BC Ministry of Health
Document 32459
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Group Research & Development Centre,
Brltish-American Tobacco Co. Ltd.,
SOUTHAMPTON.
8~h Ma~ch 1979.
THE EFFECTS OF DIAI~ONIUM PHOSPHATE ON BURLE¥ PRT
(Report No. RD.1661 Restricted)
SI~MAR¥
The effects o£ diammonlum phosphate (DAP) on Bu~ley PRT incorporated
in a blended cigarette have been studied following a previous evaluation
of DAP-treated flue-cured FRT in a fluecured blend. .
In process ~erms, while no problems were encountered when DAP was
incorporated in flue-cured PRT made on the minlature Fourdrinier
machine, with Bu~ley tobacco DAP increased the extract viscosity and
it was not possible to achieve impregnation target levels at the highest
level of DAP incorporation.
Burley PR~ products containing up to 8% DAP were evaluated in
cigarettes at the 100% level and at the 30% level in PALL MALL (5uisse)
whole blend. Effects on smoke chemistry were less pronounced than
observed p~evlously for flue-cured PRT, probably because of the high
nitrogen conten~ of Burley eobacco. However DAP produced a reduction
• in_forma~ehyde-del-~ver~, a marked increase in hydrogen" cyanide delivery
and also increased puff number and NM~Z response._____-
BAT Industries document for Province of British Columbia 13 November 2000
BAT INDUSTRIES
00290457
Results from O/~P and a ~OODKOSE panel evaluation indlca~e ~hat"
inclusion of DAP in PRT, although possibly imparting an off-taste,.
enhances blended smok~ characteristics.
The O/%T yield of peak 41 (2,5-di=ethylpyrldiue, and 2,5- and 2,6-
dimethylpyrazlnes) from cigarettes made wlthlOOX PRT was only sllghtly
increased by incluslon of DAP. In contrast, when PRT was incorporated at
the 30Z level in eigarettes~ peak 41 was considerably enhanced. This
indicates that the DAP in the PRT may have interacted w~th the sugars
present in the tobacco blend and it is proposed to exmnlne this further
in the current investigation of the chemical changes occurring during the
primary processing of tobacco.
BAT Industries document for Province of British Columbia 13 November 2000
BAT INDUSTRIES
00290458
