Can anyone tell the value of K and a to be used for beta glucan polysaccharide?

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Alan F Rawle

You need a family of similar materials of known molecular mass in order to interpolate for your material. There's a very good but general text posted on ResearchGate before:

https://www.researchgate.net/profile/Steve_Cui2/publication/260401618_Understanding_the_Physical_Properties_of_Food_Polysaccharides/links/55072b060cf26ff55f7bf6d6.pdf

Page 20 of this article gives some hints.

Article Understanding the Physical Properties of Food Polysaccharides

Jan Engmann

See also the article by Kale et al. in "Oats Nutrition and Technology" (Chu, 2014).