Dissertação
Recuperação de proteínas do soro de leite bubalino através da coagulação com quitosana e por processo de separação por membranas
Fecha
2017-02-14Autor
Priscilla Celestino Almeida de Souza
Institución
Resumen
Whey is a co-product produced indirectly in dairy products, from the manufacture of
cheese and casein, and has water, proteins, fats, lactose and minerals in its
composition. Despite its expressive generated volume, some dairy products use whey
as effluent, which, if not treated, can cause environmental problems. Whey from buffalo
milk derivatives is not widespread in Brazil, but because it has a higher dry matter
content when compared to bovine whey, it is interesting for the production of dairy
products. The present work aims to concentrate and produce a powdered material of
buffalo whey, recovering the protein aiming at a product with greater added value and
the consequent reduction of the pollutant value of the effluent from the industry of
derivatives of this milk. To achieve this objective, the concentration process using
chitosan and the membrane separation process using ultrafiltration and diafiltration
and the combination of both processes are evaluated. After evaluation, the best whey
protein recovery process was determined by the membrane separation process, and
the obtained material was spray-dried. Subsequently, the technological properties of
the powdered product were evaluated, such as protein solubility and foaming stability.
Keywords: buffalo whey, proteins, membrane separation process, coagulation and
technological properties.