Abstract
The dextran molecular mass distribution profile in 77 sugar samples from Brazil and twelve insoluble deposits (alcoholic flocks) samples from sugared cachaças (Brazilian sugar cane spirit) is described in terms of number-average molecular mass M n , weight-average molecular mass M w , Z-average molecular mass M z , and polydispersity. The analyses were performed by size-exclusion chromatography, using a refractive index detector. In most of the sugar samples, it was possible to identify two major groups of dextrans with M w averages of 5 × 10 6 and 5 × 10 4 Da. Based on the evaluated parameters, the dextran distribution profile is about the same in samples analyzed over five seasons, and, therefore, it is likely that the Brazilian product pattern will not change very much over the years. In insoluble deposits from sugared cachaças, dextrans with M w values in the order of the 10 5 Da were the most frequent ones, being present in 58% of the samples.
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