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1

Biochemiczne aspekty procesu starzenia się nasion

100%
Luczynska J.
Wiadomości Botaniczne
|
1976
|
tom 20
|
nr 3
2

The influence of weight and length on the mercury content in the muscle tissue of fish from four lakes in the Olsztyn Lake District (Poland)

100%
Luczynska J.
Archives of Polish Fisheries
|
2005
|
tom 13
|
nr 1
The total mercury content was determined in the muscle of northern pike, perch, and roach caught in four lakes (Łańskie, Pluszne, Dłużek, Maróz) in the Olsztyn Lake District (northeastern Poland) from October 1999 to October 2000. The total mercury was analyzed with flameless cold vapor atomic absorption spectrometry (CV AAS). The total mercury content in the muscle of pike ranged from 0.076 mg kg⁻¹ (Łańskie) to 0.902 mg kg⁻¹ (Pluszne), in perch from 0.104 mg kg⁻¹ (Pluszne) to 1.277 mg kg⁻¹ (Dłużek), and in roach from 0.074 mg kg⁻¹ (Maróz) to 0.278 mg kg⁻¹ (Maróz). In most cases, the strongest positive correlation (p < 0.001) was found between the Hg concentration in the muscle tissue of the fish and total body weight (0.825 < r < 0.967) or total body length (0.781 < r < 0.950). The exception was the roach from Lake Maróz, where the correlation coefficients between mercury content in the muscle of these fish and their body weight and total length were r = 0.794 and r = 0.788, respectively (p < 0.01). Similarly, with pike from Lake Maróz it was found that the correlation coefficient between the mercury concentration in the muscle of these fish and their total length was r = 0.781 (p < 0.01).
3
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Content available

Mercury content in organs of commercial fish (Poland) - a short report

63%
Luczynska J., Krupowski M.
Polish Journal of Food and Nutrition Sciences
|
2009
|
tom 59
|
nr 4
The concentration of mercury in selected organs (muscles, liver and gills) of five fish species was measured by flameless cold vapor atomic absorption spectrometry (CV AAS). The fish species examined: freshwater (pike, Esox lucius (L.), roach, Rutilus rutilus (L.) and bream, Abramis brama (L.)) and marine (mackerel, Scomber scombrus and flounder, Platichthys flesus), were bought from supermarkets of Olsztyn (north-eastern Poland) over the period from November to December 2006. Differences in the total mercury content were found both between species and organs. The concentration of mercury turned out to be higher in muscles of freshwater fish than in other organs (p≤0.05). Muscles of flounder had also more mercury than gills and liver, but differences were statistically significant only between muscles and gills (p≤0.05). The content of mercury in the liver of mackerel was higher than in gills (p≤0.05) and muscles, although did not differ statistically (p>0.05). The higher levels of mercury (0.226 mg/kg and 0.084 mg/kg, respectively) were determined in muscles (p≤0.05) and liver (p≤0.05) of pike as compared to the other fish studied (with the exception of mackerel), because the concentration of Hg in liver of these fish was not statistically significant (p>0.05). A significantly higher mercury content (0.034 mg/kg) was recorded in gills of mackerel than in those of bream (p≤0.05). The muscle tissue of freshwater fish contained a higher concentration of mercury (0.135 mg/kg) than that of marine fish (0.052 mg/kg), (p≤0.05). In turn, the content of mercury (0.033 mg/kg) in gills of marine fish was higher than in the freshwater fish (0.019 mg/kg), (p≤0.05), whereas the content of mercury in liver of freshwater fish was close to that of the marine fish (0.051 mg/kg and 0.053 mg/kg, respectively) (p>0.05).
4

Sery i produkty seropodobne jako źródło sprzężonego kwasu linolowego (CLA) oraz izomerów trans w naszej diecie

63%
Paszczyk B., Luczynska J.
Bromatologia i Chemia Toksykologiczna
|
2017
|
tom 50
|
nr 1
5

Changes in the content of CLA and other trans isomers in the Kormoran cheese during six weeks of ripening

