): Study on enzymatic hydrolysis conditions for the preparation of dual rennin and ACE inhibitory peptide from peach kernelprotein isolate . Journal of Shanxi University of Science & Technology . 33 , 116 – 120 . (in Chinese)
The effect of time of nitrogen application and position of kernels in spike on kernel weight, protein content, β-amylase activity and β-glucan content were examined in two cultivars of barley. Cultivar 92-11 produced significantly bold kernels and lower β-glucan content with slightly lower protein content and higher β-amylase activity than cultivar Xiumei 3. Time of nitrogen application significantly influenced the quality parameters studied. Application of 110 kg N/ha at tillering produced significantly higher kernel weight and significantly lower protein content as well as β-glucan content as compared to its application made at boot stage. β-Amylase activity was also lowest in case of nitrogen applied at tillering stage. There were significant differences between two cultivars for quality parameters when kernels were selected from different spike positions or where specific plant part was removed at heading. The highest 1000-kernel weight was recorded in 92-11 (52.5%) with removal of side tillers and in Xiumei 3 (42.2%) from the middle portion of spike; whereas for protein content, opposite trend was obtained. β-Amylase activity in both cultivars was the highest when middle portion of spike was removed. The lowest β-glucan contents in 92-11 and Xiumei 3 were registered with removal of flag leaf and in Xiumei 3 with the removal of middle portion of spike.
In a long-term mineral fertilisation experiment with 64 treatments representing all possible combinations of four rates each of N, P and K, set up on chernozem meadow soil in Szarvas in 1989, the protein and oil contents and the amino acid and fatty acid compositions of the maize grain yield were analysed between 1997 and 2004.The protein content of the maize kernels increased by 1.1–1.5 percentage points up to a NO
-N level of 80–100 kg ha
in the 0–60 cm soil layer prior to sowing. The year had a greater influence on the protein content than the N supplies. No consistent effect of N on the amino acid composition, detectable as a change in the ratio of any amino acid in the majority of experimental years, was observed. In the AL-P
range of 120–362 mg kg
in the ploughed layer, the soil P supplies had no statistically significant effect on the kernel protein content. In most years the P supplies had little effect on the amino acid composition of the protein. The oil content and fatty acid composition of maize kernels was extremely stable, and was very little affected by the nutrient supplies or the year. During the experimental period excessive N supplies were only found to reduce the oil content and modify the fatty acid composition on one occasion. The oil content and fatty acid composition were not substantially affected by the P supplies.
Authors:V. Greveniotis, O. Xanthopoulou, E. Pessios, P. Deligeorgidis, D. Stefanis, and C. Ipsilandis
Preliminary environment evaluation based on maize data from Randomized Complete Block designs conducted in Florina and Thessaloniki, allowed the comparative analysis of newer and older Greek barley varieties. Yield measurements were followed by additional measurements of field characteristics that involved plant height in March, total plant height at maturity, vegetative period in days, susceptibility to lodging, kernel protein (%), 1000-kernel weight, number of tillers, number of kernels per ear and length of ear. Yield was additionally analyzed in components according to honeycomb methodology that depict yielding performance per se, resistance to stresses and responsiveness to inputs. According to honeycomb methodology, differences found between barley varieties studied are more reliable and breeders can depend on these findings to define the use of each variety according to differences in yield components. The yielding performance of newer barley varieties depends on the number of fertile tillers that contributes to higher individual plant yield and additionally, to high tolerance or resistance to various stresses and high responsiveness to inputs. Newer varieties Persefoni and Demetra exhibited great and stable yielding performance and high productivity dynamic that overyielded all other varieties, while Thermi although an old variety, proved to be a very good genetic material with satisfactory characteristics and yielding performance.
sorghum kernelproteins reveals higher prolamin contents than the conventional method. Cereal Chem. , 72, 583-588.
Efficient procedure for extracting maize and sorghum kernelproteins reveals higher prolamin contents than the
): Two-dimensional electrophoretic analysis of kernelproteins of triticale and their parental durum wheats and ryes. Cereal Chem. , 63, 116-123.
Two-dimensional electrophoretic analysis of kernelproteins of triticale and their