Naslov
CRYOPROTECTIVE EFFECT OF OAT GLUCANS ON BEEF MYOFIBRLLAR PROTEINS

Autori
Kovačević, Dragan ; Mastanjević, Krešimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstract of 15th International scientific and professional conference 15th Ružička Days “TODAY SCIENCE –TOMORROW INDUSTRY" / Drago Šubarić - Vukovar : Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku ; Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2014, 71-71

ISBN
978-953-7005-34-4

Skup
15th International scientific and professional conference 15th Ružička Days “TODAY SCIENCE –TOMORROW INDUSTRY"

Mjesto i datum
Vukovar, Hrvatska, 11.09.2014. - 12.09.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cryoprotection; beef myofibrillar proteins; DSC; β-glucans texture (TPA); instrumental colour (L*; a*; b*)

Sažetak
Cryoprotective effects of oats β-glucans on beef myofibrillar proteins after frozen storage were invesigated by the use of Differential scanning calorimetry (DSC). Also influence of frozen storage on texture profile analysis (TPA) parametrs, instrumental colour parameters and cooking loss of beef myofibrillar proteins were investigated. Beef myofibrillar proteins samples were prepared from beef meat (mainly lat. musculus psoas major), mixed with oat β-glucans (w = 0 - 6%), quickly frozen and stored for 30 days on -30 °C. Onset temperature of transition (To), peak thermal transition (Tp), and endset temperature of transition (Te), and denaturation enthalpy (ΔH), were evaluated. Peak (Tp) thermal transition temperatures of beef myofibrillar proteins showed shift to higher values with the increase of mass fraction of β-glucans. Denaturation enthalpies (ΔH) of beef myofibrillar proteins showed increase with increase of mass fraction of oat β-glucans. Instrumental colour parameters (lightness (L*), redness (a*), yellowness (b*) and whiteness (L* − 3b*) of beef myofibrillar proteins were significantly (P<0.05) affected by addition oat β-glucans. Hardness, gumminess and chewiness increased significantly (P<0.05) and cooking loss decreased significantly (P<0.05) by addition of oat β-glucans. Cohesiveness and springiness of beef myofibrillar gels were not significantly (p > 0.05) affected by addition of oat β-glucans. Increase in peak thermal transition (Tp), denaturation enthalpies (ΔH), some TPA and instrumental colour parameters indicates possible cryostabilsation effect of oat β-glucans on beef myofibrillar proteins.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

POVEZANOST RADA