Abstract
Portions of an acetone-hexane (1:4) extract of Ponderosa pine sawdust were exposed to gamma and ultraviolet radiation. The three solutions, including the original, were checked for antibiotic activity on: Staphylococcus aureus Escherichia coli and Bacillus cereus. Results indicated that each solution inhibited the growth of the bacteria.
The three solutions were separated into fractions by 'column' chromatography on silica gel, using chloroform-carbon tetrachloride (1:1) as the elutant and then 10-20-50-80% ethanol in the chloroform- carbon tetrachloride mixture and finally 100% ethanol. Ten fractions were obtained from each sample and these were each tested on the bacteria. Results indicated a number of fractions having antibiotic activity. The original and gamma irradiated sample being about equal in activity, with the ultraviolet irradiated sample showing less activity than the other two. The paper includes I R spectrograms of the most active fractions. They appear to be made up, mainly, of aliphatic acids and aldehydes.
Department
Chemistry
School
Graduate School
First Advisor
William D. Leech
Second Advisor
Maurice E. Mathisen
Third Advisor
George J. Nelson
Fourth Advisor
Bernard E. Tilton
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1967
Date (Title Page)
8-1967
Language
English
Library of Congress/MESH Subject Headings
Ponderosa pine -- Analysis; Wood waste -- Analysis
Type
Thesis
Page Count
vi; 29
Digital Format
Digital Publisher
Loma Linda University Libraries
Copyright
Author
Usage Rights
This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.
Recommended Citation
York, Mervin B., "Radiolysis of the Extract from the Sawdust of the Ponderosa Pine" (1967). Loma Linda University Electronic Theses, Dissertations & Projects. 829.
https://scholarsrepository.llu.edu/etd/829
Collection
Loma Linda University Electronic Theses and Dissertations
Collection Website
http://scholarsrepository.llu.edu/etd/
Repository
Loma Linda University. Del E. Webb Memorial Library. University Archives