Search Results - "Wawrzeñczyk, Czesław"

β-Thujone and Its Derivatives Modify the Probing Behavior of the Peach Potato Aphid by Wróblewska-Kurdyk, Anna, Gniłka, Radosław, Dancewicz, Katarzyna, Grudniewska, Aleksandra, Wawrzeńczyk, Czesław, Gabryś, Beata

“…Thujone is a natural biologically active monoterpene ketone component of essential oils of numerous plants. The aim of the study was to evaluate the effect of…”
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Lactones 20 : Biohydroxylation of saturated bicyclic γ-lactones with the substituted cyclohexane system by Gładkowski, Witold, Grabarczyk, Małgorzata, Konopka, Monika, Wawrzeñczyk, Czesław

“…Three bicyclic saturated γ-lactones with various numbers of methyl groups at the cyclohexane ring were transformed into the corresponding hydroxylactones. The…”
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Repellent and Antifeedant Activities of Citral-Derived Lactones against the Peach Potato Aphid by Dancewicz, Katarzyna, Szumny, Antoni, Wawrzeńczyk, Czesław, Gabryś, Beata

“…Citral is well known for its antimicrobial, antifungal, and insecticidal activities. Natural sesquiterpene α-methylenelactones also exhibit a broad spectrum of…”
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Chalcone-Derived Lactones: Synthesis, Whole-Cell Biotransformation, and Evaluation of Their Antibacterial and Antifungal Activity by Gładkowski, Witold, Siepka, Monika, Żarowska, Barbara, Białońska, Agata, Gawdzik, Barbara, Urbaniak, Mariusz, Wawrzeńczyk, Czesław

“…Four compounds with lactone moiety were synthesized from chalcone in three- or four-step synthesis. γ-Bromo-δ-lactone was the only product of…”
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Piperitone-Derived Saturated Lactones: Synthesis and Aphid Behavior-Modifying Activity by Grudniewska, Aleksandra, Dancewicz, Katarzyna, Białońska, Agata, Wawrzeńczyk, Czesław, Gabryś, Beata

“…Two racemic and two enantiomeric pairs of new saturated lactones with the p-menthane system were obtained. The lactones were synthesized from racemic and…”
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Structure-related antifeedant activity of halolactones with a p-menthane system against the lesser mealworm, Alphitobius diaperinus Panzer by Szczepanik, Maryla, Grudniewska, Aleksandra, Zawitowska, Beata, Wawrzeńczyk, Czesław

“…BACKGROUND Feeding deterrent activity of synthetic halogen lactones against larvae and adults of the lesser mealworm, Alphitobius diaperinus Panzer, in…”
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Microbial Asymmetric Functionalization of β-Cyclocitral-Derived Tetramethyl-Substituted γ-Lactone by Mazur, Marcelina, Gładkowski, Witold, Pawlak, Aleksandra, Obmińska-Mrukowicz, Bożena, Maciejewska, Gabriela, Wawrzeńczyk, Czesław

“…Searching for the new anticancer compounds we prepared three new β-cyclocitral-derived hydroxyl-γ-lactones by microbial hydroxylation of…”
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A new liquid chromatography method with charge aerosol detector (CAD) for the determination of phospholipid classes. Application to milk phospholipids by Kiełbowicz, Grzegorz, Micek, Piotr, Wawrzeńczyk, Czesław

“…A new rapid method for the quantitative analysis of five classes of phospholipids (PLs) (phosphatidylcholine—PC, lysophosphatidylcholine—LPC,…”
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Chemo-Enzymatic Synthesis of Optically Active γ- and δ-Decalactones and Their Effect on Aphid Probing, Feeding and Settling Behavior by Boratyński, Filip, Dancewicz, Katarzyna, Paprocka, Marlena, Gabryś, Beata, Wawrzeńczyk, Czesław

“…The enantiomerically enriched γ- and δ-decalactones (4a and 4b) were prepared from corresponding racemic primary-secondary 1,4- and 1,5-diols (1a and 1b), as…”
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Chemical composition, antimicromicrobial activity and insecticidal activity against the lesser mealworm Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae) of Origanum vulgare L. ssp. hirtum (Link) and Artemisia dracunculus L. essential oils by Szczepanik, Maryla, Walczak, Maciej, Zawitowska, Beata, Michalska‐Sionkowska, Marta, Szumny, Antoni, Wawrzeńczyk, Czesław, Brzezinska, Maria Swiontek

“…BACKGROUND Essential oils (EOs) from Artemisia dracunculus L. and Origanum vulgare L. ssp. hirtum were obtained and the qualitative and quantitative chemical…”
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Microbial Hydrolysis of Racemic β-Aryl-γ-ethylidene-γ-lactones and Antifeedant Activity of the Products against Alphitobius diaperinus Panzer by Skrobiszewski, Andrzej, Gładkowski, Witold, Mazur, Marcelina, Szczepanik, Maryla, Maciejewska, Gabriela, Wawrzeńczyk, Czesław

