Starch characterization of ZP maize genotypes
2006
Milasinovic, M.(Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia)) | Radosavljevic, M.(Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia)) | Jakovljevic, J.(Tehnoloski fakultet, Novi Sad (Serbia)) | Dokic, Lj.(Tehnoloski fakultet, Novi Sad (Serbia))
Chemical (amylose and amylopectin content) and functional (rheological) properties of starch from six different ZP maize genotypes were determined. Results of technological characteristics of the selected genotypes in wet-milling (starch yield, recovery and purity) are presented too. Obtained results show that the starch yield of the selected genotypes ranged from 62.2% in ZP Rumenka to 69.8% in ZP 808, which corresponded to starch recovery in the amount of 92.4% and 95.2%, respectively. The protein content as an important quality factor and a purity indicator of isolated straches was very low (0.13-0.25%). The starches from genotypes ZP 341, ZP 434, ZP 578, ZP 808, ZP Rumenka approximately contained 24% of amylose and 76% of amylopectin, and the waxy hybrid ZP 704(wx) contained the starch composed of 1% of amylose and 99% of amylopectin. Furthermore, differences in rheological characteristics of these starches were found too. The maximum viscosity of starch paste ranged from 830BJ in normal starch in the genotype ZP 578 to 1210BJ in waxy starch in the genotype ZP 704(wx).
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