Determination of molecular mass distribution of oligobutenes by turbidimetric titration

1979 ◽  
Vol 15 (6) ◽  
pp. 435-440
Author(s):  
Ya. E. Garun ◽  
M. I. Lobskii
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Turbidimetric Titration

New approaches for the determination of dextran in the sugar production process

2018 ◽  
pp. 138-146 ◽  
Author(s):  
Karin Abraham ◽  
Eckhard Flöter
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Molecular Size ◽  
Mass Variation ◽  
Negative Effects ◽  
New Approaches ◽  
Precise Knowledge ◽  
Enzyme Application

The presence of polysaccharides in cane and beet raw juices causes several negative effects during the sugar manufacture. These are usually mitigated by enzymatic decomposition of dextrans. Such effects not only depend on the content, but also on the molecular mass distribution. This means that the different dextran fractions specifically affect the process. An accurate process control hence requires the most precise knowledge about the existing content and the molecular mass distribution present. A detailed understanding of the specific processing problems and also a targeted enzyme application hence requires the determination of a total dextran content and also its characterization including the differentiation between the different dextran fractions. An accurate analytical tool which equally satisfies industrial applicability is still lacking. To improve on this situation, two new approaches for the determination of dextran were developed and benchmarked against the commonly used and established Haze Method, which is rather inaccurate and also sensitive to molecular mass variation. The two new approaches are both based on polarimetry. These two methods indicate to be superior over the Haze Method with respect two molecular mass variation and hence enable the determination of a broader molecular size range including also low molecular mass dextrans.

Gel permeation chromatography for the determination of the molecular mass distribution of some industrial proteins

1990 ◽  
Vol 509 (1) ◽  
pp. 227-231
Author(s):  
Lidia Warzecha ◽  
Zdzisława Piwowar ◽  
Danuta Bodzek
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Gel Permeation Chromatography ◽  
Gel Permeation

Determination of the relative molecular mass distribution of the ultrafiltration fractionation product of lignosulfonate by advanced polymer chromatography

2018 ◽  
Vol 36 (12) ◽  
pp. 1337 ◽  
Author(s):  
Chen QIAN ◽  
Hongxia FANG ◽  
Qun CAI ◽  
Fang CAI ◽  
Xinyu GAO ◽  
...  
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Relative Molecular Mass ◽  
Fractionation Product

Determination of the molecular mass distribution of synthetic polymers by size-exclusion electrochromatography

2001 ◽  
Vol 924 (1-2) ◽  
pp. 239-249 ◽  
Author(s):  
Feng Ding ◽  
Remco Stol ◽  
Wim Th. Kok ◽  
Hans Poppe
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Synthetic Polymers ◽  
Size Exclusion
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