Starch chemical properties

Starch, chemical properties Starke, chemische Eigenschaften Starch, Composition StMrke, Zusammen-setzung... 

Starch, chemical properties amidon/f6cule proprietes chimiques... 

The very different geometry of the ether linkages in starch and cellulose causes these two polymers to have different chemical properties. 

Obtaining Different Properties in the Starch. One method of obtaining a starch with different properties is the biological method of using a different type of plant. The best example of this is waxy maize, which yields a starch that is nearly pure amylopectin. The other method is to chemically modify the starch. Chemically modified starch is normally declared as modified starch . A whole range of modified starches are available. There is of course no bar to chemically modifying a starch from a special source. 

Kaur, L. (2004). Physico-chemical properties of potatoes in relation to thermal and functional properties of their starches. PhD dissertation, Guru Nanak Dev University, Amritsar. 

Table 10.2 Physico-chemical properties of starches from different botanical sources... 

Physico-chemical properties of derivatized potato starch... 

Flipse, E., Keetels, C. J. A. M., Jacobson, E., Visser, R. G. F. (1996). The dosage effect of the wildtype GBSS allele is linear for GBSS activity, but not for amylose content absence of amylose has a distinct influence on thew physico-chemical properties of starch. Theor. Appl. Genetics, 92, 121-127. 

Hoover, R. (2001). Composition, molecular structure, and physico-chemical properties of tuber and root starches a review. Carbohydr. Polym., 45, 255-261. 

Lewandowicz, G., Jankowski, T, Fornal, J. (2000). Effect of microwave radiation on physico-chemical properties and structure of cereal starches. Carbohydr. Polym., 42,193-199. 

Sahai, D., Jackson, D. S. (1996). Structural and chemical properties of native corn starch granules. Starch, 48, 249-255. 

Wang, L., Wang, Y. J. (2001). Structures and physico-chemical properties of acid-thinned corn, potato and rice starches. Starch, 53, 570-576. 

Wiesenborn, D. P, Orr, P. H., Casper, H. H., Tacke, B. K. (1994). Potato starch paste behaviour as related to some physical/chemical properties. J. FoodScL, 59, 644-648. 

Before passing to the consideration of the chemical properties of starch it may be well to give, in addition... 

Malleshi, N. G., Desikachar, H. S. R., and Tharanathan, R. N. (1986c). Physico-chemical properties of native and malted finger millet, pearl millet and foxtail millet starches. Starch 6, 202-205. 

Microwave food products are rarely as simple as the water and oil systems discussed above and caution must be exercised in predicting the reaction of individual flavor components in complex food systems containing salt, proteins, sugars, starches, and other food ingredients. Liquid products quickly dissipate the microwave energy and result in a more uniform product. Solid food products, multiphase systems, or frozen products develop hot spots during heating which further complicate flavor delivery in these systems. Performance of the flavor in the microwave is dependent not only on the physical/chemical properties of individual flavor components, but more importantly, on the Interaction of these components with complex food systems. 

Weinhold, B J., Gish, TJ. (1994) Chemical properties influencing rate of release of starch encapsulated herbicides Implications for modifying environmental fate. Chemosphere 28(5), 1035-1046. 

As a native starch, lipids and protein residuals are significantly lower than they are in many other commercial starches. These properties of tapioca starch have been utilized in many industries and further enhanced by means of physical and/or chemical modifications which give close control of its properties to fit the needs of customers in process and product applications. However, tapioca starch is regarded as a specialty starch outside of its local production area. 

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