En el presente proyecto de tesis doctoral se estudió el efecto antifúngico de soluciones y películas de quitosano sobre el crecimiento de hongos filamentosos como Aspergillus niger y Penicillium chrysogenum. En este documento se muestra información acerca de la importancia del quitosano como polímero natural, así como también de sus...
Liposomes based on soy lecithin-cholesterol and phosphatidylcholine-cholesterol, respectively, as well as the use of chitosan as a coating material for chitosomes formation, was formulated as an encapsulation mechanism. Curcumin was encapsulated at different concentrations (1, 5, 10 and 15%, w/w). Some of their physicochemical properties were analyzed: pH, potential ,...
En el presente trabajo se evaluó de la capacidad de adsorción de una mezcla de quitosano (Ch) y poli-épsilon-caprolactona (PCL) como matriz para la remoción de cobre en aguas residuales utilizando aguas modelo, para ello se caracterizaron 3 tipos de quitinas desacetiladas a tres tiempos (1, 2 y 3.5 h),...
The chitin preparation was carried out with a previous treatment of the shrimp waste with lactic acid bacteria and followed by enzymatic deproteinization in order to complete fully biological purification. This process is an alternative to chemical treatments and can obtain products that are not damaged in its molecular structure...
In this work, chitosan cross-linked cellulose fibers were prepared using non-toxic and eco-friendly procedures in order to confer antimicrobial properties to cellulose fibers. Initially, commercial chitosans and chitooligosaccharides were physico-chemically characterized and the latter were tested by assays in vitro. Chitosan was selected based on molecular weight and acetylation degree....
Chitin is a biodegradable biopolymer that can be obtained from shrimp wastes employing thermochemical and biological methods. The latter are emerging as a green, cleaner, eco- friendly, and economical process. In this regard, lactic acid fermentations (LAF) of shrimp wastes (Litopeneus vannamei) were carried out with starters of lactic acid...
Currently, there is a growing interest in sustainable polymers particularly in basic applications such as packaging, edible films and coatings which biodegrade under controlled conditions of storage in order to alleviate the growing global synthetic materials waste problem. In this regard, the chitosan and its derivatives have demonstrated great potential...
The development of edible coatings based on biopolymers has been applied for resh fruit and vegetable products, therefore it is of great interest on the quest of materials with null toxicity, biodegradable and biocompatible, whose objective is increasing the storage life preserving the quality characteristics. In this regard, Chitosan (CS)...
La quitina y el quitosano (obtenido por la desacetilación de la quitina), son biopolímero s extraídos de desperdicios de crustáceos que cuentan con distintas aplicaciones, como médicas y farmacéuticas, entre otras. La quitina se extrae comúnmente mediante el uso de químicos para eliminar los minerales y proteínas que se encuentran...
