ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Variations of the levels of alpha -amylase and endogenous alpha -amylase inhibitor in rye and triticale grain.

Masojc, P.; Larsson-Raznikiewicz, M.;

Swedish Journal of Agricultural Research Year: 1991 Vol: 21 Issue: 1 Pages: 3-9 Ref: 18 ref.

1991

บทคัดย่อ

Relative levels of alpha -amylase and alpha -amylase inhibitor were determined in flour samples of 29 cultivars and 6 wild species of rye and 27 triticale cultivars, and in individual kernels of rye cv. Dankowskie Zlote, using gel diffusion and colorimetric techniques. The mean levels of alpha -amylase and of alpha -amylase inhibitor were greater in triticale than in rye. Both rye and triticale showed much larger variation in the level of alpha -amylase than of alpha -amylase inhibitor. On the other hand, the variation range of both these parameters was wider in the rye than in the triticale samples. The correlation coefficient, ra-i, between the levels of enzyme and inhibitor was -0.03 and 0.6 in flour samples of rye and triticale, respectively, and -0.08 in individual rye kernels. These results suggest that alpha -amylase production and inhibitor synthesis in cereal grain are 2 independent processes, possibly under different genetic control. The combination of low potential of pre-harvest production of alpha -amylase and high level of the inhibitor in a single variety might contribute to minimizing sprouting damage in the grain.