63%
Paszczyk B., Luczynska J.
Polish Journal of Natural Sciences
|
2018
|
tom 33
|
nr 4
The aim of this study was to evaluate the effect of first six weeks of ripening on the content of cis9,trans11 CLA and trans isomers of C18:1 and C18:2 acids in Kormoran cheese. The experimental material included rennet, ripening Swiss – type Kormoran cheeses made of cow’s milk. The cheeses were obtained from a dairy plant located in the Warmia and Mazury voivodeship. Analyses were conducted for normalized milk prepared for cheese production, freshly made cheeses and cheeses after 1, 2, 4 and 6 weeks of ripening. Cheeses were ripeing at the manufacturing plant. The study showed that the time of ripening had a significant impact on the content of conjugated linoleic acid cis9,trans11 CLA as well as on the content of trans C18:2 isomers in cheeses. In the analyzed cheeses, the content of CLA was significantly higher (P < 0.05) after 6 weeks of ripening than the content of those isomers in fresh cheeses and those analyzed after 1, 2 and 4 weeks of ripening
6

Ocena profilu kwasów tłuszczowych oraz izomerów trans w czekoladach mlecznych i wyrobach czekoladowych

63%
Paszczyk B., Luczynska J.
Bromatologia i Chemia Toksykologiczna
|
2016
|
tom 49
|
nr 2
7

Skład kwasów tłuszczowych i izomerów trans w margarynach twardych i miękkich

63%
Paszczyk B., Luczynska J.
Bromatologia i Chemia Toksykologiczna
|
2013
|
tom 46
|
nr 2
8

The relationship between the content of lead and cadmium in muscle tissue and the size of fish from lakes in the Olsztyn Lake District of northeast Poland

63%
Luczynska J., Brucka-Jastrzebska E.
Archives of Polish Fisheries
|
2005
|
tom 13
|
nr 2
Concentrations of lead and cadmium were measured in the muscle of four fish species: pike, Esox lucius L., Eurasian perch, Perca fluviatilis L., roach, Rutilus rutilus (L.), and bream, Abramis brama (L.) collected from four lakes in the Olsztyn Lake District of northeast Poland. The fish were caught in the 1999-2000 period. Heavy metals contents were determined using the flameless atomic absorption spectrophotometry method (GF AAS). The mean lead content in the muscle of pike, perch, roach, and bream was 0.084, 0.098, 0.094, and 0.083 mg kg-1, respectively. Positive correlation coefficients (P< 0.001) were noted between Pb concentration and the body weight and total length of roach and perch (0.481 < r < 0.676, respectively). Negative correlation factors between Pb content and the body weight and length of pike (r = - 0.378, P < 0.01 and r = - 0.549, P < 0.001) and bream (r = - 0.557 and r = - 0.519, P < 0.001, respectively) were noted. The mean content of cadmium in the muscle of pike, perch, roach, and bream ranged from 0.0023 to 0.0025 mg kg-1. There were positive correlations between the levels of Cd in the muscle of roach and perch and body weight (r = 0.401, P < 0.01 and r = 0.323, P < 0.05, respectively) and total length (r = 0.436, P < 0.01 and r = 0.354, P < 0.05, respectively). The correlation coefficients between body weight and total length and the content of cadmium in pike and bream were – 0.228< r < 0.075.
9

Wybrane mikro- i makroelementy w preparatach mlecznych do początkowego żywienia niemowląt

63%
Tonska E., Luczynska J.
Przegląd Mleczarski
|
2016
|
nr 05
10

Ocena zawartości kwasów tłuszczowych i izomerów trans w masłach, margarynach miękkich i tłuszczach mieszanych

63%
Paszczyk B., Luczynska J.
Bromatologia i Chemia Toksykologiczna
|
2019
|
tom 52
|
nr 3
11
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Content available

Przemiany fizjologiczno-biochemiczne w nasionach podczas spoczynku i przechowywania

63%
Grzesiuk S., Luczynska J.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
1971
|
tom 113
12

The effect of fish size on the content of zinc, iron, copper, and manganese in the muscles of perch [Perca fluviatilis L.] and pike [Esox lucius L.]

63%
Luczynska J., Tonska E.
Archives of Polish Fisheries
|
2006
|
tom 14
|
nr 1
The correlation coefficients between fish size (body weight and total length) and the content of zinc, iron, copper, and manganese in muscles of perch, Perea fluviatilis L., and pike, Esox lucius L., were determined. The fish were caught in four lakes (Łańskie, Pluszne, Dłużek, Maróz) located in the Olsztyn Lake District (northeastern Poland) during 1999 - 2000. With the exception of copper in the perch from Lake Pluszne, in all cases the concentrations of zinc, copper, and manganese in muscle tissue decreased with perch body weight and total length. The content of iron in the muscles of perch from Lake Łańskie was correlated negatively with the size of these fish, but in other cases the levels of iron increased or remained constant. The zinc concentration in muscles of pike was correlated positively with the body weight and total length of these fish. A negative correlation between fish size and iron and manganese content was noted at all sites, except with regard to iron in pike from Lake Pluszne. There was a positive correlation between weight or length and copper concentration in pike from lakes Łańskie and Maróz. However, there was a negative correlation between size and copper content in the muscles of pike from lakes Pluszne and Dłużek. The relationship between the contents of selected metals was calculated.
13

