CIS-3-NONEN-1-OL
CIS-3-NONEN-1-OL is a cis-unsaturated aliphatic alcohol used primarily for its green, melon-like flavoring properties in food and beverage applications, recognized by flavor industry bodies for safe use within defined conditions.
What It Is
CIS-3-NONEN-1-OL is a cis-configured unsaturated primary alcohol with the CAS number 10340-23-5. Chemically it belongs to the class of aliphatic unsaturated alcohols characterized by a nine-carbon chain that includes a cis double bond at the third carbon atom. In the context of food and flavor science, CIS-3-NONEN-1-OL functions as a flavoring agent or adjuvant, meaning it is incorporated into food and beverage formulations to contribute or enhance specific sensory characteristics. In industry parlance it may also be identified by other names and structural descriptors, but the core identity relates to its cis-3-nonen-1-ol structural motif. In sensory profiles, it is frequently associated with fresh, green, and melon-like aroma and flavor notes, which makes it useful in formulations aimed at imparting or enhancing fruity impressions in a wide range of products. CIS-3-NONEN-1-OL is of interest to flavor chemists and product developers because its molecular structure supports a balance of volatility and odor character that can harmonize with other flavor ingredients. The cis double bond orientation is one crucial structural element influencing the perceived aroma. When evaluated within flavor libraries curated by expert panels such as the Flavor and Extract Manufacturers Association (FEMA), it is assigned identifiers supportive of its use, acknowledging industry usage patterns and safety assessments conducted under defined conditions of intended use. These evaluations help guide formulators in selecting it for applications where a fresh or green note is desired. The ingredient's identity is also tied to its origins: unsaturated alcohols like CIS-3-NONEN-1-OL occur naturally in various plant-derived materials, and those natural occurrences help underpin its acceptance as a flavoring agent in many contexts. While not assigned a specific INS number for regulatory labeling, it is included in flavor ingredient libraries that inform regulatory inventories and industry practice, indicating its recognized role within the broader family of flavoring substances evaluated by international expert committees. This defines the baseline understanding of what CIS-3-NONEN-1-OL is and why it is of interest in food science and product formulation.
How It Is Made
The manufacture of CIS-3-NONEN-1-OL typically involves organic synthesis techniques tailored to produce unsaturated alcohols with high selectivity for the cis configuration. One broadly applied strategy begins with precursors such as the corresponding unsaturated acid or ester that contains the requisite carbon chain length. Through a sequence of chemical transformations—such as esterification followed by controlled reduction—manufacturers can transform these precursors into the target alcohol. Catalytic hydrogenation methods calibrated to preserve the cis double bond configuration are frequently employed, ensuring that the molecular geometry essential to its functional characteristics is maintained. In industrial practice, such syntheses are conducted under controlled temperature and pressure conditions, and catalysts such as palladium or nickel on suitable supports may be used to facilitate selective hydrogenation. Purification steps including distillation and chromatographic separation are often integrated into the production process to achieve the high purity levels required for flavoring applications. Quality control measures typically assess aspects such as cis/trans isomer ratio, overall purity, and the absence of undesirable by-products that could detract from flavor quality or safety. Specification standards for flavoring ingredients like CIS-3-NONEN-1-OL are established by expert panels and industry compendia, which outline acceptable purity criteria and analytical methods to verify identity and composition. The manufacturing process must ensure consistency with these specifications so that the finished ingredient performs reliably in end-use applications. Suppliers often provide documentation such as Certificates of Analysis (CoA) and Safety Data Sheets (SDS) to support downstream users in understanding both the composition and safe handling characteristics of the ingredient. These processes underpin the transition from chemical synthesis to functional ingredient used by formulators and product developers.
Why It Is Used In Food
The primary rationale for using CIS-3-NONEN-1-OL in food and beverage products lies in its distinctive flavor profile, which can impart green, fresh, and melon-like sensory notes that are difficult to achieve with other substances alone. Flavor formulation in foods is a complex balance of chemistry and sensory perception; ingredients are selected not just for singular odor characteristics but for how they blend with other components to create a desired overall flavor impression. CIS-3-NONEN-1-OL’s molecular structure allows it to volatilize at appropriate rates during consumption, contributing perceived freshness and complexity to product aroma and taste. Product developers often face the challenge of replicating natural flavor impressions in processed foods, and compounds like CIS-3-NONEN-1-OL help bridge the gap between raw ingredient flavors and consumer expectations. In beverages such as fruit-flavored drinks, for example, it can support the replication of fresh melon or cucumber-like notes that complement other fruit esters and aldehydes. In confectionery or dairy applications, it may be used sparingly to lift and brighten a flavor profile without dominating the overall taste experience. Beyond the sensory dimension, its use reflects broader formulation logic: ingredient compatibility, stability under processing conditions, and the ability to deliver consistent flavor impact at low usage levels are all factors that contribute to its selection. Flavoring agents like CIS-3-NONEN-1-OL are evaluated not just on sensory impact, but also on how they interact with fats, sugars, acids, and other matrix components within food systems. This comprehensive functional role explains why such compounds are valued by food scientists and why they find application across multiple categories of flavored foods and beverages.
