Biochemical composition of Hevea brasiliensis latex: A focus on the protein, lipid, carbohydrate and mineral contents
| Autor: | Céline Bottier |
|---|---|
| Přispěvatelé: | Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Rok vydání: | 2020 |
| Předmět: |
Latex
F60 - Physiologie et biochimie végétale Biochimie Hevea latex Raw material 03 medical and health sciences Natural rubber Non-isoprenes Glucide [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology Food science Q60 - Traitement des produits agricoles non alimentaires 030304 developmental biology Saignée chemistry.chemical_classification 0303 health sciences Mineral Lipide biology Latex fractions 030302 biochemistry & molecular biology Biochemical composition Composition chimique Polymer Carbohydrate biology.organism_classification Hevea brasiliensis chemistry visual_art visual_art.visual_art_medium Composition (visual arts) Protéine végétale Hevea |
| Zdroj: | Latex, Laticifers and Their Molecular Components-From Functions to Possible Applications Latex, Laticifers and Their Molecular Components-From Functions to Possible Applications, 93, Elsevier, pp.201-237, 2020, Advances in Botanical Research, ⟨10.1016/bs.abr.2019.11.003⟩ Latex, laticifers and their molecular components: From functions to possible applications |
| Popis: | International audience; The latex collected from the Hevea brasiliensis tree is today the only commercial source of natural rubber (NR), the cis-1,4-polyisoprene polymer, a strategic raw material. The Hevea latex is a very complex material both in its structure and composition. In terms of structure, it is a colloidal dispersion where various micrometric objects, mainly rubber particles and lutoids, are dispersed in the cytoplasmic serum (C-serum). The rubber fraction is the most abundant, followed by the C-serum and the lutoids. In terms of composition, the fresh latex contains about 60% of water, 35% of cis-1,4-polyisoprene and 5% of non-isoprene molecules. These non-isoprenes are biochemical compounds mostly including proteins, lipids, carbohydrates and minerals, and their distribution in the fractions of latex is not homogeneous. Although the non-isoprenes represent a minor part of the latex, some of them are retained in NR after latex processing and recognized to play a crucial role on the NR properties. Actually, the non-isoprene molecules are likely behind the better mechanical properties of NR over its synthetic counterpart, but they are also responsible for the high variability of NR quality. This variability of NR quality is a major drawback in NR industry and is directly linked to the latex composition, which is influenced by various physical and physiological parameters. The biochemical composition of latex matters, and this chapter is thus an overview of the protein, lipid, carbohydrate and mineral contents in latex, as well as their distribution in the three main fractions of latex. |
| Databáze: | OpenAIRE |
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