Investigation of surface properties of quince seed extract as a novel polymeric surfactant

2021 ◽  
pp. 107185
Author(s):  
Emrah Kirtil ◽  
Tatyana Svitova ◽  
Clayton J. Radke ◽  
Mecit Halil Oztop ◽  
Serpil Sahin
2021 ◽  
Vol 11 (3) ◽  
pp. 3678-3688

Poly (4-vinyl pyridine) (P4-VP) was quaternized and complexed with salt chloride to obtain polymeric surfactant complexes having to improve surface properties and microbial activity. P4-VP was quarternized by trimethyl chloro silane to give (QP4-VP) (I) and then complexed by using stannous chloride and cobalt chloride to give polymeric surfactant complexes. The quaternized P4-VP and its complexes were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Also, the surface properties of this polymeric surfactant and its complexes were studied. The influence of metal chlorides on the antibacterial activity of this polymeric surfactant was estimated and screened through the length of the field of hindrance versus various microorganisms. It shows an enhancement in the surface characteristics and fine germicidal action for quaternized P4-VP when complexed with metal chlorides. The designed cationic polymeric surfactant and its complexes have a good biological action against all such microorganisms.


2007 ◽  
Vol 69 (4) ◽  
pp. 625-630 ◽  
Author(s):  
Pan Hong ◽  
Cheng Fa ◽  
Yuping Wei ◽  
Zhu Sen

Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg

Several years ago Karasaki (1) reported the production of type C virus particles by Novikoff ascites hepatocarcinoma cells. More recently, Weinstein (2) has reported the presence of type C virus particles in cell cultures derived from transplantable and primary hepatocellular carcinomas. To date, the biological function of these virus and their significance in chemically induced hepatocarcinogenesis are unknown. The present studies were initiated to determine a possible role for type C virus particles in chemically induced hepatocarcinogenesis. This communication describes results of studies on the biological and surface properties of type C virus associated with Novikoff hepatocarcinoma cells.Ecotropic and xenotropic murine leukemia virus (MuLV) activity in ascitic fluid of Novikoff tumor-bearing rats was assayed in murine sarcoma virus transformed S+L- mouse cells and S+L- mink cells, respectively. The presence of sarcoma virus activity was assayed in non-virus-producing normal rat kidney (NRK) cells. Ferritin conjugates of concanavalin A (Fer-Con wheat germ agglutinin (Fer-WGA), and Ricinus communis agglutinins I and II (Fer-RCAI and Fer-RCAII) were used to probe the structure and topography of saccharide determinants present on the viral envelope.


Author(s):  
R. H. Ritchie ◽  
A. Howie

An important part of condensed matter physics in recent years has involved detailed study of inelastic interactions between swift electrons and condensed matter surfaces. Here we will review some aspects of such interactions.Surface excitations have long been recognized as dominant in determining the exchange-correlation energy of charged particles outside the surface. Properties of surface and bulk polaritons, plasmons and optical phonons in plane-bounded and spherical systems will be discussed from the viewpoint of semiclassical and quantal dielectric theory. Plasmons at interfaces between dissimilar dielectrics and in superlattice configurations will also be considered.


Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
A Swaroop ◽  
A Sarkari Jaipuriar ◽  
P Kumar ◽  
D Bagchi

2020 ◽  
Author(s):  
Rohlf CM ◽  
Garcia TC ◽  
Marsh LJ ◽  
Fyhrie DP ◽  
le Jeune SS ◽  
...  
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