Adi Example Calculation
To illustrate how the concept of an acceptable daily intake (ADI) functions, consider a hypothetical example: if an expert panel were to establish an ADI of 1 mg per kilogram of body weight per day for a flavoring substance, a person weighing 70 kilograms could theoretically consume up to 70 mg of that substance daily over a lifetime without appreciable health risk. This calculation is based solely on the ADI framework and does not represent a recommendation or established value for CIS-3-NONEN-1-OL specifically. In reality, typical exposure to flavoring agents like CIS-3-NONEN-1-OL from flavored foods and beverages is expected to be orders of magnitude lower than such hypothetical ADI values due to the low concentrations used to achieve sensory impact. Moreover, expert bodies may determine that formal numeric ADIs are unnecessary for compounds evaluated within broader safety assessment frameworks. Nonetheless, the illustrative calculation demonstrates how ADIs are scaled relative to body weight and helps convey why low-level exposure within defined conditions of use is not typically a concern for consumer safety.
Safety And Health Research
Safety assessments for flavoring agents such as CIS-3-NONEN-1-OL involve a careful examination of toxicological data, exposure estimates, and structural considerations. These evaluations are typically performed by expert panels and regulatory committees, which review available studies to understand potential hazards and contexts of use. Data such as acute toxicity, genotoxicity assays, and metabolic fate are considered to ascertain whether the compound poses risks at the levels at which it would be consumed in foods. Because flavoring agents are used at relatively low concentrations to achieve sensory impact, exposure estimates are correspondingly low, and this context is factored into the safety evaluation. Expert committees use established risk assessment frameworks that integrate uncertainty factors to account for differences between species and individual human variability. The goal is to establish a margin of safety that ensures consumer protection even with chronic exposure. Where specific toxicological endpoints such as genotoxic potential are of concern, additional data requirements and conservative assumptions guide the assessment. For CIS-3-NONEN-1-OL, inclusion in expert-managed flavor libraries suggests that existing evidence supports its safety within defined use conditions. It is also important to recognize that structural analogs and class effects inform assessments. Primary unsaturated alcohols with similar chain lengths often share metabolic pathways that lead to common, relatively benign metabolites, and this comparative information can influence risk characterization. Safety research remains an ongoing process, and expert bodies periodically revisit evaluations in light of new data or evolving scientific methods. This ensures that regulatory decisions remain aligned with current understanding of toxicology and exposure science.
Regulatory Status Worldwide
CIS-3-NONEN-1-OL’s regulatory footprint is shaped by evaluations conducted by expert bodies that assess flavoring agents for safety and appropriate use. The Flavor and Extract Manufacturers Association (FEMA) has included it in its Flavor Ingredient Library, which catalogues substances that have been assessed by its expert panel for their suitability as flavoring ingredients under specified conditions. Such inclusion indicates that, based on available data and use levels, it can be utilized in flavors without safety concerns when used as intended. This library serves as a resource for industry participants and supports inventory listings used by regulatory authorities. Internationally, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) maintains databases of flavoring specifications that include entries for substances identified by CAS number and structural criteria, offering a framework for how flavoring agents are considered globally. While specific statutory approvals such as a CFR section in the United States or an E-number in the European Union may not be explicitly assigned to every flavoring compound, these expert evaluations inform national food safety standards and regulatory inventories. National authorities often reference FEMA GRAS status or JECFA evaluations when determining allowable flavoring agents within their jurisdictions, supporting harmonized approaches to food safety. Regulatory practices vary by region, but the overarching principle is that flavoring agents like CIS-3-NONEN-1-OL are evaluated in terms of identity, purity, intended use, and exposure to ensure consumer protection. Its inclusion in expert-managed libraries reflects a consensus view on its suitability as a flavoring agent under defined conditions, which underpins its use in food and beverage production around the world.
Taste And Functional Properties
From a sensory perspective, CIS-3-NONEN-1-OL is characterized by a fresh, green, waxy, melon-like aroma and flavor note that can evoke impressions similar to certain naturally occurring fruit aromas. This flavor character arises from its unsaturated alcohol structure, which facilitates specific interactions with olfactory receptors, leading to distinctive sensory perceptions. Its functional behavior in formulations is influenced by volatility, solubility, and stability: as an alcohol with moderate chain length, it exhibits sufficient volatility to contribute to aroma perception without being excessively fugitive, making it useful in dry, liquid, and emulsion systems. Solubility considerations are an important aspect of its functional profile. CIS-3-NONEN-1-OL is more soluble in organic phases and flavor carriers than in aqueous environments, which affects how it is incorporated into food systems. Formulators often use appropriate solvents or encapsulation techniques to ensure that the ingredient is distributed effectively in the final product. Stability during processing—such as heat exposure during pasteurization or high-shear mixing in confectionery—must also be taken into account, and in many instances it is blended with other stabilizing flavor ingredients to maintain desired sensory impact. Overall, its taste and functional properties reflect a balance of sensory intensity and formulation practicality. When used within recommended concentration ranges, it can elevate the complexity and naturalness of a flavor profile, particularly in products seeking to mimic or enhance fruit-derived tastes. However, like all flavoring ingredients, its contribution must be calibrated alongside other components to achieve an integrated and consumer-appealing outcome.
