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Showing 31-43 of 43 results for "103217" within Papers
Iqbal Ahmad et al.
Journal of photochemistry and photobiology. B, Biology, 153, 358-366 (2015-11-08)
A study of the formulation of liposomal preparations of riboflavin (RF) with compositional variations in the content of phosphatidylcholine (PC) and their entrapment efficiency (26-42%) have been conducted. Light transmission characteristics of the liposomal preparations have been determined to evaluate
Leila Farzin et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 184, 109-118 (2017-05-12)
The exploration of novel adsorption properties of conductive polymers based on hybridization with biocompatible nanomaterials receives an increasing interest. In this regard, hydroxyapatite (HA) bioceramic is of critical importance mainly owing to its facile synthesis, high surface area, economic and
Vasilios F Diakonis et al.
European journal of ophthalmology, 22 Suppl 7, S51-S56 (2012-01-24)
To evaluate the time-dependent degradation rate of riboflavin after ultraviolet A (UVA) irradiation. Two solutions of commercially available riboflavin solution (0.1%) were used; one served as control, while the second was irradiated using UVA light at 370 nm wavelength. Four
Maria Marchena et al.
The journal of physical chemistry. B, 115(10), 2424-2435 (2011-02-22)
We report on photophysical studies of lumichrome (Lc) in water at different pHs, and interacting with the human serum albumin (HSA) protein and β-cyclodextrin (β-CD) in neutral aqueous solutions. We used steady-state and picosecond time-resolved emission spectroscopy to investigate the
Jessie Bong et al.
Food chemistry, 267, 355-367 (2018-06-24)
New Zealand manuka (Leptospermum scoparium) and kanuka (Kunzea ericoides) honeys contain a unique array of chemical markers useful for chemical fingerprinting. We investigated the presence of 13 potential marker compounds in nectars of the major honey crop species. We confirmed
Iqbal Ahmad et al.
Journal of photochemistry and photobiology. B, Biology, 157, 113-119 (2016-02-26)
A study of the effect of ionic strength on the photodegradation reactions (photoreduction and photoaddition) of riboflavin (RF) in phosphate buffer (pH7.0) has been carried out using a specific multicomponent spectrometric method. It has been found that the rates of
Iqbal Ahmad et al.
ISRN pharmaceutics, 2013, 958712-958712 (2013-11-01)
The polymerization of 1-3 M 2-hydroxyethyl methacrylate (HEMA) initiated by riboflavin/triethanolamine system has been studied in the pH range 6.0-9.0. An approximate measure of the kinetics of the reaction during the initial stages (~5% HEMA conversion) has been made to avoid
Iqbal Ahmad et al.
Journal of photochemistry and photobiology. B, Biology, 82(1), 21-27 (2005-10-15)
A study of the effect of light intensity and wavelengths on photodegradation reactions of riboflavin (RF) solutions in the presence of phosphate buffer using three UV and visible radiation sources has been made. The rates and magnitude of the two
Zhang-Gui Ding et al.
Magnetic resonance in chemistry : MRC, 47(4), 366-370 (2009-01-24)
An unprecedented new natural product named nocarsin A (1), 5H-4a,6,7a-triazacyclopenta[cd]indene-5,7(6H)-dione (1), together with seven known compounds lumichrome (2), cyclo (L-Leu-L-Tyr) (3), cyclo (L-Ala-L-Ile) (4), cyclo (L-Ala-L-Leu) (5), cyclo (L-Val-L-Ala) (6), 5-methyluracil (7) and uracil (8), was isolated from Nocardia alba
Iqbal Ahmad et al.
International journal of pharmaceutics, 390(2), 174-182 (2010-02-09)
The present investigation is based on a study of the effect of buffer and non-buffer divalent anions (phosphate, sulphate, tartrate, succinate, malonate) on the kinetics, product distribution and photodegradation pathways of riboflavin (RF) at pH 6.0-8.0. RF solutions (5x10(-5)M) were
Amit Tyagi et al.
Photochemistry and photobiology, 87(3), 524-533 (2010-11-26)
The spectroscopic behavior of lumichrome (7,8-dimethyl-alloxazine, LC) in aqueous solutions in a pH range from -1.08 to 14.6 is studied. Absorption spectra, fluorescence quantum distributions, quantum yields, and lifetimes are determined. The ionization stage of ground-state LC changes with rising
Tamutenda Chidawanyika et al.
mBio, 11(4) (2020-08-14)
Extracellular hydrogen peroxide can induce oxidative stress, which can cause cell death if unresolved. However, the cellular mediators of H2O2-induced cell death are unknown. We determined that H2O2-induced cytotoxicity is an iron-dependent process in HAP1 cells and conducted a CRISPR/Cas9-based
Tomoe Kageyama et al.
Nucleic acids symposium series (2004), (52)(52), 119-120 (2008-09-09)
By using lumichrome (Lch) as a masking ligand, we successfully control the binding selectivity of 2-amino-5,6,7-trimethyl-1,8-naphthyridine (ATMND) when binding to nucleobases in AP site-containing DNA duplexes (5'-TCT GCG TCC AGX GCA ACG CAC AC-3'/3'-AGA CGC AGG TCN CGT TGC GTG
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