Determination of heavy metals in the muscles of some fish species from lakes of the North-Eastern Poland

63%
Luczynska J., Brucka-Jastrzebska E.
Polish Journal of Food and Nutrition Sciences
|
2006
|
tom 15/56
|
nr 2
Lead, cadmium and total mercury concentrations have been determined in the muscle of six fish species: roach (Rutilus rutilus L.), bream (Abramis brama L.), perch (Perca fluviatilis L.), pike (Esox lucius L.), vendace (Coregonus albula L.) and whitefish (Coregonus lavaretus L.) from selected lakes in North-Eastern Poland (Łańskie, Pluszne, Dłużek and Maróz), caught over the period October 1999 to October 2000. Levels of Pb and Cd have not differed in fish of different feeding type, with the exception of cadmium in fish from Lake Łańskie (p≤0.01). Generally, the higher concentrations of total mercury were found in predatory than non-predatory fish (p≤0.01). Only some specimens (perch of the Dłużek and Maróz lakes and roach of the Dłużek Lake) had Pb levels exceeding 0.2 mg/kg. The Hg concentration in muscle of some perch (except from Lake Łańskie) exceeded the Polish safety limit of 0.5 mg/kg.
14

Conjugated linoleic acid (CLA) and trans isomers of C18:1 and C18:2 acids in mould cheeses

51%
Paszczyk B., Borejszo Z., Luczynska J.
Polish Journal of Natural Sciences
|
2012
|
tom 27
|
nr 1
This study was aimed at determining the content of cis9transll C18:2 (CLA) acid and of trans isomers of C18:l and C18:2 acids in fat of mould cheeses originating from various producers (from different countries) available on the market in the city of Olsztyn. Analyses were carried out for 20 types of mould cheeses originating from different EU Member States, i.e. Poland (8 types) as well as Denmark, Germany, France and Italy (3 types from each country). The content of cis9transll C18:2 acid in fat of the analyzed mould cheese originating from Polish producers ranged from 0.25 to 0.64% and did not differ significantly (p>0.05) from that noted in fat extracted from cheeses originating from the other EU Member States. The content of this acid in cheeses from Denmark ranged from 0.50 to 0.54%, in those from Germany - from 0.44 to 0.81%, in those from Italy - from 0.48 to 0.51%, and in those from France - from 0.41 to 0.54% of the total fatty acid composition. Contents of trans isomers of C18:l acid in cheeses from Poland accounted for 1.94 to 2.64% of the total fatty acid composition. A similar content of those isomers was reported in the French cheeses. In turn, in the cheeses originating from Denmark, Germany and Italy the total content of C18:l trans isomers was found to be significantly (p≤0.05) higher. Trans isomers of C18:2 acid analyzed in the Polish cheeses constituted from 0.57 to 0.73%. In the cheeses from Denmark and France they were at a similar level, whereas in the cheeses from Germany and Italy the total content of those isomers was significantly (p ≤ 0.05) higher than in the Polish cheeses. The study demonstrated that the investigated mould cheeses originating from various producers and from various countries, and available on the Olsztyn market, were characterized by similar contents of CLA and diversified contents of trans isomers of C18:1 and C18:2 acids.
15
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Content available

