Predication method for NNK release amount of mainstream smoke in flue-cured tobaccos

Abstract

The invention relates to a predication method for NNK release amount of mainstream smoke in flue-cured tobaccos. The method comprises performing sample pretreatment on to-be-tested flue-cured tobaccos by three steps which are manual piece tearing, peduncle removal and shredding; detecting 6 chemical components (rutin, tobacco shred volatile alkali, linoleic acid, total nitrogen, malonic acid and scopoletin) of the to-be-tested sample; calculating network values of 9 nodes of a hidden layer according to measurement results of the 6 chemical components and the coefficient of each input layer of a model; converting the network values of the 9 nodes of the hidden layer into output values of the 9 nodes of the hidden layer; performing calculation according to the output values of the 9 nodes of the hidden layer and the coefficient of each output layer of the model, and obtaining the release amount predication values of the smoke NNK. According to the method, constant quantity detection of the 6 tobacco chemical components is performed on the to-be-tested sample, the NNK content of the smoke of the flue-cured tobaccos can be predicated through the model, effective pre-judging on the possible accumulation content of NNK in cigarette end products formed in the future can be performed through flue-cured tobacco raw materials, and accordingly raw material selection in the production process is guided.

Description

technical field [0001] The invention relates to a method for predicting the release amount of NNK [4-(methylnitrosamine)-1-(3-pyridyl)-1-butanone] in mainstream smoke of uncured tobacco leaves, and belongs to the technical field of tobacco. Background technique [0002] 4-(methylnitrosamine)-1-(3-pyridyl)-1-butanone (NNK) in the smoke components is listed as one of the seven harmful components of cigarette smoke for evaluating the safety of cigarettes . At present, my country has established national standards for the determination of NNK in mainstream cigarette smoke. However, usually the determination of NNK content in flue gas requires cumbersome steps such as rolling the sample, suction and capture by smoking machine, and pre-treatment of the captured material for sampling. Relatively speaking, the determination steps of some constant chemical components in tobacco are relatively simple. The TSNAs in smoke mainly come from some chemical components in tobacco leaves, s...

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Problems solved by technology

However, according to a large number of literature and related materials, there are still few studies on the relationship between such complex change systems.

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