Wyniki wyszukiwania

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Analiza zawartości kofeiny w naparach kakao z wykorzystaniem wysokosprawnej chromatografii cieczowej

100%

Bilek M., Stawarczyk K., Stepien A.

Bromatologia i Chemia Toksykologiczna

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2013

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tom 46

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nr 4

2

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Aktywność przeciwrodnikowa soków drzewnych z terenu podkarpacia

100%

Bilek M., Siembida A., Stawarczyk K., Cieslik E.

Żywność Nauka Technologia Jakość

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2015

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tom 22

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nr 4

W pracy oznaczono zawartość związków fenolowych ogółem oraz zdolność do wygaszania wolnego kationorodnika ABTS•+ soków drzewnych ośmiu gatunków drzew: brzozy zwisłej in. brodawkowatej (Betula pendula Roth.), brzozy omszonej (Betula pubescens Ehrh.), grabu pospolitego (Carpinus betulus L.), klonu zwyczajnego (Acer platanoides L.), klonu jesionolistnego (Acer negundo L.), orzecha czarnego (Juglans nigra L.), olszy czarnej (Alnus glutinosa Gaertn.) i wierzby białej (Salix alba L.). Największą średnią zawartość sumy związków fenolowych (3,7 mg GAE/100 ml), jak również najwyższą średnią aktywność przeciwrodnikową (8,82 % RSA) oznaczono w soku orzecha czarnego. Z kolei najmniejszą średnią zawartość sumy związków fenolowych (1,56 mg GAE/100 ml) i najniższą średnią aktywność przeciwrodnikową (1,36 % RSA) stwierdzono w soku z grabu pospolitego. Wykazano także korelację pomiędzy zawartością związków fenolowych w soku z klonu jesionolistnego a jego aktywnością przeciwrodnikową. W przypadku sześciu gatunków drzew wykazano zależność pomiędzy ich wiekiem a sumą związków fenolowych w analizowanych sokach. Większa zawartość tych związków występowała w sokach starszych drzew. Tym niemniej dowiedziono, że soki drzewne, w porównaniu z innymi produktami spożywczymi, są stosunkowo ubogim źródłem związków o charakterze przeciwutleniającym.

3

Circadian and seasonal changes in honeybee (Apis mellifera) worker susceptibility to diazinon, teflubenzuron, pirimicarb, and indoxacarb

100%

Piechowicz B., Grodzicki P., Stawarczyk M., Stawarczyk K.

Polish Journal of Environmental Studies

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2013

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tom 22

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nr 5

Circadian and seasonal changes in the susceptibility of honeybee (Apis mellifera) workers to intoxication by organophosphate, benzoylphenyl urea, carbamate, and oxadiazine insecticides have been studied from 2008 to 2009. Animals were collected in two apiaries located in the surroundings of Mielec and Tarnobrzeg in the Sub-Carpathian Province. The experiments consisted of intoxication by select xenobiotics of the subsequent groups of animals in two-hour intervals for a period of 24 hours and the analysis of their survivability. Experiments were carried out in spring and summer. The results suggest that the susceptibility of bees to different groups of insecticides varies significantly, both in the circadian and seasonal rhythms.

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Analysis of selected chemical parameters in Piemontese wines

100%

Stepien A. E., Stawarczyk K., Bilek M., Kedziora K. M.

Roczniki Państwowego Zakładu Higieny

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2015

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tom 66

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nr 3

Background. Piemontese wines are well known and valued all over the world. The most popular of them are Barolo and Barbaresco wines. However, in Poland, they are still little known and only now are being gradually introduced to a wider range of consumers. Objective. The aim of this study was to evaluate the content of inorganic anions, minerals, sugars and glycerol of Piemontese wines from micro-region Langhe, classified as DOCG („Denominazione di Origine Controllata e Garantita”, ie. controlled designation of origin guaranteed) and DOC („Denominazione di Origine Controllata”, ie. controlled designation of origin) products. Material and Methods. Seven types of red wines and one type of white wine were tested. High Performance Ion Chromatography with conductometric detection (HPLC-CD) was used to measure the content of inorganic anions, ie. fluorides, chlorides, sulfates and phosphates. Flame atomic absorption spectrometry (F-AAS) was used to measure the content of minerals, ie. magnesium, calcium, sodium, copper, potassium, zinc and iron, while High Performance Liquid Chromatography with charged aerosol detection (HPLC-CAD) was used to measure the content of glycerol and sugars, ie. fructose, glucose and sucrose. Results. Our studies show that although Piemontese wines are characterized by a relatively low content of minerals in comparison with the wines from other regions, they contain a lot of ingredients that have beneficial effects for human health. Moreover, we observed that the studied wines contain particularly high concentration of inorganic ions – phosphates and fluorides. Furthermore, all tested red wines show far reaching similarities in their chemical properties, which is possibly a direct consequence of using in their production locally cultivated grape varieties. Conclusions. Analysis of the wines from the Piemont region, classified as DOCG, DOC, confirmed that these are dry wines of a high quality.

