Cigarette essence quality detection method

Abstract

The invention relates to a cigarette essence quality detection method. According to the method, a colorimeter is adopted to detect values L, a and b of a cigarette essence standard substance and values L, a and b of a to-be-detected sample; the values L, a and b of the to-be-detected sample are compared with the values L, a and b of the standard substance, and delta(L), delta(a), delta(b) and delta(E) are obtained; a near-infrared spectrometer is adopted to collect a spectrum of the cigarette essence standard substance and a spectrum of the to-be-detected sample, and the collected spectra arepretreated to eliminate noise and correct baselines; in combination with a Gram-Schmidt orthogonalization method, the cigarette essence standard substance is selected to serve as a standard, and the similarity between the cigarette essence to-be-detected sample and the standard substance is calculated; and when the cigarette essence to-be-detected sample meets the relations that the delta(E) is smaller than or equal to 1.0, the similarity n is greater than or equal to 90%, and absolute values of the delta(L), the delta(a) and the delta(b) are all smaller than or equal to 0.5, the detected cigarette essence to-be-detected sample is qualified. The method is objective, easy and convenient to implement, accurate in calculation result, fast in detection process and easy to apply and popularize.

Description

technical field [0001] The invention belongs to the technical field of flavoring essence for tobacco, and specifically relates to a method for detecting the quality of flavoring essence for tobacco by using color difference analysis technology and near-infrared spectrum analysis technology in combination with color difference and similarity. Background technique [0002] Tobacco essence is an important component in the process of flavoring cigarettes, which determines the aroma and aroma of cigarettes. In the cigarette industry, the quality control of tobacco flavors is mainly guided by the industry standard "YC / T 164-2012 Tobacco Flavors", but there are many testing items in this standard, and the testing time is long; some testing items are also subjective. (such as: appearance, miscibility, aroma quality, aroma quality), and in the standard "judgment and re-inspection rules", the above four indicators can be used as important indicators for single-item judgment. Therefor...

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Problems solved by technology

[0003] At present, the detection of the quality of tobacco flavors mainly depends on physical and chemical indicators and sensory indicators. During the detection of physical and chemical indicators, it is difficult to detect some deteriorated tobacco flavors, and the detection takes a long time; while the evaluation of sensory indicators contains Personal subjectivity, such as visual observation and evaluation of appearance and miscibility, but because different individuals have different perceptions of color difference, and when encountering samples with a high degree of discoloration, there may be a large error between the result and the actual quality; The fragrance method is used to evaluate the quality of aroma. Smell is also subjective and limited by the sensitivity of the nasal cavity. When the sample of tobacco flavor has slightly deteriorated, there may be a large error between the result and the actual quality.

[0004] The patent "A Method for Quickly Identifying the Quality of Tobacco Flavor Using Triacetin as a Solvent" (CN201710399487) can quickly judge the quality of tobacco flavor, but this report only targets flavors with a chromaticity value below 20 (such as lemon essential oil, angelica root essential oil or lemon verbena essential oil), the types of tobacco flavors identified by it are less representative, and the samples need to be mixed with glycerol triacetate for detection, so it is difficult to evaluate objectively and accurately Actual Quality of Tobacco Flavors

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