title: In vitro starch digestibility, expected glycemic index, and thermal and pasting properties of flours from pea, lentil and chickpea cultivars.
abstract: In vitro starch digestibility, expected glycemic index (eGI), and thermal and pasting properties of flours from pea, lentil and chickpea grown in Canada under identical environmental conditions were investigated. The protein content and gelatinization transition temperatures of lentil flour were higher than those of pea and chickpea flours. Chickpea flour showed a lower amylose content (10.8-13.5%) but higher free lipid content (6.5-7.1%) and amylose-lipid complex melting enthalpy (0.7-0.8J/g). Significant differences among cultivars within the same species were observed with respect to swelling power, gelatinization properties, pasting properties and in vitro starch digestibility, especially chickpea flour from desi (Myles) and kabuli type (FLIP 97-101C and 97-Indian2-11). Lentil flour was hydrolyzed more slowly and to a lesser extent than pea and chickpea flours. The amount of slowly digestible starch (SDS) in chickpea flour was the highest among the pulse flours, but the resistant starch (RS) content was the lowest. The eGI of lentil flour was the lowest among the pulse flours.
authors.affiliation: Guelph Food Research Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, ON, Canada N1G 5C9.
authors.forename: Hyun-Jung
authors.initials: HJ
authors.lastname: Chung
authors.affiliation: Guelph Food Research Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, ON, Canada N1G 5C9. Electronic address: liuq@agr.gc.ca.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X9.
authors.forename: Ratnajothi
authors.initials: R
authors.lastname: Hoover
authors.affiliation: Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada S7N 5A8.
authors.forename: Tom D
authors.initials: TD
authors.lastname: Warkentin
authors.affiliation: Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada S7N 5A8.
authors.forename: Bert
authors.initials: B
authors.lastname: Vandenberg
keywords: Chickpea; Expected glycemic index; In vitro starch digestibility; Lentil; Pea