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N Shaemningwar Moyon et al.
The journal of physical chemistry. A, 115(12), 2456-2464 (2011-03-11)
Fluorescence solvatochromism of lumichrome (LC) was studied by steady-state and time-resolved fluorescence spectroscopy. The excited-state properties of LC do not show any correlation with solvent polarity, however, reasonably good correlation with solvent E(T)(30) parameter was observed. A quantitative estimation of
G Ravi et al.
Journal of immunological methods, 445, 59-66 (2017-03-23)
Riboflavin (vitamin B
A Tyagi et al.
Journal of photochemistry and photobiology. B, Biology, 101(1), 76-88 (2010-07-27)
The wild-type phototropin protein phot from the green alga Chlamydomonas reinhardtii with the blue-light photoreceptor domains LOV1 and LOV2 has flavin mononucleotide (FMN) as cofactor. For the LOV1-His domain from phot of C. reinhardtii studied here, the FMN chromophore was
Mitesh Patel et al.
Brain research, 1468, 1-10 (2012-06-12)
Riboflavin is an important water soluble vitamin (B2) required for metabolic reactions, normal cellular growth, differentiation and function. Mammalian brain cells cannot synthesize riboflavin and must import from systemic circulation. However, the uptake mechanism, cellular translocation and intracellular trafficking of
Ewa Sikorska et al.
The journal of physical chemistry. A, 110(14), 4638-4648 (2006-04-08)
Quantum chemical density functional theory (DFT) calculations and spectral data were employed to investigate the possibility of the excited-state double proton transfer (ESDPT) in lumichrome crystals. The calculations in a lumichrome dimer predict a transfer of a proton in the
Lumichrome and phenyllactic acid as chemical markers of thistle (Galactites tomentosa Moench) honey.
Carlo I G Tuberoso et al.
Journal of agricultural and food chemistry, 59(1), 364-369 (2010-12-04)
HPLC-DAD-MS/MS chromatograms of thistle (Galactites tomentosa Moench) unifloral honeys, previously selected by sensory evaluation and melissopalynological analysis, showed high levels of two compounds. One was characterized as phenyllactic acid, a common acid found in honeys, but the other compound was
Iqbal Ahmad et al.
International journal of pharmaceutics, 280(1-2), 199-208 (2004-07-22)
The kinetics of photolysis of aqueous riboflavin solutions on UV and visible irradiation has been studied in the pH range 1-12 using a specific multicomponent spectrophotometric method for the simultaneous determination of riboflavin and its major photoproducts (formylmethylflavin, lumichrome and
Xiancheng Zeng et al.
The Journal of chemical physics, 130(16), 164111-164111 (2009-05-02)
A quantum mechanical/molecular mechanical minimum free energy path (QM/MM-MFEP) method was developed to calculate the redox free energies of large systems in solution with greatly enhanced efficiency for conformation sampling. The QM/MM-MFEP method describes the thermodynamics of a system on
Martin Grininger et al.
Journal of molecular biology, 357(3), 842-857 (2006-02-08)
Dodecin is a small dodecameric flavoprotein from Halobacterium salinarum that contains two flavins stacked between two tryptophan residues to form an aromatic tetrade. The functional properties of heterologously expressed dodecin were investigated by fluorescence spectroscopy, which allowed the determination of
Rongmin Huang et al.
Journal of agricultural and food chemistry, 54(6), 2359-2364 (2006-03-16)
Lumichrome and lumiflavin were formed from riboflavin under light. pH had a significant influence on the formation of lumichrome and lumiflavin from riboflavin. Lumichrome was the only major product from riboflavin under neutral or acidic pH values. Lumiflavin was also
Christina K Remucal et al.
Environmental science & technology, 45(12), 5230-5237 (2011-05-20)
The addition of photosensitizers to water can accelerate disinfection in sunlight-based systems by enhancing oxidation of target compounds through direct reaction with the excited sensitizer or through production of another oxidant, such as singlet oxygen (¹O₂). The kinetics of the
Robert T Burns et al.
PloS one, 9(11), e109535-e109535 (2014-11-13)
Marine sediments can contain B vitamins, presumably incorporated from settled, decaying phytoplankton and microorganisms associated with decomposition. Because B vitamins may be advantageous for the energetically intensive processes of metamorphosis, post-metamorphic growth, and reproduction, we tested several B vitamins to
Dorota Prukała et al.
The journal of physical chemistry. A, 116(28), 7474-7490 (2012-06-27)
Lumichrome photophysical properties at different pH were characterized by UV-vis spectroscopy and steady-state and time-resolved fluorescence techniques, in four forms of protonation/deprotonation: neutral form, two monoanions, and dianion. The excited-state lifetimes of these forms of lumichrome were measured and discussed.
Wajahatullah Khan et al.
Journal of plant physiology, 165(13), 1342-1351 (2008-01-15)
The foliar application of Nod factor [Nod Bj V (C(18:1), MeFuc)] enhanced (P<0.05) the photosynthetic rate of corn; the increases were 36%, 23% and 12% for 10(-6), 10(-8) and 10(-10)M treated plants, respectively. Similarly, lumichrome at 10(-5) and 10(-6)M stimulated
Wipa Chantarawong et al.
