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001-es BibID:	BIBFORM108817
035-os BibID:	(Scopus)85148342638 (WoS)000934691100002
Első szerző:	Kovács Zoltán (biotechnológus)
Cím:	Nutrichemical alterations in different fractions of multiple-harvest alfalfa (Medicago sativa L.) green biomass fortified with various selenium forms / Zoltán Kovács, Áron Soós, Béla Kovács, László Kaszás, Nevien Elhawat, Mutasem Razem, Szilvia Veres, Miklós G. Fári, Judit Koroknai, Tarek Alshaal, Éva Domokos-Szabolcsy
Dátum:	2023
ISSN:	0032-079X 1573-5036
Megjegyzések:	Background and Aims Wet processed alfalfa-based products can provide high-quality concentrated protein, also contain nutrients and phytochemicals. Agronomic fortification can increase selenium (Se) incorporation into green biomass. For this reason, the aim was to investigate how different forms of Se are incorporated into the green biomass of multiple-harvest alfalfa and how they affect the chemical quality of the processed product candidates. Methods In this research, alfalfa was enriched with three forms of selenium at different concentrations [selenate (Se(VI)); selenite (Se(IV)); and red elemental Se (Se0)]. The fortified green biomass was fractionated into leaf protein concentrate (LPC), fiber and phytoserum, and changes in selenium content and speciation, protein and phytochemical composition were determined. Results Total Se content in alfalfa fractions drastically reduced within the four consecutive harvests, particularly for Se(VI) and Se(IV) forms, and significantly varied according to the Se treatments. Selenomethionine (SeMet) was the predominant organic Se species in LPC (35.7-246.0 ?g g?1 DW) and fiber (9.0- 47.7 ?g g?1 DW) fractions. Se-fortification induced considerable changes in the crude protein of LPC, which varied between 29-45 (m/m)%. Phytochemical composition markedly varied among Se-treatments. Besides several flavonoids, aglycones and glycosyl derivatives, apigenin glucuronide, and apigenin were the most abundant with a concentration up to 170.85 ?g g?1 DW. Medicagenic acid concentration was below 1.86 ?g g?1 DW in LPC. Conclusions Se-enhanced alfalfa green biomass could provide functional products, such as LPC, for human and animal consumption with enhanced nutritional value, including Se, protein, and phytochemical contents.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Plant and Soil. - 487 : 1-2 (2023), p. 173-195. -
További szerzők:	Soós Áron (1990-) (élelmiszerbiztonsági és -minőségi mérnök) Kovács Béla (1963-) (okleveles vegyész, angol szakfordító) Kaszás László (1989-) (kertészmérnök) Elhawat, Nevien Adel (1984-) (agrármérnök) Razem, Mutasem Veres Szilvia (1972-) (biológus, biológia középiskolai tanár, angol-magyar szakfordító) Fári Miklós (1953-) (kertészmérnök) Koroknai Judit Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Domokos-Szabolcsy Éva (1978-) (molekuláris biológus)
Pályázati támogatás:	GINOP-2.2.1-15-2017-00051 GINOP TKP2021-EGA-20 Egyéb TKP2020-IKA-04 Egyéb
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001-es BibID:	BIBFORM107526
035-os BibID:	(WOS)000417721600020 (Scopus)85031501773
Első szerző:	Shalaby, Tarek
Cím:	Selenium fortification induces growth, antioxidant activity, yield and nutritional quality of lettuce in salt-affected soil using foliar and soil applications / Tarek Shalaby, Yousry Bayoumi, Tarek Alshaal, Nevien Elhawat, Attila Sztrik, Hassan El-Ramady
Dátum:	2017
ISSN:	0032-079X 1573-5036
Megjegyzések:	Aims Distribution of selenium (Se) in soils around the world is not identical and many soils are classified as Sepoor soils. Therefore, Se fortification of crops grown on these soils is crucial, where increasing Se intake by human - below toxic threshold - is vital for better health. The recent work aims to investigate the possible use of Se to alleviate the detrimental effects of soil salinity on lettuce and enhance its growth, yield quality and Se enrichment. Methods Field experiments were conducted during two successive seasons (2016 and 2017) in salt-affected soil (EC 4.49 dS m?1, pH 8.65) using four concentrations of Se (0, 50, 75 and 100 ppm) by three different application methods. Antioxidant capacity, ion leakage, Se content in plant and soil, yield and vegetative parameters of lettuce were measured. Results The results showed that Se addition mitigated the detrimental effect of salinity on lettuce growth and its development. Se application (100 ppm) increased also the head weight, leaf area, leaves dry weight and chlorophyll content by 46.4, 66.4, 61.8 and 31.5%, respectively, compared to control plants. Likewise, catalase (CAT) and ascorbate peroxidase (APX) activities increased by 108.8 and 123.6%, respectively, as a result for using 100 ppm of Se. Otherwise, Se (100 ppm) reduced the electrolyte leakage from lettuce leaves by 68.4% against control. The positive effect of Se (100 ppm) on lettuce under salinity was fully verified with data of total yield which increased by 42.1% over control. Foliar application increased Se content in lettuce without exceeding the toxic level and residual Se in soil was the lowest among other treatments. Conclusion The present work reports that in saltaffected soils spraying lettuce with Se (100 ppm) improves its growth, antioxidant capacity, Se fortification and yield quality.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Plant and Soil. - 421 : 1-2 (2017), p. 245-258. -
További szerzők:	Bayoumi, Yousry Alshaal, Tarek Ali Ahmed Ibrahim (1980-) (Soil Scientist) Elhawat, Nevien Adel (1984-) (agrármérnök) Sztrik Attila (1983-) (táplálkozástudomány) El-Ramady, Hassan (1969-) (agrármérnök)
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