Kernel Based Coconut Products
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Virgin Coconut Oil
Coconut oil obtained from coconut milk is called virgin coconut oil. Traditional
and modern methods are available for the manufacture of virgin coconut oil. In the
traditional method, milk extracted from grated coconut kernel is boiled to get oil.
Of late, the traditional method has been partially mechanized using a bridge press
and mechanical grater. The modern method of extracting oil from fresh coconut kernel
is known as wet processing.
The Virgin coconut oil is considered superior for use as edible oil, hair oil and
baby oil because of its pleasing aroma and purity. It is applied on the body of
babies to protect from skin diseases. Because of its low FFA content, this oil has
a longer shelf life.
Composition of VCO as per APCC
|
Sl. No
|
Parameters
|
|
1
|
Moisture (%)
|
Max 0.1
|
2
|
Matters Volatile at 1200 C (%)
|
Max 0.2
|
3
|
Free Fatty Acid (%)
|
Max 0.2
|
4
|
Peroxide Value meq/kg
|
Max 3
|
5
|
Relative density
|
0.915 – 0.920
|
6
|
Refractive index at 400 C
|
1.4480 –1.4492
|
7
|
Insoluble impurities per cent by mass
|
Max 0.05
|
8
|
Saponification Value
|
250 – 260 min
|
9
|
Iodine Value
|
4.1 -11
|
10
|
Unsaponifiable matter % by mass
|
max 0.2 - 0.5
|
11
|
Specific gravity at 30 deg./30 deg. C
|
0.915 – 0.920
|
12
|
Polenske Value
|
min 13
|
13
|
Total Plate Count
|
< 0.5
|
14
|
Color
|
Water clean
|
15
|
Odor and Taste
|
Natural fresh coconut scent,
free of sediment,
freefrom rancid odor and taste
|
Desiccated Coconut
Dehydrated coconut meat in the grated and shredded form is desiccated coconut (DC).
A large number of units in India are manufacturing DC which is mainly absorbed by
the confectionery and other food industries. DC is also used as a substitute to
grated coconut in various household preparations. DC is available in different grades
based on the fineness of the material.
Composition of Desiccated Coconut
|
Sl. No
|
Item
|
Quantity
|
1
|
Moisture
|
1.3-2.5%
|
2
|
Protein
|
6.0-6.6%
|
3
|
Oil
|
68-72%
|
4
|
Carbohydrate
|
18-20%
|
5
|
Crude fibre
|
4-6%
|
Source* - Tropical Foods, Chemistry and Nutrition,Volume 2, George E Inglett
|
Coconut Milk
Coconut Milk is the oil-protein-water emulsion obtained by squeezing fresh grated
coconut kernel. The undiluted and diluted forms are called coconut milk and the
concentrated form is coconut cream. Coconut milk is obtained by extraction of fresh
coconut wet gratings with or without water. This is an instant product, which can
either be used directly/diluted with water to make various preparations such as
fi sh & meat dishes, curries, sweets, deserts, puddings, cocktails, cakes, cookies,
coconut jam, ice creams etc. It can also be used in the manufacture of bakery products
and for coconut milk fl avouring food stuffs. Preserved forms of coconut milk such
as canned cream or milk and dehydrated whole milk are now available in many coconut
growing countries. Commercial production of these products has been promoted in
the Philippines, Thailand, Indonesia, Western Samoa, Sri Lanka and Malaysia and
to some extent in India. Indonesia is the leading exporter of coconut milk followed
by Sri Lanka, Thailand and Philippines.
Coconut Skimmed Milk
plant protein and is an invaluable material for the preparation of milk substitutes.
Coconut skimmed milk is a solution of the soluble components of coconut after the
cream is separated in a cream separator. Skimmed milk is a good source of quality
protein suitable for the preparation of many useful food products or as supplemental
protein source, especially in regions deficient in animal proteins. Freshly prepared
coconut milk from pared kernel is filtered through a 120 mesh vibrating screen and
the pH of the filtered milk is raised from 6.3 to 7.0 with the additions of sodium
hydroxide. The milk is then pasteurized at about 60oC for one hour and subsequently
centrifuged in a cream separator to yield the aqueous phase or the protein rich
skimmed milk.
Spray Dried Coconut Milk Powder
Spray drying is the best method for the preservation of coconut milk. Spray dried
coconut milk powder is reconstituted into coconut milk by adding water which can
be used to make various food preparations. The product offers additional advantages
such as less storage space, bulk packaging at reduced cost and longer shelf life.
Technology for the manufacture of spray dried coconut milk powder is available with
the Coconut Development Board.
