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| Titel: |
Sodium Bisulfite Analyses in Shrimp by Ion Selective Electrode, Sulfite Oxidase, and Modified Monier-Williams |
| Auteur: |
Gerdes, D. L. Hirchak, R. D. Grodner, R. M. Martin, R. M. |
| Verschenen in: |
Journal of aquatic food product technology |
| Paginering: | Jaargang 8 (1999) nr. 1 pagina's 59-64 |
| Jaar: |
1999-05-07 |
| Inhoud: |
Sulfite determination in shrimp was accomplished using an ion-selective electrode, and enzymatic method and the Modified Monier-Williams procedure. A rapid electrode method using a double junction-sleeve type electrode with a hydrogen reference electrolyte was developed using sodium metabisulfite (0.01 M) as the reference electrolyte and saturated silver chloride as the internal electrolyte. Concentrations between 0 and 250 ppm were tested to produce a standard curve. The concentration range of interest to the shrimp industry lies between 50 and 250 ppm. Response time was approximately 90 s with slight variations after 120 s. This technique was completed in a fraction of the time required by the modified Monier-Williams and the enzyme method, which take 2.5 h and 45 min, respectively. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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