Potato Research Institute Ltd., Dobrovského 2366, Havlíčkův Brod 580 01, Czech Republic.
Food Chem. 2013 Dec 15;141(4):3872-80. doi: 10.1016/j.foodchem.2013.06.080. Epub 2013 Jun 28.
In recent time the interest of industry increases particularly in processing and use of potato high amylopectin (AMP) starches. Therefore the plant breeders effort to obtain "waxy" potato cultivars with low amylose (AMS) content. In this four-year study sixteen potato cultivars grown on five experimental locations were evaluated on the percentage of AMS/AMP by enzymatic method, starch content by the underwater weight method, phosphorus (P) content in starch digests spectrophotometrically, and starch granule size determined by laser diffraction method. Between enzymatic and iodine-potassium iodide method good correlation has been revealed (r=0.71). The correlation analysis between AMS and P levels showed a clear negative correlation. For all measured parameters (starch, AMS, P, starch granule size) significant impact of cultivar has been determined. Location and year have lower, but significant impact. No statistically significant effect of year on AMS has been found. The cultivar Amado distinguished with the highest AMP and P contents and the cultivar Westamyl showed all positive values interesting for growers and processors.
近年来，工业界对加工和使用高直链淀粉（AMP）马铃薯淀粉的兴趣日益浓厚。因此，植物育种者努力获得“蜡质”马铃薯品种，其直链淀粉（AMS）含量低。在这项为期四年的研究中，在五个实验地点种植的 16 个马铃薯品种，通过酶法测定 AMS/AMP 的百分比、水下称重法测定淀粉含量、比色法测定淀粉消化物中的磷（P）含量以及激光衍射法测定淀粉颗粒大小。结果表明，酶法与碘-碘化钾法之间具有良好的相关性（r=0.71）。AMS 与 P 水平之间的相关分析显示出明显的负相关。所有测定的参数（淀粉、AMS、P、淀粉颗粒大小）均受品种的显著影响。地点和年份的影响较小，但具有统计学意义。年份对 AMS 没有统计学上的显著影响。品种 Amado 以最高的 AMP 和 P 含量为特征，而品种 Westamyl 则表现出所有对种植者和加工者都有意义的正数值。