Coconut Cream
Processed and packed coconut cream is a ready-touse product which can either be
used directly or diluted with water in various edible preparations. Coconut cream
when partially defatted is called coconut milk. Coconut cream/ milk is used as an
ingredient in household recipes and as a component of processed foods. Coconut milk
is also used as coconut cream, a mixer in alcoholic drinks. Coconut milk/cream is
available in pouches, bottles and tetra packs. Technology for the manufacture of
coconut cream is available with Coconut Development Board.
Product Specification
|
Appearance
|
White smooth creamy consistency
|
Flavour
|
Coconut
|
Fat
|
23%
|
Protein
|
4%
|
Sugars
|
5%
|
Others
|
1%
|
Water
|
67%
|
Coconut Chips
Coconut chips are a ready-to-eat snack food. It is prepared in salted and sweetened
forms. The Central Plantation Crops Research Institute, Kasaragod has standardized
the process for preparation of chips. Coconuts of 9-10 months are used for the preparation
of chips.
Composition of Coconut Chips
|
Sl. No
|
Parameters
|
per 20 g
|
1
|
Fat
|
9.42g
|
2
|
Lauric acid
|
4.82g
|
3
|
Calcium
|
2.10mg
|
4
|
Fiber
|
1.93g
|
5
|
Iron
|
1.30mg
|
6
|
Cholesterol
|
0.00
|
Coconut Oil
Coconut oil is rather a unique cooking oil as it contains the short and the medium
chain saturated fatty acids. It fi nds extensive use in the food industry due to
its characteristics such as easy melting behaviour, resistance to oxidative rancidity,
pleasing fl avour and good digestibility. Coconut oil has gained importance as a
dietary fat because of its high content of lauric acid, the source of monolaurin
in the body and 16W content of Omega 6. It can be used for manufacturing margarine
and shortenings. Coconut oil is preferred as a fat in the preparation of fi lled
milk, infant milk powder, ice-cream and confectionery and bakery products. Because
of its stable character, coconut oil is the preferred fat for deep frying.
Studies undertaken by the Biochemistry Department, University of Kerala showed that
coconut oil:
- Does not elevate blood total cholesterol and increases blood HDL cholesterol
- If consumed along with coconut kernel, lowers blood cholesterol
- Does not elevate LDL cholesterol or LDL cholesterol/HDL cholesterol ratio
- Decreases serum triglycerides
A large number of branded coconut oil in consumer packs are marketed in the country.
Coconut oil is refi ned for industrial use. The refi ned coconut oil is water white
in colour with no aroma. Since coconut oil has the lowest level of unsaturated fatty
acids among all vegetable oils, the cost of hydrogenation is much less than all
other oils.
Coconut oil - Product Specification
|
(IS-542-1968)
|
Moisture % wt., Max.
|
0.25
|
Colour in 1/4 cell Lovibond Y+5R, not Deeper than
|
4
|
Acid value, Max.
|
2.0
|
Unsap. matter % by wt., Max.
|
0.8
|
Polenske Value, Min.
|
0.8
|
Copra
Two types of copra, namely the milling and the edible, are made in India. The milling
copra is used to extract oil while the edible copra is consumed as a dry fruit.
Edible copra is made in the forms of balls and cups. Copra contains the highest
percentage of oil compared to other oil seeds. It contains 15-20 percent carbohydrates,
9 percent protein and 4.10 percent crude fi bre besides 65-68 percent fat. The carbohydrate
fraction consists of a large percentage of cellulose and sucrose together with other
sugars. Besides glucose and fructose the presence of galactose, raffi nose and pentoses
is also reported.
Coconut Water based Products
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Tender Coconut Water
The water of tender coconut (TCW) is a sterile, nutritious and thirst quenching
health drink. It possesses therapeutic properties. The TCW has a calorifi c value
of 17.4 per 100gm.
Parameters
|
In 100 ml
|
Total solids%
|
6.5
|
Reducing sugars %
|
4.4
|
Minerals %
|
0.6
|
Protein %
|
0.01
|
Fat %
|
0.01
|
Acidity mg %
|
120.0
|
pH
|
4.5
|
Potassium mg%
|
290.0
|
Sodium mg%
|
42.0
|
Calcium mg%
|
44.0
|
Magnesium mg %
|
10.0
|
Phosphorous mg%
|
9.2
|
Iron mg%
|
106.0
|
Copper mg%
|
26.0
|
TCW is rich in potassium and other minerals. Sugars form an important constituent
of the TCW. The concentration of sugars in the nut water steadily increases from
about 1.5 per cent to 5-5.5 per cent in the early months of maturation and then
slowly falls reaching about 2 per cent at the stage of the full maturity of the
nut.
Vinegar
Coconut vinegar is made from fermented coconut water and is used extensively as
a preservative and fl avouring agent in pickles, salads, sauces and many other condiments.
