Activity of rubber transferase and rubber particle size in Hevea latex


Citation

Ohya Norimasa, . and Yasuyukitanaka, . and Witttsuwannakul, . and Koyama Tanetoshi, . Activity of rubber transferase and rubber particle size in Hevea latex. pp. 214-221. ISSN 1511-1768

Abstract

Rubber particles in fresh latex of Hevea brasiliensis showed a bimodal distribution with a mean diameter of 1.07 /m. The fractions containing small particles had much higher rubber transferase activity than those composed of bigger ones. The maximum incorporation of isopentenyl diphosphate went up to as high as ca. 20. On the other hand the fractions consisting of bigger rubber particles exhibited a small enzyme activity. The quantity of ester group linked to rubber molecules was about 2.4 mol/rubber chain for the biggest rubber particles while the small rubber particles had almost no ester group. The small rubber particles are presumed to be composed of linear-polymers having an active diphosphate group.


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Abstract

Rubber particles in fresh latex of Hevea brasiliensis showed a bimodal distribution with a mean diameter of 1.07 /m. The fractions containing small particles had much higher rubber transferase activity than those composed of bigger ones. The maximum incorporation of isopentenyl diphosphate went up to as high as ca. 20. On the other hand the fractions consisting of bigger rubber particles exhibited a small enzyme activity. The quantity of ester group linked to rubber molecules was about 2.4 mol/rubber chain for the biggest rubber particles while the small rubber particles had almost no ester group. The small rubber particles are presumed to be composed of linear-polymers having an active diphosphate group.

Additional Metadata

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Item Type: Article
AGROVOC Term: Rubber
AGROVOC Term: Transferases
AGROVOC Term: Particle size
AGROVOC Term: Hevea brasiliensis
AGROVOC Term: Latex
AGROVOC Term: Enzyme activity
AGROVOC Term: Esters
AGROVOC Term: Polymers
AGROVOC Term: Biosynthesis
AGROVOC Term: Parthenium argentatum
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:28
URI: http://webagris.upm.edu.my/id/eprint/23222

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