5

The effect of synthetic pyrethroids on the intensity of feeding of Arion lusitanicus

100%

Piechowicz B., Stawarczyk K., Stawarczyk M.

Folia Malacologica

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2012

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tom 20

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nr 1

6

Zawartość wybranych składników mineralnych i anionów nieorganicznych w sokach drzewnych z terenu Podkarpacia

100%

Bilek M., Stawarczyk K., Luczaj L., Cieslik E.

Żywność Nauka Technologia Jakość

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2015

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tom 22

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nr 3

Analizowano soki drzewne ośmiu gatunków drzew z Podkarpacia: brzozy zwisłej (brodawkowatej) – Betula pendula Ehrh., brzozy omszonej – Betula pubescens Ehrh., grabu pospolitego – Carpinus betulus L., klonu zwyczajnego – Acer platanoides L,. klonu jawora – Acer pseudoplatanus L., klonu polnego – Acer campestre L., klonu jesionolistnego – Acer negundo L. i klonu srebrzystego – Acer saccharinum L. Określono zawartość anionów nieorganicznych: chlorków, azotanów(V), siarczanów(VI) oraz fosforanów(V), a także składników mineralnych: miedzi, cynku, wapnia, magnezu, sodu i potasu. Największą średnią zawartość chlorków (32,68 mg·l⁻¹) i siarczanów (21,8 mg·l⁻¹) oznaczono w sokach grabowych, a magnezu (18,96 mg·l⁻¹) i wapnia (30,52 mg·l⁻¹) w sokach z klonu polnego. W sokach z klonu jesionolistnego stwierdzono największą średnią zawartość fosforanów (114,53 mg·l⁻¹), miedzi (1,45 mg·l⁻¹) i azotanów (25,99 mg·l⁻¹), a w soku z brzozy zwisłej – cynku (1,85 mg·l⁻¹) i sodu (0,59 mg·l⁻¹). Soki z klonu zwyczajnego odznaczały się z kolei największą średnią zawartością potasu (82,15 mg·l⁻¹). Otrzymane wyniki zestawiono z obowiązującymi w Polsce normami żywieniowymi. Wskazują one, że soki drzewne mogą być wartościowym źródłem składników mineralnych, szczególnie miedzi i cynku, w mniejszym stopniu wapnia, magnezu i fosforu. Jednocześnie stwierdzono znikome zagrożenie ze strony składników potencjalnie niekorzystnych dla ludzkiego zdrowia, tzn. anionów nieorganicznych: azotanów(V) i siarczanów(VI) oraz sodu.

7

The effect of temperature and pesticides on feeding behaviour of Arion lusitanicus

100%

Stawarczyk K., Stawarczyk M., Piechowicz B.

Folia Malacologica

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2012

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tom 20

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nr 1

8

Selected pesticides as food attractants for Arion lusitanicus

100%

Stawarczyk M., Piechowicz B., Stawarczyk K.

Folia Malacologica

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2012

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tom 20

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nr 1

9

Circadian changes in susceptibility of young honeybee workers to intoxication by pyrethroid, carbamate, organophosphorus, benzoyl urea and pyridine derivative insecticides

100%

Piechowicz B., Stawarczyk K., Stawarczyk M.

Journal of Plant Protection Research

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2012

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tom 52

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nr 2

In the years 2009 and 2010, in the apiaries surrounding Tarnobrzeg and Leżajsk, Poland (close to the Carpathian Mountains) research was carried out on diurnal changes in the sensitivity of young honey bee (Apis mellifera) workers to insecticides from various chemical groups: pyrethroids (esfenvalerate, cyhalothrin, alpha-cypermethrin, beta-cyfluthrin, deltamethrin), derivatives of pyridine (pyriproxyfen), carbamate (pirimicarb), organophosphate (diazinon), and benzoyl urea derivative (teflubenzuron). The analyses consisted of intoxicating subsequent groups of honey bees in 2-hour intervals, for a period of 24 hours with selected xenobiotics. The results received indicate that the honey bee shows a statistically significant susceptibility to insecticides, changing in the diurnal rhythm.

10

Antioxidative capacity of birch saps

88%

Bilek M., Siembida A., Gostkowski M., Stawarczyk K., Cieslik E.

Biotechnology and Food Science

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2017

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tom 81

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nr 1

11

Wild food plants and fungi used by Ukrainians in the western part of the Maramures region in Romania

88%

Luczaj L., Stawarczyk K., Kosiek T., Pietras M., Kujawa A.