Nutrition and cancer, 71(8), 1390-1402 (2019-05-11)
Lumichrome, a major derivative of riboflavin, may exhibit pharmacological activity against cancer cells. Riboflavin is a vitamin found in food, however, certain evidence has suggested its possible potentiating effects on cancer progression. Here, we have shown for the first time
M Lilletvedt et al.
Die Pharmazie, 65(12), 871-876 (2011-02-03)
Complexation of the model drug lumichrome by 2-hydroxypropyl-beta-cyclodextrin (HPbetaCD), the most widely used cyclodextrin derivative in pharmaceutical preparations, was investigated in this study. The influence of frequently used pharmaceutical excipients, i.e. alcohols (ethanol, glycerol, propylene glycol), buffers (phosphate, citrate) and
Sara Gonçalves et al.
Environmental pollution (Barking, Essex : 1987), 238, 959-971 (2018-05-03)
Freshwater ecosystems are under threatening anthropogenic pressures worldwide, namely by metals. Diatoms are used as water quality indicators, but the influence of micronutrients such as Zn and its impacts are poorly understood. Thus, our study aimed to elucidate the tolerance
Carlo Ignazio Giovanni Tuberoso et al.
Food chemistry, 135(3), 1985-1990 (2012-09-08)
Riboflavin (vitamin B(2)) and its metabolite lumichrome were quantified in 117 samples from 11 unifloral honeys types (Arbutus unedo L., Asphodelus microcarpus Salzm. et Viv., Citrus spp., Eucalyptus spp., Hedysarum coronarium L., Castanea sativa L. honeydew, Mentha spp., Paliurus spina-christi.
Hiroshi Kanazawa et al.
Journal of bacteriology, 200(12) (2018-04-04)
The actinobacterium Microbacterium maritypicum splits riboflavin (vitamin B2) into lumichrome and d-ribose. However, such degradation by other bacteria and the involvement of a two-component flavin-dependent monooxygenase (FMO) in the reaction remain unknown. Here we investigated the mechanism of riboflavin degradation
Iqbal Ahmad et al.
Journal of photochemistry and photobiology. B, Biology, 93(2), 82-87 (2008-09-02)
The photolysis of riboflavin (RF) in the presence of borate buffer (0.1-0.5M) at pH 8.0-10.5 has been studied using a specific multicomponent spectrophotometric method for the determination of RF and photoproducts, formylmethylflavin (FMF), lumichrome (LC) and lumiflavin (LF). The overall
Benjamin Kachel et al.
Metabolic engineering, 62, 275-286 (2020-09-30)
Due to their capability of photosynthesis and autotrophic growth, cyanobacteria are currently investigated with regard to the sustainable production of a wide variety of chemicals. So far, however, no attempt has been undertaken to engineer cyanobacteria for the biotechnological production
Chiheng Chu et al.
Environmental science & technology, 49(9), 5511-5519 (2015-04-02)
Photochemical transformations greatly affect the stability and fate of amino acids (AAs) in sunlit aquatic ecosystems. Whereas the direct phototransformation of dissolved AAs is well investigated, their indirect photolysis in the presence of chromophoric dissolved organic matter (CDOM) is poorly
Partha Bairi et al.
The journal of physical chemistry. B, 114(35), 11454-11461 (2010-08-19)
Lumichrome (L) and melamine (M) produce thermoreversible hydrogels in LM31 and LM11 compositions, but LM13 composition does not produce hydrogel (the numbers indicate the respective molar ratio of the components). The formation of thermoreversible gels is confirmed from morphology, DSC
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
Homyra Tasnim et al.
Free radical biology & medicine, 156, 11-19 (2020-05-24)
MitoNEET is a mitochondrial outer membrane protein that hosts a redox active [2Fe-2S] cluster in the C-terminal cytosolic domain. Increasing evidence has shown that mitoNEET has an essential role in regulating energy metabolism in human cells. Previously, we reported that
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
Arif Sabah et al.
Pakistan journal of pharmaceutical sciences, 33(2(Supplementary)), 877-885 (2020-08-31)
The light sensitive pharmaceutical dosage forms are well protected from light by packing in light protective bottles especially the colored glass and plastic bottles. In the present study the transmission characteristics of transparent glass bottle, amber glass bottle, polyvinyl chloride
Yusuke Sato et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 29(1), 15-19 (2013-01-11)
We describe a competitive binding assay for the analysis of single-base mutation by using abasic site (AP site)-specific binding fluorescent ligands and masking ligands bound to the AP site in DNA duplexes. 2-Amino-5,6,7-trimethyl-1,8-naphthyridine (ATMND) can strongly bind to not only
Sathish Rajamani et al.
Molecular plant-microbe interactions : MPMI, 21(9), 1184-1192 (2008-08-15)
Many bacteria use quorum sensing (QS) as an intercellular signaling mechanism to regulate gene expression in local populations. Plant and algal hosts, in turn, secrete compounds that mimic bacterial QS signals, allowing these hosts to manipulate QS-regulated gene expression in
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