What is (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane?
(+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane is a synthetic organic compound with the CAS Number 54644-28-9. Chemically, it is a trithiolane, a type of sulfur-containing heterocyclic compound. This specific structure, incorporating three sulfur atoms within a five-membered ring and two ethyl groups, contributes to its unique organoleptic properties. The "cis-" and "trans-" prefixes indicate that the compound exists as stereoisomers, meaning the ethyl groups can be arranged in different spatial configurations around the ring, both contributing to the overall flavor profile. It is typically manufactured for use as a food additive due to its characteristic aroma and taste, which are often described as savory, meaty, or sulfurous.
Like many flavoring agents, it is used in very small quantities, often measured in parts per million or even parts per billion, to achieve the desired effect without contributing significantly to the nutritional content of the food. Its inclusion in food products is based on the ability to enhance or modify existing flavors, or to introduce new ones, thereby improving the palatability and sensory appeal of the final product.
Common Uses
As a flavoring agent or adjuvant, (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane finds application in a variety of food categories. Its sulfur-containing structure lends itself to contributing to savory and cooked notes, making it particularly useful in products designed to mimic or enhance flavors found in roasted meats, broths, and other cooked dishes. It can be utilized to impart depth and richness to flavor profiles that might otherwise be bland or lacking in complexity.
Specific applications may include its use in:
* **Processed meat products:** To enhance meaty or roasted notes.
* **Savory snacks:** Such as chips, crackers, and flavored nuts, to provide umami or complex savory undertones.
* **Soups, sauces, and gravies:** To build a robust flavor base.
* **Seasoning blends:** As a component to create unique and appealing spice mixes.
* **Flavor concentrates:** Used by food manufacturers to formulate specific flavor profiles for a wide range of products.
Due to its potency, it is always used at very low concentrations, carefully controlled to ensure the desired flavor impact is achieved without overpowering other ingredients or creating an off-note.
Safety Assessment
The safety of (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane as a food flavoring has been evaluated by scientific expert panels. Notably, it is recognized as Generally Recognized As Safe (GRAS) by the Flavor and Extract Manufacturers Association (FEMA) under FEMA GRAS No. 4600. FEMA is an independent organization that conducts rigorous scientific evaluations of flavoring substances, and its GRAS determinations are widely respected and often accepted by regulatory bodies globally, including the U.S. Food and Drug Administration (FDA).
The FEMA GRAS assessment typically involves a thorough review of available toxicological data, studies on metabolism, chemical structure-activity relationships, and estimated dietary exposure levels based on its intended use. Substances are only deemed GRAS if, based on scientific procedures, expert consensus concludes that they are safe for their intended use at anticipated consumption levels.
Regarding specific FDA records, there have been 0 reported adverse events and 0 recalls associated with (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane, according to the provided data. This absence of reported issues, despite its use in the food supply, supports its safety profile when used appropriately.
It is important to clarify that the information indicating "FDA GRAS: No" means that this specific additive has not gone through the formal *FDA's GRAS affirmation process*, which is a voluntary process for manufacturers to petition the FDA to formally affirm a substance's GRAS status. However, a substance can still be considered GRAS through independent expert determinations (like FEMA's) without formal FDA affirmation. The FDA generally does not challenge FEMA's GRAS conclusions unless specific safety concerns arise.
Regulatory Status
**United States:**
In the United States, (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane is permitted for use as a food flavoring. While it has not undergone formal FDA GRAS affirmation (as indicated by "FDA GRAS: No"), its status as FEMA GRAS (FEMA No. 4600) means it is considered safe by an independent panel of experts for its intended use. The FDA acknowledges and generally accepts FEMA's GRAS determinations, allowing manufacturers to use FEMA GRAS substances without individual pre-market approval, provided they meet specifications and are used according to GRAS conditions.
**European Union:**
In the European Union, this compound is also approved for use as a flavoring. It is listed in the EU Flavoring Regulation (EC) No 1334/2008, specifically in Annex I, Part A, with the FLAVIS (FL) number 15.011. Its inclusion in this list signifies that it has undergone scientific evaluation by the European Food Safety Authority (EFSA) or its predecessors and is considered safe for use as a flavoring substance within the maximum use levels specified by the regulation. EFSA's evaluations ensure that flavorings do not pose a risk to consumer health based on available scientific data and anticipated exposure.
Regulatory bodies worldwide generally evaluate flavoring agents based on their chemical structure, toxicology data, and exposure assessments to ensure they are safe when consumed as part of a typical diet.
Key Studies
The safety assessments for flavoring agents like (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane are typically based on a comprehensive review of scientific literature and data. For FEMA GRAS determinations, such reviews often encompass:
* **Toxicological Studies:** These may include acute toxicity tests, short-term and subchronic studies, genotoxicity assays (to assess potential to damage DNA), and sometimes reproductive or developmental toxicity studies, depending on the chemical class and exposure levels. For many flavoring substances, studies on structurally related compounds are often used to infer safety.
* **Metabolic Fate:** Understanding how the body processes and eliminates the compound is crucial. If a compound is rapidly metabolized into harmless substances, it reduces the likelihood of accumulation or adverse effects.
* **Exposure Assessments:** These estimate the amount of the flavoring agent that consumers are likely to ingest daily, based on its typical use levels in various food products and consumption patterns. The estimated intake is then compared to safe intake levels derived from toxicological studies.
The specific details of the studies supporting FEMA GRAS 4600 for (+/-)-cis- And Trans-3,5-diethyl-1,2,4-trithiolane are part of FEMA's publicly available GRAS publications. Similarly, EFSA's evaluations for flavorings listed in the EU Flavoring Regulation rely on extensive scientific dossiers, which are often grouped by chemical class to streamline the assessment process. These rigorous scientific reviews collectively form the basis for its widespread acceptance as a safe flavoring agent.