Distinction Between Permitted and Prohibited Food Additives – Their Categorization and Health Impact

The term *additional substance*, as defined under Regulation (EC) No 1333/2008, refers to any chemical compound that is neither consumed independently as a food item nor serves as a characteristic ingredient of food (regardless of any potential nutritional value it may possess). The deliberate incorporation of such a substance during food manufacturing, processing, preparation, treatment, packaging, transportation, or storage results in the substance—or its derivatives—becoming either a direct or indirect constituent of the final food product. For food manufacturers to lawfully utilize additives, several core requirements must be satisfied: (1) a demonstrated technological necessity for their use (e.g., indispensability in production processes), (2) the impossibility of achieving the same outcome through alternative means, (3) no deception of consumers regarding product attributes, (4) confirmed safety for health at recommended usage levels (supported by rigorous scientific evidence), and (5) prohibition against concealing defects arising from the use of substandard raw materials. Additives serve multiple technological and sensory functions, including: (a) preventing undesirable organoleptic changes (taste, color, odor), (b) extending shelf life by inhibiting microbial growth or oxidation of key nutrients, (c) enhancing visual appeal (e.g., through colorants), (d) diversifying product ranges (e.g., "light" variants with modified compositions), and (e) optimizing production processes for improved efficiency and cost-effectiveness.

Substances incorporated into food products can be systematically categorized based on their origin and production methodology. Three primary classifications exist: **natural substances**, derived from organic raw materials (such as plant components) without chemical alteration; **nature-identical synthetic substances**, produced via laboratory synthesis yet retaining properties indistinguishable from their natural counterparts; and **fully synthetic (artificial) substances**, which do not occur in nature and are generated through advanced industrial processes. Functionally, these additives are divided into numerous subgroups, with the most critical categories including colorants, flavorings, preservatives, antioxidants, pH regulators (encompassing acids and alkalis), structural stabilizers, emulsifiers, gelling agents, flavor and aroma enhancers, and sweeteners. **Permitted food additives** undergo rigorous toxicological evaluation prior to inclusion in official registries. Their maximum allowable daily intakes (referred to as *ADI – Acceptable Daily Intake*) are determined based on studies of the **NOEL level** (*No Observed Effect Level*), defined as the concentration at which no adverse health effects are detectable. The use of these substances is authorized solely when technologically essential and posing no risk to consumers. The table below presents selected additives widely recognized as safe, alongside their fundamental characteristics.

Any supplementary substance not explicitly listed in the authorized register of food additives is strictly prohibited from use at every stage of food processing and manufacturing. Continuous scientific research and safety evaluations are conducted to identify potential hazards. Particular attention is given to a category of chemical compounds that, when combined with other ingredients, may trigger allergic reactions, metabolic disruptions, or other adverse health effects. For instance, synthetic colorants such as quinoline yellow (E104) and orange yellow (E110), when interacting with sodium glutamate (E621), exhibit prohibited neurostimulatory properties. Furthermore, there exists a distinct group of food products to which the addition of any auxiliary substances is legally forbidden. This group includes: **unprocessed bee honey**, **butter derived from unaltered cream**, **still mineral and spring waters without carbonation**, **loose-leaf teas without added flavorings**, **refined and cane sugars**, **milk in various fat compositions (semi-skimmed, whole, skimmed) subjected to thermal treatment (UHT, pasteurization)**, **natural cream and whipping cream**, and **dairy products containing live probiotic bacterial cultures**. The prohibition also extends to foodstuffs that undergo no technological processing capable of altering their original physicochemical or sensory characteristics. The table below enumerates selected banned additives alongside their E-numbers: **E 103 (Resorcinol)**, **E 105 (Fast Yellow AB)**, **E 111 (Orange GGN)**, **E 121 (Litmus, vegetable dye)**, **E 125 (Scarlet GN)**, **E 152 (Black 7984)**, **E 181 (Tannins, plant-derived polyphenols)**.

Food safety represents a cornerstone of human nutritional well-being, yet the excessive consumption of additive substances may pose significant health risks. Consequently, food manufacturers are legally bound to adhere to comprehensive European standards that delineate maximum permissible doses deemed safe for consumers. Oversight of all currently approved additives is conducted by the **Scientific Committee on Food Safety (SCF)**, which establishes an **Acceptable Daily Intake (ADI)** for each substance—a metric expressed in milligrams per kilogram of body weight, defining the quantity that may be ingested from all sources over a lifetime without inducing adverse health effects. The utilization of additives presents both advantages and disadvantages: sweeteners facilitate the production of low-calorie foods without elevating blood glucose levels or stimulating insulin secretion, a critical benefit for individuals managing diabetes. However, certain additives such as aspartame or acesulfame are contraindicated for those with phenylketonuria due to their phenylalanine content. Additionally, a subset of additives exhibits documented allergenic properties, including azo dyes (which may trigger urticaria or exacerbate atopic dermatitis symptoms), preservatives like benzoic acid (associated with respiratory distress), and flavor enhancers such as monosodium glutamate (linked to headaches and chest discomfort). Additives serve diverse functions—some enhance nutritional value, while others may provoke allergic reactions. Mitigating excessive intake is paramount, achievable through a balanced diet prioritizing unprocessed foods. Mandatory labeling regulations ensure that product compositions, including additive content, are transparently disclosed, empowering consumers to make informed dietary choices.