Fermented Products from

Rice

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Fermentation

Advantages of fermentation:

Conversion of complex carbohydrates into simple sugars by anaerobic decomposition

Fermented Products from Rice

Make food more digestible

Make food more palatable

Higher in nutritional value

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Introduction

Rice wine

Products prepared by rice fermentation include:

Rice vinegar

Idli

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Dosa

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Fermented Products from Rice

Alcoholic beverage made from rice

Sake generally contains 18–20% alcohol

Rice wine (Sake)

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Fermentation of rice starch to sugars

Fermented Products from Rice

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Polished rice

Washing and cleaning

Steeping overnight

Cooking

Inoculation with culture (Aspergillus oryzae)

Cultivate till 2 days (koji rice)

Mix koji rice, water, yeast with freshly steamed/cooked rice and cultivate from 10-15 days with addition of extra rice and water each day

Ferment for 2-6 weeks

Cooling to 10ºC

Filteration

Pasteurization

Maturing

Bottling

Flow chart for Sake preparationFermented Products from Rice

White rice vinegar: White rice vinegar is a colourless to pale yellow liquid, higher in vinegar content .

Black rice vinegar: Black rice vinegar is made with black glutinous rice. It is dark in colour, and has a deep, almost smoky flavour.

It is a product made fromfermented rice or rice wine

Red rice vinegar: Red rice vinegar is darker than white rice vinegar, and paler than black rice vinegar, with a distinctive red colour from red mold Monascus purpureus

Rice vinegar

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Fermented Products from Rice

Proportion of rice to black gram is 1:3

Prepared by steaming the fermented batter consisting of rice and black gram grains

Idli

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Fermented Products from Rice

Traditional method of idli preparation

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Rice and blackgram (1:3)

Washing

Soaking for few hours

Grinding into fine paste

Fermentation (by natural microflora)

Steaming in cups

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Fermented Products from Rice

A thin, crisp, fried pancake-like staple food of south India

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Dosa

Soak rice and dehulled black gram (2:1) separately for few hours

Grind to fine paste

Fermentation of batter (by natural microflora)

Spread batter on hot greasy griddle to get crisp pancake

Method

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Fermented Products from Rice

Rice can be made into a number of fermented products such as wine, vinegar, and traditional products like idli and dosa

Let us sum up

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Fermented products are easily digestible and are more nutritive.

Fermented Products from Rice