Ozone. One strategy to simultaneously reduce pathogen
attack and delay senescence is to expose fruit to ozone, which is a
potent antimicrobial agent. Its use in cold rooms effectively reduces
ethylene, amplifying its protective effect during fruit aging (Aguayo
et al., 2006; Skog and Chu, 2000). There appear to be no ill-effects
on TSS after ozone treatment but there have been relatively few
studies done (Aguayo et al., 2006; Rodoni et al., 2010; Tzortzakis
et al., 2007). Tzortzakis et al. (2007) reported higher contents of
fructose and glucose in ripe fruit 6 d after ozone-enrichment (0.05
or 1.0 mol mol−1) compared to the controls (<0.0005 mol mol−1)
and the treated fruit were found to be sweeter as judged by a
sensory panel. Aguayo et al. did not find any differences in sugar
accumulation in whole fruit treated with ozone applied cyclically
(∼4 mol mol−1) but there were detectable difference in sliced
fruit, and the Taste panel found the treated fruit to be superior in
overall quality.
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