Taraxacum kok-saghyz (TK): compositional analysis of a feedstock for natural rubber and other bioproducts

Ramirez-Cadavid, David A.; Cornish, Katrina; Michel, Frederick C.

doi:10.1016/j.indcrop.2017.05.043

Cited by 70 publications

(70 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, this behavior means that this species is not currently a good candidate for latex production, but rather a source of solid rubber. The latex phase can be converted to the solid form by root drying, after which all the rubber can be extracted by a single process (Ramirez-Cadavid et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Accelerated solvent extraction. Accelerated solvent extraction (ASE) (Luthria et al, 2004) was used to quantify rubber content, similar to part of a published procedure (Ramirez-Cadavid et al, 2017), with modifi-cations required to shorten the analytical procedure and permit larger sample numbers to be analyzed. The dried homogenized root samples were finely ground using an analytical mill (IKA 11 basic; IKA, Wilmington, NC) for 10 s or until sample uniformity was achieved by visual estimation.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Planting Density and Growth Cycle Affect Actual and Potential Latex and Rubber Yields in Taraxacum kok-saghyz

Bates¹,

Mcnulty²,

Amstutz³

et al. 2019

horts

Self Cite

View full text Add to dashboard Cite

Rubber dandelion (Taraxacum kok-saghyz, Rodin) is being developed as a temperate-zone source of rubber, but best agronomic practices must be determined before it can become a viable supplement to imported rubber produced from para rubber tree (Hevea brasiliensis, hevea) plantations located mostly in Southeast Asia. In our study, the effect of planting density and harvest time on yield was determined by transplanting 1.5-month-old greenhouse-produced plants at planting densities of 1.24, 2.47, 4.94, and 9.88 million plants/ha, randomized across four planting boxes with two densities per box (i.e., two planting areas at each density). Half of each planting area was selected randomly and hand-harvested after 6 months, and the remaining plants were hand-harvested after 1 year. Rubber yields per plant were greater after 1 year than after 6 months, but yields per unit area were similar as a result of the loss of half the plants during the severe 2013–14 Ohio winter. A maximum rubber yield of 960 kg dry rubber/ha was obtained from the 9.88 million-plants/ha planting density after 1 year, but root size was significantly decreased compared with lower densities, and appeared too small for mechanical harvest. A planting density between 2.47 and 4.94 million plants/ha may produce the optimal combination of root size and total rubber yield. Greater rubber concentrations, faster-growing plants, short-season germplasm, and in-field weed control are required before yields obtained in outdoor planting boxes can be matched or exceeded on farms, especially in a direct-seeded rubber dandelion crop.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Planting Density and Growth Cycle Affect Actual and Potential Latex and Rubber Yields in Taraxacum kok-saghyz

Bates¹,

Mcnulty²,

Amstutz³

et al. 2019

horts

Self Cite

View full text Add to dashboard Cite

show abstract

“…В начале предлагается проведение лиофилизации при температуре -80ºС, затем последовательная сушка в печи при температуре 60ºС и при комнатной температуре. D. Ramirez-Cadavid et al (2017) предлагают разрезать корни кок-сагыза на небольшие куски (2 см) и сушить их в течение 4-7 дней в воздушной печи при температуре 50°С. Благодаря такому способу высушивания, из 752 кг свежих корней получалось 188 кг сухих.…”

Section: технологии экстракции каучука из кок-сагыза для промышленностиunclassified

“…Кроме того, было установлено, что обработка тканей растений кипящей водой вызывает деградацию каучука, что является еще одним доказательством того, что классический щелочной метод экстракции каучука требует альтернативы. Показано, что для более полного разрушения тканей и растворения некаучуковых компонентов один и тот же растительный материал следует обрабатывать ацетоном трижды (Ramirez-Cadavid et al 2017).…”

Section: технологии экстракции каучука из кок-сагыза для промышленностиunclassified

Russian dandelion (<i>Taraxacum kok-saghyz</i> Rodin): rubber extraction methods and prospects for biotechnological methods application

