Abstract:
This research aims to study the effect of essential oil-icing system on Pacific
white shrimp (Litopenaeus vannamei) quality. Thyme essential oil-icing system three
conditions: ITM 01 (0.1% thyme essential oil), ITM 02 (0.2% thyme essential oil) and
ITM 03 (0.3% thyme essential oil) compared to Pacific white shrimp were none
essential oil-icing system during ice storage of 26 days was investigated. ITM 03 was
the most effectively retarded chemical (pH, TVB-N and TMA-N), physical (% cooking
loss, color and shear force), microbiological (total plate count) and sensorial
(appearance, odor, texture and tasty) qualities loss of cooked Pacific white shrimp
and were followed by ITM 02, ITM 01 and ICC, respectively. Considering the shelf life
of product by the sensorial quality (odor scores were less than 5 points), that is
important to consider for human food and consumer safety. The shelf life of ITM 03,
ITM 02, ITM 01 were 12, 10 and 8 days respectively. The shelf life of ICC was only 4
days. Immersion of Pacific white shrimp in essential oil-icing system for a longer
period of time were more changed for the chemical, physical, microbiological and
sensory qualities.