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Availability of essential amino acids in corn flour and corn bread

✍ Scribed by El-Shafei, Malak M. ;Abbassi, Mahassen H. ;Bassily, Nargis S. ;Said, Amin K.

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
314 KB
Volume
27
Category
Article
ISSN
0027-769X

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✦ Synopsis

The availability of nitrogen, lysine and 9 essential amino acids was determined in corn before and after baking. Lysine avdibdbility was determined by the growth response method on weaning rats using regression analysis of body weight gain or moisture gain against lysine consumed from corn flour and corn bread. The results show a high correlation between lysine consumed and weight gain or moisture gain (r = 0.95) for rats fed the standard diets for 3 weeks. A good correlation was also obtained for corn bread. The results of lysine availability show that baking greatly improves availability by both ways of calculation.

The availability of nitrogen and essential amino acids were also investigated by the balance trials with rats. Results show that availability values for nitrogen and all amino acids except threonine increased by baking. Data for food intake, weight gain, food efficiency, PER, NPR and true digestibility revealed that baking had little or no effect on nutritive value of corn tested in this investigation.

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