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GRAIN QUALITY RESEARCH COMMITTEE
Author(s) -
Trolle Birger,
Pedersen Holger
Publication year - 1971
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1971.tb03381.x
Subject(s) - citrinin , moisture , fodder , mycotoxin , food science , aflatoxin , fusarium , agronomy , whole grains , penicillium , flora (microbiology) , water content , biology , environmental science , botany , materials science , bacteria , composite material , engineering , geotechnical engineering , genetics
The results of collaborative research carried out in Denmark since 1963 have shown that the microflora of the stored material is of paramount importance in relation to grain quality, whether the grain is to be used for malting or for fodder. The composition of the fungal flora depends on the moisture activity of the stored product: whole barley at a moisture content of 14% has a moisture activity which just permits the survival of the fungi characteristic of sound newly‐harvested grain. Feeding qualities are impaired when barley is stored at more than 17% moisture, with associated analytical changes in protein digestability and in biological value of the protein; gushing in beer is on occasion associated with the presence of Fusarlum in the stored barley. Although aflatoxin seems to be of no practical importance in Danish conditions, the mycotoxin citrinin (from Penicillium viridicatum ) may be significant in fodder grain which has been allowed to deteriorate in damp storage.