Food Ingredient Glossary A–Z

An artificial, non-nutritive sweetener approximately 200 times sweeter than sucrose (table sugar). Composed of two amino acids — aspartic acid and phenylalanine — linked by a methanol molecule.

A class of synthetic or semi-synthetic sugar substitutes that provide intense sweetness (100-20,000x sweeter than sugar) with zero or near-zero calories. Includes aspartame, sucralose, saccharin, acesulfame potassium (Ace-K), and neotame.

Any flavoring substance not derived from a natural source. Manufactured entirely through chemical synthesis in laboratories to mimic natural flavors. The chemical structure may be identical to natural counterparts, but the source is synthetic.

A synthetic antioxidant chemically related to BHA, added to fats, oils, and cereals to prevent oxidation and rancidity. Also used in cosmetics, rubber, and petroleum products.

A synthetic triarylmethane dye derived from petroleum that produces a bright blue color. Used in beverages, candies, and baked goods.

The proportion of a nutrient or compound that is absorbed from the digestive tract and made available for use or storage in the body. A nutrient can be present in food but have low bioavailability, meaning most of it passes through without being absorbed.

A thickener and stabilizer extracted from red seaweed, used to improve texture and prevent separation in dairy and plant-based products.

A labeling term indicating that nutrients (typically B vitamins and iron) have been added back to a refined grain product after the milling process stripped them out. 'Enriched' flour has had its bran, germ, and fiber removed, then had a fraction of the original nutrients synthetically reintroduced.

A numerical ranking system (0-100) that measures how quickly a carbohydrate-containing food raises blood glucose levels after consumption. Pure glucose is the reference food with a GI of 100. Foods are classified as Low GI (≤55), Medium GI (56-69), or High GI (≥70).

A measure that accounts for both the quality (Glycemic Index) and quantity (grams of carbohydrate per serving) of carbohydrates in a food. Calculated as: GL = (GI × grams of carbs per serving) ÷ 100. Classified as Low (≤10), Medium (11-19), or High (≥20).

A deceptive marketing practice where food manufacturers use natural-looking packaging (earth tones, images of farms, leaves), buzzword claims ('wholesome,' 'simple,' 'real'), or misleading certifications to create the perception of health and sustainability — without the product actually being significantly healthier or more sustainable than conventional alternatives.

An industrial sweetener made by enzymatically converting glucose in corn starch to fructose. Typically found as HFCS-55 (55% fructose, used in soft drinks) or HFCS-42 (42% fructose, used in processed foods).

A cognitive bias in which a single positive health attribute of a food product (e.g., 'organic,' 'gluten-free,' 'low-fat,' 'plant-based') causes consumers to perceive the entire product as healthier than it actually is — often leading them to underestimate calories, sugar, or harmful additives.

The sodium salt of glutamic acid, an amino acid naturally found in some foods. In its industrial form, it is manufactured through bacterial fermentation of starch or sugar and used as a flavor enhancer to amplify umami taste.

A highly processed white powder made from corn, rice, potato, or wheat starch. Despite being classified as a complex carbohydrate, it is broken down so aggressively during processing that its glycemic index (GI 85-105) often exceeds that of table sugar (GI 65).

According to the FDA (21 CFR 101.22), 'natural flavor' is any flavoring derived from a plant or animal source — including fruits, vegetables, herbs, bark, roots, meat, seafood, poultry, eggs, or dairy — through heating, distillation, or fermentation. A single 'natural flavor' listing can contain dozens of individual chemical compounds, solvents, emulsifiers, and preservatives.

A labeling claim regulated by the FDA meaning that no sugar or sugar-containing ingredient (e.g., fruit juice concentrate, honey, corn syrup) was added during processing. It does NOT mean the product is sugar-free or low in sugar — it may still contain high levels of naturally occurring sugars.

A third-party certification from the Non-GMO Project confirming that a product has been produced according to rigorous best practices for GMO avoidance, including testing of high-risk ingredients. The threshold for GMO contamination is 0.9% or less.

The proportion of omega-6 polyunsaturated fatty acids (pro-inflammatory, e.g., linoleic acid) to omega-3 polyunsaturated fatty acids (anti-inflammatory, e.g., EPA and DHA) in the diet or in a specific oil/food. Both are essential fatty acids, but their balance determines inflammatory status.

A synthetic emulsifier derived from sorbitol, oleic acid, and ethylene oxide. Used to keep ingredients blended and improve texture in processed foods, pharmaceuticals, and cosmetics.

An edible vegetable oil derived from the fruit of the oil palm tree (Elaeis guineensis). It is the most widely produced vegetable oil in the world and appears in roughly 50% of all packaged products sold in supermarkets.

A petroleum-derived azo dye and the most widely consumed artificial food dye in the United States. It produces a bright red color and is used purely for cosmetic purposes — it adds no flavor, nutrition, or preservative function.

A synthetic preservative used to inhibit mold, yeast, and bacterial growth in acidic foods and beverages. It is the sodium salt of benzoic acid.

A curing agent used to preserve color, prevent bacterial growth (especially Clostridium botulinum), and add a characteristic flavor to processed meats.

A synthetic, zero-calorie sweetener created by chlorinating sucrose (replacing three hydroxyl groups with chlorine atoms). Approximately 600 times sweeter than sugar.

A category of highly refined cooking oils extracted from the seeds of plants using industrial processes — typically involving chemical solvents (hexane), high heat, bleaching, and deodorizing. Includes soybean oil, canola oil, corn oil, sunflower oil, safflower oil, cottonseed oil, and grapeseed oil.

A synthetic antioxidant derived from butane, used to extend the shelf life of oils, fats, and processed foods by preventing oxidation and rancidity.

Artificial fats created by adding hydrogen to liquid vegetable oils to make them solid at room temperature (hydrogenation). While the FDA banned artificial trans fats in 2018, trace amounts (< 0.5g per serving) can still be legally labeled as '0g trans fat.'

A certification from the United States Department of Agriculture requiring that at least 95% of a product's ingredients are produced without synthetic pesticides, synthetic fertilizers, GMOs, antibiotics, growth hormones, irradiation, or sewage sludge. Products labeled '100% Organic' must contain only organic ingredients.

A certification indicating a product complies with the Whole30 elimination diet program — free from added sugar (including artificial sweeteners), alcohol, grains, legumes (including soy and peanuts), dairy, carrageenan, MSG, and sulfites.

A synthetic lemon-yellow azo dye derived from petroleum. One of the most commonly used artificial food colorings worldwide.