03 May 2019

Small Scale Production of Tuti Fruitee



Small Scale Production of Tuti Fruitee

Vijay Kumar Shah

shahvk55@gmail.com   +91 99353 60033   WhatsApp A 091 98397 84033

INTRODUCTION:

Tuti Fruitee is a small raw papaya cube impregnated with colored sugar syrup and other additives.
 Care should be taken that during processing cellular structure in not damaged and pieces remain crisp and succulent.  A good Tuti Fruitee will be:
i)                    Pieces having sharp edges and retaining its shape.
ii)                  Will be crisp and will not leave any fibrous residue in mouth.
iii)                It will be of bright color and not dull in appearance
iv)                There will be minimum free syrup on surface and they will not be sticky.

FOOD LAWS:

Following acts covers Tuti Fruitee:
            Fruit products Order (F.P.O.)
            Prevention of Food Adulteration Act.
            Packaging Commodities Act.

It is mandatory to obtain a license under F.P.O. before commencing production.

As per law Tuti Fruitee should have
            Brix                 : minimum 68
            Preservative     : maximum 250 PPM sodium Benzoate
            Color               : maximum 0.2 Gms/Kg of finished product.

Other desirable characteristics are:
            pH                   : 3 to 3.5
            Invert Sugar    : 33% to 50%
            Size of pieces  : 5 to 6 mm cubes.
            Free from seeds, peels and other foreign matters.   

RAW MATERIALS :

Basic raw materials are followings:
i)                    Raw Papaya
ii)                  Sugar
iii)                Conditioning agents: salt, alum etc.
iv)                 Chemical Additives: food color, preservatives, food acids, bleaching agents etc.

Raw Papaya:

Papaya of any variety is good.  Even latex extracted papaya is suitable for manufacturing Tuti Fruitee.  They should be firm and white inside. A few yellowish papaya is not objectionable, provided they are firm.  Soft papayas are total loss during processing. Size of papaya is immaterial, but larger papaya will give more yields.  Ask for papaya of over 750 gms only.

Papaya provides basic structure to hold sugar syrup, and the crisp crunchy texture. It is white so  it is easily colored. It is not having any prominent taste or flavour of its own, so it blends well with any product in which it is added.   Again it withstands the physical and mechanical shocks while processing of the product very well.  Any other fruit/vegetable, which can fulfill this requirement, will serve the purpose. Ash gourd is another suitable fruit, but it requires more careful handling.  Bottle gourd, red pumpkin etc. has also been tried, but they prove a poorer substitute. Carrot may be good.



Sugar:
Use S 30 grade.  It should not have many black specks and should yield light colored transparent syrup.  However do not go for costly sugar of large crystal size.  Better select a mill that produces good quality sugar.
Sugar provides the sweetness.  It also helps in preservation. It is most costly ingredient of Tuti Fruitee.


Salt:
It should be white and free from dirt and insoluble matters.  Dissolve a spoonful of salt into water in a glass beaker. Solution should be white, transparent and without settled or suspended impurities.

Salt is not a direct additive.  It is used as conditioning agent and as a preservative.  The raw papaya stock can be held in brine for a long time. Even over a year. The lactic fermentation, which takes place in brine, provides a desirable elasticity to fruit cells that enables it to withstand further handling better. It  leaches out the undesirable raw papaya flavour. However salt is a nuisance too.  It creates effluent disposal problem, as salt water spoils the land for agriculture purpose and  pollutes the underground water. It is important to work out a method to eliminate salt. Lime has been tried, but still salt is most common as it is not only a conditioning agent, but preserves raw papaya  to act as buffer stock.

Alum:
It should be free from iron.  Normally commonly available alum is reddish, which indicates presence of iron.  Potash Alum is good.

Alum provides the mechanical strength to the fruit pieces, so that the cellular structure does not collapse under osmotic pressure.  If the water hardness in the factory is high, or the product has been held too long in the brine, it is not needed.  One has to judge and standardize its use by experience.  It does give sharp edges and shine to the product.

Sodium Benzoate:
Use only food grade and with ISI mark.  Ganesh Benzoplast products are good.
It is more convenient to use it in solution form.  Dissolve 1 Kg of sodium Benzoate into 2 Liter of boiling hot water.  It will yield 2.5 L of solution of 40% strength, Weight/volume.
100 ml of this solution            = 40 Gms of sodium benzoate
100 GMS sodium benzoate = 250 ml of solution. 
As per law both sodium benzoate and sulfur di oxide are permitted.  But sulfur di oxide will bleach the color of Tuti Fruitee hence only sodium benzoate is used.

