Library Catalogue

Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104225
Title On the occurrence of growth inhibiting substances in rye
show extra info.
door G.W. Wieringa
Author(s) Wieringa, G.W.
Publisher Wageningen : Veenman
Publication year 1967
Description 68 p
Series title Publicatie / Instituut voor bewaring en verwerking van landbouwproducten (156)
Notes Proefschrift Wageningen
Tutors Hartog, Prof. Dr. C. den ; Iwema, Prof. Ir. S.
Graduation date 1967-02-24
Dissertation no. 405
Author abstract show abstract
The cause of the decreased food intake and lower growth rate of animals fed on rye was investigated. With rats it was proved that the causative agent was soluble in petroleum ether and acetone. The growth inhibitor was identified as a mixture of 5-n-alkyl resorcinols with odd numbered side-chains of 15-23 C atoms, and of smaller amounts of 5-alkenyl resorcinols.

No difference in growth inhibition could be detected from the wheat resorcinols found by Wenckert et al. But the effect of synthetic 5-n-pentadecyl resorcinol was only 50-60 % of that of the grain resorcinols, however. This could not be due to alkenyl resorcinols in wheat and rye, because hydrogenation of the grain resorcinols did not alter the growth inhibition.

A fluorometric method for the analysis of 5-alkyl resorcinols was developed. By this method and thin-layer chromatography the alkyl resorcinols could be found in the pericarp. So the resorcinol content of rye proved to be proportional to the surface area of the grain and thus dependent on grain size.

Young rats were more susceptible to grain resorcinols than older ones. The decreased food consumption of resorcinol-fed rats was not caused by any unappetizing taste of rye oil or rye resorcinols.

The growth of pigs on rations containing 50 % rye oil or an equivalent amount of rye oil, was 11-12% lower than on a 50% barley ration. No differences in harmfulness could be detected between fresh rye and rye stored for a year.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,405
FORUM ; STACKS ; NN08202,0405
FORUM ; STACKS ; NN06016,0156
Keyword(s) (cab) botany / secale cereale / rye / pigs / poultry / fowls / muridae / mice / rats / cereals / zoology / fodder crops / animal nutrition / toxic substances / toxins / plants
Categories Cereals / Plant Growth Regulators
Publication type PhD thesis
Language English
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