Concise Multigram Purification of Guayulin A from Guayule

Zoeller, J.H.; Wagner, James W.; Sulikowski, Gary A.

doi:10.1021/jf00044a012

Cited by 11 publications

(2 citation statements)

References 8 publications

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“…The guayulin A standard (98% purity) was isolated in our laboratory due to the absence of commercial standards. Low molecular-weight guayule rubber (LMWGR) was removed from the resin extract [ 39 ]. Then, free-rubber resin was fractionated using flash chromatography (VersaFlash Station System I equipped with a Versaflash cartridge, 23 mm × 110 mm, containing Spherical C18 bonded silica 30 g, 20–45 μm) with acetonitrile: water (80:20) as solvent and a flow rate of 20 cm −3 /min.…”

Section: Methodsmentioning

confidence: 99%

Effect of Seasonal Decrease in Temperature on the Content and Composition of Guayulins in Stems of Guayule (Parthenium argentatum, Gray)

Rozalén

García-Martínez

Carrión

et al. 2021

Plants

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The guayulins are a family of sesquiterpene compounds that consist of an isoprenoid nucleus substituted either by trans-cinnamic or p-anisic acid, and are present only in the resinous fraction of the rubber plant guayule (Parthenium argentatum, Gray). While the natural role of the guayulins remains enigmatic, they may serve as a defense function against other plants or herbivores by virtue of the accumulation of cinnamic acid. Prior research has suggested seasonal variation in guayulin content, which has been shown to decrease as winter arrives in two different varieties. In the present study, the effect of guayulins has been evaluated in 13 different accessions cultivated under the same conditions during autumn. A general reduction in guayulin content was found in the stems from all varieties between the September and November harvest, which was accompanied by an increase in the resin content. With respect to individual guayulins, while guayulin A was the most prominent member during most of the year, guayulin C had more prominence when temperature started to decrease. In this seasonal period, the production of each member of the guayulin family in the leaves was very balanced.

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Section: Methodsmentioning

confidence: 99%

Effect of Seasonal Decrease in Temperature on the Content and Composition of Guayulins in Stems of Guayule (Parthenium argentatum, Gray)

Rozalén

García-Martínez

Carrión

et al. 2021

Plants

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“…Several procedures have been developed to extract the rubber and resin from guayule [63]. Relatively large bench-scale isolation of guayulin A (9 g) from defoliated guayule (30 kg), which also allowed the isolation of guayulin B albeit in relatively low yield, has been demonstrated [64]. The method consisted of double extraction of ground guayule branches in acetone at 50 • C for an hour, which were combined and evaporated to generate a viscous turbid green syrup.…”

Section: Guayulin Extraction Processesmentioning

confidence: 99%

Potential Applications of Guayulins to Improve Feasibility of Guayule Cultivation

2019

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Guayule (Parthenium argentatum Gray) is an interesting alternative and renewable source of rubber/latex which has been used in the past. Guayule rubber and latex products are not available in the market largely because the raw material cost is higher than the current sources produced in South-East Asia and other tropical countries (Hevea brasiliensis). Guayule contains many other compounds whose joint exploitation could make guayule cultivation profitable, especially in semi-desert areas where cultivation of other crops is difficult or impossible. Guayulins A–D, sesquiterpene esters, appear to have some commercial promise. Despite being accumulated in relatively high concentrations (its majority representative, guayulin A, can account for up to 13.7% of the resin content of this plant, which itself ranges from 6%–12%), guayulins have received little direct attention from scientists. This review presents the current knowledge about the activity of these compounds and, based on known activities of similar compounds from other species, potential uses as fungicides, miticides and insecticides are suggested.

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Integrated Biorefinery to Renewable‐Based Chemicals

Girotti¹,

Ricci²

2016

Chemicals and Fuels From Bio‐Based Building Blocks

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Concise Multigram Purification of Guayulin A from Guayule

Cited by 11 publications

References 8 publications

Effect of Seasonal Decrease in Temperature on the Content and Composition of Guayulins in Stems of Guayule (Parthenium argentatum, Gray)

Effect of Seasonal Decrease in Temperature on the Content and Composition of Guayulins in Stems of Guayule (Parthenium argentatum, Gray)

Potential Applications of Guayulins to Improve Feasibility of Guayule Cultivation

Integrated Biorefinery to Renewable‐Based Chemicals

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