Kuluev

Minchenkov²,

Gumerova

2019

Biotehnologiâ i selekciâ rastenij

View full text Add to dashboard Cite

Natural rubber is a strategic natural raw material, which is used in the production of tires and military equipment, in medicine and other industries. An alternative to Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. and the most promising rubber plant is the Russian dandelion (Taraxacum kok-saghyz Rodin). The rubber that accumulates in the roots of this dandelion is not inferior in quality to the natural rubber from H. brasiliensis, and its content reaches 27% of the dry weight of roots. The purpose of this paper is to describe the economically important components of T. kok-saghyz roots, the main methods for extracting natural rubber from the roots, as well as the approaches to micropropagation and genetic transformation of kok-saghyz and related species. In the middle of the 20th century, the industrial method of isolating rubber from Russian dandelion in the USSR was based on preliminary treatment of the roots with a 2% solution of alkali, which could negatively affect rubber quality. Therefore, it is important to develop new, rapid, but at the same time, inexpensive methods of rubber extraction from T. koksaghyz. Some of them are considered in this paper. The breeding of Russian dandelion should be aimed at both increasing the root size and the content of rubber. In this regard, the development of laboratory express methods for rubber extraction is also important. The authors have developed and optimized a method for extracting rubber from dry plant tissue using polar solvents (water and acetone), with the final extraction with a non‑polar solvent (hexane). The developed rubber extraction protocol showed results comparable to the literature data. In order to create more productive plant forms, experiments are also being conducted on T. kok-saghyz micropropagation and genetic transformation. However, the number of such works is still very small, probably due to the low regenerative abilities of this dandelion species.

show abstract

“…Although rubber-bearing plant species such as Taraxacum kok-saghyz and Parthenium argentatum have lately reemerged on the research and development scene as potential alternative sources of natural rubber (van Beilen and Poirier 2007a, 2007b, Rasutis et al 2015, Kreuzberger et al 2016, Dong et al 2017, Ramirez-Cadavid et al 2017, Soratana et al 2017, the Para rubber tree (Hevea brasiliensis) has retained its status as the sole viable source of natural rubber, which does not seem set to change in the near future (Cornish 2017). Global consumption of natural rubber has exceeded 12 million metric tons in the last three years according to the International Rubber Study Group (IRSG 2017).…”

Section: Introductionmentioning

confidence: 99%

Climate change impact assessment on the potential rubber cultivating area in the Greater Mekong Subregion

Golbon

Cotter

Sauerborn

2018

Environ. Res. Lett.

View full text Add to dashboard Cite

In order to map potential shifts of rubber (Hevea brasiliensis) cultivation as a consequence of the ongoing climate change in the Greater Mekong Subregion (GMS), we applied rule-based classifications to a selection of nine gridded climatic data projections (precipitation and temperature, and global circulation models (GCMs)). These projections were used to form an ensemble model set covering the representative concentration pathways (RCPs) 4.5 and 8.5 of the Fifth Assessment Report of the Intergovernmental Panel on Climate Change at three future time sections: 2030, 2050 and 2070. We used a post classification ensemble formation technique based on a majority outcome of the classification to not only provide an ensemble projection but also to spatially track and weight the disagreements between the classified GCMs. A similar approach was used to form an ensemble model aggregating the involved climatic factors. The level of agreement between the ensemble projections and GCM products was assessed for each climatic factor separately, and also at the aggregate level. Shifting zones with high confidence were clustered based on their land use composition, physiographic attributes and proximity. Following the same ensemble formation technique and by setting a 28• C threshold for annual mean temperature, we mapped areas prone to exposure to potentially excessive heat levels. Almost the entire shift projected with high certainty was in the form of expansion, associated with temperature components of climate and temporally limited to the 2030 time window where the total area conducive to rubber cultivation in the GMS is projected to exceed 50% by 2030 (from 44.3% at the turn of the century). The largest detected cluster (41% of the total shifting area), which also is the most ecologically degraded, corresponds to Northern Vietnam and Guangxi Autonomous Region of China. The area exposed to potentially excessive heat is projected to undergo a 25-fold increase under RCP4.5 by 2030 from 14568 km 2 at the baseline.

show abstract

Taraxacum kok-saghyz (TK): compositional analysis of a feedstock for natural rubber and other bioproducts

Cited by 70 publications

References 69 publications

Planting Density and Growth Cycle Affect Actual and Potential Latex and Rubber Yields in Taraxacum kok-saghyz

Planting Density and Growth Cycle Affect Actual and Potential Latex and Rubber Yields in Taraxacum kok-saghyz

Russian dandelion (<i>Taraxacum kok-saghyz</i> Rodin): rubber extraction methods and prospects for biotechnological methods application

Climate change impact assessment on the potential rubber cultivating area in the Greater Mekong Subregion

Contact Info

Product

Resources

About