Abstract
Abstract A collaborative study of the method for extractable color in capsicums and oleoresin paprika was conducted to determine if the NBS neutral glass filter standard is superior to the chemical standard now used as a spectrophotometer check. For a 1000 ASTA (American Spice Trade Association) color value sample, the reproducibility standard deviation was 49 with the chemical standard compared with 14 with the NBS filter. The repeatability standard deviations were 9.0 and 8.9, respectively. For a 2000 ASTA color value sample, the reproducibility standard deviation was 162 with the chemical standard compared with 44 with the NBS filter. The repeatability standard deviations were 12.9 and 10.1, respectively. The study also indicated that 16 hr in acetone extracted 8.0% more of a capsicum than the 4 hr in the present AOAC method. The repeatability standard deviations for 4 hr vs. 16 hr were 2.1 and 1.6. The method has been adopted as official first action.
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