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RAPID SMALL‐SCALE DETERMINATION OF MALT EXTRACT IN BARLEY BREEDING
Author(s) -
Henry R. J.,
McLean B. T.
Publication year - 1984
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.2050-0416.1984.tb04291.x
Subject(s) - refractometer , volume (thermodynamics) , chemistry , chromatography , food science , mathematics , linear relationship , nitrogen , analytical chemistry (journal) , materials science , refractive index , statistics , organic chemistry , physics , thermodynamics , optoelectronics
A simple procedure for the determination of malt extract requiring only 0·5 g of malt is described. A constant volume of hot water is added and the mash is centrifuged rather than filtered. The extract is then estimated directly from a refractometer reading. The relationship between refractometer reading and wort solids was linear and was not found to vary with barley variety or grain nitrogen. The effect of varying the grist/mash ratio was investigated. The method had similar precision to other methods, but was more rapid, making it useful in barley breeding.