Téléchargement | - Voir le manuscrit accepté : Direct fermentation of triticale starch to lactic acid by Rhizopus oryzae (PDF, 753 Kio)
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DOI | Trouver le DOI : https://doi.org/10.1089/ind.2011.7.129 |
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Auteur | Rechercher : Xiao, Zhizhuang1; Rechercher : Wu, Meiqun1; Rechercher : Beauchemin, Manon1; Rechercher : Groleau, Denis1; Rechercher : Lau, Peter C.K.1 |
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Affiliation | - Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
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Format | Texte, Article |
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Sujet | biorefinery; Rhizopus oryzae; triticale; starch platform; lactic acid; calcium carbonatecid, calcium carbonate |
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Résumé | The production of lactic acid from triticale starch was demonstratedfor the first time. Direct fermentation by Rhizopus oryzae in batch modeled to a conversion yield of 0.74 g lactic acid/g starch. Kinetics analysisof the fermentation suggested a multiphase process which consistedof quick hydrolysis of starch, rapid glucose accumulation followedby fast production of lactic acid. In batch fermentation mode, correcttiming and proper dosage of a neutralizing agent (calcium carbonate)were found to be critical factors that affect the organic acid yield.Addition of CaCO3 at the time point when glucose accumulationhad reached its peak (24 h) resulted in the highest lactic acid yield.The best ratio (by weight) of triticale starch to CaCO3 for lactic acidproduction was 1:1. It was important to maintain a pH of about 5during the whole fermentation process. Fermentation carried out inan optimized, commercially available small-scale parallel bioreactor(DASGIP) yielded up to 0.87 g lactic acid/g triticale starch whenR. oryzae spores were directly added to the fermentation medium. Ourfermentation results indicated that triticale starch from this nonfoodcrop is a promising renewable feedstock for production of lactic acid |
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Date de publication | 2011-04-01 |
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Dans | |
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Langue | anglais |
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Publications évaluées par des pairs | Oui |
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Numéro du CNRC | NRCC 53354 |
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Numéro NPARC | 17977076 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | bc39aac0-59d7-48de-8969-d33a0e2021b7 |
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Enregistrement créé | 2011-07-01 |
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Enregistrement modifié | 2020-04-21 |
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