Application of green tea extract (GTE) to food preservation was investigated. Viable counts of cucumber pickled overnight at 10°C with seasoning solution containing acetic acid, NaCl, and/or GTE were determined during cold storage at 10°C. Viable counts did not increase above the initial values for 7 days of treatment with seasoning solution containing 0.1% acetic acid, 2% NaCl, and 0.05% GTE. Use of these seasoning components alone or in combination showed no bacteriostatic effects on the pickled cucumber. Viable counts of Escherichia coli O157 : H7 did not increase when the cucumber was artificially contaminated with this bacterium and then pickled overnight with the seasoning solution containing 0.1% acetic acid. These results indicated that the addition of GTE to seasoning solution containing both acetic acid and NaCl prolongs the shelf life of overnight pickled cucumber.
All Science Journal Classification (ASJC) codes
- Food Science