Canning Quality of New Drought-Tolerant Dry Bean (Phaseolus vulgaris L.) Lines

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Abstract: Canning quality of twenty nine new drought-tolerant bean lines from two grain types; large-seeded and small-seeded, was investigated. Bean seeds were soaked, blanched, canned in brine and stored for three weeks prior to evaluation. Mex-142, the popular canning variety, was used as a control. The traits studied were Hydration Coefficient (HC), Washed Drained Weight (WDWT), Percentage Washed Drained Weight (PWDWT), firmness, splits, clumping, size, shape and uniformity. Except for PWDT in large-seeded genotypes, there were significant differences between lines (p<0.05) for all traits studied. Small-seeded genotypes had higher HC (1.75) compared to large seeded genotypes (1.56). Seven small-seeded genotypes had HC >1.7 as required by processors. The highest WDWT was recorded in BCB11-10 (294.4±0.67 g) and BCB11-176 (294.1±0.97 g). All genotypes had PWDWT >60% as desired by processors. The control, Mex-142 had high splits (3.0) and low uniformity (3.67±0.67). The results showed that the small-seeded genotypes BCB11-80, BCB11-98 and BCB11-108 had better canning quality than Mex-142. Large-seeded genotypes require longer soaking and blanching period to meet the industry standards for HC.

A.O. Warsame
P.M. Kimani
American Journal of Food Technology