Laura: Soybean variety lacking Kunitz trypsin inhibitor
Laura - nova sorta soje bez Kunitz-tripsin inhibitora
Apstrakt
Grain of conventional soybean varieties requires heat processing to break down trypsin inhibitor's activity before using as food or animal feed. At the same time, protein denaturation and other qualitative changes occur in soybean grain, especially if the temperature of heating is not controlled. Two types of trypsin inhibitor were found in soybean grain the Kunitz trypsin inhibitor and the Bowman-Birk inhibitor. Mature grain of soybean Laura is lacking Kunitz trypsin inhibitor. Grain yield of variety Laura is equal to high yielding varieties from the maturity group I, where it belongs. Lacking of Kunitz-trypsin inhibitor makes soybean grain suitable for direct feeding in adult non ruminant animals without previous thermal processing. Grain of variety Laura can be processed for a shorter period of time than conventional soybeans. This way we save energy, and preserve valuable nutritional composition of soybean grain, which is of interest in industrial processing.
Zrno sorti soje standardnog kvaliteta treba da bude termički obrađeno da bi se inaktivirala aktivnost tripsin inhibitora, pre upotrebe za ishranu domaćih životinja. U toku postupka termičke obrade takođe dolazi do denaturacije korisnih protein i drugih kvalitativnih promena u zrnu soje, posebno ako temperatura nije kontrolisana. U zrnu soje su otkrivena dva tipa tripsin inhibitora Kunitz tripsin inhibitor i Bowman-Birk tripsin inhibitor. U zrelom zrnu sorte Laura se ne nalazi Kunitz tripsin inhibitor. Prinos zrna sorte Laura je na nivou visokoprinosih sorti I grupe zrenja, kojoj pripada. Zahvaljujući eliminaciji Kunitz tripsin inhibitora zrno sorte Laura može da se koristi direktno kao hrana za odrasle domaće životinje nepreživare, bez prethodne termičke obrade. U industrijskoj preradi postupak može da traje kraće u odnosu na tretman zrna standardnog kvaliteta. Na taj način se štedi energija a korisni proteini se denaturišu u manjem stepenu.
Ključne reči:
soybean / cultivar / Laura / Kunitz trypsin inhibitor / soja / sorta / Laura / Kunitz tripsin inhibitorIzvor:
Selekcija i semenarstvo, 2010, 16, 2, 27-30Izdavač:
- Društvo selekcionara i semenara Republike Srbije, Beograd