title: Effect of the molecular weight and concentration of chitosan in pork model burgers.
abstract: Chitosan of high and low molecular weights was added at 0%, 0.25%, 0.5% and 1% concentrations to a burger model system. Burgers were evaluated by physicochemical analysis, cooking characteristic and storage stability. The antioxidant activity of chitosan was studied in vitro. The addition of chitosan influenced pH and color properties, in molecular weight and concentration dependent ways. Cooking properties were significantly affected by the chitosan. High molecular weight chitosan improved all cooking characteristics compared with control samples. Low molecular weight chitosan increased the shelf life of burgers, enhanced the red color and reduced total viable counts, compared with control and high molecular weight chitosan samples. The antioxidant activity of chitosan was dependent on molecular weight and concentration. The results indicate that high molecular weight chitosan (HMWC) improves all cooking characteristics and antioxidant activity while low molecular weight chitosan extends the red color and reduces total viable counts.
authors: IPOA Research Group, Food Technology Department, Universidad Miguel Hernández, Ctra. de Beniel km 3.2, 03312 Orihuela (Alicante), Spain.
authors: E
authors: E
authors: Sayas-Barberá
authors: J
authors: J
authors: Quesada
authors: E
authors: E
authors: Sánchez-Zapata
authors: M
authors: M
authors: Viuda-Martos
authors: F
authors: F
authors: Fernández-López
authors: J A
authors: JA
authors: Pérez-Alvarez
authors: E
authors: E
authors: Sendra
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D000975:Antioxidants / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D015169:Colony Count, Microbial; D003296:Cooking; D005519:Food Preservation; D005520:Food Preservatives / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008460:Meat / Q000032:analysis*; D008970:Molecular Weight; D013552:Swine
chemical_list: D000975:Antioxidants; D005520:Food Preservatives; D048271:Chitosan