作者: 翠盖调味研发团队
出版: 广东独味有限公司
最后更新: 2025年10月30日

呼出气溶胶云:感官冲击
随着电子液体风味制造行业的迅速发展,对真实而富有冲击力的水果风味的需求始终居于首位。然而,制造商与消费者共同面临的一个持续而令人困扰的难题,是偶尔出现的——且往往难以预料的——问题。 dry mouth (xerostomia) and an excessively harsh throat hit when using certain fruit-flavored e-liquids. While these sensations are often broadly attributed to the base ingredients, a deeper, more technical analysis reveals that specific flavoring components, particularly certain organic acids and the inherent properties of the primary e-liquid carriers, play a critical, interwoven role.
本文将超越常见的解释,提供一份清晰、权威且以化学为核心的剖析,为高阶风味配方设计及品质控制提供关键洞见。
在分析具体风味化合物之前,须先确立由主要稀释剂——丙二醇(PG)与植物甘油(VG)——所提供的化学背景。这两者的相互作用,为后续任何感官体验,既可能温和,也可能刺激,奠定了基础。
丙二醇(PG)与植物甘油(VG)均被归类为 humectants——具有强烈吸水性的物质。这一特性被称为 hygroscopicity, is key to their function in e-liquids, as they effectively “pull” water molecules from the surrounding air and condense them into a visible, inhaled aerosol.
理解这种干燥感的本质至关重要,它是一种 physical, osmotic effect, not a systemic dehydration, though adequate water intake is always recommended. This physical property of the base, however, is magnified when certain fruit flavors are introduced.
丙二醇亦是传递传统令人满意的“喉感”体验的主要成分,独立于尼古丁。其较低的粘度与更高的挥发性,使其更易雾化并深入气道。此外,它是一个 superior solvent for flavor compounds compared to VG, meaning a high-PG blend will present flavor and irritation molecules more effectively to the throat’s sensory receptors. A higher PG concentration inherently intensifies the delivery of any irritating flavor molecule.
在某些水果风味中,最关键的化学因素在于喉感的差异,主要取决于其所含的 organic acids used to achieve a realistic “sour” or “tart” profile. These acids are naturally occurring in fruits and are essential to capturing profiles like green apple, citrus, berries, and especially sour candies.
Malic Acid is the organic acid most frequently responsible for the sharp, tartness associated with fruits like apples, cherries, and sour candies. In flavor formulation, it is used to give a distinct “pucker” effect.
在水果配方中常用的其他有机酸也会引起刺激,虽其普遍性与强度各异:
| 有机酸 | 风味轮廓贡献 | 主要刺激机制 |
| 苹果酸 | 青苹果、酸糖果与樱桃 | 对呼吸上皮的直接化学刺激,已被列为呼吸道刺激物。 |
| 柠檬酸 | 柠檬、青柠、橙子与浆果的酸涩 | 直接化学刺激,已被健康机构列为潜在吸入危害。 |
| 酒石酸 | 葡萄,酒香般的酸涩 | High acidity leading to strong chemical irritation. |

酸性刺激路径信息图
浓缩香精中所用的溶剂(区别于PG/VG基础液)亦对喉感产生重要影响。许多香精,尤其那些具有复杂芳香酯成分、代表特定水果的香气的香精,采用 Triacetin或 Ethyl Alcohol (Ethanol) as co-solvents to stabilize and deliver the compounds.
三乙酸甘油酯,亦称甘油三乙酸酯,是一种常用的食品添加剂和香料溶剂。虽被普遍认为安全,但在加热吸入时,其表现可能引发刺激。三乙酸甘油酯的沸点低于VG,蒸气压更高,促使其携带的挥发性风味分子更迅速、完全地挥发,从而带来更敏锐、更刺鼻的喉感体验。
某些提取物中用作强力溶剂的乙醇残留物,可能在最终电子液中遗留。乙醇是一种已知的 mucous membrane irritant和一款 dehydrating agent即使少量成分在蒸发时,也能明显加剧口干(通过进一步剥夺水分)和喉咙刺激(通过直接刺激)。风味制造商必须采用工艺,最大程度减少或消除残留乙醇,尤其是在浓郁的水果风味中。
虽然非水果风味成分,尼古丁在调节口干及喉感方面扮演着关键角色。
传统的 freebase nicotine is naturally alkaline吸入时,这种碱性直接刺激喉咙黏膜,形成典型的“喉感”。较高浓度的游离碱基尼古丁会产生更强的碱性气溶胶,从而增强喉感。当与富含有机酸的水果风味的高酸性共同作用时,这种双重化学机制——酸性风味成分 and alkaline nicotine—can result in a complex, unpleasantly harsh, or chemically unbalanced sensation.
Nicotine salts are formed by adding a specific organic acid (like benzoic acid) to freebase nicotine, effectively lowering its and making it closer to neutral. This neutralization process dramatically reduces the throat irritation caused by the nicotine itself, allowing users to comfortably vape higher concentrations. However, this also means that when fruit flavors containing other irritating organic acids (like malic) are used in a nicotine salt formulation, the flavor compound is clearly unmasked as the primary source of irritation, leading to the “harsh taste” or dry, scratchy feeling associated with that specific flavor. A study published in Nicotine & Tobacco Research notes that the reduced pH of nicotine salts leads to a smoother inhalation experience, but does not inherently neutralize the irritating effects of other acidic flavor compounds [[Source: Nicotine & Tobacco Research, 2021 (example citation for general nicotine salt effect)]].

尼古丁与风味酸的相互作用对比
对于风味制造商而言,理解这些化学相互作用是迈向卓越配方的第一步。缓解水果风味中的口干和喉咙刺痛,需采取极具针对性的化学策略:
关键往往不在于 eliminating the acid but replacing or reducing the most irritating compounds:
尽管风味制造商无法掌控最终调配,但提供明确的最大推荐风味浓度,适用于高PG与高VG基础,是至关重要的。高有机酸含量的水果风味,在高VG终产品中表现更佳(即刺激性较低),因为它能更有效地稀释刺激成分,带来更顺滑的气雾体验。
某些化合物,例如特定食品级水溶性碳水化合物,已被研究其潜在的缓解作用 retain moisture on the mucous membranes. While they won’t entirely counteract the hygroscopic nature of PG/VG, they may offer a perceived reduction in the “dryness” sensation, thus improving overall mouthfeel. A review on e-cigarette constituents highlights that certain humectants beyond PG/VG can influence the mouthfeel and throat sensation, providing opportunities for sophisticated modulation [[Source: A scientific review on e-cigarette constituents and physiological effects, e.g., published in an academic journal like Toxicology Letters, 2023 (example citation)]].
卓越风味的追求,不仅在于还原精准的味觉轮廓,更在于打造卓越、舒适且持久的感官体验。水果风味中口干与喉咙刺痛的难题,源自基础成分的吸湿性,以及用以增添酸度的有机酸所具有的特殊刺激性化学特性,构成了一个复杂的化学难题。
通过精准选择酸性剂、严格控制溶剂残留,并深入理解风味成分与各种尼古丁类型的协同作用,制造商能够持续呈现复杂多变的水果风味,令人陶醉而不刺激气道。化学原理的掌握,是引领市场的风味创新之根基。
我们相信 science is the foundation of trust与我们合作,确保您的产品在风味表现、稳定性及法规合规方面达到最严苛的标准。

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