ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
An acid distillation (AD) method, followed by ion chromatography (IC) resulted in incomplete extraction (50-65% recovery) of sulfite from shrimp samples fortified with various levels of sodium metabisulfite (Na2S2O5). AD-IC accounted for approximately 30% of the sulfite as determined by the AOAC Monier-Williams method (M-W), when shrimp were treated with a standard sulfite dip. An IC method involving extraction of shrimp samples with an alkaline-formaldehyde solution (AFE-IC) or water (WE-IC) gave residual sulfite levels which averaged 97% of those obtained by the M-W method. Fresh shrimp treated with 0.5% and 1.25% Na2S2O5 dips were found by the M-W and WE-IC methods to have mean residuals of 31 and 83 ppm as SO2, respectively, which were below FDA's legal limit of 100 ppm as SO2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1986.tb11200.x