Acta Societatis Botanicorum Poloniae

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2015

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tom 84

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nr 3

Wild food and fungi use in the countryside has always been an important part of human-nature relationships. Due to social changes in most rural areas of Europe this part of traditional ecological knowledge is shrinking. The aim of our study was to record the use of wild foods and plants among the Ukrainian (Carpatho-Rusyns) minority in the western part of Romanian Maramureę. We carried out 64 interviews in two villages. Voucher specimens were collected and DNA barcoding was used to identify most fungi taxa. We recorded the use of 44 taxa of plants altogether (including 8 taxa used only for herbal teas) and 24 taxa of fungi. On average 7.7 species of plants and 9.7 species of fungi were listed per interview. Edible fungi are thus an important part of local cuisine and they are eagerly gathered by everyone. The use of a few woodland bracket fungi is worth pointing out. No signs of degeneration of this knowledge were observed. Wild fruits are less collected now and wild greens are rarely collected nowadays. This pattern is typical of many places in Central Europe.

12

Mineral content of tree sap from the Subcarpathian region

76%

Bilek M., Stawarczyk K., Gostkowski M., Olszewski M., Kedziora K. M., Cieslik E.

Journal of Elementology

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2016

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tom 21

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nr 3

Tree sap has been used for centuries not only as a source of nutrients available in early spring but also as medicinal substance in folk medicine. Traditionally, it was used to treat various conditions, mostly anaemia and chronic fatigue. This study has been designed to establish the content of metallic elements (sodium, potassium, calcium, magnesium, zinc and copper) in sap collected from eight different species (silver birch, downy birch, hornbeam, Norway maple, boxelder maple, black walnut, black alder and white willow) and to identify which sap has mineral content which would be most beneficial for human health. We measured concentrations of calcium, magnesium, sodium, potassium and zinc on an atomic absorption spectrometer equipped with single-element, hollow cathode lamps and an air/acetylene burner. The content of copper was determined using an atomic absorption spectrometer with Zeeman correction equipped with an electrothermal atomizer and argon as inert gas. White willow sap was determined to have the highest concentrations of magnesium, zinc, calcium and potassium. Moreover, this sap contained the lowest concentration of sodium among all the tree species. The sap with the lowest detected concentration of the metallic elements originated from black alder and boxelder. In conclusion, tree sap can be a valuable source of metallic elements, namely copper, zinc and magnesium, in human diet. Tree sap tapped from white willow is the most valuable in terms of its mineral content. Moreover, the most popular sap of sliver birch has proven to be a rich source of magnesium and zinc

13

Metabolic activity of tree saps of different origin towards cultured human cells in the light of grade correspondence analysis and multiple regression modeling

76%

Wnorowski A., Bilek M., Stawarczyk K., Gostkowski M., Olszewski M., Wojciak-Kosior M., Sowa I.

Acta Societatis Botanicorum Poloniae

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2017

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tom 86

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nr 2

Tree saps are nourishing biological media commonly used for beverage and syrup production. Although the nutritional aspect of tree saps is widely acknowledged, the exact relationship between the sap composition, origin, and effect on the metabolic rate of human cells is still elusive. Thus, we collected saps from seven different tree species and conducted composition-activity analysis. Saps from trees of Betulaceae, but not from Salicaceae, Sapindaceae, nor Juglandaceae families, were increasing the metabolic rate of HepG2 cells, as measured using tetrazolium-based assay. Content of glucose, fructose, sucrose, chlorides, nitrates, sulphates, fumarates, malates, and succinates in sap samples varied across different tree species. Grade correspondence analysis clustered trees based on the saps’ chemical footprint indicating its usability in chemotaxonomy. Multiple regression modeling showed that glucose and fumarate present in saps from silver birch (Betula pendula Roth.), black alder (Alnus glutinosa Gaertn.), and European hornbeam (Carpinus betulus L.) are positively affecting the metabolic activity of HepG2 cells.

14

Circadian and seasonal changes in honeybee (Apis mellifera) worker susceptibility to pyrethroids

76%

Piechowicz B., Grodzicki P., Stawarczyk K., Piechowicz I., Stawarczyk M., Zwolak A.

Polish Journal of Environmental Studies

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2016

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tom 25

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nr 3

We examined the susceptibility of the worker honeybee Apis mellifera L. to pyrethroids. Bees were intoxicated by selected synthetic pyrethroids (active substances: beta-cyfl uthrin, deltamethrin, alphacypermethrin, lambda-cyhalothrin, esfenvalerate, and bifenthrin) and 72 hours after intoxication the number of surviving insects was determined. It was observed that the susceptibility of the honeybee to pyrethroids (expressed herein as the survival rate) was changing in diurnal rhythm, ranging from 100% (for a majority of substances in both seasons) to 11.1±0.37% (deltamethrin) and 11.1±0.73% (esfenvalerate) in spring, and 11.1±0.73% (esfenvalerate) and 4.6±0.17% (bifenthrin) in summer. The lowest susceptibility of bees to pyrethroids occurred during the night, when the honeybees were characterized by reduced motility and did not fl y out for foraging, whereas the highest susceptibility was observed during the day, a natural time for seeking food. Along with diurnal changes in the susceptibility described above, differences dependent on the seasons in which the intoxication took place were also observed. Insects intoxicated in summer were less susceptible to pyrethroids than those intoxicated in spring.

