been ฉันรักแปลTable 3 shows the analysis of variance for three factors: storage temperature, storage time and freezing method and their mutual effects on strawberry characteristics (ascorbic acid content, total anthocyanin, acidity and pH). The individual effects of these factors on strawberry characteristics were statistically significant and have been explained. Differences in: kind, size and surface of ice crystals, favourability of reaction in the partially frozen state and decrease of dielectric constant or increase of proton mobility, that accompanies formation of ice, may contribute to this explanation (Thomson & Fennema, 1971). The combined effects on ascorbic acid and total anthocyanin were statistically significant, but combined effects on acidity and pH were not great.
3.5. Sensory evaluation
The sensory evaluation results showed that the effect of freezing method on desirability after storage (with the exception of texture) was not important while, at −12 °C desirability and quality of frozen strawberry decreased (Fig. 8). Also, samples stored at −18 and −24 °C maintained the highest degree of quality based on colour, texture, flavour and wholeness; the sample maintained at −12 °C was not acceptable (Fig. 9).