Extractable proteins from field radiation vulcanized natural rubber latex

Parra, D.F.; Martins, Carlos Felipe Pinto; Chirinos, Hugo; Lugão, Ademar B.

doi:10.1016/j.nimb.2005.04.028

Cited by 7 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…La adición de un agente anticoagulante como el amoníaco en el proceso de tapping previene que las bacterias presentes en el panel de sangría acidifiquen el látex, estabilizando la suspensión (Krickl et al, 2017), mientras que el bó-rax presenta la propiedad preservante evitando la descomposición por bacterias del látex (Confederación Cauchera Colombiana, 2015a). El pH comercial del látex preservado se encuentra alrededor de 10.08 con una densidad de 0.98g/cm 3 (Parra et al, 2005), siendo evidente que en el tratamiento T0, testigo, inició la coagulación natural del látex que produce al finalizar el proceso de sangría, fondo de taza o ripio de bajo valor comercial que disminuye la producción al no ser incorporar en procesos como laminado o preservación del lá-tex por afectar su calidad (Riyajan & Santipanusopon, 2010;Tavera et al, 2012;Peláez et al, 2014).…”

Section: Anticoagulación En Campounclassified

Efecto de inclusión de anticoagulantes durante el beneficio de Hevea brasiliensis (Willd. ex A.Juss.) Müll.Arg.

Vargas

Forero

2017

Colomb. for.

View full text Add to dashboard Cite

Section: Anticoagulación En Campounclassified

Efecto de inclusión de anticoagulantes durante el beneficio de Hevea brasiliensis (Willd. ex A.Juss.) Müll.Arg.

Vargas

Forero

2017

Colomb. for.

View full text Add to dashboard Cite

“…The removal of proteins from NRL was successfully achieved by using additives in combination with high-speed centrifugation. The additives used in this study were found to increase the solubility of proteins present in natural latex [38]. Additionally, alkali substances were effective in breaking down the protein matrix and increasing protein solubility [39].…”

Section: Discussionmentioning

confidence: 76%

Deproteinization of Natural Rubber Latex and Its Pale-Colored Thin Films

Suksaeree,

Bumroongrat,

Polraksa

et al. 2023

Sustainability

View full text Add to dashboard Cite

The non-rubber components present in natural rubber latex can contribute to the dark color of dried films and may cause allergic reactions. This project aimed to develop light-color rubber films with minimal protein contamination. Various additives were incorporated, and a leaching procedure was implemented to address this issue. The evaluation focused on protein content, color changes, and swelling properties of thin natural rubber films. Texapon N70 proved effective as both a latex stabilizer and leaching agent, while Uniphen P-23 served as a preservative. The combined use of these additives facilitated the removal of soluble serum through appropriate incubation, leaching, and centrifugation processes. The introduction of additional centrifugation cycles improved deproteinization and color reduction; however, it led to a loss of rubber mass and an increase in manufacturing costs. Increasing the amount of Texapon N70 and introducing alkali potassium hydroxide (KOH) further enhanced the efficiency of deproteinization and color reduction. The optimal conditions determined in this investigation were as follows: 0.5% w/w Texapon N70, 0.5% w/w KOH, 1% w/w Uniphen P-23, a 60-min incubation period, and a single leaching cycle with distilled water. These conditions resulted in a 90.57 ± 1.20% decrease in protein contamination and a color change (ΔE) of 433.69 ± 20.23. This successful condition can be replicated and scaled up for further applications.

show abstract

“…Only a few works applied polymers to extract proteins in rubber latex. A water‐soluble polymer and 60 Co irradiation were used in extracting protein from HANR . In addition, polyethylene glycol (PEG) was investigated as a non‐ionic surfactant for a reduction of EP content without any compromise on the mechanical properties .…”

Section: Introductionmentioning

confidence: 99%

Extraction of protein from skim natural rubber latex using PEG as a surfactant via low speed centrifugation and continuous flow

Danwanichakul

Rattanaphan

Srisatjang

et al. 2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

Protein extractions from skim natural rubber latex using 3 %w/v polyethylene glycol (PEG6000) via both low speed centrifugation and continuous flow were investigated. In centrifugal extraction, when the speed was 1000 rpm, the extractable protein (EP) content in serum increased with processing time from 5 to 30 min and when the time was fixed at 5 min, EP content increased with centrifugal speed. In addition, further washing deproteinized chips with 2 %w/v SDS solution could remove proteins with efficiencies corresponding to the efficiencies of protein removals in latex phase, implying the role of PEG in protein reduction in both steps. In continuous flow extraction, EP content increased with increasing Reynolds number or increasing mean residence time of the flow to a maximum and then dropped. The efficiencies of the centrifugal extraction and continuous flow extraction were 55.2 and 33.7%, respectively.

show abstract

Extractable proteins from field radiation vulcanized natural rubber latex

Cited by 7 publications

References 2 publications

Efecto de inclusión de anticoagulantes durante el beneficio de Hevea brasiliensis (Willd. ex A.Juss.) Müll.Arg.

Efecto de inclusión de anticoagulantes durante el beneficio de Hevea brasiliensis (Willd. ex A.Juss.) Müll.Arg.

Deproteinization of Natural Rubber Latex and Its Pale-Colored Thin Films

Extraction of protein from skim natural rubber latex using PEG as a surfactant via low speed centrifugation and continuous flow

Contact Info

Product

Resources

About