| Autor: |
Iwakoshi K; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Shiozawa Y; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Yamajima Y; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Baba I; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Monma K; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Kobayashi C; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan., Sasamoto T; a Department of Food Chemicals , Tokyo Metropolitan Institute of Public Health , Tokyo , Japan. |
| Jazyk: |
angličtina |
| Zdroj: |
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment [Food Addit Contam Part A Chem Anal Control Expo Risk Assess] 2019 Jul; Vol. 36 (7), pp. 1020-1031. Date of Electronic Publication: 2019 May 17. |
| DOI: |
10.1080/19440049.2019.1615644 |
| Abstrakt: |
In this study, a new method was developed for simultaneously determining nine preservatives, that is, benzoic acid (BA), sorbic acid (SOA), dehydroacetic acid (DHA) and PHBAs (methyl p -hydroxybenzoate [PHBA-me], ethyl p -hydroxybenzoate [PHBA-et], isopropyl p -hydroxybenzoate [PHBA-ipro], propyl p -hydroxybenzoate [PHBA-npro]), isobutyl p -hydroxybenzoate [PHBA-ibut] and butyl p -hydroxybenzoate [PHBA-nbut]), in processed foods, employing liquid chromatography (LC). This procedure accelerated sample preparation and improved efficiency by employing modified quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction without clean-up. Samples were prepared with 20 mL of acetonitrile/water (1:1) with the assistance of a ceramic stone. The extract solutions were diluted 10 times or according to the detection amount and then injected into an LC-PDA. This method showed good linearity, and the LOQs were 10 mg/kg for BA, SOA and DHA and 5 mg/kg for the PHBAs. When validating this method, the recoveries of the nine preservatives were in the range 77.0-99.6%, RSD r values were in the range 0.7-5.3% and those of RSD wr were in the range 2.3-8.4%. These results suggest that this new method is highly reproducible. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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