| Online estimation of assimilable nitrogen by electrical conductivity measurement during alcoholic fermentation in enological conditions. | |
| | |
MedLine Citation:
|
PMID: 17434425 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The monitoring of alcoholic fermentation under enological conditions is currently poor due to the lack of sensors for online measurements. Such monitoring is currently limited to the measurement of CO(2) production or changes in density. In this study, we determined the potential value of measuring electrical conductivity. We showed that this measurement is related to the assimilation of nitrogen, which is typically the limiting nutrient, and directly correlated to ammoniacal nitrogen assimilation at any percentage of ammoniacal nitrogen in the medium. We also used electrical conductivity for the very precise monitoring of the kinetics of nitrogen assimilation after the addition of a pulse of diammonium hydrogen phosphate (DAP) during fermentation. The impact of initial conditions (e.g., must composition, grape variety, pH) remains unclear, but the robustness, precision and low price of the sensor used justify further studies of the potential value of measuring electrical conductivity on the pilot and industrial scales. |
| | |
Authors:
|
Sophie Colombié; Eric Latrille; Jean-Marie Sablayrolles |
Related Documents
:
|
20407975 - Addiction in pregnancy. 6365495 - Marijuana and alcohol use in pregnancy. 6867145 - Exposure to ethanol during pregnancy in mice: potential importance of dose for the deve... 2330235 - Effect of prenatal alcohol exposure on growth and morphology of offspring at 8 months o... 3601265 - Fetal death following antepartum fetal heart rate testing: a review of 65 cases. 10716745 - Large-scale double-staining of rat fetal skeletons using alizarin red s and alcian blue. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of bioscience and bioengineering Volume: 103 ISSN: 1389-1723 ISO Abbreviation: J. Biosci. Bioeng. Publication Date: 2007 Mar |
Date Detail:
|
Created Date: 2007-04-16 Completed Date: 2007-05-16 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100888800 Medline TA: J Biosci Bioeng Country: Japan |
Other Details:
|
Languages: eng Pagination: 229-35 Citation Subset: IM |
Affiliation:
|
INRA, UMR Sciences pour L'oenologie, 2 place Viala, 34060 Montpellier cedex 1, France. scolombi@bordeaux.inra.fr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Ammonia
/
metabolism Electric Conductivity Ethanol / metabolism* Fermentation Hydrogen-Ion Concentration Kinetics Nitrogen / analysis*, metabolism Online Systems Phosphates / metabolism Saccharomyces cerevisiae / growth & development, metabolism Wine / analysis* |
| Chemical | |
Reg. No./Substance:
|
0/Phosphates; 10124-31-9/ammonium phosphate; 64-17-5/Ethanol; 7664-41-7/Ammonia; 7727-37-9/Nitrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Characterization of prolyl oligopeptidase from hyperthermophilic archaeon Thermococcus sp. NA1.
Next Document: Hydrogen production by fermentation using acetic acid and lactic acid.