Microencapsulación de fitasa de Aspergillus niger para la alimentación animal


Facultad de Ciencias Químicas

QFB José Daniel García García

Abstract: Due to high consume of phosphorus in agriculture and animal feeding, the improvement of techniques to get phosphorus has taken priority. Moreover, grains are the most common components in animal feeding, where phosphorus is usually found as phytates that are unavailable nutrients for monogastric animals. Therefore, phytases research has increased in the latest years to find better production conditions that might affect the cost, reduce production steps or increase yields. Phytases hydrolyze phytate and release the phosphorus allowing the use of this macronutrient. Thermostable phytases have been developed because of the need of stable enzymes in processes that involve high temperatures and different pH conditions similar to the gastric or intestinal conditions where it will be used. Nowadays, the optimization of phytases production is one of the main issues that are looked for through the improving of the culture, the bioreactor, microorganisms, etc. It will enhance the storage availability and will obtain better performance at high temperatures and different pH’s. A stable enzyme can be achieved using additives as maltose, glycerol, casein, polyethylene glycol, etc. In fact, to obtain these thermostable enzymes, genetics has an important role using vectors to insert genes in microorganisms to get more resistant enzymes.

Thesis Daniel García