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Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 109, A-28

The relation of the quality of aromatic tobacco to their chemical constituents

RYU M.H.; KIM Y.O.; SHON H.J.; SYHDONIDIS G.D.
Korea Ginseng and Tobacco Research Institute, Kyungbuk, South Korea.
The relation of the chemical constituents to the quality of aromatic leaves were compared between two groups of samples with different quality, 1) at different growing environments of conventional late and early transplanting in Korea, and planting in Greece, 2) by different curing variables of bulk-curing, sun-curing and air-curing. The leaf quality evaluated by price, and the content of volatile organic acids, alcohols and esters were highest in Greek culture, followed by early and late transplanting in Korea in decreasing order. The content of petroleum ether extracts (PEE), volatile organic acids (VOA) and total nitrogen showed significant positive correlation with price, whereas a negative correlation was found between ash content and price. Air-cured dark brown leaves of poor quality did not differ significantly from the good quality leaves in the content of PEE, VOA and volatile neutrals, but showed much higher levels of nitrogens, ash and pH, but low sugar. The content of PEE, volatile organic acids and volatile neutrals decreased with the higher bulk-curing temperature. The equation, ((VOA (mg/100g) + PEE (%))/(ash (%) + pH) ) x 10, was found to be easily applicable for the quality evaluation of aromatic tobaccos.