Tlic rcclncing po\vcrs of the stnrcli frnctions froin gronnd \vhent stnrcli inclicntu tlint fnr-rcncliing clc~~olyiiierisotioii of tho stnrcli miic~ronioleciile Iins tnkcn plncc clnring grinding in n bid1 niill ; tho niolec\*nlnr \vciglits of the frnetinns liiivc been cnlcnlutecl froni the rcchieing
The fractionation of potato starch part II. The reducing powers, mean molecular weights and solubilities of the fractions
β Scribed by Lampitt, L. H. ;Fuller, C. H. F. ;Goldenberg, N.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1948
- Weight
- 328 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0368-4075
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β¦ Synopsis
Abstract
The reducing powers of the fractions from ground potato starch and the mean molecular weights calculated from them show that, as in the case of wheat starch, grinding in a ball mill causes very considerable depolymerization. This process takes place more rapidly with potato starch than with wheat starch. In contrast to wheat starch, the differences in solubility between the dried potato starch fractions are explainable by the differences in the mean molecular weights of the fractions.
π SIMILAR VOLUMES
## Abstract The retrograding properties of the C.W. Sol. and H.W. Sol. fractionsAs previously, 2, 3, 4, 5, 6 these fractions me defined as follows: C.W. Sol.βββMaterial soluble in cold water (room temperature). of potato starch have been investigated under varying conditions of temperature and con
## Abstract Most of the phosphorus of potato starch fractions is bound to the starch and is not split off when the starch is precipitated from solution by alcohol. The potato starch amylopectin contains much more phosphorus in the form of bound esterified phosphate groups than the corresponding amy
## Abstract The viscosities of relatively dilute solutions of the C.W. Sol. and H.W. Sol, fractions obtained from potato starch ground in a ball mill and also from the unground starch are higher than those of the corresponding wheat starch fractions. In particular, those of the H.W. Sol. potato sta
## Abstract The grinding of potato starch in a ball mill breaks up the granules, and the starch is rapidly converted to a form entirely soluble in cold water j the two changes proceed at a much greater rate with potato starch than with wheat starch.
## Abstract The absorption spectra given by the starchβiodine complexes of the potato starch fractions are qualitatively very similar to those previously observed for the wheat starch fractions. The earlier C.W. Sol. Potato starch fractions are richer in amylose but poorer in amylopectin than the c