Results 131 to 140 of about 489,067 (174)

Monitoring separation tendency of partial asphalt replacement by crumb rubber modifier and guayule resin

Construction and Building Materials, 2020
Abstract Guayule resin was utilized as a partial asphalt replacer for sustainable, flexible pavement. This research aimed to study the effect of such an innovative replacer on asphalt-rubber separation tendency. The replacement denoted 25–75% triggering a binder competitive with conventional asphalt.
Ahmed Hemida, Magdy Abdelrahman
exaly   +3 more sources

The leachability of guayule resin from treated wood

Industrial Crops and Products, 1993
Abstract Field evaluation has shown that guayule resin has potential as a protectant for wood against damage by terrestrial wood-destroying organisms. When used in this capacity, it is essential to know whether the resin migrates from the wood, as a contaminant, into the natural environment.
J.D. Bultman, W.W. Schloman
exaly   +3 more sources

Ultrafiltration of Guayule Resin

Journal of Membrane Science, 1995
Abstract The ability of ultrafiltration membranes to effect a separation of the volatle essential oil fraction of guayule resin from other volatile constituents is experimentally demonstrated. For a methanol extraction of guayule resin, 200 and 500 molecular weight cut-off cellulose triacetate ultrafiltration membranes produced a permeate rich in ...
Ranjit S. Jeyaseelan, John P. Wagne
exaly   +3 more sources

Microbial transformation of some triterpenoids of Guayule resin by Chaetomium sp.

Phytochemistry Letters, 2023
Microbial biotransformation of argentatin A (1), isoargentatin A (2) and argentatin C (3), the triterpenoid constituents of guayule (Parthenium argentatum) resin was conducted with Chaetomium sp. PA001, an endophytic fungus of the same plant. The experiments yielded six new products (4–9) formed by: (i) nucleophilic oxygenation of the 3-ketone moiety ...
Marielle C. Inacio, Weimao Zhong, Ya-Ming Xu, E.M. Kithsiri Wijeratne, Chandrashekhar Madasu, István Molnár, A.A. Leslie Gunatilaka   +6 more
openaire   +3 more sources

Cutting height effects on guayule latex, rubber, and resin yields

Industrial Crops and Products, 2010
Abstract Guayule (Parthenium argentatum Gray) is a perennial shrub native to the Chihuahuan Desert. While guayule traditionally has been cultivated for rubber, more recently it is being cultivated for its hypoallergenic latex. Other uses including termite resistant wood products and as an energy source have also been identified.
T A Coffelt, D T Ray
exaly   +3 more sources

Improved methods for extraction and quantification of resin and rubber from guayule

Industrial Crops and Products, 2009
Abstract Guayule, a shrub native to the Chihuahuan desert, is a natural source of high quality, hypoallergenic rubber. Unlike rubber trees that produce rubber in laticifers, the rubber in guayule is produced in parenchyma cells of the bark tissue of stems and roots.
Michael E Salvucci, Terry A Coffelt, Katrina Cornish   +2 more
exaly   +2 more sources

Biomass, rubber, and resin yield potentials of new guayule germplasm

Bioresource Technology, 1991
Abstract Substantial improvement in rubber yield must be made in order to establish guayule as a reliable source of natural rubber. Selection among heterogeneous apomictic polyploids was used to improve rubber yield in a relatively short period of time.
Ali Estilai
exaly   +2 more sources

Degradative Effects of Guayule Resin on Natural Rubber

Rubber Chemistry and Technology, 1981
Abstract This study indicates that the degradative effects of guayule resin on natural rubber are due to the presence of unsaturated fatty acids in the resin. Since linoleic acid is, by far, the most abundant unsaturated fatty acid in guayule resin, it appears that linoleic acid is primarily responsible for the degradative effects of guayule ...
R. W. Keller, D. S. Winkler, H. L. Stephens   +2 more
openaire   +2 more sources

New application of guayule resin in controlled release formulations

Industrial Crops and Products, 2013
Abstract Guayule resin is a by-product of the rubber extraction process from Parthenium argentatum Gray shrubs. When guayule is cultivated to a large extent, it is possible to achieve a production of 200–2000 kg/ha of resin in addition to the commercial natural rubber production that is sought for use as hypoallergenic latex.
M.J. Pascual-Villalobos, M.D. López
openaire   +2 more sources

Investigating the biopesticide activity of guayule resin

Research Outreach, 2022
increase in the future. A source of natural rubber, guayule is likely to be the solution to predicted future shortages. In addition, a substance left over from the manufacturing process of rubber from guayule has other interesting applications.
M. Carmona
openaire   +2 more sources