Abstract:
Sunflower in an oleaginous plant because of it high oil containing (the
fruit - akene), which is often rising over 50% from dry substances. Nutritive
value is very high also because the presence of other substances such as:
provitamin D, lipo water-soluble A, D, E vitamins, tocoferoli, lecithin,
cephalin, colins, B4 vitamin, B8 vitamin.
Sub products which results after the extraction of brut oil (main sub
product – turte, coarse-ground grist, flours, shells), and also from brut oil
refinery, through them chemical composition (richness in proteins of the
main sub product, in unnitrogen extractives and shell’s cellulose) find them
self other good primary and secondary usefulness.
Lately, sunflower may be consider as a protein plant. From one tone of
seed results medium 300 kg of turtes and coarse-ground grist, which contains
between 30 and 50% brut protein (depending on the quality of the seeds and on
extraction methods). For a production of 1600 kg/ha akenes results 216 kg brut
protein or 183,6 pure protein (medium values), with a highly biological valor
made by amino acids content (12,8 g lizine; 5,0 g triptofan; 6,5 tirozin; 2,69 g
cistin; 29,3 g arginin; 8,7 g histidin on one kg of turtes).
The protein character of sunflower crop, results on indirect manner
from using the seed’s shells as substratum for green crop yeast (1 tone of
shells → 150 kg green crop yeast with 14 – 23% protein, 6 – 8% glycogen).
In this scientifical paper, we present the evolution of shell percent and
brut protein content of sunflower akene, depending on different fertilizers
dozes. By growing up the nitrogen dozes results the growing of seed’s protein
content, and potassium proves to have the same positive effect
