Effect of plasma protein hydrolysates on fatty acids, colour, texture and oxidation stability of mutton sausage during refrigeration storage Kumari S., Pandey A., Soni Arvind1,*, Sarkar Srobana, Kumar Arun1 Post Graduate Institute of Veterinary Education and Research, Rajasthan University of Veterinary and Animal Sciences, Jaipur-302 031, Rajasthan 1ICAR-Central Sheep and Wool Research Institute, Avikanagar-304 501, Rajasthan *E-mail address: lugaks3311@gmail.com
Online Published on 12 February, 2024. Abstract A study was conducted to explore the changes in quality attributes of mutton sausage incorporated with sheep plasma protein hydrolysates (SPPH) stored at refrigeration temperature under aerobic packaging. The plasma protein hydrolysed by in vitro gastrointestinal digestion was incorporated into mutton sausages at 5 (T1), 7.5 (T2) and 10% (T3) (w/w) levels and compared with control (C: 0% SPPH) for fatty acids, physico-chemical properties, colour, texture profile and oxidative stability at 7 days intervals for 21 days. The incorporation of SPPH had significant effect (P<0.05) on polyunsaturated fatty acid / monounsaturated fatty acid ratio in T2 (1.48±0.03), T3 (1.48±0.04) than control (1.43±0.07%). The redness value decreased significantly (P<0.05) in T2 (7.46±0.34) and T3 (7.42±0.22) than control (8.43±0.09) at 21 days of storage. The instrumental texture profile attributes increased significantly (P<0.05) in mutton sausage during the storage period. Tyrosine and free fatty acids of mutton sausage increased significantly (P<0.05) with storage period in all the groups; however, among treatment groups, T3 had lowest tyrosine and free fatty acid value (5.24±0.04 mg/100 g and 0.19±0.02%) than control (6.23 ±0.09 mg/100 g and 0.22±0.01%) at 21 days of storage. The findings suggest that SPPH (10%) can serve as a potential ingredient for improving the physico-chemical properties and oxidative stability of emulsion-based products. Top Keywords Mutton sausage, Oxidative stability, Plasma protein hydrolysates, Refrigeration storage. Top |