ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
The mathematical theory of periodate oxidation of unfractionated starches was studied. The degrees of polymerization (DP) of the amylose and amylopectin components of the starch were considered to be unknown, whereas the proportion of amylose in the starch, the repeating chain length of the amylopectin component, and the amount of formic acid evolved on quantitative oxidation were considered to be experimentally ascertainable and thus known. The treatment thus reduces to an approximate solution of one equation with two unknowns. It is shown that certain inequalities are then valid, when the following information can be obtained: (1) the upper and lower DP limits of each component, (2) the extent of degradation of a randomly degraded starch, and (3) the maximum relative errors involved in the determination of the DPs of the components by the periodate method. A numerical example is given to show the application of the method in laboratory practice.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1963.070070434
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