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Type of publication: Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Sakalauskienė, Sandra;Januškaitienė, Irena;Juknys, Romualdas;Miliauskienė, Jurga
Title: The effect of UV-B radiation on phytochemical properties of Spinacia oleracea
Is part of: Rural development 2013 : the 6th international scientific conference, 28-29 November, 2013, Aleksandras Stulginskis university, Akademija, Kaunas district, Lithuania : proceedings. , 2013, vol. 6, book 2
Extent: p. 227-231
Date: 2013
Keywords: Anthocyanins;Ascorbic acid;DPPH;Phenols;Tocopherols;Spinach
Abstract: The influence of different dosages of UV-B radiation on spinach antioxidant phytochemical constituents was studied. Spinach (Spinacia oleracea L.) cv. ‘Andromeda H’ and ‘Matador’ were the objects of this study. Experiment was conducted in closed growth chambers of controlled environment at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry. Plants were placed in different growth chambers at 18/13 °C day/night temperature and 12 h photoperiod. High-pressure sodium lamps (SON-T Agro, Philips) were used for illumination (150 µmol m-2 s-1). UV-B radiation (290 – 320 nm) was provided by UV-B fluorescent tubes (TL 40W/12 RS UV-B Medical, Philips). Spinach plants were exposed to 0 kJm-2 day-1, 2 kJm-2 day-1, 4 kJm-2 day-1 and 6 kJm-2 day-1 UV-B for 3 days. The results of investigation showed that more intense (6 kJ) UV-B radiation reduced the ascorbic acid amount in the investigated species spinach leaves. The lowest DPPH radical immobilization ability of both species spinaches is determined when they are affected by the UV-B. The amount of phenolic compounds in spinaches depended on their species and UV-B dose. Spinaches of both species exposed to 4 kJ UV-B radiation have accumulated a larger amount of anthocyanins. ”Matador” spinaches affected by UV-B radiation, accumulated the significantly lower amount of total tocopherols
Affiliation(s): Aplinkotyros katedra
Gamtos mokslų fakultetas
Lietuvos agrarinių ir miškų mokslų centras, Sodininkystės ir Daržininkystės Institutas
Lietuvos agrarinių ir miškų mokslų centro filialas, Sodininkystės ir daržininkystės institutas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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