiza statystyczna wykaza艂a istotn膮 korelacj臋 pomi臋dzy zawarto艣ci膮 pierwiastk贸w w formach mobilnych i ich zawarto艣ci膮 w ziemniakach oraz mi臋dzy odczynem badanych gleb, a ca艂kowit膮 zawarto艣ci膮 o艂owiu w ziemniakach. Nie zaobserwowano istotnej statystycznie korelacji pomi臋dzy zawarto艣ci膮 pr贸chnicy w glebach a zawarto艣ci膮 o艂owiu w ziemniakac
Changes of Polyphenolic Substances in the Anatomical Parts of Buckwheat (Fagopyrum esculentum Moench.) during Its Growth Phases
In this study the changes of total polyphenolics in different anatomical parts (stems, leaves, flowers and seeds) of common buckwheat (Fagopyrum esculentum Moench.) during vegetation period were analysed. The content of total polyphenolics was evaluated in growth phase I (formation of buds), phase II (at the beginning of flowering), phase III (full blossoming) and phase IV (full ripeness). In all growth phases (GP) the stems and leaves were evaluated and statistically significant differences in polyphenolics content between the two parts were confirmed. Statistically significant differences (p < 0.01) in polyphenolics content (in GP II and III) between stems and leaves; and between stems and flowers were found. In flowers an average of 13.8 times higher and in leaves 6 times higher concentration of polyphenolics in comparison with stems was measured. In GP III the content of polyphenolics in common buckwheat was following: flowers > leaves > achene > stems. In flowers an average of 11.9 times higher, in leaves 8.3 times higher and in achenes 5.9 times higher contents of polyphenolics compared with stems were found. In GP III and IV (leaves, achenes, stems) the leaves contained in average 20 times higher and achenes 5.6 times higher polyphenolics than stems