In this work, different bioactive compounds were obtained from Calendula officinalis by using conventional soxhlet extraction, shaker-assisted extraction and ultrasound-assisted extraction. The effect of different extraction time and temperature on the quantity of bioactive compounds obtained was investigated. The extracts obtained were further analyzed by UV–visible spectrometric analysis. The effect of extraction technique on both the colorant power of carotenoids and antibacterial capacity of the flavonoids was evaluate. Colorant power was evaluated by UV–visible spectrometric and dyeing ability in dairy product. Antibacterial activity of extracts was developed against Escherichia coli and Salmonella typhimurium by diffusion technique in well. Outstanding extraction results were obtained by ultrasound extraction technique performed during 2 hours, at 30°C and with 96% ethanol, for bioactive compounds evaluated. The same treatment showed the best result in colorant power and dyeing ability. The extracts obtained by ultrasound had a slightly inhibitory effect of growth on E. coli in comparison with the other techniques, while none of the extracts obtained from the different techniques reported a significant inhibition on the growth of S. Typhi. Therefore, ultrasound-assisted extraction is considered as an alternative process for obtaining the bioactive compounds from C. officinalis with high concentration, colorant power and antibacterial activity.
En la presente revisión se hace una búsqueda, análisis y recopilación de información de carácter científico, tecnológico y comercial en el tema de vertimientos líquidos en industrias de alimentos. Se definieron palabras claves y restricciones pertinentes, se revisaron alrededor de 40 artículos científicos y 20 patentes que cumplían con los criterios de búsqueda. Los resultados indican que el proceso más usado para el tratamiento de residuos líquidos es mediante su deshidratación y tratamiento en plantas de aguas residuales, sin embargo, debido a su composición es relevante implementar economía circular y usar dichos subproductos como materia prima para la producción de jarabes con alto contenido de azúcar, producción de alcoholes, enzimas, biopolímeros entre otros. El análisis cienciométrico indica que España y Estados Unidos son pioneros en las investigaciones y patentes en el tema mientras Colombia no presenta publicaciones entre 2008 y 2018
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