naa a22 4500 510726712 CHVBK 20180411082938.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11947-011-0771-8 doi (NATIONALLICENCE)springer-10.1007/s11947-011-0771-8 Rheological Studies During Submerged Citric Acid Fermentation by Aspergillus niger in Stirred Fermentor Using Apple Pomace Ultrafiltration Sludge [Elektronische Daten] [Gurpreet Dhillon, Satinder Brar, Surinder Kaur, Mausam Verma] Rheological profile studies for apple pomace ultrafiltration sludge (APS) broth with filamentous fungus, Aspergillus niger NRRL-567 during citric acid (CA) fermentation are reported for the biomass developed in a 7.5l bench scale fermentor. CA bioproduction of 23.67 ± 1.0g/l APS and 40.34 ± 1.98g/l APS was obtained in control (120h) and in treatment with inducer, MeOH 3% (v/v), respectively, after 132h of fermentation by A. niger NRRL 567. The rheological properties of the fermentation broth including pellets were analyzed. The control demonstrated non-Newtonian pseudoplastic behaviour due to more filamentous growth. However, in treatment supplemented with inducer (methanol), pellet form was observed during fermentation with less viscous non-Newtonian broths. The power law model was followed with good confidence of fit (77.8-88.9%) throughout the fermentation in treatment with MeOH as an inducer. However, power law was followed with moderate fit of confidence (65.3-75.9%) at the beginning of fermentation until 48h and later followed a good confidence of fit (75.9-88.2%) until 144h of fermentation in control. Important rheological changes occurred in the broth during maximal CA production phase along with increase in biomass in the pelleted mycelium form. Springer Science+Business Media, LLC, 2012 Apple pomace ultrafiltration sludge nationallicence Aspergillus niger nationallicence Non-Newtonian behaviour nationallicence Rheology nationallicence Submerged fermentation nationallicence Dhillon Gurpreet INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut Brar Satinder INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut Kaur Surinder INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut Verma Mausam Institut de Recherche et de Développement en Agroenvironnement Inc. (IRDA), 2700 rue Einstein, G1P 3W8, Québec, QC, Canada aut Food and Bioprocess Technology Springer-Verlag 6/5(2013-05-01), 1240-1250 1935-5130 6:5<1240 2013 6 11947 https://doi.org/10.1007/s11947-011-0771-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11947-011-0771-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dhillon Gurpreet INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut NATIONALLICENCE 700 1- Brar Satinder INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut NATIONALLICENCE 700 1- Kaur Surinder INRS-ETE, Université du Québec, 490, Rue de la Couronne, G1K 9A9, Québec, Canada aut NATIONALLICENCE 700 1- Verma Mausam Institut de Recherche et de Développement en Agroenvironnement Inc. (IRDA), 2700 rue Einstein, G1P 3W8, Québec, QC, Canada aut NATIONALLICENCE 773 0- Food and Bioprocess Technology Springer-Verlag 6/5(2013-05-01), 1240-1250 1935-5130 6:5<1240 2013 6 11947 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer