fulltext.study @t Gmail

Ochratoxin A removal during winemaking

Paper ID Volume ID Publish Year Pages File Format Full-Text
18219 42714 2006 5 PDF Available
Title
Ochratoxin A removal during winemaking
Abstract

This work aims to investigate the performance of 20 strains of Saccharomyces sensu stricto to remove ochratoxin A (OTA) during vinification. Each strain was inoculated in triplicate in 10 mL of white must with a natural OTA content of 1.58 ng/mL, and again in the same must with the addition of OTA, to reach a total content of 7.63 ng of OTA/mL. This microvinification trial was performed at 25 °C for 90 days. The OTA content and the ethanol content of the wines were assayed; the OTA content of the lees was also analysed separately. The OTA content in wines produced from the naturally OTA-containing must varied from 0.143 to 0.950 ng of OTA/mL (mean 0.498 ng of OTA/mL). The OTA content in wines obtained from the must with the addition of OTA varied from 1.270 to 2.448 ng of OTA/mL (mean 1.661 ng of OTA/mL). The OTA content in lees varied from 1.537 to 7.456 ng of OTA/mg of biomass (wet weight). Interestingly, this last result indicates that OTA-removal from grape must was probably carried out by the yeast cell wall, acting like a sponge. A role of the parietal yeast mannoproteins in OTA adsorption during winemaking was hypothesised and the implications of these results in the winemaking of OTA-contaminated musts were discussed.

Keywords
Saccharomyces sensu stricto; Adsorption; Lees; Ochratoxin A removal; Parietal yeast mannoproteins; Vinification
First Page Preview
Ochratoxin A removal during winemaking
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 40, Issue 1, 6 December 2006, Pages 122–126
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us