Abstract
Attempts to assess the tryptophan content of whole potato (Solanum tuberosum) tuber by colorimetry using glyoxylic acid-tryptophan chromophore reaction gave inflated results and the Spies W method had to be used. However, cystine + cysteine estimated by a simple colorimetric procedure using NaBH4 and Ellman's reagent was successful for raw and cooked potatoes.
Original language | English |
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Pages (from-to) | 397–408 |
Journal | Nutrition Reports International |
Volume | 37 |
Issue number | 2 |
State | Published - 1988 |