Journalartikel

Jahr der Veröffentlichung: 1985

Seiten: 91-103

Zeitschrift: Zeitschrift für Tierphysiologie, Tierernährung und Futtermittelkunde = Journal of animal physiology and animal nutrition

Bandnummer: 53

Heftnummer: 1-2

ISSN: 0044-3565

Verlag: Parey

Abstract: 
Triticum aestivum cvv. Disponent and Stramm were germinated under controlled conditions for 120 and 168 h. The influence of germination on the protein content and the protein composition was examined by chemical analysis, and the effect of the changed protein composition on the nutritive value was tested in a metabolic experiment with rats. In consequence of the loss of kernel dry matter by respiration during germination the protein content of both varieties increased by about 7-8% on a dry matter basis. In a comparison of the 2 varieties the protein fractions of cv. Disponent (kernel protein content without germination = 12.4% in dry matter) showed more changes in the course of germination than those of cv. Stramum (kernel protein content without germination = 16.4% in dry matter). In the 1st 120 h of germination the reserve proteins, and especially the lye soluble proteins as compared with the alcohol soluble proteins, showed strong disintegration. This caused a considerable rise in the water-soluble N components and in a smaller way also to a rise in the unsoluble and the salt-soluble N fraction. Amino acid analysis showed that, with the exception of methionine in c.v Disponent, the parts of the essential amino acids in the hydrolyzed protein increased during germination. The greatest changes were found in cv. Disponent. Lysine showed the highest increase of 38% (cv. Disponent) and 25% (cv. Stramm), respectively, after a germination time of 168 h. In the germinated material of both varieties only the content of glutamic acid in the hydrolyzed protein was markedly reduced. In cv. Disponent the content of methionine was also reduced by germination. The criteria in the metabolic experiment with growing rats were: feed intake, weight gain, feed conversion efficiency (= gram feed intake per gram of weight gain), protein efficiency ratio, N balance and N balance per gram of N intake. Most criteria used showed statistically significant evidence of better protein quality in the germinated grains. With the exception of the criteria N balance and N balance per gram of N intake in the case of cv. Stramm, the best values were determined for the 120 h germinated samples. On the whole in the metabolic trial the differences between the non-germinated and the germinated samples were greater for cv. Disponent than for cv. Stramm.

Harvard-Zitierstil: ULLRICH, I., JAHNDEESBACH, W. and PALLAUF, J. (1985) THE INFLUENCE OF GERMINATION ON THE PROTEIN-CONTENT AND NUTRITIVE-VALUE IN WHEAT KERNELS, ZEITSCHRIFT FUR TIERPHYSIOLOGIE TIERERNAHRUNG UND FUTTERMITTELKUNDE-JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 53(1-2), pp. 91-103

APA-Zitierstil: ULLRICH, I., JAHNDEESBACH, W., & PALLAUF, J. (1985). THE INFLUENCE OF GERMINATION ON THE PROTEIN-CONTENT AND NUTRITIVE-VALUE IN WHEAT KERNELS. ZEITSCHRIFT FUR TIERPHYSIOLOGIE TIERERNAHRUNG UND FUTTERMITTELKUNDE-JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION. 53(1-2), 91-103.