preservation, value addition & packaging of tender coconut water
DESCRIPTION
To increase the self-life of coconut waterTRANSCRIPT
“ Preservation, Value addition & packaging of tender coconut water”
By
Patel Kinjal S.
College of Agricultural Engineering and Technology
Introduction
Coconut (Cocos nucifera) is a member of the
family Arecaceae (palm family). The term
coconut refers to the fruit of the coconut palm.
The electrolyte profile of coconut water is some
what similar to human plasma.
Coconut water is used to replenish electrolyte lost
in perspiration.
Coconut water, also called coconut juice, is the liquid endosperm
found inside a fresh coconut.
Tender coconut water has an especially refreshing taste and the
least calorie content of all natural juice/beverage, rich in
minerals, vitamins and amino acids.
The water inside the coconut shell is sterile until it opens. As it
comes in contact with air it begins to ferment and within a day
deteriorate completely due to the activity of natural enzyme
polyphenoloxidase (PPO) and peroxidase (POD).
Objectives:-
To increase the shelf life. To fortify TCW by sucrose, vitamins &
natural flavour.
Materials & methods
Tender coconut water
Sucrose/Dextrose
Chemicals (like citric acid, ascorbic acid, potassium meta bisulphite)
Results & Discussion
Shelf life of tender coconut waterPhysiochemical changes
(like acidity, pH, mineral content, sugar content)
Organoleptic changes
(like colour, taste, flavour and fermentation)
TABLE (A):- Parameters of Test and Control samples
Day pH of test sample
pH of Control Sample
Sugar (0Bx) test sample
Sugar (0Bx) control sample
% acidity test sample
% acidity control sample
Minerals (g/100ml) in test sample
Minerals (g/100ml) in control sample
1 4.37 4.61 12 12 1.5 3.5 0.52 0.52
3 4.37 3.70 12 8 1.9 5.1 0.52 0.52
5 4.37 3.73 12 7 2.1 5.3 0.52 0.52
8 4.36 3.79 12 7 2.1 5.5 0.52 0.52
10 4.36 3.81 12 6.5 2.2 5.8 0.52 0.52
12 4.36 3.87 12 6.5 2.2 6.1 0.52 0.52
15 4.36 3.89 12 6.5 2.2 6.3 0.52 0.52
17 4.36 4.0 12 6.5 2.2 6.2 0.52 0.52
20 4.34 3.8 12 6.5 2.1 6.2 0.52 0.52
26 4.26 3.74 12 6.5 2.0 6.0 0.52 0.52
29 4.14 3.74 10 6.5 1.8 6.0 0.52 0.52
32 4.02 3.72 8 6.5 1.6 6.0 0.52 0.52
As pH decreases gradually acidity of product increases.
This gradual decrease in pH has significance as lower pH do not allow pathogenic microorganism to grow and hence act as preservative.
There is fluctuation of pH of control sample of coco fresh because the sample has no preservatives and was kept in ambient temperature as this temperature is most suitable.
day Taste of coco freshTest sample
Taste of coco fresh
Control sample
Colour of coco freshTest sample
Colour of coco fresh Control sample
Flavor of coco freshTest sample
Flavor of coco freshControl sample
FermentationIn coco freshTest sample
FermentationIn coco freshControl sample
1st Normal Normal Normal Normal Normal Normal No sign No sign
3rd Normal Off taste Normal Off color Normal Off flavor No sign Little fermented
5th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
8th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
10th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
12th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
15th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
17th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
20th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
26th Normal Off taste Normal Off color Normal Off flavor No sign Fully fermented
29th Normal Off taste Normal Off color Normal Off flavor Little Fully fermented
32nd Normal Off taste Off color Off color Off flavor
Off flavor fermented Fully fermented
TABLE (B) Organoleptic Quality of Test and Control samples
Conclusions
Table A & B shows that the shelf life of
coconut water before application of this
technology is one to two days only.
The processed tender coconut water shows
that their shelf life is more than one month.
Shelf life of product is extended by application
of hurdle technology.