Wine Analysis Applications in Asia & Middle East
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Determination of vanillin, sinapic, coniferyl, and syringic aldehydes in brandies and brandy spirits
The presence or absence of aromatic aldehydes (vanillin, sinapic, coniferyl and syringic aldehydes) in a sample and also their weight content and proportion allows determination of authenticity and quality of brandies and brandy spirits, and revealing a counterfeit. Together with aromatic aldehydes, it is possible to determine phenolcarbolic acids, such as sinapic, syringic, ferulic, salicylic, cumaric, vanillic, ellagic, p-hydroxybenzoic, caffeic, gallic, protocatechuic. Identification and weight content of these ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of D- and L-isomers of tartaric and malic acids in wines, wine materials, and food additive
Naturally occurred is predominantly L-form of tartaric acid whereas its D-form and the relevant racemic mixture can be artificially synthesized. Generally, artificial acidification of wine with tartaric acid is allowed by OIV, but only pure L-form must be used for this purpose. Thus the analysis of tartaric acid isomers either in food additives or directly in wine can be an important parameter in clarifying any deviations in wine production. Analysis of isomers of malic acid is also within the necessary ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of amino acids in beer and wort
INTRODUCTION Free forms of amino acids in beer originate mostly from malt. The following method enables fast quantitative determination in beer and wort of the following free amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Total content of amino acids is fdetermined after hydrolysis of ...
By Lumex Instruments Office in Beijing, CHINA.
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