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This article throws light upon the top four examples of flavanones. The examples are: 1. Hesperetin 2. Naringenin 3. Eriodictyol 4. Homoeriodictyol.

Flavanones Example # 1. Hesperetin:

Hesperetin belongs to the flavanone class of flavonoids. Hesperetin, in the form of its glycoside hesperidin, is the predominant fla­vonoid in lemons and oranges.

Hesperetin

Sources:

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Number of citrus juices.

Uses:

1. Antioxidant

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2. Anti-aromatase activity

3. Cholesterol lowering

4. Anti-allergic

5. Hypolipidemic

6. Vasoprotective

7. Anti-carcinogenic

Vasodilator effects of hesperetin is basically due to the inhibition of PDE1 and PDE4 ac­tivities, which may be useful in hypertension

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Flavanones Example # 2. Naringenin:

Naringenin is a flavonone. It is a yellow crystalline powder having melting point: 247-250 C. Naringin is the aglycones of narin­genin. Naringin is known as an antioxidant in the body. Unfortunately, this bioflavonoid is difficult to absorb on oral ingestion.

Naringenin

Sources:

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Grapefruit juice.

Functions:

i. Antioxidant

ii. Free radical scavenger

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iii. Anti-inflammatory

iv. Carbohydrate metabolism promoter

v. Immunity system modulator

vi. Anti-ulcer agent

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vii. Estrogen antagonist, which inhibit the action or biosynthesis of estrogenic compounds

viii. Antihypertensive

ix. In treatment of Alzheimer’s disease

x. Reduce oxidative damage to DNA in vitro

Flavanones Example # 3. Eriodictyol:

A colorless crystalline compound C15H12O6 derived from flavanone and found es­pecially in the leaves of some resinous shrubs of in the genus Eriodictyon. Eriodictyol is one of the 4 flavanones identified by Symrise in this plant eliciting taste-modifying properties; homoeriodictyol, its sodium salt and sterubin.

Eriodictyol

Eriodictyol was also found in the twigs of Millettia duchesnei, in Eupatorium arnottianum and one of its glycoside in rose hips (Rosa canina).

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Uses:

Bitter-masking.

Flavanones Example # 4. Homoeriodictyol:

Homoeriodictyol is a bitter-masking fla­vanones extracted from Herba Santa (Eriodictyon californicum) a plant growing in America. Homoe­riodictyol (3′-methoxy-4′, 5, 7-trihydroxyflavanone) is one of the 4 flavanones identified by Symrise i n this plant eliciting taste-modifying: homoeriodic­tyol sodium salt, eriodictyol and sterubin.

Homoeriodictyol

Uses:

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Homoeriodictyol Sodium salt elicited the most po­tent bitter-masking activity by reducing from 10 to 40% the bitterness of salicin, amarogentin, pa­racetamol and quinine. However no bitter-masking activity was detected with bitter linoleic acid emulsions. According to Symrise’s scientists ho­moeriodictyol sodium salt seems to be a taste- modifier with large potential in food applications and pharmaceuticals.