Functional Foods

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What are Functional Foods?

Functional foods are defined as foods that provide additional health-promoting and disease-preventing benefits beyond the basic function of supplying nutrients.

A functional food may be a traditional food which we consume as part of our usual diets; it is shown to have physiological benefits and reduce the risk of chronic disease, i.e. it contains bioactive compounds.

Functional Foods

Bioactive compounds: These are the naturally found chemical compounds present in plant, animal and marine sources, which give desired health/wellness benefit (e.g. omega-3 fatty acids in flaxseeds and lycopene from tomatoes). The bioactive chemicals are also known as phytochemicals, widely present in plant-based diet. These bioactive compounds are present in cereals, fruits, vegetables, legumes, oilseeds, spices and herbs.

Functional foods & Nutraceuticals

The term "functional foods" is often substituted with "Nutraceuticals"

Nutraceuticals are "naturally derived bioactive compounds (isolated or purified from foods) and are generally sold as herbal products or in medicinal forms and have health promoting and disease preventing properties”

Functional foods are “foods which naturally contain a chemical compound (called bioactive compound) which gives that food health-promoting benefits beyond the well-established functions of nutrients contained in them”

List of Functional Foods:

Cereals: Wheat bran, oats, corn
Legumes: Soyabean and soya based products

Functional Foods: Soya Based Products

Oilseeds: Flaxseed oil
Vegetables: Carrots, psyllium, green leafy vegetables, tomatoes, onion, garlic
Fruits: Citrus fruits

Functional Foods: Citrus Fruits

Dairy products: Yogurt & other dairy products
Beverages: Green tea
Fishes: Tuna, Salmon, Mackerel

Functional Foods: Fishes

Herbs & Spices: Turmeric, ginger, fenugreek

Classification of Functional Foods / Nutraceuticals

Basic Foods

Tomatoes (having the natural level of the anti-oxidant lycopene)
Processed foods - oat bran cereal (having the natural level of beta-glucan)

Classification of Functional Foods: Basic Foods

Fortified Foods

Milk with Vitamin D
Grains with added fiber

Enhanced Foods - to have more of a functional component (through traditional breeding, genetic engineering etc.)

Dairy products with probiotics
Eggs with omega-3 (by feeding modified diet to hens)

Classification of Functional Foods: Enhanced Foods

Isolated, purified preparations of active food ingredients (herbal products/dosage form)

Curcumin from Turmeric
Isoflavones from soy
Omega-3 from fish oils

Health Benefits of Functional Foods

Health is considered as one of the main selection criteria of functional foods. Cancers, cardiovascular problems and diabetic complications have a direct correlation with dietary habits. Diet is also shown to play a key role in the prevention and management of other diseases like osteoporosis, obesity, immune responses as well as ageing.

Health Benefits of Functional Foods

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