Maize starch granules

Kerr181 has suggested that treatment of maize starch granules with 0.1 to 0.15 N sulfuric acid results in preferential degradation of the amylopectin,... 

Cheetham, N. W.H. and Tao, L. (1998). Variation in crystalline type with amylose content in maize starch granules X-ray powder diffraction study. Carbohydrate Polymers. 36, 277-284. 

Putaux, J. -L., Molina-Boisseau, S., Momaur, T., Dufresne, A. (2003). Platelet nanocrystals resulting from the disruption of waxy maize starch granules by acid hydrolysis. Biomacromol, 4,1198-1202. 

Figure 10.9 Effects of acetylation on the granule morphology of maize and potato starches, (a) Native maize starch granules, (b) Acetylated maize starch granules, (c) Native potato starch granules, (d) Acetylated potato starch granules (Singh et al., 2004a).

Figure 5.14 Transmission electron micrograph ofwaxy maize starch granule after a-hydrolysis showing internal canal of corrosion. In the outer shell diameter, the size of the thin canalicles is about 25 nm. (Gallant, unpublished)...

Figure 5.21 Scanning electron micrographs of maize starch granules after ot-amylolysis showing resistant shells composed of blocklet-like structures (a) at internal canal of corrosion level and (b) at shells level. (Gallant, unpublished)...

Figure 6.2 Morphological evolution of maize starch granules in floury endosperms of normal maize (A76) and high-amylose maize (A62 and A36) during maturation from the fifteenth to the 72nd day after anthesis, as seen under polarized light. Note that the filamentous starch granules of the high-amylose maize show Maltese crosses only in some nucleations. Percentages are amylose contents during maturation.14...

Recent studies have shown that pores on maize starch granules develop during a late maturation stage, i.e. 30 days after pollination (DAP).39 Starch granules isolated from maize kernels harvested on 30 DAP show few or no pores, whereas those from kernels harvested on 45 DAP (fully matured and dried in the field) show a large number of pores.39 Heavily pitted starch granules are observed close to the germ of maize kernels in a dormant state.40... 

Figure 6.4 (a) Scanning electron micrograph (SEM) of a remaining normal maize starch granule after 84% starch has... 

Attempts to elute or solubilize the activity had met with little success until Macdonald and Preiss (1983, 1985) incubated ground maize starch granules with a-amylase and glucoamylase. The solubilized starch synthase activity was chromatographed on an anion exchange column and two peaks of activity were obtained, with 80% of the activity residing with starch synthase I, which eluted from the DEAE-cellulose column at a lower salt concentration than the starch synthase II fraction. 

StNs and chitin nanowhiskers have also been reported to produce PCL bionanocomposites with improved properties [296,298, 315]. For example, Habibi and Dufresne [316] prepared cellulose and StNs obtained from the acid hydrolysis of ramie fibers and waxy maize starch granules, respectively, which were subjected to... 

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