4.7 Article

Pulse type and extrusion conditions affect phenolic profile and physical properties of extruded products

Journal

FOOD CHEMISTRY
Volume 403, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.134369

Keywords

Legumes; Pulses; Extrusion -cooking; Pasta -making; Snacks; Pasta; Phenolic compounds

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The suitability of chickpea, red lentil, and green pea for the production of extruded products was evaluated, and it was found that red lentil showed the best results. Although processing reduced the content of some bioactive compounds, it increased cell-wall bound phenolic acids and antioxidant activity.
The suitability of chickpea, red lentil and green pea for the production of extruded products (i.e., snacks and pasta) was studied. Besides starch and technological properties, the impact of processing on some bioactive compounds was evaluated. The best results were obtained for lentil: the snacks showed the lowest porosity (21 %), the highest average pore radius (18.8 mu m), and high expansion (section area: 310 mm2; inner area: 114 mm2), while pasta exhibited low cooking loss (5.7 g 100 g-1) and high firmness (924 N). Extrusion-cooking reduced the soluble phenolic acid content (-45 %) and flavonoids (-41 %), but increased the cell-wall bound phenolic acids and antioxidant activity. The different pulses did not lead to a marked difference in the antiox-idant activity of the extruded products, although the lentil maintained the highest flavonoid content after both processes.

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