Search Results - "Komsta, Łukasz"

Black Tea Samples Origin Discrimination Using Analytical Investigations of Secondary Metabolites, Antiradical Scavenging Activity and Chemometric Approach by Koch, Wojciech, Kukula-Koch, Wirginia, Komsta, Łukasz

“…A comprehensive study on the composition and antioxidant properties of black tea samples with a chemometric approach was performed via LC-ESI-Q-TOF-MS, DPPH…”
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Green Tea Quality Evaluation Based on Its Catechins and Metals Composition in Combination with Chemometric Analysis by Koch, Wojciech, Kukula-Koch, Wirginia, Komsta, Łukasz, Marzec, Zbigniew, Szwerc, Wojciech, Głowniak, Kazimierz

“…Green tea infusions are one of the most popular beverages consumed across the world, especially is Asian countries. Green tea quality is primarily based on…”
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Directional median analysis by Komsta, Łukasz

“…The Directional Median Analysis is a new proposal of robust data exploration. It can be treated as a multivariate extension of the idea similar to Theil–Sen…”
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Novel Hyperspectral Analysis of Thin-Layer Chromatographic Plates-An Application to Fingerprinting of 70 Polish Grasses by Wróbel-Szkolak, Joanna, Cwener, Anna, Komsta, Łukasz

“…The advantages of hyperspectral imaging in videodensitometry are presented and discussed with the example of extracts from 70 Polish grasses. An inexpensive…”
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Being uncertain in thin layer chromatography—Some thoughts about latent details in the retention estimation by Komsta, Lukasz

“…This paper deals with some important (but often neglected) details about the uncertainty of retention measurement in thin layer chromatography, the propagation…”
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Being Uncertain in Chromatographic Calibration—Some Unobvious Details in Experimental Design by Komsta, Łukasz, Wicha-Komsta, Katarzyna, Kocki, Tomasz

“…This is an introductory tutorial and review about the uncertainty problem in chromatographic calibration. It emphasizes some unobvious, but important details…”
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Effect of ACEA 1021 on Neurotoxicity Induced by Dexamethasone — Initial Behavioral Study by Krasuska-Grzegorczyk, Beata, Komsta, Łukasz, Danilczuk, Zofia

“…Considerable evidence suggests that glucocorticoids (GCs) play an important role in neurodegeneration. Chronic elevated levels of GCs can result in neuronal…”
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Multivariate look at the TLC retention: A concise review by Komsta, Lukasz

“…The multivariate analysis of retention data in thin-layer chromatography (TLC) allows the chromatographer to visualize the multidimensional retention data and…”
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Multivariate Chemometric Comparison of Forced Degradation and Electrochemical Oxidation LC-MS Profiles of Maraviroc by Wroński, Michał, Trawiński, Jakub, Komsta, Łukasz, Skibiński, Robert

“…In this study, nine forced degradation products of maraviroc were found using chemometric analysis. This antiretroviral drug was subjected to photolytic,…”
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Novel computational approaches to retention modeling in dual hydrophilic interactions/reversed phase chromatography by Obradović, Darija, Komsta, Łukasz, Agbaba, Danica

“…•Mathematical description of mixed-mode retention with the use of Box-Cox transformation.•Introduction of novel mixed-mode retention parameters.•Evaluation of…”
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The influence of light quality on the production of bioactive metabolites – verbascoside, isoverbascoside and phenolic acids and the content of photosynthetic pigments in biomass of Verbena officinalis L. cultured in vitro by Kubica, Paweł, Szopa, Agnieszka, Prokopiuk, Barbara, Komsta, Łukasz, Pawłowska, Bożena, Ekiert, Halina

“…In vitro callus cultures of Verbena officinalis L. were maintained on solid Murashige and Skoog medium, enriched with 1 mg dm−3 BA and 1 mg dm−3 IBA under LED…”
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Comparison of HPLC, HPTLC, and In Silico Lipophilicity Parameters Determined for 5-Heterocyclic 2-(2,4-Dihydroxyphenyl)-1,3,4-thiadiazoles by Paw, Beata, Śliwa, Rafał, Komsta, Łukasz, Senczyna, Bogusław, Karpińska, Monika, Matysiak, Joanna

“…The 5-heterocyclic 2-(2,4-dihydroxyphenyl)-1,3,4-thiadiazoles were obtained as potential biologically active compounds. Lipophilicity is one of the most…”
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A comparative study on several algorithms for denoising of thin layer densitograms by KOMSTA, Lukasz

“…This paper compares classical filtering techniques (Savitzky–Golay, Adaptive Degree Polynomial Filter, Fourier denoising, Butterworth and Chebyshev IIR…”
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Investigation of antiradical activity of plant material by thin-layer chromatography with image processing by Olech, Marta, Komsta, Łukasz, Nowak, Renata, Cieśla, Łukasz, Waksmundzka-Hajnos, Monika

“…► A novel method for free-radical scavenging activity analysis is proposed. ► The method combines TLC separation with the use of image processing program. ►…”
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HPLC Fingerprint Analysis with the Antioxidant and Cytotoxic Activities of Selected Lichens Combined with the Chemometric Calculations by Hawrył, Anna, Hawrył, Mirosław, Hajnos-Stolarz, Agnieszka, Abramek, Jagoda, Bogucka-Kocka, Anna, Komsta, Łukasz

“…The aim of this study was to evaluate the ability of multivariate techniques to predict antioxidant and cytotoxic activity of the selected lichens from the…”
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Profiling the annual change of the neurobiological and antioxidant effects of five Origanum species in correlation with their phytochemical composition by Gök, Hasya Nazli, Luca, Simon Vlad, Ay, Saadet Tugrul, Komsta, Łukasz, Salmas, Ramin Ekhteiari, Orhan, Ilkay Erdogan, Skalicka-Woźniak, Krystyna

“…•Annual phytochemical profile of 5 Origanum species was established.•Cholinesterase inhibition and antioxidant effects of 60 extracts were tested.•The links…”
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Nonnegative principal component analysis in thin layer fingerprint screening: A case of Gentiana extracts from in vitro cultures by Gadowski, Sebastian, Tomiczak, Karolina, Komsta, Łukasz

“…Twenty-one species of Gentiana L. were successfully grown in vitro in the same conditions and 72 samples of various cultures of these species (root, shoots,…”
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Bioaccumulation of selected macro- and microelements and their impact on antioxidant properties and accumulation of glucosinolates and phenolic acids in in vitro cultures of Nasturtium officinale (watercress) microshoots by Klimek-Szczykutowicz, Marta, Szopa, Agnieszka, Blicharska, Eliza, Dziurka, Michał, Komsta, Łukasz, Ekiert, Halina

“…•Watercress microshoots are able to effectively accumulate macro- and microelements.•Bioaccumulation of elements influence the production of glucosinolates and…”
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Cytotoxic and Proapoptotic Activity of Sanguinarine, Berberine, and Extracts of Chelidonium majus L. and Berberis thunbergii DC. toward Hematopoietic Cancer Cell Lines by Och, Anna, Zalewski, Daniel, Komsta, Łukasz, Kołodziej, Przemysław, Kocki, Janusz, Bogucka-Kocka, Anna

“…Isoquinoline alkaloids belong to the toxic secondary metabolites occurring in plants of many families. The high biological activity makes these compounds…”
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Quantitative evaluation of dissolution profiles: From simple approaches to advanced chemometrics by Komsta, Łukasz, Wicha-Komsta, Katarzyna

“…Many forms of drugs are designed to undergo dissolution upon oral administration. The kinetics and efficiency of this process are critical parameters to be…”
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