SADRŽAJ ULJA I SIROVIH PROTEINA U PLODOVIMA POPULACIJE ORAHA TIMOČKE KRAJINE

摘要

Nut oil and crude protein contents were analysed in the walnut population in the Timocka Krajina region. Nuts were collected from the same walnut trees in 1989-91 at five localities. Oil content was determined by the NMR method and crude proteins by using the micro Kjeldahl method. The following categories were established on the basis of oil content: kernels with low (up to 50%), medium (50.1-60.0%), high (60.1-70.0%) and very high (over 70.1%) oil content. According to crude proteins content, the fruits were grouped as follows: kernels with low (up to 15%), medium (15.1-20.0%) and high (over 20.1%) contents. The trees with fruits having medium (50.2%) and high (43.6%) kernel oil contents predominate in the population studied. Considerably fewer trees had low or vey high kernel oil contents (5.0% and 1.2% of trees, respectively). Average kernel oil content in the fruit of the walnut population was 59%. The lowest and the highest kernel oil content found in individual trees were 44.0% and 77.5%, respectively. Kernel crude protein content varied from 10.7% to 23.4%. Walnut fruits are characterised by having mean kernel crude protein content in 71.1% trees. Low crude protein content was found in kernels of 24.0% and high in 4.9% of the trees in the population. Average crude protein content in the walnut population was 16.6%. The lowest and the highest crude protein contents found in individual trees were 10.7% and 23.4%, respectively.%Analiziran je sadržaj ulja i sirovih proteina u plodovima populacije oraha Timočke krajine. Rezultati izučavanja ukazuju da u populaciji dominiraju stabla sa srednjim i velikim sadržajem ulja i srednjim sadržajem sirovih proteina.