Magali Monteiro da Silva
Magali Monteiro da Silva
Magali Monteiro da Silva
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MIGRAÇÃO DE ESTABILIZANTE<br />
CONTRA RADIAÇÃO UV<br />
Table 1. Migration level of TINUVIN P from PET bottles into fatty-food simulants (10 <strong>da</strong>ys/40°C).<br />
OLIVE<br />
OIL<br />
SOYBEAN<br />
OIL<br />
SIMULANTS<br />
ISOOCTANE<br />
*<br />
N-<br />
HEPTANE *<br />
TINUVIN P 2.6 3.1<br />
1.7<br />
0.23<br />
SD b 0.6 0.2<br />
0.2<br />
0.03<br />
(µg/dm 2 )<br />
a. mean value for 3 replicates; b. absolute stan<strong>da</strong>rd deviation (n=3)<br />
* The results have not been adjusted for stability losses<br />
Table 2- Levels of Tinuvin P (mg/100 g) in PET<br />
bottles, determined by HPLC and GC/MS.<br />
HPLC/UV<br />
Sections of PET bottles<br />
TOP<br />
BODY<br />
BOTTOM<br />
TINUVIN P a<br />
12.3<br />
12.2<br />
12.4<br />
RSD (%)<br />
1.4<br />
0.1<br />
0.4<br />
GC/MS<br />
TINUVIN P a<br />
12.9<br />
12.9<br />
13.5<br />
RSD (%)<br />
2.9<br />
0.1<br />
1.2<br />
a<br />
Mean value of 7 replicates; RSD. Relative stan<strong>da</strong>rd deviation.
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