Glucose ultrafiltration

Index Entries Saccharification corn stover cellulase glucose ultrafiltration vacuum filtration. 

MEMBRANE-BASED SEPARATIONS APPLIED TO IN VIVO GLUCOSE SENSING— MICRODIALYSIS AND ULTRAFILTRATION SAMPLING... 

Janie EM, Clark T, Ash SR. Use of an ultrafiltrate sampling probe to control glucose levels in a diabeteic cat case study. Current Separations 1992, 11, 3-6. 

Tiessen RG, Kaptein WA, Venema K, Korf J. Slow ultrafiltration for continuous in vivo sampling applications for glucose and lactate in man. Analytica Chimica Acta 1999,379, 327-335. 

Kaptein WA, Zwaagstra JJ, Venema K, Korf J. Continuous ultraslow microdialysis and ultrafiltration for subcutaneous sampling as demonstrated by glucose and lactate measurements in rats. Analytical Chemistry 1998, 70, 4696-4700. 

The production of substances that preserve the food from contamination or from oxidation is another important field of membrane bioreactor. For example, the production of high amounts of propionic acid, commonly used as antifungal substance, was carried out by a continuous stirred-tank reactor associated with ultrafiltration cell recycle and a nanofiltration membrane [51] or the production of gluconic acid by the use of glucose oxidase in a bioreactor using P E S membranes [52]. Lactic acid is widely used as an acidulant, flavor additive, and preservative in the food, pharmaceutical, leather, and textile industries. As an intermediate product in mammalian metabolism, L( +) lactic acid is more important in the food industry than the D(—) isomer. The performance of an improved fermentation system, that is, a membrane cell-recycle bioreactors MCRB was studied [53, 54], the maximum productivity of 31.5 g/Lh was recorded, 10 times greater than the counterpart of the batch-fed fermentation [54]. 

Fig. 1. Glucose concentration over time for semibatch saccharification experiments at 15% (w/w) initial insoluble solids concentration and 20 FPU/g of cellulose enzyme loading. Filtration was applied at two different times to remove glucose (vertical dashed lines). VF Only vacuum filtration was applied alone VF+UF ultrafiltration was also applied following vacuum filtration VF, Washed Vacuum filtration was applied and the filter cake was washed with water. Error bars represent averages 1 SD for two repeated experiments.

T. Hofmann, On the preparation of glucose/glycine standard melanoidins and their separation by using dialysis, ultrafiltration and gel permeation chromatography, in Melanoidins in Food and Health, Vol. 2, J. M. Ames (ed), European Communities, Luxembourg, 2001, 11-21. 

International classification C12P19/14, C13K11/00, C12P19/00 A method for producing high-fructose syrup from Jerusalem artichoke tubers is disclosed. Inulin is extracted in water and subject to enzymatic hydrolyses to fructose and glucose. The sugars are separated, ultrafiltrated, and evaporated. The fructose syrup (at least 90% dry wt) can be mixed with fructose com syrup in food applications. 

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