Guayule rubber and latex content — seasonal variations over time in Argentina

Coates, Wayne; Ayerza, Ricardo; Ravetta, D.A.

doi:10.1016/s0926-6690(00)00091-1

Cited by 13 publications

(3 citation statements)

References 8 publications

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“…Compared to the Australian results, our values were lower for AZ-1 or very lower for AZ-2, but similar or higher for 11591. Potential rubber yields were overall lower than our values for the same 11591 accession when grown in Argentina [28] where the different season at harvest had little effect on yield performances. Not surprisingly, rubber and resin yields were also affected by plant dry matter yields, which also varied in the different experiments.…”

Section: Discussioncontrasting

confidence: 88%

Adaptation, Biometric Traits and Performances of Guayule Lines Grown in Two Mediterranean Environments

et al. 2020

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The perennial shrub guayule (Parthenium argentatum A. Gray) has gained interest as a potential source of natural and hypoallergenic rubber in Southern Europe. Although, native to northern Mexico, it is suited to semi-arid and Mediterranean environments. A research study was conducted in Sardinia (Italy) to evaluate adaptation and biometric traits of introduced guayule lines and to determine the contents and yields of rubber and resin obtainable from its aboveground biomass. Seedlings of the accessions AZ-1, AZ-2, P803, and 11591 were field transplanted in 2015 at two locations of southern, and northern Sardinia, respectively, differing for annual precipitation. Plant survival rate, height and width, trunk diameter, leaf chlorophyll concentration and photosystem photochemical efficiency were monitored. Shoots were harvested at 30 months after transplanting and were partitioned into twigs and remaining stems and its rubber and resin contents were determined. Location markedly affected plant survival rates and biometric traits. Dry matter yield of aboveground components as well as contents of rubber and resin and plant rubber and resin yields differed significantly among accessions under comparison. We found that AZ1 and 11591 were the most successful accessions at southern Sardinia site, whereas 11591 was the only accession exhibiting a satisfactory plant survival rate in the northern location.

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Section: Discussioncontrasting

confidence: 88%

Adaptation, Biometric Traits and Performances of Guayule Lines Grown in Two Mediterranean Environments

et al. 2020

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“…Countries near the Mediterranean Sea, like France, Spain, Italy, Greece, Turkey, Israel and Morocco are suitable too [ 30 ]. Several other countries have also conducted guayule crop trials such as Argentina [ 31 ], Australia [ 32 ] and South Africa [ 33 ].…”

Section: Botanical Description Geographical Distribution and Cultmentioning

confidence: 99%

Guayule (Parthenium argentatum A. Gray), a Renewable Resource for Natural Polyisoprene and Resin: Composition, Processes and Applications

et al. 2021

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Natural rubber is an essential material, especially for plane and truck tyres but also for medical gloves. Asia ranks first in the production of natural rubber, of which the Hevea tree is currently the sole source. However, it is anticipated that this source alone will not be able to fulfill the growing demand. Guayule, a shrub native to northern Mexico and southern United States, may also contribute. This plant not only contains polyisoprene, but also resin, a mixture of lipids and terpenoids. This review summarizes various aspects of this plant, from the usage history, botanical description, geographical distribution and cultivation practices, down to polyisoprene and resin biosynthesis including their distribution within the plant and molecular composition. Finally, the main processes yielding dry rubber or latex are depicted, as well as the properties of the various extracts along with economic considerations. The aim is to provide a wide picture of current knowledge available about this promising crop, a good feedstock candidate for a multiple-product biorefinery.

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“…Parthenium argentatum (Gray), commonly known as guayule, produce a high molecular weight natural rubber, comparable in quality to H. brasiliensis , and it has been proposed as a viable commercial alternative for hypoallergenic latex 8–10. Other comparable sources of high‐quality natural rubber are the rubber‐bearing plants native to the mountains of Kazakhstan and Uzbekistan, Taraxacum kok‐saghyz , Scorzonera tau‐saghyz, and Scorzonera uzbekistanica ,11 and the banyan tree Ficus benghalesis 12.…”

Section: Introductionmentioning

confidence: 99%

Extraction and characterization of a natural rubber from Euphorbia characias latex

et al. 2012

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A natural rubber was identified and characterized for the first time in the latex of the perennial Mediterranean shrub Euphorbia characias. Four different methods, i.e., acetone, acetic acid, trichloroacetic acid, and Triton® X-100, followed by successive treatments with cyclohexane/ethanol, were employed to extract the natural rubber. The rubber content was shown to be 14% (w/v) of the E. characias latex, a low content compared with that of Hevea brasiliensis (30-35%) but a similar content to other rubber producing plants. E. characias rubber showed a molecular weight of 93,000 with a M(w) /M(n) of 2.9. (1) H NMR, (13) C NMR, and FTIR analysis revealed the characteristic of the cis-1,4-polyisoprene typical of natural rubber. These results provided novel insight into latex components and will ultimately benefit the broader understanding of E. characias latex composition.

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Guayule rubber and latex content — seasonal variations over time in Argentina

Cited by 13 publications

References 8 publications

Adaptation, Biometric Traits and Performances of Guayule Lines Grown in Two Mediterranean Environments

Adaptation, Biometric Traits and Performances of Guayule Lines Grown in Two Mediterranean Environments

Guayule (Parthenium argentatum A. Gray), a Renewable Resource for Natural Polyisoprene and Resin: Composition, Processes and Applications

Extraction and characterization of a natural rubber from Euphorbia characias latex

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