After one
week of storage TBARS increased in all samples, except those with GA
and BHT. After 14 days of storage TBARS increased in all samples, but extracts
YE and YAwere the best antioxidants. In their case, TBARS indexes
were 1.10 mg/kg and 1.34 mg/kg and these extracts proved to be better
antioxidants than BHT (TBARS = 1.76 mg/kg). Generally, TBARS increased
in all samples with the storage. After 21 days of storage TBARS
was 1.72 mg/kg in sample YW, 1.20 mg/kg in sample YE, 1.80 mg/kg
in sample YA and 1.85 mg/kg in sample GW showing a marked inhibition
of the formation of secondary oxidation products in comparison
to the control (TBARS = 2.59 mg/kg).