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Grape Juice and Beverages

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Grape Juice and Beverages

Introduction

Grapes are cultivated in many countries of the world. India produces only about 2.77 per cent of the total world production. However, in productivity India stood first with 23.50 tonnes /ha.

Grape is one of the most perishable fruits and during the process of distribution and marketing, substantial losses are incurred which ranges from a slight loss of quality to total spoilage. Processing is an alternative method of preservation of this fruit for long durations.

Preparation of juices and beverages is being practiced for long. Grape juice may be consumed as 100 % pure juice or may be blended with other juices for improving taste, sugar: acid blend and to improve its acceptability.

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Grape Juice and Beverages

Preparation of Grape Juice

Fully Ripe Grape

Washing

Cream of tarter

Crushing & Pressing in Basket Press

Filtration

Removal of stalk

Clarification by storage at 0°C

Filtration

Bottling and Crown corking

Pasteurization, cooling & storage

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Grape Juice and BeveragesCreame of tarter

1. Cream of Tarter is actually a white, odorless powder and chemically known as Potassium Hydrogen Tartrate, or Potassium Bitartrate.

2. It is formed from sediment left over in barrels after winemaking process.

3. Cream of tartar has multiple uses in food preparation including stabilizing egg whites by increasing their heat tolerance and volume, and preventing sugary syrups, chocolates and candies from crystallizing.

4. Cream of tartar poses a risk for people with kidney disease due to its extremely high potassium content (495 mg per teaspoon). Our daily requirement for potassium is 3500 mg.

5. Cream of tartar also poses laxative effect.

Use of cream of tartar in the small quantities should be no problem.

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Grape Juice and Beverages

Preparation of Mixed fruit Juice

Grape Juice

Mixed Juice

Addition of sugar, acid, flavour etc.

Heating to 95 C for 10 sec

Heat Processing for 15 min.

Aonla (or some other juice/ pulp)+

Juice with adjusted TSS (15 Brix ) and acidity (0.3-.04

%)

Hot filling and Crown corking

Cooling & storage

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Grape Juice and Beverages

Specifications for Juices and Beverages

Product Min TSS (%) Min Fruit Part (%)

Unsweetened juice Natural 100

Sweetened Juice 10 85

RTS beverages 10 10

Fruit juice concentrate

32 100

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Grape Juice and Beverages

Preparation of canned grapes in sugar syrup or grape juice

Glass Jars (Wide mouth)

Sterilize in boiling water

For 1 jar of ½ kg cap.

Grape

Seal the jar air tight

Air dry the jars

Remove pedicel, wash and drain

Sugar + water (1:10)/

grape juice

Boil

Strain through cheese cloth

Hot syrup250 g grapesFill upto the top at temp > 85oC

Heat Process in boiling water for 20 min.

Cool and store

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Grape Juice and Beverages

Grape Juice Concentrate

Fully Ripe Grape

Washing

Cream of tarter, sediments etc

Crushing & Pressing in Basket Press

Filtration

Clarification by storage at 0°C or by

using enzymes

Evaporative concventration upto 70 Brix

Packing, sealing and storage

Filtration

Grape Juice and Beverages

Let us sum up

•Grape juice is the 100 % pure form of juice. Sweetened juice may contain added sugar

•Juice is extracted by crushing and pressing

•Cream of Tarter is actually a white, odorless powder and chemically known as Potassium Hydrogen Tartrate, or Potassium Bitartrate, formed from sediment left over in barrels of grape juice.

•Mixed fruit juice or beverages may be prepared from grape juice after adding the juice / pulp of other fruits and /or sugar, acid, flavour etc.

•Generally preferred juices contain no added preservative, so the juice is preserved by heat processing in boiling water for 20 min.

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