Coconut vinegar is also made from the sap of the coconut tree and is similar to
the fresh coconut water. Naturally fermented coconut vinegar is rich in minerals
and vitamins such as beta carotene, calcium, iron, magnesium, phosphorous, potassium
and sodium. Raw, unfi ltered organic coconut vinegar is similar to the one that
is fermented naturally. Coconut vinegar helps in digestion and improves the quality
of cooked meat and fi sh. It is a healthier alternative to synthetic vinegar.
Coconut squash
It is a nourishing and refreshing healthy soft drink concentrate prepared by mixing
coconut water, sugar and natural preservatives like lemon and ginger. It is rich
in vitamins and minerals with low calorie. The product has a shelf life of three
months under ambient conditions. The product is a new item and is gaining popularity
in Asia and Pacific countries.
Nata-de-coco
Nata-de-coco a cellulosic white to creamy yellow substance formed by acetobacter
aceti subspecies Xylinium, on the surface of sugar enriched coconut water / coconut
milk / plant extract / fruit juices or other waste materials rich in sugar.
It is popularly used as a dessert. It is also used as an ingredient in food products,
such as ice cream, fruit cocktails, etc. “Nata” is a Spanish word, derived from
the latin word “Natare” meaning “to float”. Nata making plays an important role
in the development of our coconut industry because of the growing interest in its
production from coconut water, an abundant waste product of coconut processing units.
Nata can be prepared from various fruits like banana, pineapple, tomato etc. and
the product named after the media used, like “Nata de coco” from coconut, “Nata
de pina” from pineapple etc. We can also use coconut milk, finely shredded coconut
meat or coconut water in preparing Nata.
Coconut Inflorescence Based Food Products
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Neera
The vascular sap collected from immature unopened coconut inflorescence is popularly
known as Neera in fresh form. It is a sugar containing juice and is a delicious
health drink and a rich source of sugars, minerals and vitamins. It is sweet and
oyster white in colour and translucent. It is tapped from the coconut inflorescence
and is filtered, pasteurized and bio preservatives added to preserve the product.
Treated Neera can be preserved in cans upto two months at room temperature. It can
also be packed in tetra packs or glass bottles. Tapping can be done for six months
in a year. It is an abundant source of minerals, 17 amino acids, vitamin C, broad
spectrum B vitamins and has a nearly neutral pH.
The composition of Neera
|
Sl.No
|
Parameters
|
Raw Neera
|
Packed Neera
|
1
|
pH
|
6.2
|
5.2
|
2
|
Brix/TSS
|
15.13%
|
15.37%
|
3
|
Total sugar
|
15.00 %
|
15.00 %
|
4
|
Total mineral matter
|
0.27 %
|
0.26 %
|
5
|
Protein
|
0.106 %
|
0.106 %
|
6
|
Fat
|
traces
|
nil
|
Coconut Jaggery
Fresh neera when boiled to 118-120o C and allowed to cool for solidification. The
solid mass is known as coconut jaggery or ‘gur’. Coconut jaggery is made in traditional
coconut growing tracts in the country on a cottage scale. Calcium and phosphorus
are the important minerals contained in coconut jaggery. Treacle is another product
manufactured from sweet toddy. It is obtained by boiling down the toddy. Fresh toddy
is also a good source of baker’s yeast. The fresh neera rapidly ferments and the
sugar is replaced by about 5-8 per cent alcohol, which on distillation yields arrack.
Fermented neera on acetic fermentation yields vinegar containing 4-7% acetic acid.
Nutritional value of jaggery
|
Sl No
|
Parameters
|
Amount (%)
|
1
|
Moisture
|
9.1
|
2
|
Carbohydrate
|
87.54
|
3
|
Protein
|
0.72
|
4
|
Minerals
|
1.97
|
5
|
Fibre
|
0.46
|
Coconut Palm Sugar
The coconut palm syrup or jaggery can be crystallized to produce fine granules of
sugar. Transition of coconut jaggery into a ground granule sweetener is more accepted
by global markets. The recovery of palm sugar from coconut palm jaggery is 15%.
The application of this sugar is tremendous and offers huge potential owing to its
most important health attributes, the low Glycemic index and the high nutrient content.
It can be the most suited alternative sweetener, especially when agave sugar is
being rejected owing to the high fructose content. This alternative sugar industry
is estimated to be a $1.3 billion industry and hence the market prospects are enormous.
Coconut Flower Syrup
This is a product similar to jaggery with high content of minerals. It is a rich
source of potassium. It has good content of sodium and is free from total fats and
cholesterol. It is produced when fresh Neera is heated and concentrated into syrup.
The input output ratio is 6:1. The syrup has 50% sucrose content and possess low
glycemic index at the levels of 35 GI which indicates that low levels of sugar gets
absorbed into the blood thus making it safe for diabetic patients.
