Method for measuring content of suspension in water extract of tobacco raw materials

Abstract

The invention discloses a method for measuring the content of suspension in the water extract of tobacco raw materials. The method comprises the following steps: (1) fetching the water extract of tobacco raw materials during the production process of paper-making reconstituted tobacco, adopting a Karl-Fischer method to measure the extract water content (Cw); (2) adopting a Brix degree meter to measure the Brix degree value (Sc) of the water extract; (3) calculating the content (Css) of suspension in water extract of tobacco raw materials according to a formula: Css(%)=100-Cw-Sc. The provided method has the advantages of short measuring time, high accuracy, high precision, good data repeatability, and high sensitivity, can be used to optimize the extraction, concentration, blending, and using technologies of tobacco raw material water extract, and is capable of improving the purity and quality of water extract.

Description

technical field [0001] The invention belongs to the technical field of reconstituted tobacco leaves, and relates to a method for measuring the content of suspended solids in the water extract of tobacco raw materials. Background technique [0002] Suspended matter refers to solid matter suspended in water, including inorganic matter, organic matter and sediment, clay, microorganisms, etc. that are insoluble in water. Suspended solids often become concealed carriers of microorganisms. The actual production shows that in the water extract with the same density, the more suspended solids, the less active ingredients and the worse the quality. The determination of suspended matter content is a key indicator for extract purity, quality control and extraction process control. The raw materials for the production of reconstituted tobacco leaves include tobacco stems, tobacco powder, shredded tobacco pieces, and even ash sticks, and the raw materials come from a wide range of sour...

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Problems solved by technology

201210210501.3, CN201310416413.3 are based on the absorbance-suspended solids content standard curve for the test of suspended solids in oily sewage, the test takes a long time, and the standard curve needs to be prepared at the same time, which is time-consuming and laborious

CN201410288543.8 is similar to CN201410403317.X. The test process of the two methods is relatively cumbersome and needs to be prepared before the test. Although the drying time of 2h is reduced compared with the traditional oven method, the actual time-consuming is still relatively long. For online There is no real-time quality control and process guidance, and it has little practical significance as an online method

[0004] At present, the test method of suspended solids in the water extract of tobacco raw materials basically adopts the test method of drying and weighing in an oven after filtering the solution, but the test method of drying after filtering takes a long time, the process is cumbersome, and the operation error is relatively large. , the suspended solids in the water extract of tobacco raw materials are easy to combine with soluble polymers and colloidal substances (DCS). The traditional filtration and weighing methods are used to measure, and some colloidal substances are also intercepted as suspended solids. The accuracy of the test results is not enough. Poor precision and poor reproducibility; if the spectrophotometric absorbance method is used, due to the large fluctuations in the composition of tobacco raw materials, the standard working curve needs to be re-made every time the product formula is changed. The actual production shows that even the same raw material formula has large fluctuations. Affect the accuracy, precision and reproducibility of the determination

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