Fatty acid profile of muscles of freshwater fish from Olsztyn markets

51%
Luczynska J., Paszczyk B., Borejszo Z., Tarkowski L.
Polish Journal of Food and Nutrition Sciences
|
2012
|
tom 62
|
nr 1
The aim of the present study was to determine the profi le of fatty acids in muscle lipids of freshwater fi sh: carp (Cyprinus carpio L.), rainbow trout (Oncorhynchus mykiss Walb.), bream (Abramis brama L.) and tench (Tinca tinca L.) from markets of Olsztyn (north-eastern Poland). Separation and identifi cation of fatty acids were made using gas chromatography. The content of some fatty acids varied among species. Generally, palmitic acid (15.6%-19.5%) was the most abundant saturated fatty acid (SFA). The main monounsaturated fatty acid (MUFA) was oleic acid (20.7%-42.7%). Linoleic (4.6%-8.0%), arachidonic (AA) (0.8%-6.6%), docosahexaenoic (DHA) (1.7%-15.9%) and eicosapentaenoic (EPA) (1.2%-8.8%) acids were the predominant polyunsaturated fatty acids (PUFA). There were no signifi cant differences (p>0.05) in the content of SFA (24.3%-28.7%) among the fi sh species. The content of MUFA in muscle lipids of carp (55.0%) was signifi cantly higher (p≤0.01) than in the lipids of the other fi sh examined (35.8%-38.3%). Bream and rainbow trout (26.6% and 27.7%, respectively) contained signifi cant more n-3 PUFA than carp (4.7%) and tench (20.5%) (p≤0.01). Total n-6 PUFA ranged between 8.4% (rainbow trout) and 12.9% (tench). Signifi cant differences in n-6 PUFA content were only observed in the case of these fi sh (p≤0.01). The differences in the n-3/n-6 ratio (rainbow trout (3.3) > bream (2.6) > tench (1.6) > carp (0.4)) were statistically signifi cant (p≤0.01).
16

Fatty acid profile and trans fatty acids content in cereals and cereal bars from Polish market

51%
Paszczyk B., Luczynska J., Tonska E.
Polish Journal of Natural Sciences
|
2017
|
tom 32
|
nr 4
This study was aimed at determining lipid content, fatty acid composition and trans isomers content in fat extracted from cereals and cereal bars. Cereals and cereal bars were analyzed by gas chromatography. Analyses showed that they were characterized by a diversified content of fat and composition of particular groups of fatty acids (saturated SFA, monounsaturated MUFA and polyunsaturated PUFA). Only oat flakes turned out to be a good source of PUFA (38.83% of total fatty acids). The remaining products contained more SFA (mean: 45.12% and 47.73% in cereals and 63.31% in cereal bars) than PUFA (mean: 12.24% and 16.73% in cereals and 7.83% in cereal bars). Lipid of all examined products contained trans isomers of C18:1 and C18:2 acids. In lipids of cereals, the total content of these isomers did not exceed 0.5% of the total fatty acids. A higher content of these isomers was found in cereal bars (0.45–3.15%).
17

Fatty acid profiles in marine and freshwater fish from fish markets in northeastern Poland

51%
Luczynska J., Paszczyk B., Luczynski M. J.
Archives of Polish Fisheries
|
2014
|
tom 22
|
nr 3
18

Wybrane metale w tkance miesniowej ryb z Jeziora Lanskiego

51%
Luczynska J., Jaworski J., Markiewicz K.
Komunikaty Rybackie
|
2000
|
nr 3
22-25
19

Interspecific differences in the contents of macro- and microelements in the muscle of six fish species from lakes of the Olsztyn Lake District (north-east of Poland)

51%
Luczynska J., Markiewicz K., Jaworski J.
Polish Journal of Food and Nutrition Sciences
|
2006
|
tom 15/56
|
nr 1
Muscles of roach (Rutilus rutilus L.), bream (Abramis brama L.), perch (Perca fluviatilis L.), pike (Esox lucius L.), vendace (Coregonus albula L.) and whitefish (Coregonus lavaretus L.) from lakes of the Olsztyn Lake District were examined for the content of macroelements (Mg, Ca, Na, K and P) and microelements (Fe, Zn, Cu and Mn). The fish were caught over the period from October 1999 to October 2000. There were significant interspecific differences in the contents of dietary elements. The highest magnesium (26.7 mg/100 g), calcium (36.5 mg/100 g) and phosphorus (230.6 mg/100 g) concentrations were found in the muscle of roach. A significantly higher content of Mg was observed in the muscle of pike (27.6 mg/100 g) and perch (26.5 mg/100 g). The concentration of Na (47.0 mg/100 g) in muscle tissue of perch was higher than in that of the other fish species. The significantly higher contents of Fe (2.81 mg/kg), Cu (0.315 mg/kg) and Mn (0.167 mg/kg) were found in muscle of vendace. In the muscle tissue of pike, the concentrations of zinc (8.41 mg/kg) were higher compared with other species.
20

Essential mineral components in the muscles of six freshwater fish from the Mazurian Great Lakes (northeastern Poland)

51%
Luczynska J., Tonska E., Luczynski M. J.
Archives of Polish Fisheries
|
2009
|
tom 17
|
nr 4
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