[RASMB] refractive index increment

[Olwyn Byron]

Hi Faith,

In the following reference

Theisen, A., C. Johann, M. P. Deacon, and S. E. 
Harding. 2000. Refractive Increment Data Book. 
Nottingham: Nottingham University Press.

There is a value for pneumococcal capsule in 
phosphate buffer at 633 nm, 30°C: dn/dc = 
0.130-0.139 ml/g

The original reference is Bednar and Hennessey 
(1993), Carbohydrate Research, vol 243, p 115.

There was nothing, however, for S. aureus 
capsular polysaccharides explicitly, but you 
might be able to come up with a figure from some 
of the data for many other polysaccharides listed 
in the book.  If you know the composition, I 
would be happy to look them up for you.  That 
said, the book does not have data for e.g. 
teichoic acid, N-acetylfucosamine or 
N-acetylgalactosaminouronic acid so I'm not sure 
if it will have data that will be relevant.  In 
any case, I hope this is helpful to you.

Best wishes-
Olwyn Byron

>Hello,
>
>Does anyone know where I could find the 
>refractive index increment for S. aureus 
>capsular polysaccharides?
>
>Thank you,
>Faith Coldren
>
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>RASMB at rasmb.bbri.org
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