Grape anthocyanin oligomerization: A putative mechanism for red color stabilization?

In this study, once-daily porosity osmotic pump tablets (POPTs) of Glimepiride were prepared using HPMC K100M (61%), osmotic agent (30% NaCl) coated using two different coating techniques spraying and dipping methods. The coating solution composed of ethyl cellulose (7.5%) w\w in ethanol (90%), castor oil (2%) as water-insoluble plasticizer and Gingo red color (0.5% w\w). In both techniques, the coating level was adjusted to give a 10% increase in the weight of the tablets. The effect of the coating by dipping technique with an increase in the weight of tablet (10 %, 20% & 50%) was also investigated to see the effect coating level on the percentage of drug release from POPTs. The results of the in vitro release of Glimepiride from tablets coated by the spraying method showed longer release time (24 hrs) than those coated with dipping method. On the other hand, increasing the coating level by dipping method retarded the release of the drug from tablets. However, the same retardation effect on release as shown with the spraying technique was only obtained by increasing the coating level with a 50% increase in the weight of the tablet. Thus, coating by spraying is more efficient to prepare POPTs to give a continuous release of Glimepiride from once daily table with the lowest increase in the total weight of the tablet.

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WIELAND-M15

Alloy Digest ◽

10.31399/asm.ad.cu0694 ◽

2002 ◽

Vol 51 (12) ◽

Keyword(s):

Electrical Conductivity ◽

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

Zinc Alloy ◽

Bend Strength ◽

Red Color ◽

Copper Zinc

Abstract Wieland-M15 is copper-zinc alloy with good electrical conductivity and a red color useful in decorative applications. The alloy has also been called red brass, 85%, and CA 230. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: CU-694. Producer or source: Wieland Metals Inc., Wieland-Werke AG.

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Hydrophobic Particle Films Improve Tree Fruit Productivity

HortScience ◽

10.21273/hortsci.33.3.548a ◽

1998 ◽

Vol 33 (3) ◽

pp. 548a-548 ◽

Cited By ~ 3

Author(s):

D.M. Glenn ◽

G. Puterka ◽

T. Baugher ◽

T. Unruh ◽

S. Drake

Keyword(s):

West Virginia ◽

Production Systems ◽

Fruit Size ◽

The United States ◽

Fruit Production ◽

Red Color ◽

Tree Fruit ◽

Fruit Productivity ◽

Leaf Level ◽

Hydrophobic Particle

Hydrophobic particle film technology (HPF) is a developing pest control system for tree fruit production systems. Studies were established in Chile, and Washington, Pennsylvania, and West Virginia in the United States, to evaluate the effect of HPF technology on tree fruit yield and quality. Studies in Chile, Washington, and West Virginia demonstrated increased photosynthetic rate at the leaf level. Yield was increased in peaches (Chile) and apples (West Virginia), and fruit size was increased in apples (Washington and Pennsylvania). Increased red color in apple was demonstrated at all sites with reduced russetting and `Stayman' cracking in Pennsylvania. HPF technology appears to be an effective tool in reducing water and heat stress in tree fruit resulting in increased fruit quality.

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Dimerization of the Antimicrobial Peptide Polyphemusin I into One Polypeptide Chain: Theoretical and Practical Consequences

Biotekhnologiya ◽

10.21519/0234-2758-2019-35-5-36-41 ◽

2019 ◽

Vol 35 (5) ◽

pp. 36-41

Author(s):

V.A. Zenin ◽

E.G. Sadykhov ◽

A.N. Fedorov

Keyword(s):

Antimicrobial Peptides ◽

Pore Formation ◽

Lipid Membrane ◽

Polypeptide Chain ◽

Unique Identifier ◽

Bacterial Cultures ◽

In Series ◽

The Russian Federation ◽

Peptide Dimerization ◽

Putative Mechanism

A strategy of sequential dimerization of monomers of antimicrobial peptides (AMPs) into one polypeptide chain has been implemented on the example of a beta-structural AMP polyphemusin I which is one of the most effective candidate for use as an antibiotic. The possible polyphemusin I monomer and dimer structures in lipid membrane were studied in this work via molecular modeling. To this end, these molecules were chemically synthesized so that the dimer represented two monomers connected in series into one polypeptide chain with a flexible linker. The antimicrobial effects of monomer and dimer were then tested on various bacterial cultures, and their similarity was shown. Therefore, we can conclude that the pore formation is not a putative mechanism of the polyphemusin I action. antimicrobial peptides, peptide dimerization, mechanism of antimicrobial action, polyphemusin The work was supported by the Ministry of Science and Higher Education of the Russian Federation (Project Unique Identifier RFMEFI57517X0151).

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Enzymatic colorimetry of lecithin and sphingomyelin in aqueous solution.

