What Are These Codes, Anyway?
Those codes are part of the International Numbering System (INS) for food additives, a global standard created to bring uniformity to food labels. In India, the Food Safety and Standards Authority of India (FSSAI) mandates their use. Instead of printing
a long chemical name like 'Disodium 5'-ribonucleotides', a manufacturer can simply write 'INS 635'. This system is similar to the 'E-number' system used in Europe; in many cases, the numbers are identical (e.g., E102 is the same as INS 102). The key thing to remember is that an INS number isn't a secret code for something dangerous. It's just a standardised name for an approved substance added to food for a specific technological reason. In fact, many are derived from natural sources you'd recognise.
Who Decides if They Are Safe?
Before an additive can be used in your food, it must be rigorously evaluated for safety by regulatory bodies like the joint FAO/WHO Expert Committee on Food Additives (JECFA) and, in India, by the FSSAI. FSSAI maintains a list of approved additives and specifies which foods they can be used in and at what maximum levels. These regulations are based on scientific evidence, including an 'Acceptable Daily Intake' (ADI), which is the amount of a substance considered safe to consume every day over a lifetime. So, when you see an INS number, it signifies that the ingredient has been assessed and approved for use within these safety limits. The system isn't static; these additives are periodically re-evaluated as new scientific evidence emerges.
Understanding the Additive Families
Not all additives do the same job. They are grouped into 'families' based on their function, and the INS number series often corresponds to these roles. The main categories you'll encounter are: Colours (INS 100-199) are used to restore colour lost during processing or to make a product look more appealing. Preservatives (INS 200-299) slow down the growth of microbes like bacteria and mould, extending shelf life and keeping food safe. Antioxidants (INS 300-399) prevent fats and oils from going rancid and protect against oxidation. Vitamin C (Ascorbic Acid or INS 300) is a common one. Emulsifiers, Stabilisers, and Thickeners (INS 400-499) help mix ingredients that don't naturally combine (like oil and water) and provide texture. Acidity Regulators and Anti-caking Agents (INS 500-599) control the pH level of food and keep powders free-flowing. Flavour Enhancers (INS 600-699) intensify the existing taste of a food.
Common Codes That Are Not a Concern
Many of the most common INS numbers represent substances that are either natural, harmless, or even beneficial. For example, INS 330 is simply citric acid, the sour compound found in lemons. INS 322 refers to lecithins, a natural emulsifier often derived from soy or eggs. INS 100 is curcumin, the bright yellow compound from turmeric, and INS 300 is ascorbic acid, also known as Vitamin C. Seeing a long list of additives can be a sign that a food is highly processed, but the presence of these specific codes on their own is not a red flag.
A Few Additives to Be Mindful Of
While the system is designed for safety, some approved additives are worth a second look, especially for people with sensitivities or for children. Certain artificial colours, such as Tartrazine (INS 102) and Allura Red (INS 129), have been linked to hyperactivity in some children. Preservatives like Sodium Benzoate (INS 211), commonly used in acidic beverages, can cause issues for sensitive individuals. Similarly, Sodium Nitrite (INS 250), used in cured meats, can form potentially harmful compounds when cooked at high heat. Another to note is Monosodium Glutamate or MSG (INS 621), a flavour enhancer that can trigger headaches or other reactions in some people. The goal isn't to live in fear of these codes, but to be aware that individual reactions can vary.
Your Practical Guide to Label Reading
Instead of trying to memorise hundreds of codes, focus on a more practical approach. First, read the whole ingredient list. Ingredients are listed in descending order by weight, so the first three ingredients tell you what the product is mostly made of. If refined flour, sugar, or palm oil are at the top, that's more significant than a harmless additive at the bottom. Second, pay attention to the overall length of the ingredient list. A very long list often indicates an ultra-processed product. Finally, if you see an unfamiliar INS number, especially in a food you eat regularly, a quick search on your phone can tell you what it is and if there are any associated concerns. It's about building awareness, not achieving perfection.
