Consulta: subjectFacets:"Industrial biotechnology"
Registros recuperados: 4
Data/hora: 10/06/2024 18:20:41

Strategy of oxygen transfer coefficient control on the L-erythrulose fermentation by newly isolated Gluconobacter kondonii
Provedor de dados: 69
Autores: Pan,Long; Fang,Ya-kun; Zhou,Pei; Jin,Kui-qi; Gang,Wang; Liu,Yu-peng.
Background: The effect of diverse oxygen transfer coefficient on the L-erythrulose production from meso-erythritol by a newly isolated strain, Gluconobacter kondonii CGMCC8391 was investigated. In order to elucidate the effects of volumetric mass transfer coefficient (K La) on the fermentations, baffled and unbaffled flask cultures, and fed-batch cultures were developed in present work. Results: With the increase of the K La value in the fed-batch culture, L-erythrulose concentration, productivity and yield were significantly improved, while cell growth was not the best in the high K La. Thus, a two-stage oxygen supply control strategy was proposed, aimed at achieving high concentration and high productivity of L-erythrulose. During the first 12 h, Klawas...
Tipo: Journal article
Palavras-chave: K La; Industrial biotechnology; Process control; Production; Tanning agents; Tanning properties; Artificial tanning; Dihydroxypropanone (DHA); Production of L-erythrulose; Meso-erythritol; Biosynthesis of L-erythrulose.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000600004

Maximizing microalgae productivity in a light-limited chemostat
Provedor de dados: 5
Autores: Martinez, Carlos; Bernard, Olivier; Mairet, Francis.
Light supply is one of the most important parameters to be considered for enhancing microalgae growth in photobioreactors (PBR) with artificial light. However, most of the mathematical works do not consider incident light as a parameter to be optimized. In this work based on a simple model of light-limited growth, we determine optimal values for the dilution rate and the incident light intensity in order to maximize the steady-state microalgal surface productivity in a continuous culture. We also show that in optimal conditions there is a minimal initial microalgal concentration (and we give a simple expression to determine it) to guarantee the persistence of the population. Finally, in the context of enhancing microalgae productivity by reducing light...
Tipo: Text
Palavras-chave: Dynamics and control; Industrial biotechnology; Photoinhibition; Biomass productivity; Microalgae; Photoacclimation; Chlorophyll.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00439/55091/56653.pdf

Dynamics and control of a periodically forced microalgae culture
Provedor de dados: 5
Autores: Martínez, Carlos; Mairet, Francis; Martinon, Pierre; Bernard, Olivier.
Microalgae cultivation with wastewater is a promising way of reducing the energetic needs for wastewater treatment and the costs of biofuel production. However, the very turbid medium is not favorable for the development of microalgae. Indeed, light, the key element for photosynthesis, rapidly vanishes along depth due to absorption and scattering. Therefore it is crucial to understand the effects of the depth on turbid cultures. In this work, we study theoretically the long-term behavior of a continuous culture of microalgae exposed to a periodic source of light. By allowing periodic variations of the depth and the hydraulic retention time, we show that the microalgae population is forced to a periodic regime. Finally, we address numerically the problem of...
Tipo: Text
Palavras-chave: Dynamics and control; Industrial biotechnology; Wastewater; Biomass productivity; Microalgae.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61623/65654.pdf

BIOREFINERIES AND BIOBASED PRODUCTS FROM THE CONSUMER'S POINT OF VIEW
Provedor de dados: 31
Autores: Kurka,   Stefan; Menrad,   Klaus.
Paper prepared for presentation at the 13th ICABR International Conference on Agricultural Biotechnology: “The emerging bio-economy” Ravello (Italy), 18th to 20th June 2009
Tipo: Conference Paper or Presentation
Palavras-chave: Industrial biotechnology; Biorefinery; Consumer behaviour; Demand and Price Analysis; M39; R20.
Ano: 2009
URL: http://purl.umn.edu/91330