Table 1.
Effect of pretreatments and vacuum packing on chemical changes of papaya
| Storage period (weeks) | Treatments | Room temperature (mean) | Storage period (weeks) | Refrigeration temperature (mean) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Moisture (g%) | TSS (°brix) | Acidity (g%) | Vitamin C (mg %) | Reducing sugar (g%) | Total sugar (g%) | Moisture (g%) | TSS (°brix) | Acidity (g%) | Vitamin C (mg%) | Reducing sugar (g%) | Total sugar (g%) | |||
| 0 | Initial | 90.6 | 6.1 | 0.15 | 20.8 | 3.3 | 5.5 | 0 | 85.5 | 6.3 | 0.17 | 22.2 | 3.6 | 5.6 |
| I | T1 (Control) | – | – | – | – | – | – | IV | – | – | – | – | – | – |
| T2(without treatment) | 80.3 | 6.2 | 0.11 | 20.2 | 3.5 | 5.1 | 80.8 | 6.6 | 0.11 | 20.2 | 4.05 | 5.3 | ||
| T3 (Waxing) | 80.2 | 6.5 | 0.11 | 20.1 | 3.6 | 5.1 | 80.8 | 6.7 | 0.10 | 20.1 | 4.0 | 5.3 | ||
| T4 (Oil film) | 79.8 | 6.7 | 0.09 | 19.7 | 3.6 | 5.04 | 80.5 | 6.9 | 0.08 | 19.8 | 4.1 | 5.2 | ||
| T5 (Purafil) | 79.9 | 6.6 | 0.10 | 19.8 | 3.6 | 5.10 | 80.8 | 6.8 | 0.10 | 19.9 | 4.1 | 5.3 | ||
| T6 (Tissue paper) | – | – | – | – | – | – | – | – | – | – | – | – | ||
| SED | .192 | .0563 | .0007 | .0478 | .0212 | .0259 | 1.6171 | .0744 | .0113 | .0313 | .0217 | .0254 | ||
| CD | .38** | .12** | .01** | .09** | .04** | .01** | 3.19** | .15** | .02** | .06** | .04** | .05** | ||
**The CD values are highly significant at P ≤ 0.01. Each value is the mean for three replicates