antioxidant activity of chocolates

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ANTIOXIDANT ACTIVITY OF CHOCOLATES

Presented by,

P.K.P.N. Shyamalee

Department of Food Science & Technology

University of Peradeniya


Introduction• Chocolate is derived from cocoa

beans. • Chocolate has nutritional,medicinal

and mystical properties. • Chocolate has higher antioxidant

activity.


What are antioxidants...???

A molecule that inhibit the oxidation of other molecule.

Remove free radicals.


Antioxidant in cocoa and chocolate.

Cocoa contain flavonoids.

Flavonoids contribute

to antioxidant activity.


• Chocolate is produced by using cocoa mass.

• So chocolate has high amount of antioxidant.


Flavonols in chocolate…. Catechin

Epicatechin


Procyanidin


Total polyphenol and flavonoids content in cocoa and chocolate


Health benefits of antioxidant in chocolate

Lower the risk of cancer.

High-flavanol chocolate protect the skin from harmful UV effects.


Reduce risk of heart attack survivors.

Chocolate reduce cardio vascular deseases.

Anti aging property.

preventing increased future signs of aging.


Improve blood flow. increases blood flow to all parts of

the body including the heart and the eyes.

Lower blood presure. Flavonoids contained in dark

chocolate also enhance the formation of nitric oxide within a body to relax the blood vessel walls.


How measure the antioxidant capacity of chocolate…..???

ORAC score is the current standard method.

The ORAC value rates the capacity of the substance to prevent oxidation.


Types of cocoa and chocolate and their ORAC values

Type Rating of antioxidant level (ORAC)

Natural cocoa powder

25606

Cocoa(dry) 6992

Milk Chocolate 6360

Dark Chocolate 2464


Factors affecting antioxidant activity of chocolate

Country of origin. Fermentation. Manufacturing process. Bioavailability of cocoa polyphenol.

antioxidant activity of chocolates

Health & Medicine