Nutritional quality evaluation of newly developed high‐protein genotypes of pigeonpea (Cajanus cajan)

Abstract

Two high-protein genotypes of pigeonpea (Cajanus cajan L ) , H P L 8 and H P L 40, were analysed for their nutritional quality characteristics, and the results were compared with those of normal-protein genotypes (C 11 and ZCPL 211). The protein content of the high-protein genotypes was higher on average by nearly 20% but their starch content, the principal constituent of the seed, was lower by about 8 %. The higher @action (about 7%) of globulin, the major storage protein, was associated with a lower glutelin fraction in the high-protein genotypes. The amino acid composition (g per 100 g protein) of the high-protein genotypes was comparable with those of the normal-protein genotypes. However, the sulphur-containing amino acids methionine and cystine were noticeably higher (about 25 %) in high-protein genotypes when results were expressed in g per 100 g sample. N o large differences in true protein digestibility, biological value and net protein utilisation were observed between H P and N P genotypes. True protein digestibility was significantly increased by cooking in both whole-seed and dhal samples. The values for utilisable protein were considerably higher in high-protein genotypes, suggesting their superiority from the nutritional point of view.

Nutritional profile of soakedCajanus cajan(L.) Millsp. and its utilization as partial replacement for soybean meal in the diet ofClarias gariepinus(Burchell, 1822) fingerlings

“…Okomoda, Tiamiyu, & Uma () stated earlier that the nutritional content of a plant is variable and depends upon the plant strain, environmental factors, and processing method applied to inactivate the anti‐nutritional factors in the seeds. This possibly explains the differences between the nutritional profile result reported in this study and those reported by Salunkhe, Chavan, and Kadam (), Tangtaweewipat and Elliott (), Singh, Jambunathan, Saxena, and Subrahmanyam (), Obasa, Dada, and Alegbeleye () and Onwuka (). The amino acid composition of soybeans was generally higher that those observed in C. cajan ; however, cysteine was substantial higher in C. cajan, and the values recorded in histidine, proline and serine were comparable ( p ≤ .05).…”

Quality nutrition through pigeonpea—a review

“…The results of rat feeding trials of these high-protein lines showed that boiled dal was comparable to the control in true protein digestibility, biological value, and net protein utilization [21]. They further concluded that the high-protein lines were nutritionally superior to normalprotein cultivars as the former contain quantitatively more utilizable protein and sulfur containing amino acids.…”

“…Singh [21] assessed these high protein lines for their chemical composition. They reported large differences between the levels of protein in high-protein (28.7 to 31.1%) lines and control cultivars (23.1 to 24.8%).…”

Genetic Improvement of Pigeon Pea — A Review

“…It was estimated that 350-450 kg protein can be harvested by growing these high protein selections on a one hectare plot. These lines on average yielded 100 kg ha −1 additional protein The increased nutritive value of this material [131] is important since pigeon pea is predominantly cultivated and consumed locally by resource poor farmers. Limited rat feeding trials to evaluate the nutritive value of cooked and raw pigeon pea samples of high and low protein genotypes showed that the high protein genotypes were superior to controls by providing more utilizable protein [129].…”