Mainstream smoke menthol delivery after using different flavour application methods in filter production
Menthol without a doubt is one the most popular flavours in the cigarette industry. It is applied to the filter, tobacco and even packaging. Indeed, menthol cigarettes almost certainly have mentholated filters which have been enriched with the flavour one way or the other. To keep the customer satisfied with the favoured product the taste of mentholated cigarettes has to be the same whenever the customer picks up another pack. Hence, it is crucial to have a very stable amount of menthol in the filter from the moment of production to transportation and storage all the way to the final analysis on the cigarette machine.
In this study we quantitatively analysed mainstream smoke of a standardised tobacco column attached to a standardised filter containing the same concentration of either encapsulated menthol, directly injected pure menthol crystals or menthol solution in propylene glycol. Smoking was done by the ISO method using a rotary Borgwaldt RM20D smoking machine and menthol analyses were performed on Agilent 5973N GC-MS equipment.
This study also compared different packaging materials used for flavoured filter storage. We used multilayer composite polyamide/polyethylene, pure polypropylene and pure polythethylene bags. The quantity of menthol in different filters was checked 24 h and 48 h post production. Then filters were kept in different packaging in standard warehouse conditions for 90 days and menthol extracted from them every 30 days for comparative analysis.