CLOVER (TRIFOLIUM SPP.)

CAS: 977002-83-7 FLAVORING AGENT OR ADJUVANT

Clover (Trifolium spp.) is a plant-derived substance listed as a spice and natural flavoring agent within the US FDA GRAS provisions under 21 CFR 182.10. It is used to impart characteristic botanical flavor profiles in foods and beverages and is recognized as a natural seasoning rather than a synthetic chemical additive. Its safety and use are managed under general GRAS provisions for spices and other natural seasonings.

What It Is

CLOVER (Trifolium spp.) is a botanical food ingredient derived from various species within the Trifolium genus, commonly referred to collectively as clovers. Clovers are flowering plants in the legume family and include well-known species such as white clover (T. repens) and red clover (T. pratense). In the context of food formulation, CLOVER (Trifolium spp.) is identified by the CAS number 977002-83-7 and is categorized for use as a flavoring agent or adjuvant. The term "flavoring agent" refers to substances added to foods primarily for their taste and aroma characteristics rather than for nutritional value or preservation. As a natural seasoning, clover preparations may be sourced from dried plant tops, flowers, or other plant parts that contribute unique aromatic profiles to culinary applications. Within regulatory frameworks, CLOVER (Trifolium spp.) is listed under provisions for spices and other natural seasonings and flavorings, reflecting its long history of culinary use as a harmless botanical enhancer. In regulatory inventories such as the U.S. FDA’s Substances Added to Food, clover is recognized alongside a range of plant-derived spices and seasonings that are generally regarded as safe for their intended uses. The designation of clover as a flavoring agent underscores its role in enhancing sensory attributes of foods without intended nutritional impact beyond taste modulation, and without the complex synthetic composition associated with many industrial flavor chemicals.

How It Is Made

The production of CLOVER (Trifolium spp.) as a food flavoring material begins with harvesting plant material from Trifolium species cultivated under agricultural conditions. Harvested plant parts — typically the flowering tops or herbaceous foliage — are cleaned to remove soil and extraneous plant debris. These botanical materials are then subjected to drying processes; low-temperature air drying or controlled dehydration techniques are applied to preserve volatile aromatic compounds that contribute to flavor. In some cases, dried clover may be milled or ground into a consistent particle size for ease of use, or extracted with food-grade solvents to concentrate flavor components. For flavor extracts, solvent extraction or steam distillation can be employed to isolate volatile aromatic constituents, yielding plant-derived flavor extracts suitable for incorporation into food matrices. Good manufacturing practices require that such processes ensure food-grade purity, absence of contaminants, and consistent sensory properties across lots. Specifications for plant-derived flavorings such as CLOVER (Trifolium spp.) place an emphasis on botanical identity, moisture content, and absence of harmful levels of natural plant toxins or unintended residues. While detailed chemical compositions of clover flavorings can vary with species, growing conditions, and processing methods, manufacturers focus on preserving key flavor compounds that contribute to the typical aromatic profile associated with clover, often described as green, herbal, and slightly sweet or floral in character. Because these materials are plant-derived and broadly similar to culinary herbs, their processing does not typically involve extensive chemical alteration but emphasizes preservation of natural flavor constituents.

Why It Is Used In Food

CLOVER (Trifolium spp.) is used in food formulations primarily for its contribution to aroma and taste, serving as a botanical flavoring agent. In culinary and beverage applications, natural plant-derived flavorings are favored for their perceived authenticity and the nuance they can add to complex flavor profiles. Clover, with its botanical, green, and mildly floral notes, can complement products where a subtle herbal or meadow-like quality is desirable. Food technologists incorporate botanical flavorings like clover to enhance sensory appeal, balance other flavor components, or evoke consumer associations with natural ingredients. The use of clover as a flavoring agent aligns with trends toward plant-based and natural flavor profiles, especially in products labeled to consumers as containing naturally derived seasonings. Because flavoring agents do not significantly alter the macronutrient composition of foods but influence consumer perception of taste, they are critical in fine-tuning formulations in categories such as savory snacks, beverages, sauces, and specialty foods. Clover, like other spice and herb derivatives, can also be used to mask undesirable notes in processed foods, improve overall flavor harmony, or reinforce a signature sensory theme. Adjuvant use of clover may involve blending it with other botanical flavorings to create custom flavor profiles, supporting the creation of unique and differentiated food products. In many regions, consumer preference trends toward natural and recognizable ingredients further motivate food manufacturers to explore traditional plant materials like clover for flavoring purposes. Its inclusion in regulatory lists for spices and natural seasonings reflects its recognition as a traditional botanical flavor source rather than a synthetic additive.

Adi Example Calculation

Because CLOVER (Trifolium spp.) is categorized as a botanical flavoring agent with historical use and is listed under provisions for spices and other natural seasonings rather than being assigned a specific numerical acceptable daily intake (ADI) by regulatory bodies, there is no formal ADI value to reference in an illustrative calculation. In regulatory science, ADIs are numerical benchmarks established for specific chemical additives to represent exposure levels over a lifetime that are not expected to pose health concerns. For botanical seasonings like clover, the safety assessment framework does not produce a numeric ADI because these materials are used at low levels for flavor and have a long history of dietary exposure without identified hazards at customary use levels. An example calculation in the context of a numeric ADI would normally involve multiplying a person’s body weight by the ADI value to estimate a daily amount considered safe; however, because no numeric ADI exists for clover flavorings, such a calculation cannot be performed here. This absence of a calculable ADI should not be interpreted as a safety concern but rather reflects regulatory treatment of plant-derived flavoring agents. Instead, the emphasis in safety guidance for such ingredients is on their appropriate use according to good manufacturing practices that ensure minimal necessary quantities to achieve the desired sensory effect. For consumers and food formulators, this means understanding that exposure to clover flavoring in foods occurs at low levels, consistent with traditional culinary use, and that regulatory frameworks consider this pattern of use acceptable. In cases where numeric ADIs are applicable for other additives, calculations provide illustrative context for lifetime exposure, but for clover, narrative safety descriptors replace numeric ADI examples.

Safety And Health Research

Safety evaluations of CLOVER (Trifolium spp.) as a food flavoring agent focus on its historical use as a botanical food component and the absence of evidence indicating harm when used as intended. Regulatory listings such as the FDA’s inclusion of clover under 21 CFR 182.10 for spices and natural seasonings implicitly rely on expert assessments that traditional culinary uses do not present safety concerns under normal conditions of use in foods. This approach aligns with the concept of "generally recognized as safe" for substances with a long history of edible use and without specific toxicological signals in available literature. Scientific research on clover species has explored phytochemical constituents such as flavonoids and isoflavones in the context of plant biology, but these studies often address broad biological activity rather than safety as a food flavoring. For example, clover plants contain various phytochemicals that have been investigated in in vitro and in vivo studies for biological effects, but regulatory assessments of flavoring safety do not hinge on these properties, and known research does not specifically describe hazard endpoints relevant to food additive safety when used at low flavoring concentrations. Because botanical materials are complex mixtures of many compounds, safety assessments consider potential risks from known phytotoxins or allergenic constituents, but there is no compelling evidence in authoritative regulatory sources indicating that clover flavorings pose unique hazards in conventional food use. Furthermore, regulatory frameworks emphasize good manufacturing practices, which include ensuring the botanical source material is free from contaminants and processed under conditions that preserve food-grade quality. In the absence of specific risk assessments by bodies such as the European Food Safety Authority or the Joint FAO/WHO Expert Committee on Food Additives (JECFA) focused on clover as an individual flavoring, safety considerations draw upon general principles for botanical flavorings. These principles entail reviewing available toxicological data, exposure context, and history of use, with the consensus from regulatory listings indicating that clover, when used as a flavoring, is acceptable within established safety norms.

Regulatory Status Worldwide

CLOVER (Trifolium spp.) is acknowledged within regulatory frameworks for its use as a botanical flavoring agent and natural seasoning. In the United States, it appears in the FDA’s Substances Added to Food inventory under provisions for spices and other natural seasonings and flavorings, specifically referenced to 21 CFR 182.10, which enumerates plant-derived spices and seasonings that are generally recognized as safe for their intended use in foods. This listing reflects a regulatory status akin to "generally recognized as safe" for its use as a seasoning or flavoring ingredient, with the implication that when used in accordance with good manufacturing practices, it does not raise safety concerns under typical conditions of use in food. Unlike direct food additives subject to specific quantitative limits, spices and natural seasonings such as clover fall under broader GRAS provisions with no fixed usage thresholds in the CFR, but their use must conform to principles of good manufacturing practice. In other jurisdictions such as the European Union, botanical flavorings and food ingredients with flavoring properties are subject to Regulation (EC) No 1334/2008, which establishes safety criteria and authorisation procedures for flavourings and source materials. Under these frameworks, plant-derived flavorings must meet safety and labeling criteria, and their presence in foods must not mislead consumers regarding the nature of the product. There is no specific E-number assigned to clover as a flavoring in EU legislation, and its use would typically be managed under general flavourings and food ingredients with flavoring properties that meet regulatory safety assessments. Globally, food regulators recognize botanically derived flavoring agents like CLOVER (Trifolium spp.) on the basis of historical culinary use and safety data consistent with traditional consumption, but formal evaluations by regulatory bodies other than the FDA are less common for individual plant species without well-defined chemical flavour constituents. As such, its regulatory status outside of specific listings may depend on local food law interpretations of natural seasonings and flavorings, with emphasis on safety and transparent labeling to inform consumers.

Taste And Functional Properties

CLOVER (Trifolium spp.) contributes to the sensory attributes of foods through its characteristic taste and aroma notes. Organoleptically, extracts and dried clover material are associated with green, herbal, and mildly floral tones that are reminiscent of fresh pasture or meadow vegetation. These sensory qualities can vary depending on the species of clover used, the plant part harvested, and the method of processing. For example, red clover and white clover may have subtle differences in aromatic profiles, with some preparations presenting slightly sweeter or more robust herbal notes. In terms of functional properties, clover as a botanical flavoring is primarily evaluated for its volatility and stability within food systems. Flavor compounds in clover must withstand processing conditions such as heat, mixing, and storage without undue loss of desirable aromatic components. While clover flavorings do not contribute significant emulsifying or texturizing effects, they interact with other flavor compounds in complex matrices to build layered sensory experiences. Solubility characteristics of clover-derived flavor components depend on their chemical nature; many volatile fractions are soluble in fats or alcohols, making them suitable for inclusion in oil-based or beverage applications. Stability of clover flavor attributes can be influenced by pH, temperature, and exposure to oxygen, and formulation scientists consider these factors when incorporating clover into products. In some applications, clover flavor may be paired with other botanical extracts to enhance its subtle aroma or to balance it against dominating taste attributes. From a sensory perspective, clover’s herbal note can help accentuate natural tasting profiles in products positioned toward clean label or plant-centric consumers. Because flavor perception is subjective and complex, the effective use of clover in formulations often involves sensory testing to calibrate the intensity and harmony of its contribution relative to other ingredients.

Acceptable Daily Intake Explained

The concept of acceptable daily intake (ADI) is a regulatory tool used to quantify a daily exposure level to a food additive that is considered safe over a lifetime, typically expressed in milligrams of substance per kilogram of body weight per day. ADIs are established by expert bodies based on toxicological data and safety factors to cover uncertainties. For CLOVER (Trifolium spp.), there is no specific numeric ADI established by major regulators because it is recognized as a botanical flavoring and falls under provisions for spices and natural seasonings that are generally regarded as safe when used according to good manufacturing practice. As such, regulatory frameworks do not specify a numeric ADI for clover, and the concept of a quantified acceptable daily intake is not directly applied. Instead, safety is inferred from historical culinary use and the understanding that exposure levels in foods are low and not associated with toxicological concerns. In practice, this means that while there isn’t a defined "safe threshold" expressed as an ADI for clover flavorings, its use is regarded as safe within the context of typical dietary exposure levels for flavoring agents. The absence of a formal ADI should not be interpreted as a lack of safety assessment but rather reflects how regulatory approaches treat botanically derived seasoning agents with longstanding use in human diets. Consumers are exposed to clover through the foods that contain it in small amounts for flavor, and these exposures are not monitored against an ADI because such thresholds are generally established for specific chemical additives with identified dose-response relationships rather than for complex botanical mixtures used in trace amounts. Thus, in regulatory and safety communications, emphasis is placed on the principles of good manufacturing practice and historical safety rather than on numeric intake limits. For lay readers, it is important to understand that regulatory acceptance of a botanical flavoring signals that current scientific knowledge does not identify health risks at levels used in food, but the specific numeric safety benchmarks common for individual chemical additives are not applicable in this context.

Comparison With Similar Additives

CLOVER (Trifolium spp.) shares its categorization as a botanical flavoring agent with a variety of other plant-derived seasonings and spice extracts used in food formulations. For example, basil (Ocimum basilicum), oregano (Origanum vulgare), and rosemary (Rosmarinus officinalis) are commonly used herbs that contribute characteristic aromatic profiles to foods and are regulated similarly under provisions for natural seasonings. Unlike synthetic flavor chemicals such as ethyl vanillin or methyl anthranilate, which have precisely defined chemical structures and often numeric sensory thresholds, botanical flavorings like clover present complex mixtures of volatile compounds that collectively produce sensory impressions. Compared to paprika oleoresin, a concentrated extract of Capsicum spp. that delivers pungent, sweet, and savory notes, clover’s sensory contribution is generally milder and more herbaceous. Both paprika oleoresin and clover extracts must be used in accordance with good manufacturing practices to achieve desired effects without overpowering other flavors. In contrast to cinnamon bark oil, rich in cinnamaldehyde and associated with strong spicy sweet notes, clover has a subtler botanical profile that may be used where a light herbal nuance is desired. All such botanical flavorings share a regulatory status rooted in their historical culinary use and the absence of toxicological signals at customary use levels, leading to inclusion in lists of spices and natural seasonings recognized as safe. The differences among these additives lie primarily in their sensory characteristics, solubility behaviors in various food systems, and intensity of flavor contribution, with clover occupying a niche for its gentle, floral-herbal signature compared to the more robust profiles of stronger spices or isolated flavor chemicals. In formulation practice, technical considerations include matching flavor intensity with desired product attributes and ensuring stability under processing conditions, with botanical agents offering complex sensory layers that contribute to consumer appeal.

Common Food Applications Narrative

CLOVER (Trifolium spp.) is utilized across a variety of food and beverage categories where natural botanical flavoring agents are desirable. In savory applications, clover may be included in spice and herb blends for snacks, seasonings for soups and sauces, and in dressings where a green, herbal note complements ingredients like garlic, onion, and other spices. Beverage formulators may explore clover flavor components in botanical teas, infusions, or specialty soft drinks that emphasize natural plant extracts for subtle aromatic complexity. In baked goods, clover-derived flavorings can be paired with complementary botanical profiles to accentuate whole grain or multigrain notes, especially in artisan or craft products where unique sensory signatures are prized. Processed foods such as ready-to-eat meals and sauces may incorporate clover flavor to support clean label positioning, leveraging consumer interest in recognizable plant origins. Culinary seasonings and rubs often contain blends of dried herbs and botanicals, and clover can be an ingredient in such blends, particularly in products that align with garden herb themes. Chefs and product developers working with plant-based proteins may use clover to introduce subtle herbal dimensions to meat alternatives, enhancing overall palatability. In the confectionery world, floral botanical notes like those from clover extracts may be explored in specialty candies or chocolate inclusions that feature herbaceous accents. Although its sensory contribution is typically understated relative to more dominant spices, clover’s role as a supportive flavoring ingredient fits within broad consumer demand for plant-derived, natural flavor profiles across many food categories. Because clover does not contribute significant nutritional value, its appeal lies in sensory enhancement and the ability to evoke clean, botanical imagery in marketing and labeling, providing brand differentiation in a crowded marketplace.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 182.10

EFSA

  • Notes: No specific EFSA approval or numeric ADI identified

JECFA

  • Notes: No specific JECFA evaluation or numeric ADI identified

Sources

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