Ensaios para produção de biossurfactantes pela levedura Starmerella bombicola em meio de cultura contendo resíduos agroindustriais

Abstract

The Starmerella Bombicola is a non-pathogenic yeast producing the biosurfactant sophorolipid. The sophorolipid is classified as a promising compound and offers several advantages over chemical surfactants, among them, the specific activity that remains with the temperature variation, low toxicity, biodegradability and can be produced in large quantities. However, the costs for your production are high, so the present study used industrial waste such as cane molasses and the corn steep liquor (CSL) for biosurfactant production and use of different types of vegetable oils and olive mill wastewater (OMW) to assist in the fermentative process to reduce costs of raw material. The results showed that the raw materials analyzed can be used as a substitute of glucose and yeast extract, since there was reduced surface tension and good cell growth both in bioreactor and Erlenmeyer. In addition, the soybean oil also can be used as a helper substance in the production of sophorolipid.