Structural and techno-functional properties of bovine collagen and its application in hamburgers / Christian Alexandretti, Roberto Verlindo, Guilherme De Souza Hassemer, Alexandra Manzoli, Silvane Souza Roman, Ilizandra Aparecida Fernandes, Geciane Toniazzo Backes, Rogério Luis Cansian, Mônica Beatriz Alvarado Soares, Rodrigo Schwert, Eunice Valduga.
Sažetak

The objective of this work is to characterize two types of bovine collagen (fibre and powder), evaluating its application in mixed hamburger formulations, as well as the quality characteristics of the products. The collagen fibre had a fibrillar structure, molecular mass 100 kDa and greater gel strength (146 315 Pa) and protein content (97.81 %) than the powdered collagen, which had molecular mass from 50 to 100 kDa, greater hydroxyproline content, and a morphological structure with spherical microparticles more amorphous than the collagen fibre. In this study we found that the addition of 1.5 % powdered collagen and 2.5 % flocculated soybean flour and/or 0.75 % powdered collagen and 3.5 % flocculated soybean flour did not deteriorate the technological properties or the sensory attributes of hamburgers. The use of collagen is a promising alternative, since it has functional properties, improves the texture characteristics of a product, and is of low cost.; Svrha je ovoga rada bila opisati dva tipa goveđeg kolagena (vlakna i prah), procijeniti mogućnost njihove primjene u proizvodnji hamburgera od miješanog mesa i ispitati kakvoću dobivenih proizvoda. Kolagenska vlakna imala su fibrilarnu strukturu, molekularnu masu od 100 kDa, te veću čvrstoću gela (146 315 Pa) i udjel proteina (97,81 %) od kolagena u prahu, koji je imao molekularnu masu od 50 do 100 kDa, veći udjel hidroksiprolina i djelomično amorfnu strukturu sa sfernim mikročesticama. Utvrđeno je da se dodatkom 1,5 % kolagena u prahu i 2,5 % flokuliranih sojinih bjelančevina iz sojinog brašna i/ili 0,75 % kolagena u prahu i 3,5 % flokuliranih bjelančevina iz sojinog brašna nisu pogoršale tehnološke i senzorne značajke hamburgera. Kolagen se radi svojih funkcionalnih svojstava može upotrijebiti kao jeftini dodatak smjesi za hamburgere za poboljšanje teksture proizvoda.