Ring distributions of PAHs from different youtiao samples are
presented in Fig. 1. For the ten youtiao samples in this study, 3- and4-ring PAHs were the dominant components, which accounted for
60.4e76.5% of the total PAHs. Moreover, 5- and 6-ring PAHs, which
are more toxic than low molecular weight PAHs, made up
9.85e29.6% of the total PAHs. In particular, the lowest percentage of
5- and 6- PAHs (9.85%) was detected in sample 1, the semiprocessed
frozen product. This result is consistent with that of
Saito et al. (2014), who also reported that the high temperature
achieved when grilling food would cause the formation of higher
molecular weight PAHs.
Ring distributions of PAHs from different youtiao samples arepresented in Fig. 1. For the ten youtiao samples in this study, 3- and4-ring PAHs were the dominant components, which accounted for60.4e76.5% of the total PAHs. Moreover, 5- and 6-ring PAHs, whichare more toxic than low molecular weight PAHs, made up9.85e29.6% of the total PAHs. In particular, the lowest percentage of5- and 6- PAHs (9.85%) was detected in sample 1, the semiprocessedfrozen product. This result is consistent with that ofSaito et al. (2014), who also reported that the high temperatureachieved when grilling food would cause the formation of highermolecular weight PAHs.
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