ALGINATES AND THEIR APPLICATIONS IN ENGINEERING: APPLICATION TO THE CONSTRUCTION OF A BIOMATERIAL

  • DJEBRI Nassima Faculté des Sciences et de la Technologie, Université de Bordj Bou Arreridj, El Annasser, 34000 Bordj Bou Arreridj, Algérie
  • BOUKHALFA Nadia Laboratoire de Génie des Procédés Chimiques (LGPC), Faculté de Technologie, Université Ferhat Abbas Sétif-1, 19000 Sétif, Algérie
  • BOUTAHALA Mokhtar Laboratoire de Génie des Procédés Chimiques (LGPC), Faculté de Technologie, Université Ferhat Abbas Sétif-1, 19000 Sétif, Algérie
Keywords: Natural substances, alginate, biomaterial, extraction, brown algae

Abstract

Alginates, saccharidic polymers extracted mainly from brown algae of the class of Phaeophyceae, are substances very little known to the general public. Depending on the seaweed used and the desired products, several techniques are possible. To recover sodium alginate, there are two techniques: - 1st technique: passing through alginic acid, - 2nd technique: passing through calcium alginate Alginates find applications in many fields and industries. They are used in the textile, food, pharmacy, printing, ... but all these industries find a common property: the ability to gel this natural product, an origin that is currently very well perceived in our society. Their uses are based on their gelling properties which result in a chelation of divalent cations by monosaccharides, and mainly by guluronic acid, the most commonly used divalent cation being calcium. Finally, technologies such as microencapsulation employ alginate to modify the kinetics of release of the encapsulated active ingredient (s). In the present study, alginate being biocompatible, non-toxic and non-immunogenic, it is a good component for producing a biomaterial. It is within this framework that the experimental part of this study has been carried out, which is part of the theme of the encapsulation of different materials and its use for the protection of the environment. In this

LES ALGINATES ET LEURS APPLICATIONS EN INGENIERIE: APPLICATION A LA CONSTRUCTION D’UN BIOMATERIAU
Published
2018-12-27