Fine-cut tobacco blends for handmade cigarettes (RYO/MYO) are gaining popularity not only because of their price advantage, but also because of the perceived possibility of “more controlled” use, which positions them as a preferred choice among certain consumer groups. In response to this demand, the modern production of RYO/MYO tobaccos relies on blends with controlled physical, chemical and microbiological characteristics, ensuring stable product quality. A study of seven commercial brands of RYO/MYO tobaccos distributed on the Bulgarian market was conducted. High content of nicotine (2.03- 3.33%), reducing sugars (11.50-15.72%) and nitrogen (2.16-2.82%) was found, as well as the presence of glycerol and heavy metals, within the quantitative limits typical for the regarded tobacco product type. Despite the increased moisture content (14.16-21.60%), the low water activity gives the products relative microbiological stability. The analyses show low microbial contamination and a statistically significant negative correlation between microorganism abundance and water activity. The results obtained highlight the need for continued research on RYO/MYO tobaccos in view of their complex quality, safety and perceived lower risk compared to factory cigarettes. Such scientific evaluation is essential to better understand the actual characteristics and potential impact of these products on consumers, especially given their increasing market presence.
Nikolov et al. (Mon,) studied this question.