Size distribution of starch

Fig. 1. (a) The TEM image and (b) particle size distribution of starch-capped CdSe nanoparticles at 1 1 precursor molar ratio. 

Figure 10.2 Particle size distribution of starches from some New Zealand potato cultivars (source Singh et al., 2006).

Moon, M. H., and Giddings, J. C. (1993). Rapid separation and measurement of particle size distribution of starch granules by sedimentation/steric field-flow fractionation./. Food Sci. 58 1166-1171. 

Molecular Size Distribution of Starch During Enzymatic Hydrolysis... 

The size distributions of the black sand ranged from 80 to 100 pm. Development test-work on the black sand included an examination of anionic and cationic collectors. Cationic collectors, such as Amine 22, Armac and Armac T, gave poor results. Selectivity was poor, even when using modified starches as gangue depressants. 

Erlander, S. R. (1998a). Starch biosynthesis. I. The size distributions of amylose and amylo-pectin and their relationships to the biosynthesis of starch. Starch/Stdrke. 50,227-240. 

Figure 6. Surface pore size distribution of films containing 50% or 60% granular starch with the balance being LDPE.

An HPLC system, equipped with a Waters solvent delivery system (M-45), two PLgel 20 p,m Mixed-A columns (300 x 7.5 mm) with 20 p,m guard column (50 x 7.5 mm) (Polymer Laboratories, Amherst, MA) and a refractive index detector (model 2410) (Waters, Milford, MA), can be used to study the molecular size and size distribution (e.g. molecular weight and weight distribution) of starch. 

Figure 9 Cumulative particle size distribution of the agglomerates at a fixed normalized amount n (=0.62) of granulating liquid for different ratios of the binary powder mixture lactose/corn starch.

Table 10.6 compares the average size (DPn) and size distributions of six laboratory-purified amyloses and one commercial sample of potato amylose, which were determined by classic colorimetric and fluorescent-labeling techniques using 2-ami-nopyridine. The data by the two techniques are consistent and show that wheat and other cereal amyloses are smaller in size than those from root and tuber starches. The molar distribution technique indicated that wheat amylose contained two molecular species, compared with one for rice and com amyloses.209,210 Moreover, the molar size distributions for the cereal amyloses are much narrower than those of the tuber amyloses, and the cereal amyloses contain a preponderance of molecules of DPn < 1000 whereas the tuber amyloses contain 78-95% of molecules with DPn > 1000, and even 3-5% above DPn 10000. None of the amylose samples in Table 10.6 showed molecules with less than DPn 200, possibly because they had been purified as alcohol-inclusion complexes.209... 

Table 59. The influence of different povidone types in a concentration of 5 % on the particle size distribution of a corn-starch granulate obtained by wet granulation...

Bechtel, D.B. et al.. Size-distribution of wheat starch granules during endosperm development. Cereal Chem., 67, 59, 1990. 

FIG U RE 33.1 Size distribution of typical pharmaceutical products (a) 1, streptomycin sulfate 2, ascorbic acid 3, hydrate of diaceto-2-keto-L-gulonic acid 4, starch 5, talcum (b) 1, sulfanilamide 2, acetylosalicyclic acid 3, sodiump-aminosalicylate 4, codeine + terpin hydrate. (From Golubev, L.G. et al., Drying in Chemicopharmaceutical Industry, Meditsina, Moscow, Russia (in Russian), 1978. With permission.)... 

The study was also extended to CoO nanoparticles [73] employing a sacrificial starch template. This method provided uniform shape and size, and was easy to perform at bulk levels. The size distribution of the nanoparticles was in the range of 15-30 nm, with a crystallite size of 18 nm. The low size and aggregation free character of the nanopaiticles resulted in a NIR reflectance of above 75%, in spite of a black color (where NIR reflectance values are expected to be less than 30%). This provided feasibility for employing CoO nanoparticles as components of cool coatings on leather, automobile surfaces, and so oa... 

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