Adding value to secondary streams of corn wet milling industry

CyTA - Journal of Food

Andrea Martínez-Arcos¹  Ana Belén Moldes¹  Xanel Vecino¹ 

[1] Chemical Engineering Department, School of Industrial Engineering - CINTECX, University of Vigo, Vigo, Spai;

关键词: Corn stream;    nutritional supplement;    biosurfactants;    circular economy;    corriente de maíz;    suplemento nutricional;    biosurfactantes;    economía circular;   

DOI  :  10.1080/19476337.2021.1965661

来源: Taylor & Francis

【 摘 要 】

Corn steep liquor (CSL) is spontaneously fermented, mainly by thermophilic Bacillus strains, producing lipopeptide biosurfactants. These biosurfactants can be extracted with ethyl acetate at the same time that an aqueous phase is generated (named CSL-plus). The results showed that the biosurfactant extraction produced a liquor with a reduced content of fats and minor changes in the micronutrients concentration. The decrease in the fatty acid content is due to the extraction of biosurfactants and free fatty acids contained in the biosurfactant extract, composed mainly of C16 and C18 fatty acids. Therefore, it can be concluded that the extraction of biosurfactants gives a nutritional supplement (CSL-plus) with lower content of fats, improving the nutritional properties of CSL and consequently added value is given to the water stream generated. Moreover, it was demonstrated that the biosurfactant extract from CSL could be used to improve the solubilization of chicken broth cubes.

【 授权许可】

CC BY