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Influence of apple purée preparation and storage on polyphenol contents and antioxidant activity
Comparative study of polyphenolic content and antiradical activity of cloudy and clear apple juices
Clear and cloudy apple juices from Idared and Champion varieties were studied for their radical-scavenging effects. The polyphenolic content and composition of the juices before and after thiolysis…
Solid state NMR study of dietary fiber powders from aronia, bilberry, black currant and apple.
Antioxidant activity of extracts and flavonoids from Bidens tripartita.
- M. Wolniak, M. Tomczykowa, M. Tomczyk, J. Gudej, I. Wawer
- Chemistry, MedicineActa poloniae pharmaceutica
- 1 September 2007
Bur-marigold extracts are a potential source of natural antioxidants that may be used in pharmaceutical or food industry and different kinetics suggested the presence of polymerized and/or less active antioxidants with different scavenging mechanisms for particular polyphenolic compounds.
Structural studies of methyl brevifolincarboxylate in solid state by means of NMR spectroscopy and DFT calculations
Chromane helicity rule--scope and challenges based on an ECD study of various trolox derivatives.
The results clearly indicated that to avoid the possibility of erroneous conclusions the chromane helicity rule should be used with great caution, likely related to the conformational flexibility of tested compounds by which conformers of different helicities can be produced.
Solid‐state NMR studies and DFT calculations of flavonoids: baicalein, baicalin and wogonoside
Three flavonoids of pharmaceutical importance—baicalein, baicalin, and wogonoside—were isolated from a Chinese medicinal plant Scutellaria baicalensis Georgi and studied by 13C NMR in solution and solid state, enabling the selection of the most reliable geometry in the solid phase.
(13)C, (15)N CPMAS NMR and GIAO DFT calculations of stereoisomeric oxindole alkaloids from Cat's Claw (Uncaria tomentosa).
(13)C CPMAS NMR and DFT calculations of anthocyanidins.
Identification and analysis of drugs in the solid state by 13C CPMAS NMR: suxamethonium chloride and hydrocortisonum (Corhydron).
Cross-polarization (CP) magic angle spinning (MAS) 13C NMR spectroscopy has become a routine tool in pharmacy, employed to identify and characterize drugs in the solid phase. 13C CPMAS NMR spectra…