Multiphase bioreactors in the food industry: Aroma production

Enhancing isoamyl acetate biosynthesis by Pichia fermentans

“…3B shows that values (quadratic fit, r 2 =0.8602) for the medium with decane were from 5.3 to 12.5 h −1 . This range for k L a values is similar to that reported (2.4 to 13.2 h −1 ) for similar ranges of airflow (0.4 to 1.2 vvm) and agitation speed (150 to 250 rpm) by Palmerín-Carreño et al (2019) using polypropylene glycol 1200 as the organic phase. As would be expected, Fig.…”

“…The growing demand for natural products comes from increasing the consumers' apprehensive attitude towards synthetic compounds (Sánchez-Castañeda et al, 2018). It has led to the development of research related to the study of enzyme technology (Veríssimo et al, 2018) and microorganisms capable of producing aromas by biotransformation of added precursors (Palmerín-Carreño et al, 2019).…”

Intensification of 2-phenylethanol production using an aerated system assisted by a membrane-based solvent extraction technique

“…This behavior could be related to oxygen mass transfer from the gas-phase to the aqueous-phase, determined by the volumetric coefficient of oxygen transfer (k L a), which was larger at higher agitation rates (Castillo-Araiza et al, 2017). A previous study reported k L a values for the same operating conditions used in this study (Palmerín-Carreño et al, 2019). Results showed that maximum k L a values were obtained using 0.8 (24.6 h −1 ) and 1.2 (15.6 h −1 ) vvm at 350 rpm; with the larger the k L a values, the greater the production of 2-PE.…”