scholarly journals Antibacterial profile of fermented seed extracts of ricinus communis: findings from a preliminary analysis

2010 ◽  
Vol 23 (1-2) ◽  
Author(s):  
G.T.A Jombo ◽  
M.N.O Enenebeaku
Keyword(s):  
Preliminary Analysis ◽  
Ricinus Communis ◽  
Seed Extracts

scholarly journals Effect of pesticides on microbial diversity on agricultural soil in the locality of Akonolinga in the Centre Region - Cameroon

2021 ◽  
Vol 2 (1) ◽  
pp. 028-039
Author(s):  
Manga Anaba Désiré ◽  
Anaba Manga Jacques Denis ◽  
Ngono Ambassa Véronique ◽  
Kuate Tueguem William Norbert ◽  
Ndongo Bekolo ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Plant Extracts ◽  
Agricultural Soil ◽  
Ricinus Communis ◽  
Environmental Preservation ◽  
Bacterial Colony ◽  
Acetone Water ◽  
Centre Region ◽  
Bacteria And Fungi ◽  
Seed Extracts

Bacteria and fungi constitute microorganisms which provide essential services to the soil ecosystem, not only for the maintenance of its fertility, but also for the degradation of certain pollutants. The present study was carried out to evaluate the effects of a synthetic fungicide and seed extracts of two fungicidal plants (Anonidium mannii and Ricinus communis) on microorganisms in an agricultural soil sample. With the solvents acetone, water and methanol, seed extracts of A. mannii and R. communis were used for phytochemical screening and for the preparation of solutions with concentrations of 50 µl/ml corresponding to fungistatic doses. For microbial colony enumeration, 10-1 dilutions for fungi and 10-2 dilutions for bacteria were spread on the surface of SCA medium supplemented with recommended doses of the chemical fungicide and 50 µl/ml concentrations of A. mannii and R. communis seed extracts. Petri dishes containing these mixtures are incubated with bacteria at 30°C for 24 hours and with the fungi for 7 days. At the end of each period, the types of microorganisms are differentiated by the colours of the colonies formed. For doses recommended for farmers, the chemical fungicide Monchamp 720WP destroys all bacterial and fungal life on solid SCA agar. In extracts containing abundant alkaloids, bacterial colony counts are low while in extracts containing metabolites, bacterial colonies are high. Different groups of fungi were differentiated by the coloration of the colonies formed. A significant number of fungal colonies of different colours were observed in the presence of extracts containing alkaloids and sterols/triterpenes. Microbial diversity will reduce the bactericidal and fungal activity of the plant extracts used and will favour their multiplication in the media. The inability of these plant extracts to destroy microorganisms continues to provide beneficial ecologically services to the ecosystem which ensures soil fertility and environmental preservation. Thus, the use of these plant extracts ensures good environmentally agriculture

FeXIV Line Emission Polarization of the July 11, 1991 Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož
Keyword(s):  
High Resolution ◽  
Solar Corona ◽  
Emission Line ◽  
Solar Eclipse ◽  
White Light ◽  
Preliminary Analysis ◽  
Line Emission ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
High Resolution Images

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.

Biological and Surface Properties of C-Type Virus Particles Produced by Novikoff Ascites Hepatoma Cells

1977 ◽  
Vol 35 ◽  
pp. 388-389
Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg
Keyword(s):  
Surface Properties ◽  
Ricinus Communis ◽  
Rat Kidney ◽  
Leukemia Virus ◽  
Viral Envelope ◽  
Virus Particles ◽  
Chemically Induced ◽  
Sarcoma Virus ◽  
Hepatocarcinoma Cells ◽  
Type C

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.

Lectin Binding to Human Breast Tumor Cells

1976 ◽  
Vol 34 ◽  
pp. 34-35
Author(s):  
Robert E. Nordquist ◽  
J. Hill Anglin ◽  
Michael P. Lerner
Keyword(s):  
Carcinoma Cell ◽  
Ricinus Communis ◽  
Lectin Binding ◽  
Low Frequency ◽  
Breast Carcinoma Cell Line ◽  
Human Breast ◽  
Human Breast Tumor ◽  
Duct Carcinoma ◽  
Specific Antigens ◽  
Ricin Agglutinin

A human breast carcinoma cell line (BOT-2) was derived from an infiltrating duct carcinoma (1). These cells were shown to have antigens that selectively bound antibodies from breast cancer patient sera (2). Furthermore, these tumor specific antigens could be removed from the living cells by low frequency sonication and have been partially characterized (3). These proteins have been shown to be around 100,000 MW and contain approximately 6% hexose and hexosamines. However, only the hexosamines appear to be available for lectin binding. This study was designed to use Concanavalin A (Con A) and Ricinus Communis (Ricin) agglutinin for the topagraphical localization of D-mannopyranosyl or glucopyranosyl and D-galactopyranosyl or DN- acetyl glactopyranosyl configurations on BOT-2 cell surfaces.

AAC Supports for Individuals With Rett Syndrome Across the Lifespan

2015 ◽  
Vol 24 (3) ◽  
pp. 74-85
Author(s):  
Sandra M. Grether
Keyword(s):  
Rett Syndrome ◽  
Communication Skills ◽  
Preliminary Analysis ◽  
Multidisciplinary Approach ◽  
Motor Deficits ◽  
Complex Profile ◽  
Communication Behaviors ◽  
The Individual

Individuals with Rett syndrome (RS) present with a complex profile. They benefit from a multidisciplinary approach for diagnosis, treatment, and follow-up. In our clinic, the Communication Matrix © (Rowland, 1990/1996/2004) is used to collect data about the communication skills and modalities used by those with RS across the lifespan. Preliminary analysis of this data supports the expected changes in communication behaviors as the individual with RS ages and motor deficits have a greater impact.

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