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Study on the complementary effect between the proteins of wheat and amaranth

✍ Scribed by Abreu, M. ;Hernández, M. ;Castillo, A. ;González, I. ;González, J. ;Brito, O.


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
272 KB
Volume
38
Category
Article
ISSN
0027-769X

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✦ Synopsis


Wheat flour (W), 'Walnutacres' amaranth seeds (A) and three mixtures of them (W : A, 0.87 : 0.13, 0.75 : 0.25 and 0.64 : 0.36 on a protein basis) were assayed for amino acid score (AAS) and protein value (PV) on rats. Lysine and leucine were the limiting amino acids for wheat and amaranth proteins with an AAS of SO and 61 %, respectively. AAS of the combinations W : A, 0.87 : 0.13, 0.75 : 0.25 and 0.64 : 0.36 were 12, 24 and 34%, respectively, and are higher than that of wheat proteins. The PV of amaranth seeds (4.09) was two times higher than that of wheat (1.94). The combinations W : A , 0.75 : 0.25 and 0.64 : 0.36 showed a PV 45% higher than that of the 0.87 : 0.13 one, which in turn was similar to that of the wheat proteins. It is concluded that the supplementation of wheat flour with 'Walnutacres' amaranth up to 20% could improve the protein quality up to 45%.

Zusarnmenfassung

Untersuchungen uber den Erganzungseffekt der Proteine von Weizen und Amaranth Von Weizenmehl (W), "Wa1nutacres"-Amaranthsamen (A) und drei Mischungen davon (W : A, 0.87 : 0.13; 0.75 : 0.25 and 0.64 : 0,35; auf Protein-Basis) werden "amino acid score" (AAS) und "protein value" (PV) an Ratten bestimmt. Lysin und Leucin sind die limitierenden Aminosauren fur Weizen-und Amaranthproteine mit AAS-Werten von SO bzw. 61 %. Die AAS-Werte fur die drei Kombinationen W : A betrdgen 12, 24 bzw. 34% und sind hoher als diejenigen der Weizenproteine. Der PV-Wert von Amaranthsamen (4.09) ist doppelt so hoch wie der von Weizen (1,94). Die Kombinationen W : A , 0,75 : 0,25 und 0,64: 0,36 zeigen einen um 45% hoheren PV-Wert als der der Kombination 0,87 : 0,13, der Bhnlich demjenigen der Weizenproteine ist. Daraus wird abgeleitet, da8 die Supplementierung von Weizenmehl mit "Wa1nutacres"-Amaranth bis zu 20% die Proteinqualitat bis zu 45% erhohen kann.


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