Search results for: Barbara Pacholczyk‐Sienicka

Items from 1 to 7 out of 7 results

article

The influence of experimental parameters on quantitative deuterium measurements for ethyl alcohols of different origin

Grzegorz Ciepielowski, Barbara Pacholczyk‐Sienicka, Kamila Klajman, Piotr Paneth, more

Journal of the Science of Food and Agriculture > 100 > 4 > 1812 - 1815

BACKGROUND Quantitative determination with site‐specific natural isotope fractionation nuclear magnetic resonance (SNIF‐NMR) has been exploited widely in detecting adulteration and for the classification of natural products by their geographical origin. RESULTS We compared isotopic parameters such as deuterium / hydrogen (D/H) site specific ratios and the R parameter for alcoholic beverages, obtained...

article

Comparison of quantitative NMR and IRMS for the authentication of ‘Polish Vodka’

Grzegorz Ciepielowski, Barbara Pacholczyk‐Sienicka, Tomasz Frączek, Kamila Klajman, more

Journal of the Science of Food and Agriculture > 99 > 1 > 263 - 268

BACKGROUND The production of 'Polish Vodka' is restricted by law to the ethyl alcohol of agricultural origins obtained from rye, wheat, barley, oat, triticale and potatoes grown on the territory of the Republic of Poland. The current labeling system should guarantee that the spirit is authentic and of good quality but not all producers are honest. Unfortunately, authentic 'Polish Vodka' is the most...

article

Polyphenolic profiles in lettuce (Lactuca sativa L.) after CaCl₂ treatment and cold storage

Małgorzata Materska, Katarzyna Olszówka, Barbara Chilczuk, Anna Stochmal, more

European Food Research and Technology > 2019 > 245 > 3 > 733-744

Lettuce (Lactuca sativa L.) is a popular vegetable with the health-enhancing properties determined by high levels of antioxidant polyphenols as chlorogenic acids and other derivatives of caffeic acid or flavonoids. In this study, changes in the phenolic compound profiles in the lettuce leaves induced by application of CaCl₂ before harvest and cold storage were studied. For the first time quantitative...

article

Controlling the properties of radiation-synthesized thermoresponsive oligoether methacrylate hydrogels by varying the monomer side-chain length; self-composite network containing crystalline phase

Krzysztof Piechocki, Marcin Kozanecki, Slawomir Kadlubowski, Barbara Pacholczyk-Sienicka, more

Polymer > 2018 > 150 > C > 275-288

A series of thermo-responsive hydrogels have been synthesized by radiation-induced crosslinking polymerization in bulk based on; oligoether methacrylates (OEGMAs) of side chain lengths of 2–19 EG; monomer units. Side chain lengths have been shown to have a pronounced effect on synthesis parameters (monomers of longer side chains are more easily crosslinked, and the inert atmosphere promotes crosslinking...

article

Assessing the correlation between the degree of disc degeneration on the Pfirrmann scale and the metabolites identified in HR-MAS NMR spectroscopy

Maciej Radek, Barbara Pacholczyk-Sienicka, Stefan Jankowski, Łukasz Albrecht, more

Magnetic Resonance Imaging > 2016 > 34 > 4 > 376-380

The objective of this study is to assess the correlation between the degree of degeneration of lumbar discs according to the Pfirrmann classification system and the concentrations of metabolites determined by means of 1H high-resolution magic angle spinning nuclear magnetic resonance (1H HR MAS NMR) spectroscopy.Twenty-six human intervertebral lumbar discs that were operated on due to degenerative...

article

Prediction of survival for patients with advanced colorectal cancer using ¹H High‐resolution magic angle spinning nuclear MR spectroscopy

Barbara Pacholczyk‐Sienicka, Anna Fabiańska, Grażyna Pasz‐Walczak, Radzisław Kordek, more

Journal of Magnetic Resonance Imaging > 41 > 6 > 1669 - 1674

PurposeTo evaluate whether the metabolic profiles of colorectal cancer specimens can be used for prediction of survival. Materials and MethodsThe metabolic profiles of colorectal cancer tissues were determined using the high‐resolution magic angle spinning (HR MAS) nuclear magnetic resonance (NMR) technique (16.4 T). HR MAS analysis was performed for 52 tissues taken from patients classified as survivors...

article

Characterization of metabolites determined by means of ¹ H HR MAS NMR in intervertebral disc degeneration

Barbara Pacholczyk-Sienicka, Maciej Radek, Andrzej Radek, Stefan Jankowski

Magnetic Resonance Materials in Physics, Biology and Medicine > 2015 > 28 > 2 > 173-183

Object The objective of this study is the identification of metabolites by means of ¹ H high resolution magic angle spinning nuclear magnetic resonance ( ¹ H HR MAS NMR) spectroscopy and the evaluation of their applicability in distinguishing between healthy and degenerated disc tissues. Materials and methods Differences between the metabolic...

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Keywords

METABOLIC PROFILE (3)
AUTHENTICATION OF ETHANOLS (2)
ISOTOPE RATIO (2)
2-PROPANOL (1)
ANTIOXIDANT ACTIVITY (1)
CACL2 (1)
COLORECTAL CANCER (1)
DEGENERATIVE DISC DISEASE (1)
DISC DEGENERATION (1)
HR MAS NMR (1)
HR MAS SPECTROSCOPY (1)
IDENTIFICATION OF ETHANOL ORIGIN (1)
IRMS (1)
LETTUCE (1)
METABOLOMICS (1)
MRI SPECTROSCOPY (1)
NMR ANALYSIS (1)
NUCLEAR MAGNETIC RESONANCE (1)
PREDICTION OF SURVIVAL (1)
QUANTITATIVE HR MAS NMR (1)
QUANTITATIVE NUCLEAR MAGNETIC RESONANCE (1)
RADIATION-INDUCED POLYMERIZATION AND CROSSLINKING (1)
SNIF‐NMR (1)
STORAGE (1)
THERMO-RESPONSIVE HYDROGELS (1)
VOLUME PHASE TRANSITION (1)
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Wiley (3)
Elsevier (2)
Springer (2)

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Search results for: Barbara Pacholczyk‐Sienicka

The influence of experimental parameters on quantitative deuterium measurements for ethyl alcohols of different origin

Comparison of quantitative NMR and IRMS for the authentication of ‘Polish Vodka’

Polyphenolic profiles in lettuce (Lactuca sativa L.) after CaCl2 treatment and cold storage

Controlling the properties of radiation-synthesized thermoresponsive oligoether methacrylate hydrogels by varying the monomer side-chain length; self-composite network containing crystalline phase

Assessing the correlation between the degree of disc degeneration on the Pfirrmann scale and the metabolites identified in HR-MAS NMR spectroscopy

Prediction of survival for patients with advanced colorectal cancer using 1H High‐resolution magic angle spinning nuclear MR spectroscopy

Characterization of metabolites determined by means of 1 H HR MAS NMR in intervertebral disc degeneration

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Polyphenolic profiles in lettuce (Lactuca sativa L.) after CaCl₂ treatment and cold storage

Prediction of survival for patients with advanced colorectal cancer using ¹H High‐resolution magic angle spinning nuclear MR spectroscopy

Characterization of metabolites determined by means of ¹ H HR MAS NMR in intervertebral disc degeneration