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On-line evaluation of fermentation broth colour |
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| Authors: | A L Santerre I Queinnec C Destruhaut J B Pourciel P J Blanc |
| Institution: | (1) URA 544, Equipe associée INRA, Centre de Bioingénierie Gilbert DURAND, INSA, 54, av. de Rangueil, F-31077 Toulouse, France;(2) Laboratoire d’Automatique et d’Analyse des Systèmes du CNRS, 1 7, av. du colonel Roche, F-31077 Toulouse, France |
| Abstract: | Summary A novel method for evaluating pigment production during fermentation ofMonascus ruber has been developed and consists of reflectance measurement with a 10° observer under an artificial illuminant. A spectrophotometer was adapted to measure pigmentation during culture in a bioreactor. The lightness parameter L was the most useful information delivered by this sensor. An absorbency over 30 units at 480nm on batch cultures was estimated on-line without dilution. member of the GR Automatique - SARTA - CNRS |
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