Table 4 Effects of trehalose treatment on the textural changes of salted Chinese cabbage during freezing and thawing

Treatment Freeze -thaw (Fig 3) Juice from ground cabbage after texture analysis Hardness with Φ2 probe (N) Crispness (%)



Salinity (%) Soluble solid content (°Brix) Before freezing After thawing Before freezing After thawing
Immersion in 8% salinity water a day (9.1 °Brix from salt) Plate - Plate 4.9 10.25 6.57±0.71abc* 7.76±1.78defg 45.8±10.7bc 31.9±12efg
Immersion in 7.1% salinity and 14.5 °Brix water a day Plate - Plate 3.3 11.69 6.45±1.38abc 6.84±1.52bcd 49.8±15.4ab 35.1±8.6def
Immersion in 2.7% salinity water a day (3.56 °Brix from salt) Plate - Plate 1.18 4.35 6.30±1.01ab 7.46±1.33cde 55.1±12.8a 31.8±11.4efg
Immersion in 2.7% salinity and 18 °Brix water a day Plate - Plate 1.63 7.49 5.95±0.88a 7.41±1.21cde 51.2±11.3ab 34.0±8.1defg
3 hours with salt + a day without salt Plate - Plate 5.7 11.78 6.98±1.43bcd 8.01±1.01efgh 33.4±11.2defg 28.8±13.4fg
3 hours with salt + a day in trehalose Plate - Plate 4.5 12.73 7.11±0.79bcd 7.57±1.07def 39.7±10.5cde 32.0±14.2efg
3 hour with salt + a week without salt Plate - Plate 6.9 13.8 6.94±1.02bcd 8.35±1.38fgh 41.2±7.0cd 28.6±11.8fg
3 hours with salt + a week in trehalose Plate - Plate 5.7 19.2 7.83±1.06defg 6.62±1.05abc 32.1±11.1efg 38.5±17.6cde
1 hour in salt + a week in trehalose Fan type - Room temperature 9.1 22.8 8.60±1.81gh 8.75±2.02h 36.5±12.2def 27.3±12.1f
*The values represent mean±SD for triplicate experiments. Means with same letters within same characteristic are not significantly different at p<0.05 by Duncan’s multiple range test