Department of Food Storage and Technology, Wrocław University of Environmental and Life Science, Chełmońskiego 37/41, 51-630 Wrocław, Poland.
Carbohydr Polym. 2013 Apr 15;94(1):193-8. doi: 10.1016/j.carbpol.2013.01.002. Epub 2013 Jan 20.
Acetylated retrograded starch is one of the forms of resistant starch (RS3/4). Apart from the known resistance to amylolysis, it is characterized by the capability to form viscous pastes. Properties of this type of acetates are mainly determined by the degree of substitution and raw material used for esterification. The objective of this study was to produce starch acetates with a degree of substitution DS=0.1 from native potato starch and retrograded potato starch, and to compare selected properties of the resultant preparations. Retrograded starch was produced by freezing pastes with concentrations of 1, 4, 10, 18 or 30 g/100 g. Starch acetates with a degree of substitution DS∼0.1 were produced from native or retrograded starch through acetylation with various doses of acetic acid anhydride (6.5-26.0 cm(3)/100 g of starch). The preparations produced were characterized by various properties. A positive correlation was observed between resistance to amylolysis and the number of acetyl groups at C2 and C3 the produced starch acetates.
乙酰化抗性淀粉是抗性淀粉（RS3/4）的一种形式。除了已知的抗淀粉酶解性外，它还具有形成粘性糊的能力。这种类型的醋酸酯的性质主要取决于取代度和酯化所用的原料。本研究的目的是用天然马铃薯淀粉和回生马铃薯淀粉生产取代度 DS=0.1 的淀粉醋酸酯，并比较所得产物的某些性质。通过将浓度为 1、4、10、18 或 30 g/100 g 的糊冷冻来制备回生淀粉。通过用不同剂量的乙酸酐（6.5-26.0 cm(3)/100 g 淀粉）对天然淀粉或回生淀粉进行乙酰化反应，可得到取代度 DS∼0.1 的淀粉醋酸酯。所制备的产物具有各种性质。在生成的淀粉醋酸酯中，C2 和 C3 处的乙酰基数量与抗淀粉酶解性呈正相关。