Acceptable Daily Intake Explained
The concept of acceptable daily intake (ADI) is central to understanding how regulators and expert panels manage the safety of food additives and flavoring agents. An ADI represents an estimate of the amount of a substance that can be ingested daily over a lifetime without appreciable health risk, expressed relative to body weight. Establishing an ADI involves identifying a reference point—often derived from animal studies—such as a no-observed-adverse-effect-level (NOAEL), and dividing it by uncertainty factors to account for interspecies differences and human variability. For many flavoring agents, including CIS-3-NONEN-1-OL, formal numeric ADIs may not be established because typical use levels and exposure estimates are extremely low, and expert evaluations indicate safety within those use conditions. In such cases, safety is supported by structural, toxicological, and exposure data that collectively suggest that general dietary exposure will be well below levels of concern. When a numeric ADI is established for other compounds, it serves as a reference for regulators and industry professionals to gauge whether estimated daily intake for consumers falls within safe bounds. The absence of a numeric ADI for a specific flavoring agent does not imply a safety deficiency; rather, it reflects that existing evidence supports its safe use under the conditions for which it has been evaluated. In practical terms, ADIs help contextualize safety assessment by linking toxicological insights with real-world exposure scenarios. Consumers encounter flavoring agents like CIS-3-NONEN-1-OL at trace levels in finished products, and expert evaluations incorporate this exposure context into their recommendations. This ensures that flavoring agents contribute to sensory quality without posing unreasonable risk when used in accordance with good manufacturing practices and regulatory guidance.
Comparison With Similar Additives
When comparing CIS-3-NONEN-1-OL with other flavoring agents, it is useful to consider compounds that contribute similar sensory dimensions. For example, cis-3-hexenol is another unsaturated alcohol known for its green, grassy aroma and is used in flavor and fragrance applications to evoke fresh, plant-like impressions. While both CIS-3-NONEN-1-OL and cis-3-hexenol contribute green sensory notes, differences in carbon chain length and odor character influence how they are employed in flavor systems. CIS-3-hexenol may be used where a distinctly green, herbaceous note is desired, whereas CIS-3-NONEN-1-OL’s profile leans toward melon-like freshness. Another related additive is trans-2-hexenal, an aldehyde that imparts green, apple-like notes and is often used to support fruit impressions in beverages and confections. Although trans-2-hexenal differs chemically from primary alcohols like CIS-3-NONEN-1-OL, its functional role in contributing fresh, fruity nuances highlights how diverse classes of compounds can be combined to achieve cohesive flavor outcomes. Formulators select among these ingredients based on their specific odor characteristics, volatility, and compatibility with other flavor components. These comparisons illustrate the landscape within which flavor chemists operate: a toolkit of structurally diverse molecules that each contribute distinctive sensory cues. Understanding the similarities and differences among such compounds helps guide formulation strategies that meet desired flavor targets while aligning with safety and regulatory frameworks.
Common Food Applications Narrative
Across the food and beverage industry, CIS-3-NONEN-1-OL plays a complementary role in crafting complex sensory profiles that resonate with consumer preferences. In flavored beverages, particularly those seeking to mimic fresh fruit impressions without using high levels of natural juice, it supports aromatic complexity by contributing top notes that evoke melon or green fruit nuances. Combined with other flavoring building blocks such as esters and aldehydes, it enhances the perception of naturalness and freshness. In confectionery products such as fruit chews, gummies, and hard candies, formulators often aim to balance sweetness with aromatic notes that give the impression of ripe fruit. CIS-3-NONEN-1-OL can be included at low levels to provide subtle cues that help differentiate between similar fruit profiles. Meanwhile, savory seasonings and dressings that incorporate vegetable or herb accents may use it to add depth and variety to green or garden-fresh impressions. Its versatility extends to dairy applications where a hint of green or melon note can accent seasonal or specialty flavors in yogurts or frozen desserts. In each of these applications, CIS-3-NONEN-1-OL is not used in isolation but as part of carefully designed flavor blends. Its contribution is measured in parts per million or less, reflecting its potent sensory impact at low concentrations. This practical use across multiple food categories highlights how flavor chemists leverage a wide array of ingredients to create nuanced taste experiences that appeal to diverse consumer palates, all while operating within safety and regulatory frameworks established by expert bodies and national authorities.
Safety & Regulations
FDA
- Notes: Specific CFR approval sections for this flavoring ingredient were not found in available regulatory sources.
EFSA
- Notes: No specific EFSA ADI or E-number assignment was identified in available authoritative sources.
JECFA
- Notes: JECFA database lists the flavoring agent by CAS and structural identification, but a specific numeric ADI or year could not be confirmed.
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