Anti-nutritional factors in field pea (Pisum sativum L.) and grass pea (Lathyrus sativus L.).

摘要

Seed samples of seventeen field pea cultivars grown at five locations, and nine grass pea grown at two locations, in western Canada during 1993 and 1994 were analysed for total phenolics, condensed tannins and trypsin inhibitor activity (TIA). Total phenolics in field pea differed significantly among cultivars. The cultivar x year interaction was significant, whereas there were no significant differences between years or locations, and the cultivar x location interaction was not significant for total phenolics in field pea. Total phenolics in field pea ranged from 162 mg kg{dollar}sp{lcub}-1{rcub}{dollar} DM (Dry matter) (CE) (Catechin equivalents) for AC Tamor to 325 mg kg{dollar}sp{lcub}-1{rcub}{dollar} DM (CE) for Richmond. Field pea had barely detectable levels of condensed tannins which did not differ among cultivars, years, locations, and their interactions. TIA in field pea differed significantly among cultivars. The cultivar x location interaction for TIA in field pea was also significant, however, the effects of year, location, and the cultivar x year interaction for TIA in field pea were not significant. TIA in field pea ranged from 2.22 TIU mg{dollar}sp{lcub}-1{rcub}{dollar} (DM) for Danto to 7.66 TIU mg{dollar}sp{lcub}-1{rcub}{dollar} (DM) for Baroness. Total phenolics and condensed tannins in grass pea differed significantly among cultivars, whereas no significant differences existed between years, locations, or their interactions. Total phenolics in grass pea ranged from 868 mg kg{dollar}sp{lcub}-1{rcub}{dollar} DM (CE) for L880388 to 2059 mg kg{dollar}sp{lcub}-1{rcub}{dollar} DM (CE) for LS89110. Condensed tannins in grass pea ranged from 0.89 g kg{dollar}sp{lcub}-1{rcub}{dollar} DM (CE) for L880388 to 5.18 g kg{dollar}sp{lcub}-1{rcub}{dollar} DM (CE) for LS89125. TIA in grass pea did not differ among cultivars, years, locations, or their interactions. Mean TIA was 27.51 TIU mg{dollar}sp{lcub}-1{rcub}{dollar} (DM) for the grass pea lines tested. (Abstract shortened by UMI.)