Fragrance-carrying supramolecular gel based on citric acid nicotine salt gelling agent

Abstract

The invention belongs to the field of supramolecular gel, and particularly relates to fragrance-carrying supramolecular gel based on a citric acid nicotine salt gelling agent. The gel comprises a citric acid nicotine salt gelling agent, and a flavor substance and an organic solvent dispersed in the citric acid nicotine salt gelling agent. Different from conventional polybasic carboxylic acid nicotine salt, in the citric acid nicotine salt gelling agent, carboxyl groups, pyridine nitrogen and pyrrole nitrogen form heterogeneous synthons, besides, carboxylic acid dimer (hydrogen bond ring) homogeneous synthons (shown in figure 1) are also formed among the carboxyl groups, and supramolecular structure units formed by the synthons are self-assembled into a stable fiber network, so that the number of free carboxyl groups is reduced or even free carboxyl groups do not exist, the chance of generating volatile monocarboxylic acid due to dehydration and decarboxylation in a preheating stage or a low-temperature heating stage of the heated cigarette is inhibited, and the phenomena of small smoke amount, mouth scalding by smoke, obvious sour feeling and the like caused by slow accumulation of moisture and acidity at the front section of smoking are reduced.

Description

technical field [0001] The invention belongs to the field of supramolecular gels, in particular to a fragrance-carrying supramolecular gel based on nicotine citrate salt gelling agent. Background technique [0002] Basic nicotine can react with carboxyl groups of organic acids to form nicotine carboxylate. Nicotine contains a pyridine ring and a pyrrole ring. Among them, the pyrrole ring nitrogen is more basic and tends to react with the carboxyl group of a carboxylic acid to form nicotine salts, while the pyridine ring nitrogen is weaker in basicity and cannot ionize basically. Binds to carboxylic acids through non-covalent interactions such as hydrogen bonds. Tobacco leaves naturally contain various carboxylic acid nicotine salts. According to the acid-base ratio of nicotine salts, nicotine salts can be divided into 1:1 acid-base ratio, 2:1 acid-base ratio, and 3:1 acid-base ratio nicotine salt. Among them, common nicotine carboxylates include nicotine tartrate, nicotine...

AI Technical Summary

Problems solved by technology

[0010] Although nicotine salts have been widely used in e-cigarette liquids, there are still the following main sensory problems in e-cigarettes containing nicotine salts: when nicotine salts are heated and decomposed to form free nicotine and delivered to the atomized vapor, puff-by-puff nicotine The release behavior is inconsistent with the release behavior of the aromatizing ingredients, and it is difficult to achieve the synergistic delivery of the key aromatizing ingredients and nicotine. While bringing nicotine physiological satisfaction, it cannot bring the matching characteristic fragrance, resulting in the interaction between nicotine and flavoring substances. The sensory sensations are strong and weak, covering each other or even repelling each other, especially for volatile characteristic aroma substances, because they cannot be released stably throughout the smoking process (usually the release amount gradually decreases mouth by mouth), this sense of incongruity especially obvious

Another common problem with e-cigarettes is that during the storage of e-liquid or pods, there will inevitably be a problem of volatilization and loss of flavor components. Even closed pods also have the problem of deterioration of flavor substances.

At present, although microcapsule technology can be used to encapsulate volatile aroma components, since microcapsules mostly use sugars such as cyclodextrin as wall materials, there will be a problem caused by the wall material adhering to the heating element at the heating temperature of the electronic cigarette. burnt smell and discomfort

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