Abstract
Durum wheat semolina (DWS) can be enriched with legume flours to produce more nutritious but high-quality pasta. DWS was substituted with detoxified matri (Lathyrus sativus) flour (DMF) at 5-25%, which in spaghetti increased the levels of protein, lipid, fibre and ash but decreased nitrogen-free extract. Water absorption, arrival time and dough development time increased from 63.1 to 69.2%, 1.7 to 2.4 and 2.3 to 3.3min, respectively, while dough stability, consistency and tolerance index decreased. DMF addition increased cooking loss (4.8-5.8%) and hardness (13.2-16.5N) but decreased percent rehydration. Based on farinographic (departure time), cooking quality (adhesiveness) and cooking loss thresholds for DMF at 15%, the effects of xanthan gum (XG) addition on the cooking qualities of the corresponding spaghetti were determined. XG up to 3% limited cooking loss (4.97 vs 5.4%) and improved hardness, compared to samples lacking XG. Considering functional, cooking and nutritional properties of spaghetti, incorporation of 15% DMF and 3% XG appeared optimal.
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