منابع مشابه
A Colorimetric Procedure for the Measurement of Dimethyl Sulfide in Water, Wort, and Beer
A colorimetric method is presented for the quanti tat ive determination of dimethyl sulfide (DMS) in water, wort, and beer. The method is based on the formation of a complex between DMS and sodium nitroprusside. The DMS-sodium nitroprusside complex which is formed under alkaline conditions turns pink when the solution is acidified. The pink complex has an absorption maximum at 520 nm. Details o...
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Analysis by gas-liquid chromatography of the trimethylsilylated sugar residues of purified vesicular stomatitis virus grown in L cells or chick embryo cells revealed the presence in the whole virion of four hexoses (glucose, galactose, mannose, and fucose), two hexosamines (glucosamine and galactosamine), and 34 to 40% neuraminic acid. The isolated viral glycoprotein was devoid of galactosamine...
متن کاملEvaluation of beer deterioration by gas chromatography-mass spectrometry/multivariate analysis: a rapid tool for assessing beer composition.
Beer stability is a major concern for the brewing industry, as beer characteristics may be subject to significant changes during storage. This paper describes a novel non-targeted methodology for monitoring the chemical changes occurring in a lager beer exposed to accelerated aging (induced by thermal treatment: 18 days at 45 °C), using gas chromatography-mass spectrometry in tandem with multiv...
متن کاملCarbohydrate composition of raw and extruded pulse flours
0963-9969/$ see front matter Published by Elsevier doi:10.1016/j.foodres.2009.09.035 * Corresponding author. Tel.: +1 510 559 5652; fax E-mail address: [email protected] (J. De J. Extrusion cooking technology is commercially used in the fabrication of a variety of snack-type and ready-to-eat foods made from cereal grains. However, with the exception of soybean, pulses such as lentil, dr...
متن کاملCarbohydrate Composition in Relation to Pasture Quality
THE TERM “pasture quality” is a measure of the ability of the pasture to provide the nutritive requirements of the grazing animal. Many plant constituents contribute to this policy but only one group, the carbohydrates, will be considered here. At present probably the only reliable and meaningful method of assessing the relative nutritive value of different pastures is by comparing actual anima...
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ژورنال
عنوان ژورنال: Journal of the Institute of Brewing
سال: 1953
ISSN: 0046-9750
DOI: 10.1002/j.2050-0416.1953.tb02720.x