“…Hydrolysis of (±)-β-aryl-γ-ethylidene-γ-lactones by fungal strain AM370 afforded (−)-( )-γ-ethylidene-γ-lactones ⁻ and (+)-( )-γ-ketoacids ⁻ . Enantiomeric…”
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Synthesis and Antimicrobial Activity of Methoxy- Substituted γ-Oxa-ε-lactones Derived from Flavanones by Gładkowski, Witold, Siepka, Monika, Janeczko, Tomasz, Kostrzewa-Susłow, Edyta, Popłoński, Jarosław, Mazur, Marcelina, Żarowska, Barbara, Łaba, Wojciech, Maciejewska, Gabriela, Wawrzeńczyk, Czesław

“…Six γ-oxa-ε-lactones, 4-phenyl-3,4-dihydro-2 -1,5-benzodioxepin-2-one ( ) and its five derivatives with methoxy groups in different positions of A and B rings…”
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An efficient method for enzymatic purification of cis-9,trans-11 isomer of conjugated linoleic acid by Niezgoda, Natalia, Wawrzeńczyk, Czesław

“…•A simple method for purification of c9,t11 CLA.•An esterification of CLA isomers catalyzed by Candida cylindracea lipase.•The effect of various parameters on…”
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Phosphatidylcholine with conjugated linoleic acid in fabrication of novel lipid nanocarriers by Pucek, Agata, Niezgoda, Natalia, Kulbacka, Julita, Wawrzeńczyk, Czesław, Wilk, Kazimiera A.

“…[Display omitted] •Newly synthesized (CLA)PC efficiently stabilized solid lipid particles and nanostructured lipid carriers.•Fairly monodisperse SLN s and NLCs…”
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Lactones. 21. † Synthesis and Odoriferous Properties of Lactones with the p-Menthane System by Dams, Iwona, Białońska, Agata, Ciunik, Zbigniew, Wawrzeńczyk, Czesław

“…Starting from (R)-(+)- and (S)-(−)-pulegone, enantiomeric pairs of esters and lactones with the p-menthane system were obtained. The Claisen rearrangement of…”
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Methoxy-Substituted γ-Oxa-ε-Lactones Derived from Flavanones-Comparison of Their Anti-Tumor Activity In Vitro by Pawlak, Aleksandra, Henklewska, Marta, Hernández-Suárez, Beatriz, Siepka, Monika, Gładkowski, Witold, Wawrzeńczyk, Czesław, Motykiewicz-Pers, Karolina, Obmińska-Mrukowicz, Bożena

“…The study investigated four flavanone-derived γ-oxa-ε-lactones: a parent unsubstituted compound and its three derivatives with the methoxy group in positions…”
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Lactones. 9. † Synthesis of Terpenoid LactonesActive Insect Antifeedants by Paruch, Edyta, Ciunik, Zbigniew, Nawrot, Jan, Wawrzeńczyk, Czesław

“…Starting from (+)- and (−)-perillyl alcohols, via Claisen rearrangement and iodolactonization, four enantiomeric pairs of γ-lactones were obtained. The…”
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Lactones 41. Synthesis and microbial hydroxylation of unsaturated terpenoid lactones with p-menthane ring systems by Grudniewska, Aleksandra, Wawrzeńczyk, Czesław

“…Racemic [(±)-4-isopropyl-1-methyl-7-oxa-cis-bicyclo[4.3.0]non-4-en-8-one] and optically active δ,ε-unsaturated lactones…”
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Fatty acid composition of egg yolk phospholipid fractions following feed supplementation of Lohmann Brown hens with humic-fat preparations by Gładkowski, Witold, Kiełbowicz, Grzegorz, Chojnacka, Anna, Gil, Marta, Trziszka, Tadeusz, Dobrzański, Zbigniew, Wawrzeńczyk, Czesław

“…► Supplementation of feeds with humic-fat preparations results in the enrichment of eggs with n-3 PUFA. ► The n-6/n-3 ratio can be decreased to the range of…”
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Regio- and enantioselective microbial hydroxylation and evaluation of cytotoxic activity of β-cyclocitral-derived halolactones by Mazur, Marcelina, Gładkowski, Witold, Srček, Višnja Gaurina, Radošević, Kristina, Maciejewska, Gabriela, Wawrzeńczyk, Czesław

“…Three β-cyclocitral-derived halolactones, which exhibit antifeedant activity towards storage product pests, were subjected to microbial transformation…”
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