The burgers were divided into two batches:
uncooked burger and cooked burger processed by heating at 170oC for12 minutes. Both
samples were packed in Nylon/Polyethylene bags and stored at 4oC during the course of
which total viable bacteria (TVB), cooking yield, TBARS value and hardness value were
determined. The results showed that TVB values increased from 4.10 to 6.97 log cfu/g
during storage for 16 days in the uncooked burgers and from 2.44 to 6.03 log cfu/g during
storage for 28 days in the cooked burgers. Addition of Guar or Xanthan gums increased the
cooking yield but decreased TBARS and hardness values of both uncooked and cooked
burgers. Increasing the percentage of Guar and Xanthan gums resulted in improved
qualities of both uncooked and cooked burgers. There were significant differences TBARS
values between the beginning and end of the storage periods (p