Textural analysis of jam medium was also performed by
back extrusion tests using a Texture Analyser (Table 4). In
this case, the mean values of gel strength, rupture strength,
and compression area were similar in control and transgenic
lines. The distance that the plunger penetrates before
rupture of the gel can be used as an estimation of gel elasticity.
This distance was similar in all genotypes, being the
mean value of 2.66 ± 0.09 mm. Adhesiveness values were
slightly lower in transgenic lines when compared with the
control jam medium, however, differences were not statistically
significant.
Table 2
Anthocyanin content and drip loss of control and transgenic strawberry
fruits after thawing
Anthocyanin content
(Abs530–Abs657)/g f.w.
Drip loss
(g/100g)
Control 17.8 ± 3.5 37.8 ± 6.3
Apel 14 19.3 ± 4.4 45.6 ± 3.3
Apel 23 16.5 ± 3.4 40.3 ± 8.6
C A14