High-amylose maize starches

Amyloses of different origins and molecular weights have been extensively studied.151 Results indicate that cereal amyloses are smaller than other amyloses. Amyloses isolated from high-amylose maize starches display substantially smaller molecular weights (average DP 690-740 and chain lengths 215-255).161 There is about an equal... 

The wide range in T0, Tp, Tc and AH among genotypes (Table 16.2) could be attributed to differences in cultivars,39,49,52 growth conditions,49,58 and thermal and mechanical conditions employed during starch isolation.66 DSC parameters of barley starches are generally lower than those reported for normal, waxy and high-amylose maize starches examined under identical conditions.28... 

Early work had indicated that the course of starch pyrolysis is also altered when such simple salts as sodium chloride and sodium carbonate are present. In an attempt to investigate this phenomenon in more detail, Bryce and Greenwood studied the kinetics of the decomposition of amylomaize starch (high-amylose, maize starch) in the presence of two series of salts one having a common cation (NaH2P04, Na2B407, NaCl,... 

Fig. 4 Digital images of solution-cast high-amylose maize starch films prepared under different experimental conditions. Reproduced with permission from Koch et al. (2010). 2013, Elsevier Ltd...

Cristina Freire, A. Fertig, C. C. Podczeck, F. Veiga, F. Sous, J. (2009). Starch -based Coatings for Colon-specific Drug Delivery. Part I The Influence of Heat Treatment on the Physico-chemical Properties of High Amylose Maize Starches. European Journal of Pharmaceutics and Biopharmaceutics, Vol. 72, No. 3, (August 2009), pp. 574-586, ISSN 0191-8141... 

C. Freire, F. Podczeck, F. Veiga, and J. Sousa, Starch-based coatings for colon-specific delivery. Part II Physicochemical properties and in vitro drug release from high amylose maize starch films, Eur J. Pharm. Biopharm. 72 587-594, 2009. 

Amylopectin interacts more effectively with amylose and, thus, generates greater viscosity and gel strength. When the amylose content of the starch increases, the viscosity and gel strength of the starch paste also increase. Amylose alone and high-amylose maize starch, produce strong though films. 

Lima FF, Andrade CT. 2010. Effect of melt processing and ultrasonic treatment on physical properties of high-amylose maize starch. Ultrason Sonochem 17 637-641. 

Shrestha AK, Ng CS, Lopez-Rubio A, Blazek J, Gilbert EP, Gidley MJ. 2010. Enzyme resistance and structural oiganization in extruded high amylose maize starch. Carbohydr Polym 80 699-710. 

Van Soest, J.J.G. and Borger, D.B. (1997) Structure and properties of compression-molded thermoplastic starch materials from normal and high-amylose maize starches. Journal of Applied Polimer Science, 64, 631. 

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