Summary of Functional Foods: Definition, Classification, and Benefits
Functional Foods: Definition, Classification, and Benefits
Introduction
Functional foods are everyday foods that have been modified or formulated to deliver health benefits beyond basic nutrition. These products aim to prevent disease, support specific body functions, or improve overall well-being when consumed as part of a normal diet.
Definition: Functional food is any food, similar in appearance to conventional foods, consumed as part of a usual diet and shown to have physiological benefits beyond supplying basic nutrients.
Why functional foods matter
- Rising chronic diseases and aging populations have increased interest in foods that reduce health risks.
- Changes in lifestyle and increased scientific evidence linking diet to health drive development and market demand.
Types and classification of functional foods
Functional foods can be grouped by how they are created or modified:
1. Fortified foods
- Foods enriched with additional nutrients or compounds to provide a health effect.
- Examples: calcium-fortified bread, omega-3 fortified spreads, phytosterol-fortified margarine.
2. Foods modified to remove harmful components
- Foods altered to eliminate anti-nutritional factors or allergens produced during processing.
- Example: products with reduced allergenicity through processing.
3. Naturally improved raw materials
- Animal feeding or postharvest treatments increase healthful components in raw foods.
- Examples: eggs high in omega-3, canola oil bred for higher carotenoids, grapes with higher antioxidants after UV treatment.
4. Novel or genetically improved foods
- New varieties or genetic modifications to increase beneficial nutrients.
- Examples: rice with higher iron or B-vitamin content, wheat bred for enhanced lutein.
Definition: Fortified food — a food product with added nutrients or ingredients to confer a specific health benefit beyond its original composition.
Probiotics and prebiotics
Two major functional food categories focus on gut health.
Probiotics
- Live microorganisms which, when consumed in adequate amounts, confer a health benefit on the host.
- Common genera: Lactobacillus, Bifidobacterium (often abbreviated LAB for lactic acid bacteria).
- Examples: probiotic yogurts and drinks such as Actimel, Activia, Yakult.
Prebiotics
- Non-digestible ingredients that selectively stimulate growth or activity of beneficial gut bacteria.
- Typical examples: certain starches, dietary fibers, oligosaccharides, sugar alcohols.
- Example foods: prebiotic breads, fiber-enriched snacks.
Definition: Probiotic — live microorganisms which, when administered in adequate amounts, provide a health benefit to the host.
Definition: Prebiotic — a non-digestible food ingredient that beneficially affects the host by selectively stimulating growth and/or activity of beneficial bacteria in the colon.
Food categories active in the functional food market
Leading sectors where functional foods are launched include:
- Dairy (yogurts, fortified milks)
- Bakery (fortified breads, cereal bars)
- Confectionery (enriched chocolates or bars)
- Soft drinks (fortified beverages)
- Baby foods (nutrient-targeted formulas)
Examples of commodity-based functional foods and evidence
- Cereals and grains: Oats and barley supply beta-glucans, which help lower blood cholesterol; resistant starch acts as a fermentable fiber benefitting colonic health.
- Flaxseed: Rich in alpha-linolenic acid (ALA); studies link flaxseed to reduced LDL-cholesterol and potential benefits in inflammation and prostate cancer risk. A typical recommended amount is about 5 g of flax oil or 8 g of milled flax per
Zaregistruj se pro celé shrnutíAlready have an account? Sign in
Functional Foods Overview
Klíčová slova: Functional Foods, Bioactive Ingredients, Sustainable Food Systems, Nutraceuticals ingredients, Nutraceuticals applications and products, Nutraceuticals market and trends
Klíčové pojmy: Functional foods deliver health benefits beyond basic nutrition, Fortified foods add specific nutrients to confer targeted effects, Probiotics are live microbes that must be consumed in adequate amounts to benefit the host, Prebiotics are non-digestible ingredients that selectively stimulate beneficial gut bacteria, Classification includes fortified, detoxified, naturally improved, and novel/genetically improved foods, Dairy, bakery, beverages, and baby foods are leading functional food markets, Scientific evidence (trials, mechanisms) is needed to substantiate health claims, Product formulation and stability determine effectiveness of added functional ingredients, Japan’s FOSHU is a formal regulatory model for functional foods, Examples: beta-glucan from oats lowers cholesterol; flaxseed provides ALA linked to cholesterol reduction, Traditional foods with natural benefits are not necessarily 'functional' until modified or used to deliver specific health benefits, Clear labeling and consumer education are essential for correct use