Nutritional Value of Syrup
|
Sl No
|
Parameters
|
Amount (%)
|
1
|
Total Soluble Solids
|
81.44
|
2
|
Carbohydrate
|
65.43
|
3
|
Protein
|
0.39
|
4
|
Minerals
|
2.00
|
5
|
Acidity
|
0.04
|
Coconut Convenience Food Products
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Coconut Biscuits
Coconut biscuits are ready to eat snack products prepared from maida and coconut
powder. It can be prepared in different varieties through addition of cocoa, butter;
ginger etc. The product has a shelf life of three months under ambient conditions.
It is mainly consumed as a snack item. Coconut biscuits are highly nutritious and
delicious with low calories and high fiber content and is one of the healthiest
snack items which is quite popular and is in great demand in Asia and Pacific countries,
USA, European countries, Middle East and African countries.
Coconut Candy
Coconut candy is prepared from grated coconut mixed with coconut milk. It has high
fiber content and helps prevent intestinal sluggishness. It is a newly introduced
product mainly produced in Asia and Pacific Countries.
Coconut Chocolate
It is a sweet confectionery item prepared from coconut gratings sugar, milk butter
with a coating of chocolate. It is rich in protein, carbohydrate and fiber. It can
be made more delicious through addition of cashew, badam and other dry fruits. The
product has a shelf life of three months under refrigerated conditions. The product
is having extensive demand in Europe, North America, Australia, Middle East and
China.
Coconut Burfi:
It is a snack prepared by roasting coconut gratings. A procedure for preparation
of coconut burfi was standardized. Coconut gratings (after extraction of fat) were
roasted, then added fat at the rate of three percent and sugar at ten percent gave
highest organoleptic qualities. The product has good nutritive value with protein
(10.23%), Ash (2.1%) and carbohydrates (60.87%).
Coconut Shell Based Products
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Coconut Shell Powder
Coconut shells free from contamination of coir pith, etc., are broken into small
pieces and fed into a pulveriser. The powder from the pulveriser is fed into a cyclone
and the parallel product is collected in bag filters. The shell powder is then fed
into a vibrating sieving machine and packed according to mesh size requirements
for various end uses. The rejects from the sieving machine can be recycled in the
pulverizer for size reduction. The main requirements for consistent good quality
of coconut shell powder are proper selection of shell of proper stage of maturity
and efficient machinery.
Product Specification
|
Appearance
|
clear light brown free flowing powder
|
Moisture
|
10 per cent max.
|
Apparentdensity
|
0.6 to 0.7 g/cc
|
Ash content
|
1.5 max.
|
Sieveanalysis
|
Retained on 200 mesh BS sieve shall not exceed 0.1%
|
Coconut Shell Charcoal
Shell Charcoal is obtained by burning the shell of fully matured coconuts with a
limited supply of air so that they do not burn away to ash but are only carbonized.
The manufacture of shell charcoal shows from the coconut shell has become a very
important economic and commercial activity. Furthermore, coconut shell charcoal,
which was relatively a minor product in the past, has now developed into a general
commercial commodity due to its intrinsic value as a raw material for the manufacture
of activated carbon. Coconut shell charcoal are of two types: viz Coconut shell
charcoal and granulated shell charcoal.
The quality standards for shell charcoal as per Asian and Pacific Coconut Community
(APCC) are as follows:
|
Moisture
|
Less than 10%
|
Ash
|
Not more than 2%
|
Volatile matter
|
Not more than 15%
|
Fixed carbon
|
Not more than 75%
|
Foreign matter
|
Not more than 0.5%
|
Colour
|
Black
|
Size
|
Not more than 5%, shall passa 0.63 cm mesh sieve.
|
Activated Carbon
The process of activation is carried out in two stages. Firstly the coconut shell
is converted into shell charcoal by carbonization process which is usually carried
out in mud-pits, brick kilns and metallic portable kilns. The coconut shell charcoal
is activated by reaction with steam at a temperature of 900oC -1100oC under controlled
atmosphere in a rotary kiln. The reaction between steam and charcoal takes place
at the internal surface area, creating more sites for adsorption. The temperature
factor, in the process of activation is very important. Below 900oC the reaction
becomes too slow and is very uneconomical. Above 1100°C the reaction becomes diffusion
controlled and therefore takes place on the outer surface of the charcoal resulting
in loss of charcoal.
Products Specifications
|
PH Value
|
6.5 - 7.5
|
Methylene Value adsorption mgm/gm
|
190 - 350
|
Adsorption capacity at % by mass (min)
|
45
|
Moisture (max.)
|
5%
|
Ash (max)
|
5%
|
Hardness
|
90
|