CORN SILK, OIL(ZEA MAYS L.)

CAS: 977089-40-9 FLAVORING AGENT OR ADJUVANT

CORN SILK, OIL (Zea mays L.) is a plant‑derived flavoring agent or adjuvant recognized in the FDA Substances Added to Food inventory for use in foods as a flavoring agent or adjuvant based on its listing in the FDA food ingredient inventory.

What It Is

CORN SILK, OIL (Zea mays L.) is a flavoring agent or adjuvant derived from the silk portions of the corn plant (Zea mays L.), the long, threadlike fibers attached to the ear of corn. It is identified in the U.S. Food and Drug Administration (FDA) Substances Added to Food (formerly EAFUS) inventory as a substance that may be added to food for its flavoring properties and in support of other flavor agents. The term “oil” in this context refers to the fixed or essential oil obtained from corn silk tissue, representing a complex mixture of long‑chain fatty acid esters, terpenoid constituents, and trace components that contribute aroma or assist the delivery of flavor in food formulations. CORN SILK, OIL is not assigned a numerical INS/E‑number in international food additive nomenclature, and its regulatory documentation primarily reflects its treated use as a flavoring agent within inventories of permitted substances rather than an explicitly codified additive category. Its identity is distinguished by its botanical source (corn silk) and its CAS registry style number, indicating its recognized entry in regulatory inventories rather than a traditional chemical registry entry for food additives. Its classification as a flavoring agent underscores its application in enhancing or complementing the sensory profile of foods where subtle corn‑related aromatic notes are desirable. Regulatory inventories such as the FDA’s Substances Added to Food list it by name, CAS number, and functional use. The descriptive classification "FLAVORING AGENT OR ADJUVANT" reflects its technical role rather than pharmacological or nutritive functions in food.

How It Is Made

The production of CORN SILK, OIL typically begins with the harvesting of corn silk material, the fibrous styles attached to ears of maize plants that are byproducts of corn cultivation. After collection, the plant material is dried to reduce moisture content and improve storage stability. The oil is then extracted from the dried corn silk using processes such as solvent extraction or steam distillation, which draw out volatile and fixed oil constituents from the plant matrix. Solvent extraction may involve the use of food‑grade ethyl alcohol or other extraction solvents, followed by solvent removal, concentration, and purification steps that yield an oil suitable for use in flavor formulations. Distillation techniques isolate volatile compounds that contribute key aromatic characteristics. After extraction, the material may be filtered, refined, or standardized to meet food grade specifications, retaining the characteristic flavor components associated with the corn silk. Strict quality control protocols ensure that the final oil product is free of contaminants and consistent in sensory profile. The manufacturing approach reflects standard industry practice for botanical flavor extracts, balancing efficient recovery of desirable components with adherence to safety and purity guidelines, even though detailed technical specifications for CORN SILK, OIL itself are not widely published in public regulatory monographs.

Why It Is Used In Food

CORN SILK, OIL is used in food primarily as a flavoring agent or adjuvant to impart or modify specific sensory attributes related to corn silk or botanical notes. Flavoring agents such as this are incorporated into foods to enhance, extend, or balance the overall flavor profile. In applications where a mild, sweet, grassy, or corn‑like nuance is desirable, CORN SILK, OIL assists formulators in achieving a target sensory perception that complements other ingredients in a formulation. Beyond flavor, adjuvant usage can aid in stabilizing or carrying volatile flavor components, improving their distribution and perception in complex foods. Its use is particularly relevant in processed foods where natural flavor complexity is needed but direct use of high‑moisture plant material is impractical. In addition, because it is plant derived, CORN SILK, OIL appeals to cleaner label considerations compared to some synthetic flavoring chemicals. The technical effect is not nutritive; rather, it supports sensory quality and palatability, helping maintain product consistency across batches while fulfilling regulatory inventories’ criteria for acceptable usage.

Adi Example Calculation

In contexts where a numeric ADI exists for a regulated food additive, an example calculation could illustrate how an adult’s estimated intake compares to the ADI. For instance, if an additive had an ADI of X mg per kg body weight, a 70 kg adult’s allowable intake would be X times 70. For CORN SILK, OIL specifically, a numeric ADI has not been published in primary regulatory additive specification sources, so such a calculation is illustrative for general understanding rather than reflective of this ingredient’s documented regulatory status.

Safety And Health Research

Safety and health research into substances like CORN SILK, OIL focuses on toxicological endpoints relevant to flavoring agents, including acute toxicity, genotoxicity, and potential allergenicity, as part of risk assessment frameworks. Regulatory inventories typically require evidence that a flavoring substance does not pose undue risk at intended levels of use. While specific toxicological data for CORN SILK, OIL itself are limited in publicly available primary regulatory sources, general evaluations of corn‑derived materials suggest low acute toxicity and a long history of dietary exposure to corn plant constituents without widespread adverse reports. Botanical extracts and oils often undergo assessments for contaminants, solvent residues, and compositional consistency to ensure they meet food‑grade specifications. Independent scientific literature on corn silk extracts indicates areas of active research into biological activities of corn silk components, but these studies generally explore pharmacological or medicinal contexts rather than food additive safety at typical usage levels. Safety evaluation integrates understanding of constituent chemistry, processing methods, and exposure estimates to support the regulatory inclusion of such flavoring agents.

Regulatory Status Worldwide

In the United States, CORN SILK, OIL appears in the FDA’s Substances Added to Food inventory (formerly EAFUS) with the designation FLAVORING AGENT OR ADJUVANT and the CAS registry style number 977089‑40‑9, indicating its recognized use in food formulations as a flavoring ingredient. This inventory listing signals that the substance is acceptable for use in food under conditions determined by food safety authorities, though it is not accompanied by a specific numeric regulation codified in the Code of Federal Regulations. Internationally, flavoring agents such as CORN SILK, OIL may be subject to flavoring specifications evaluated by expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) in their databases of flavoring specifications, though a specific entry or INS number for this particular oil was not found in the publicly searchable JECFA databases at the time of review. The regulatory landscape for flavoring agents also varies by jurisdiction, with many countries maintaining catalogs of permitted flavoring substances that operate analogously to the U.S. inventory approach. For jurisdictions with established food additive lists, CORN SILK, OIL’s inclusion hinges upon its identification, safety profile, and functional utility within authorized flavoring categories.

Taste And Functional Properties

CORN SILK, OIL’s sensory properties are defined by its odor and flavor contributions in a food matrix. As an oil derived from botanical material, it carries a distinctive aromatic profile that may be described as subtly sweet, grassy, or reminiscent of fresh corn silk, contributing nuanced flavor characteristics when used at appropriate levels. Its solubility profile tends toward compatibility with lipid‑rich and aqueous systems containing emulsified fats, allowing it to integrate into complex food matrices where both polar and non‑polar flavor components are present. The oil’s volatile constituents are sensitive to heat and pH variations; therefore, manufacturing and formulation strategies consider processing conditions to preserve sensory integrity. At higher processing temperatures or in strongly acidic environments, some volatile compounds may diminish or transform, altering the sensory output; formulation scientists account for this when selecting application settings. Functional behavior in food extends beyond taste to aroma delivery, where the oil’s volatile fraction contributes to aroma perception during consumption. It behaves as many botanical flavoring oils do, providing targeted sensory cues rather than broad taste enhancement, and is typically used in conjunction with other flavoring agents.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a risk assessment metric used by regulatory bodies to express the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on toxicological studies and conservative safety factors. For many traditional food additives and flavoring agents evaluated by expert committees, numeric ADI values are established when sufficient toxicological data allow quantification. In the case of CORN SILK, OIL, specific numeric ADI values were not identified in primary regulatory databases at the time of documentation, reflecting a lack of published numeric intake recommendations for this specific botanical flavor oil. When ADIs are defined, they guide regulators and industry in setting use levels and labeling considerations to ensure consumer safety. Absent a numeric ADI, substances like CORN SILK, OIL are used at levels consistent with good manufacturing practice and within the scope of regulatory inventories that consider overall exposure from combined food sources.

Comparison With Similar Additives

Flavoring agents similar to CORN SILK, OIL include other botanical‑derived oils and extracts used to impart characteristic sensory cues, such as vanilla extract, citrus peel oil, and rosemary extract, which each contain complex mixtures of volatile constituents. Like CORN SILK, OIL, these botanical flavorings are incorporated to provide recognizable aromatic notes that support product flavor profiles. Differences arise in sensory character; for example, vanilla extract delivers sweet, creamy, and warm notes, citrus oils provide bright and zesty profiles, while CORN SILK, OIL contributes subtle grassy or corn‑like nuances. Functional considerations for all such flavoring agents include volatility, stability under processing conditions, and interactions with other formulation components, influencing how they are selected and combined in product development.

Common Food Applications Narrative

CORN SILK, OIL finds its place in a range of food and beverage products where subtle natural flavor enhancement is sought. In savory snacks, soups, and sauces, it can add a botanical corn‑like note that complements other seasonings, enriching the overall taste profile without overpowering primary ingredients. Its aromatic nuances are also useful in bakery goods or cereals that benefit from an underlying sweet vegetal note, contributing to consumer perceptions of flavor complexity. Beverage applications, including flavored waters and soft drinks, may include CORN SILK, OIL to introduce an authentic corn silk essence that aligns with product themes emphasizing natural botanical ingredients. In dairy and dairy alternative products, it can support the flavor formulation by reinforcing sweet, fresh, or green notes adjacent to creamy bases. These uses reflect its sensory purpose: to subtly augment and balance flavor rather than serve as a dominant taste component. Its selection in formulations aligns with consumer interest in plant‑based, naturally derived ingredients that achieve desired sensory outcomes while meeting regulatory food additive inventories’ criteria for permissible flavor usage.

Safety & Regulations

FDA

  • Notes: Listed in FDA Substances Added to Food inventory but no specific CFR regulation section was found in primary sources.

EFSA

  • Notes: No specific EFSA numeric ADI or E number identified in primary regulatory flavoring databases.

JECFA

  • Notes: No specific JECFA numeric ADI or INS number found in the searchable JECFA flavoring specifications database.

Sources

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