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TSNA TASK FORCE Presented by Gary Palmer 2002 CORESTA Conference, New Orleans. Preliminary Meeting April 18, 2002 F. W. Rickard Seed Farm Winchester, KY . TSNA TASK FORCE. Preliminary Resource Team Meeting April 18, 2002 F. W. Rickard Seed Winchester, KY . Gary Palmer
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TSNA TASK FORCEPresented by Gary Palmer2002 CORESTA Conference, New Orleans Preliminary Meeting April 18, 2002 F. W. Rickard Seed Farm Winchester, KY
TSNA TASK FORCE • Preliminary Resource Team Meeting • April 18, 2002 • F. W. Rickard Seed • Winchester, KY
Gary Palmer University of Kentucky Cliff Bennett U.S. Smokeless Tobacco Anna Wiernik Swedish Match Lowell Bush University of Kentucky Christian de Roton Altadis - Institut du Tabac Hitoshi Saito Japan Tobacco Inc. Dale Hill Philip Morris USA George Scott Universal Leaf Tobacco Company CORESTA RESOURCE TEAM
OPENING REMARKS • Martin Ward (BAT), President of the CORESTA Scientific Commission • Explanation of the resource team assignments for proposed task forces: • Tobacco seed integrity • TSNA
TSNA Resource Team Assignment • Determine if objectives could be proposed and referred to the Scientific Commission for consideration in the development of a task force to advance the science and efforts to reduce TSNA’s in tobacco leaf
Discussions • Current scientific understandings and factors that contribute to TSNA levels in tobacco • led by Lowell Bush
Discussions • Methods of detection of TSNA collaborative study - TSRC • led by Cliff Bennett • Alkaline methylene chloride extraction method • Buffer extraction method • For both methods, recovery level about the same
General review of scientific studies and surveys on TSNA conducted to date: • Farmer surveys in France, Japan and USA • No standard survey protocol, therefore difficult to compare results • No standard approach for sampling for TSNA determinations: • Time and cost • Lack of guidelines
General Review (Cont’d) • Standards for levels of nornicotine in burley vary depending on seed origin: • USA 20% lowered to 15% • France 15% • Japan 5%
General Discussion • Burley curing management investigation and TSNA levels vs. leaf quality needs.
General Consensus • Significant variations, seed source, curing, post curing management, etc. make comparison of results and understandings difficult
Proposed Objectives • Develop a standardized nornicotine screening protocol so that baseline levels of nornicotine are comparable in tobacco seed varieties used by investigators • Develop guidelines or suggested critical survey questions for farmer practice surveys so that results can be compared within and between tobacco origins
Proposed Objectives • Develop a collaborative study to investigate standard deviation for moisture content within farmer marketing packages among origins • Develop a collaborative study which uses hobo loggers or a suitable substitute to collect curing conditions and possible impact of TSNA levels for tobacco of diverse origins and curing environments. Attempt to standardize placement of equipment and sample protocols
Assignment • Dale Hill • Requested that the Scientific Commission consider current difficulties with, and provide guidance for, development of a valid sampling regime to measure TSNA’s at different stages of the crop
Assignment • Lowell Bush • Determine standards being used in different countries and types of tobacco • Determine protocol used for nornicotine determination in seed producing plants
Assignment • Christian de Roton • Summarize Curing regimes for burley and dark air cured tobacco that maintain quality while minimizing TSNA
Assignment • Anna Wiernik • Explore factors influencing TSNA accumulation during storage • Question: Is observed increase of TSNA-content during storage of baled tobacco due to microbial activity or other mechanisms?
TSNA TASK FORCE MEETING Tuesday 24 Sept 17:00-17:30 Tulane Conference Room