On-line evaluation of fermentation broth colour

A novel method for evaluating pigment production during fermentation of Monascus ruber has been developed and consists of reflectance measurement with a 10 degree observer under an artificial illuminant. A spectrophotometer was adapted to measure pigmentation during culture in a bioreactor. The ligh...

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Bibliographic Details
Published in:	Biotechnology techniques Vol. 8; no. 5; pp. 319 - 324
Main Authors:	Santerre, A.L, Queinnec, I, Destruhaut, C, Pourciel, J.B, Blanc, P.J
Format:	Journal Article
Language:	English
Published:	London Chapman and Hall 01-05-1994
Subjects:	Biological and medical sciences biosynthesis Biotechnology color fermentation food coloring Fundamental and applied biological sciences. Psychology Methods. Procedures. Technologies Microbial engineering. Fermentation and microbial culture technology Monascus ruber monitoring Pezizales pigments spectroscopy Culture medium Microorganism growth Method Fermentation Fluorescence spectrometry Fungi Bioreactor Production Microorganism culture Pigments Ascomycetes Kinetic parameter Thallophyta
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Summary:	A novel method for evaluating pigment production during fermentation of Monascus ruber has been developed and consists of reflectance measurement with a 10 degree 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.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0951-208X 1573-6784
DOI:	10.1007/BF02428974