15

Cereal grass juice in wound healing: hormesis and cell-survival in normal fibroblasts, in contrast to toxic events in cancer cells

76%

Karbarz M., Mytych J., Solek P., Stawarczyk K., Tabecka-Lonczynska A., Koziorowski M., Luczaj L.

Journal of Physiology and Pharmacology

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2019

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tom 70

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nr 4

16

Zawartość cukrów w sokach drzewnych z terenu Podkarpacia

76%

Bilek M., Stawarczyk K., Siembida A., Strzemski M., Olszewski M., Cieslik E.

Żywność Nauka Technologia Jakość

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2015

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tom 22

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nr 6

Oznaczono zawartość cukrów w sokach drzewnych sześciu gatunków drzew rosnących na terenie Podkarpacia. Materiał doświadczalny stanowiły soki z drzew gatunków: brzoza zwisła in. brodawkowata (Betula pendula Roth.), brzoza omszona (Betula pubescens Ehrh.), grab pospolity (Carpinus betulus L.), klon zwyczajny (Acer platanoides L.), klon jesionolistny (Acer negundo L.) oraz wierzba biała (Salix alba L.). Analizę jakościową cukrów przeprowadzono metodą wysokosprawnej chromatografii cienkowarstwowej (HPTLC), a analizę ilościową – metodą wysokosprawnej chromatografii cieczowej z detekcją światła rozproszonego (HPLC-ELSD). W sokach pozyskanych z drzew z rodzajów: brzoza oraz grab dominowała glukoza oraz fruktoza, a w sokach klonów i wierzby – sacharoza. Średnia zawartość sumy cukrów wynosiła: w sokach grabowych – 0,333 g/100 ml, klonu jesionolistnego – 1,109 g/100 ml, brzozy zwisłej – 0,897 g/100 ml, wierzby białej – 0,672 g/100 ml, brzozy omszonej – 0,475 g/100 ml, zaś klonu zwyczajnego – 1,083 g/100 ml. W soku klonu jesionolistnego oznaczono najwięcej cukrów (1,214 g/100 ml), a w soku grabu – najmniej (0,302 g/100 ml). Jedynie wyniki analizy soku z brzozy zwisłej są porównywalne z sokami brzozowymi pochodzącymi z krajów Europy Północnej i Ameryki Północnej.

17

The smell of beer as a factor affecting the emission of carbon dioxide by Arion lusitanicus auct. non-Mabille

64%

Piechowicz B., Rebisz E., Grodzicki P., Zareba L., Balawejder M., Pieniazek M., Stawarczyk K., Piechowicz I.

Annals of Animal Science

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2016

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tom 16

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nr 2

Ograniczanie wyników

Analiza zawartości kofeiny w naparach kakao z wykorzystaniem wysokosprawnej chromatografii cieczowej

Aktywność przeciwrodnikowa soków drzewnych z terenu podkarpacia

Circadian and seasonal changes in honeybee (Apis mellifera) worker susceptibility to diazinon, teflubenzuron, pirimicarb, and indoxacarb

Analysis of selected chemical parameters in Piemontese wines

The effect of synthetic pyrethroids on the intensity of feeding of Arion lusitanicus

Zawartość wybranych składników mineralnych i anionów nieorganicznych w sokach drzewnych z terenu Podkarpacia

The effect of temperature and pesticides on feeding behaviour of Arion lusitanicus

Selected pesticides as food attractants for Arion lusitanicus

Circadian changes in susceptibility of young honeybee workers to intoxication by pyrethroid, carbamate, organophosphorus, benzoyl urea and pyridine derivative insecticides

Antioxidative capacity of birch saps

Wild food plants and fungi used by Ukrainians in the western part of the Maramures region in Romania

Mineral content of tree sap from the Subcarpathian region

Metabolic activity of tree saps of different origin towards cultured human cells in the light of grade correspondence analysis and multiple regression modeling

Circadian and seasonal changes in honeybee (Apis mellifera) worker susceptibility to pyrethroids

Cereal grass juice in wound healing: hormesis and cell-survival in normal fibroblasts, in contrast to toxic events in cancer cells

Zawartość cukrów w sokach drzewnych z terenu Podkarpacia

The smell of beer as a factor affecting the emission of carbon dioxide by Arion lusitanicus auct. non-Mabille