Improved quality properties of low-fat meat patties containing sweet persimmon powder during freeze storage

Abstract

Pork patties were made containing hot air dried sweet persimmon powder (T1: 3%, T2: 6%) and freezer dried sweet persimmon powder (T3: 3%, T4: 6%). The control (C: no addition) and each treatment were stored for 40 days at -18°C. The pH value decreased (p<0.05) in all products over 30 days of storage but slightly increased thereafter. There was no significant difference in WHC between the control and treatment groups. Cooking loss and meat color (CIE I., a, b) increased significantly (p<0.05) as storage increased. The cooking loss of meat patties containing sweet persimmon powder were significantly (p<0.05) higher than the control. The L value of the control increased significantly (p<0.05) relative to the treatment groups, however the a and b values were slightly higher in meat patties containing sweet persimmon powder. In all products, the reduction ratio of diameter increased (p<0.05) with storage time. With regard to microorganisms, all samples were in good condition, containing below 4.20 log CFU/g based on total plate counts through 40 days, though total plate counts and coliform plate counts of the control were lower (p<0.05) than T3 and T4. The VBN values of T4 was significantly higher than those of other products at 15, 30, and 40 days of storage. The TBARS values of meat patties containing sweet persimmon powder were significantly (p<0.05) higher than those of the control. Sensory panels determined that meat patties containing sweet persimmon powder had a higher (p>0.05) preference score for overall acceptability.