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Determination of [beta]-glucan molecular weight using SEC with calcofluor detection in cereal extracts
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ABSTRACT
A high-performance size-exclusion chromatography system (HPSEC) was set up with detection based on the specific binding of Calcofluor to [beta]-glucan for determination of amount and molecular weight of [beta]-glucan in different cereal extracts. To calibrate the HPSEC system, a purified [beta]-glucan was fractionated into narrow molecular weight ranges and the average molecular weight was determined before analysis on the HPSEC system. The detector response was similar for [beta]-glucans from oats and barley and appeared to be independent of molecular weight. Four differ-ent methods ...
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Molecular Weight Distribution of [beta]-Glucan in Oat-Based Foods
; ...molecular weight and molecular weight distributions of [beta]-glucan in extracts...large differences in molecular weight distribution for [beta]-glucan in different...and Aman 1991). Molecular weight distribution of [beta]-glucan in extracts...
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Yeast-Leavened Oat Breads with High or Low Molecular Weight [beta]-Glucan Do Not Differ in Their Effects on Blood Concentrations of Lipids, Insulin, or Glucose in Humans1
; ...results suggest that the molecular weight, when [beta]-glucan is consumed in...R&D. Dough for high molecular weight [beta]-glucan oat bran bread...for 10 min. Dough for low molecular weight [beta]-glucan oat bran bread...
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Effect of molecular weight on crystallization and melting of poly(trimethylene terephthalate). 1: Isothermal and dynamic crystallization.
; ...trimethylene terephthalate) as a function of molecular weight was investigated under isothermal...bulk crystallization increased with molecular weight. An Avrami analysis of the isothermal...constant increased with increasing molecular weight. The Avrami exponent, n, approached...
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Immobilized [Me.sub.2]Si([C.sub.5][Me.sub.4])(N-tBu)Ti[Cl.sub.2]/(nBuCp)[.sub.2]Zr[Cl.sub.2] hybrid metallocene catalyst system for the production of poly(ethylene-co-hexene) with pseudo-bimodal molecular weight and inverse comonomer distribution.(Author abstract)
; ...bimodal resin typically refers to a molecular weight distribution having two peaks at different...consists of two main fractions: a low molecular weight fraction affords a material with good...processibility and high rigidity, while a high molecular weight fraction brings a good ...
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Polymer with right molecular weight and distribution.
; ...polymer, which has a sufficiently high molecular weight to be used as an adhesive agent. Previously...from this process has the problems of low molecular weight and wide molecular weight distribution. This has led to problems...
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Select the right hydrocarbon molecular weight correlation
; ...fractions experimentally, molecular weight is one physical characteristic...equations produce a wide range of molecular weight estimates for heavy hydrocarbon...fractions. This article examines molecular weight distribution predictions...
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Ultrafiltered perfluoropolyether lubricant under molecular weight distributin control
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Microencapsulation using polyactic acid. III. Effect of polymer molecular weight on the microcapsule properties
; ...core. Three polymers of different molecular weight were used to prepare different core...increased with increase in polymer molecular weight. Microcapsule size was also found...in core loading with the two high molecular weight polymers, whilst the low molecular...
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High Molecular Weight Poly(ethylene oxide)-Based Drug Delivery Systems: Part I: Hydrogels and Hydrophilic Matrix Systems
; Polyethylene oxide resins are non-ionic, high molecular weight, water-soluble polymers with good...200 to 7 10^sup 6^. Products with a molecular weight less than -25,000 are viscous liquids...from one another depending on their molecular weight. all these grades find official status...
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Shear field induced diffusion and molecular weight fractionation during polymer processing.
; ...the elastic strain energy for high molecular weight, viscoelastic polymers. It has been...gradient field to separate polymers by molecular weight (1). Furthermore, work by Lo and coworkers...unable to see any signs of radial molecular weight fractionation in polydisperse ...
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