Clinical Chemistry ◽

10.1093/clinchem/29.8.1513 ◽

1983 ◽

Vol 29 (8) ◽

pp. 1513-1517 ◽

Cited By ~ 10

Author(s):

M W McGowan ◽

J D Artiss ◽

B Zak

Keyword(s):

Aqueous Solution ◽

Hydrogen Peroxide ◽

Amniotic Fluid ◽

Enzymatic Reaction ◽

Detergent Solution ◽

Enzymatic Determination ◽

Red Color ◽

Hydrolysis Of ◽

Zwitterionic Detergent

Abstract A procedure for the enzymatic determination of lecithin and sphingomyelin in aqueous solution is described. The phospholipids are first dissolved in chloroform:methanol (2:1 by vol), the solvent is evaporated, and the residue is redissolved in an aqueous zwitterionic detergent solution. The enzymatic reaction sequences of both assays involve hydrolysis of the phospholipids to produce choline, which is then oxidized to betaine, thus generating hydrogen peroxide. The hydrogen peroxide is subsequently utilized in the enzymatic coupling of 4-aminoantipyrine and sodium 2-hydroxy-3,5-dichlorobenzenesulfonate, an intensely red color being formed. The presence of a non-reacting phospholipid enhances the hydrolysis of the reacting phospholipid. Thus we added lecithin to the sphingomyelin standards and sphingomyelin to the lecithin standards. This precise procedure may be applicable to determination of lecithin and sphingomyelin in amniotic fluid.

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Design and synthesis of a novel quinoxaline diamine and its polyimides with high-Tg and red color

Polymer ◽

10.1016/j.polymer.2019.121612 ◽

2019 ◽

Vol 179 ◽

pp. 121612 ◽

Cited By ~ 3

Author(s):

Tuan-Qing Liu ◽

Feng Zheng ◽

Tong-Mei Ding ◽

Shu-Yu Zhang ◽

Qinghua Lu

Keyword(s):

Design And Synthesis ◽

Red Color

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Magnesium and Hearing

Journal of the American Academy of Audiology ◽

10.1055/s-0040-1715728 ◽

2003 ◽

Vol 14 (04) ◽

pp. 202-212 ◽

Cited By ~ 5

Author(s):

Michael J. Cevette ◽

Jürgen Vormann ◽

Kay Franz

Keyword(s):

Hair Cells ◽

Auditory Nerve ◽

Mg Deficiency ◽

Noise Damage ◽

Susceptibility To Noise ◽

Major Progress ◽

A Current ◽

Putative Mechanism ◽

Increased Susceptibility

The last several decades have revealed clinical and experimental data regarding the importance of magnesium (Mg) in hearing. Increased susceptibility to noise damage, ototoxicity, and auditory hyperexcitibility are linked to states of Mg deficiency. Evidence for these processes has come slowly and direct effects have remained elusive because plasma Mg levels do not always correlate with its deficiency. Despite the major progress in the understanding of cochlear mechanical and auditory nerve function, the neurochemical and pharmacologic role of Mg is not clear. The putative mechanism suggests that Mg deficiency may contribute to a metabolic cellular cascade of events. Mg deficiency leads to an increased permeability of the calcium channel in the hair cells with a consequent over influx of calcium, an increased release of glutamate via exocytosis, and over stimulation of NMDA receptors on the auditory nerve. This paper provides a current overview of relevant Mg metabolism and deficiency and its influence on hearing.

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Influence of the Bottom Color Modification and Material Color Modification Process on the Performance of Modified Poplar

Coatings ◽

10.3390/coatings11060660 ◽

2021 ◽

Vol 11 (6) ◽

pp. 660

Author(s):

Qingqing Liu ◽

Di Gao ◽

Wei Xu

Keyword(s):

Chemical Properties ◽

Target Color ◽

Modification Process ◽

Red Color ◽

The Difference ◽

Pre Treatment ◽

Physical And Chemical ◽

Surface Differentiation ◽

Color Modification ◽

And Chemical Properties

According to the old surface coating process of European and American furniture, the surface of modified poplar is first differentiated pre-treatment, and then the bottom color modification and material color modification are respectively applied to the modified poplar after the surface differentiation treatment. The visual physical quantity and physical and chemical properties were measured and compared with mahogany, which is commonly used in old furniture in Europe and America to explore the effect of colorants and coloring steps, as well as different surface pretreatments on the coloring effect. Finally, it is concluded that continuous coloring operations can narrow the difference in brightness and red color value in the coloring layer of modified poplar and mahogany. Continuous coloring operations increase the difference between the yellow-green color values of modified poplar and mahogany. Therefore, the coloring difference between modified poplar and mahogany was affected by the colorant and coloring steps. Through color accumulation, the gap between the two in the target color coloring effect can be reduced, thereby reducing the difference between the coloring effect of modified poplar and mahogany.

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