6 results about "N nitrosamines" patented technology

A method for adsorbing tobacco-specific nitrosamines from a tobacco absolute. The method comprises: 1) diluting a tobacco absolute with a solvent; 2) adding a zeolite to the diluted tobacco absolute for first stirring and adsorption; 3) subjecting the tobacco absolute, which has been adsorbed with zeolite, to first centrifugation and then first filtration to obtain a first filtrate; 4) adding a molecular sieve to the first filtrate for second stirring and adsorption; 5) subjecting the tobacco absolute, which has been adsorbed with a molecular system, to second centrifugation and then second filtration to obtain a second filtrate; and 6) concentrating the second filtrate under reduced pressure until the solid content thereof is the same as that of the tobacco absolute, so as to obtain a tobacco absolute that has been concentrated under reduced pressure, wherein the content of tobacco-specific nitrosamines in the tobacco absolute thta has been concentrated under reduced pressure is less than 18000 ng / g. In addition, a tobacco absolute obtained by the method and an atomizing matrix comprising the tobacco absolute are provided.

An electrochemical cell includes (a) an anode including a first liquid permeable carbon cloth carbon electrode and a first current collector, (b) a cathode including a second liquid permeable carbon cloth electrode and a second current collector, (c) a separator made from an insulating material, and (d) a current source applying an electrical current to said anode and said cathode.

A method for determining tobacco-specific nitrosamines (TSNAs) in cigarette smoke using one-step clean-up coupled with LC-MS / MS is provided, including the following steps: collecting a particulate matter of mainstream cigarette smoke with a Cambridge filter pad, mixing the particulate matter of mainstream cigarette smoke, an internal standards solution and water in a 50 mL plastic centrifuge tube, and vortexing the resulting mixture at room temperature to allow extraction; transferring an extraction solution after filtration to a new centrifuge tube, adding dichloromethane, and vortexing the resulting mixture; centrifuging to collect a dichloromethane extraction solution in a lower layer to another centrifuge tube, and placing the centrifuge tube in a water bath to remove dichloromethane; dissolving the resulting extraction solution in water, and transferring the resulting solution to an autosampler vial for LC-MS / MS analysis. The method has better separation and sensitivity, simple operations, and wide adaptability.

The invention relates to the technical field of tobacco auxiliary material processing, in particular to a vinasse-containing tobacco filter tip and a preparation method thereof, and a main body of the vinasse-containing tobacco filter tip is composed of an upper filter tip body, a vinasse filter tip body and a lower filter tip body in sequence. The vinasse filter tip rod is prepared from 50 parts of modified vinasse, 4-6 parts of a humectant and 10-15 parts of cellulose acetate fibers. The modified vinasse is obtained by performing low-temperature vacuum drying, inert gas protection and molecular distillation dealcoholization on the modified vinasse to retain natural bouquet components, embedding the modified vinasse with a porous carrier, performing cross-linking modification on the modified vinasse and natural plant tannic acid, and performing spray granulation. The structure enables the vinasse functional layer to be located in the middle of the smoke channel, high-temperature damage is avoided, and slow release of fragrance and gradient adsorption of noxious substances are achieved. Tannic acid can selectively intercept harmful substances such as nicotine and nitrosamine, and the porous carrier and the fiber network cooperate to enhance physical adsorption of tar and carbon monoxide. According to the invention, high-value utilization of wine-making wastes is realized, the natural aroma enhancement and harm reduction functions are realized, the process compatibility is strong, the sensory harmony is good, and the environmental protection and industrialization values are remarkable.

The application discloses tobacco extract, atomized liquid and a preparation method and application thereof, and belongs to the technical field of electronic atomization products. The preparation method of the tobacco extract comprises the following steps: taking tobacco water extract to perform thermal decomposition, electrodialysis treatment and adsorption treatment, and preparing the tobacco extract. The tobacco extract is prepared by taking tobacco water solution to perform cracking, electrodialysis treatment and adsorption treatment. The cracking can enrich volatile aroma components, avoid the influence of macromolecules such as polysaccharides and proteins, and reduce the generation of harmful substances such as tar. The electrodialysis can effectively remove ions. The adsorption treatment can further purify the tobacco extract, reduce the generation of nitrosamine substances, ensure the atomization performance and sensory experience of the tobacco extract in the case of no ethanol residue and ethanol contact, and solve the problem that the safety or use of the tobacco extract is limited due to ethanol residue or ethanol contact.

The present application belongs to the field of smokeless tobacco. In order to reduce the influence of tobacco products on the surrounding environment and human health, the prior art uses tobacco products which are inconvenient to smoke, do not conform to the consumption habits, and have a poor smoking experience. In order to solve the above problems, the present application provides a processing method of tobacco products and a tobacco smoking method. The present application uses tobacco dry leaves obtained by treating fresh tobacco leaves through fixation and rapid drying technology as raw materials, forms superfine powder through grinding processing, and prepares tobacco superfine powder food into a body, which is sterilized and loaded into special tools for smoking. The tobacco superfine powder food prepared by the present application still maintains the smoking method of traditional tobacco by means of special smoking appliances, is easy to be accepted, does not produce smoke in the smoking process, does not contain special nitrosamine of tobacco products, has good safety, and has low environmental impact.