PMID- 14594682
OWN - NLM
STAT- MEDLINE
DCOM- 20040210
LR  - 20131121
IS  - 0265-203X (Print)
IS  - 0265-203X (Linking)
VI  - 20
IP  - 10
DP  - 2003 Oct
TI  - Migration of volatile degradation products into ozonated water from plastic 
      packaging materials.
PG  - 985-94
AB  - Migration of volatile degradation products from poly(ethylene terephthalate) 
      (PET) and high-density polyethylene (HDPE) bottles, polypropylene (PP) caps and 
      ethyl vinyl acetate (EVA) liners into ozonated water was measured. Polymer strips 
      were immersed in deionized and distilled water with ozone concentrations of 0.5, 
      2.5 and/or 5 mg kg(-1) inside 35-ml vials, which were clamp-sealed and stored at 
      40 degrees C for 10 days. A purge-and-trap unit was developed to extract volatile 
      products from the ozonated water in vials. The extractables were trapped in an 
      adsorbent tube and analysed using a GC-MS coupled with an automated thermal 
      desorber (ATD). Mass spectra were interpreted by comparison with a NIST mass 
      spectral library, and an internal standard method was used to quantify the 
      extractables of interest. Several volatile compounds found in ozonated water that 
      had been in contact with PP, EVA and HDPE polymers included butanal, pentanal, 
      hexanal, heptanal, octanal, nonanal, 2,2-dimethyl propanal, 3-hexanone, 
      2-hexanone and heptanone. These compounds could cause off-taste and off-odour 
      with a low organoleptic threshold. In general, the concentrations of these 
      volatile compounds increased with an increased exposure to ozone. The highest 
      concentration found was 14.1 +/- 0.6 microg kg(-1) for hexanal with a 5 mg kg(-1) 
      ozone treatment of PP caps. Even at a treatment level of 5 mg kg(-1) ozone, which 
      is greater than 10 times the current regulatory limits for bottled water, the 
      extractables migrating from those polymers were within the levels permitted by 
      the FDA. For the PET sample, no significant peaks were observed before or after 
      ozonation. These results imply that PP caps containing EVA liners may be major 
      sources of off-odour and taste in ozonated bottled water.
FAU - Song, Y S
AU  - Song YS
AD  - US Food and Drug Administration, Summit-Argo, IL 60501, USA. 
      yoon.song@cfsan.fda.gov
FAU - Al-Taher, F
AU  - Al-Taher F
FAU - Sadler, G
AU  - Sadler G
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - England
TA  - Food Addit Contam
JT  - Food additives and contaminants
JID - 8500474
RN  - 0 (Mineral Waters)
RN  - 0 (Plastics)
RN  - 0 (Polyethylenes)
RN  - 0 (Polypropylenes)
RN  - 0 (Polyvinyls)
RN  - 0 (Water Pollutants, Chemical)
RN  - 24937-78-8 (ethylenevinylacetate copolymer)
RN  - 66H7ZZK23N (Ozone)
SB  - IM
MH  - Disinfection/methods
MH  - Food Contamination/*analysis
MH  - *Food Packaging
MH  - Humans
MH  - Mineral Waters/*analysis
MH  - Ozone/*pharmacology
MH  - Plastics/*chemistry
MH  - Polyethylenes/chemistry
MH  - Polypropylenes/chemistry
MH  - Polyvinyls/chemistry
MH  - Volatilization
MH  - Water Pollutants, Chemical/analysis
EDAT- 2003/11/05 05:00
MHDA- 2004/02/11 05:00
CRDT- 2003/11/05 05:00
PHST- 2003/11/05 05:00 [pubmed]
PHST- 2004/02/11 05:00 [medline]
PHST- 2003/11/05 05:00 [entrez]
AID - ABHB4FUYD6Q1VUE6 [pii]
AID - 10.1080/02652030310001606014 [doi]
PST - ppublish
SO  - Food Addit Contam. 2003 Oct;20(10):985-94. doi: 10.1080/02652030310001606014.