Citric Acid:
Citric acid must be good. Sometimes it has buffer salts, that interferes with sugar inversion. Often it is adulterated with alum. Fruit acid like malic or even acetic can be used.
Prepare a solution of 50% strength weight/volume.  Dissolve 1 Kg of acid into 1.4 Liter of boiling hot water.  It will yield 2 Liter of solution.
100 ml of this solution            = 50 Gms of acid
100 Gms acid               = 200 ml of solution.

Citric acid acts as anticristylising agent by inverting part of sugar in situ.  It also lowers pH thus helps in preservation as sodium benzoate is more effective at lower pH. It is recommended to use liquid glucose to control sugar crystallization, but it is a costlier proposition. 

Food Color:
Any color with good shade and purity is good. Idacol is a good brand in India. It is more economical to use basic dye rather than blended colors. Normally basic dyes are of 85% to 90% strength, while the blended colors are available in 20% to 30% strength.
Color provides the attractive look to Tuti Fruitee and also makes the product in which it is added
colorful.





Red     : Carmoisine or Ponceau 4R or a blend of two depending on the shade desired.        Ponceau 4R is of lighter shade while Carmoisine is darker.      
Green  : A blend of Tartrazine and Brilliant Blue FCF is good. The ratio of two can be worked out depending on the shade desired.  More of tartrazine will be light green, while vice versa will be darker.
            The other blue color permitted is Indigo Carmine. It is much economical but it fades within a short time, so it should never be used. Fast Green FCF is another color to be tried, but it is not easily available in our country.  Apple Green of Idacol is good amongst blended color available.
Yellow            : Tartrazine
Orange            : Sunset Yellow.
Prepare 10% solution by dissolving 1 Kg color into 10 L of boiling hot water solution.
100 ml of this solution            = 10 Gms of color
100 Gms color              =  1 Liter of solution.

4)      Process Flow Chart:
(A) Brining of papaya Cubes:

Receive and weigh Papaya
 


            (Mechanical peeling)                                                               (Manual Peeling)
 

            Feed whole papaya in machine and peel                                              Halve papaya
 

                 Trim and halve                                                                         Blanch
 

             Deseed and inspect                                                              Brine for 5-6 days
 

                                                                                                Peel and deseed
(Imported Dicer)                     (Indian Dicer)                                                
    
                                    Brine for 5-6 days                                                Inspect
                                                                                                                 
      Cube                               Cube                                                              Cube
 

       Brine                             Brine                                                             Brine


Preparation of Tuti Fruitee


Brined papaya cubes
 

                                                                      Debrine
                                                                                                                                          Alum   Blanch  and Cool
                                                                                                                                                Sugar   Add sugar and leave overnight
 

            Syrup, color, Preservative, acid cook to desired brix                             store
                                                                                                                                                            Drain Syrup            syrup                                                                                                                                                               Cool and dry Tuti Fruitee
                                                                                                                                   

                                                                         Pack

           

5)      Recipe:
A retreat recipe is given.  As their will  be always left over syrup from previous batches, it is used in subsequent lots.  Followings are the recipe of Tuti Fruitee with only sugar and with half the sugar replaced with syrup.

Recipe Of Tuti Fruitee


With only sugar
With Sugar + Syrup
Blanched Papaya Cubes
100 Kg
100 Kg
Sugar
    For mixing first day

  70 Kg

  70 Kg
    During Cooking
  70 Kg
     -
Syrup of 70 brix during cooking
     -   
 100 KG
Citric Acid
200 GMS
100 GMS
Sodium Benzoate
  40 GMS
  20 GMS
Color
  40 GMS
  20 GMS
                               
               Finish at 72 Brix (of syrup)
It will yield
            Tuti Fruitee                 115 – 120  Kilo
            Syrup of 70 brix                        80 -    85  Kilo
                        Total                200          Kilo                                    

The product produced as per above recipe will confirm to Indian Food Laws.                                
Recipe with various other proportions of sugar and syrup can be similarly worked out. It is observed that 140 Kilo sugar/100 kilo pieces will keep the pieces fully submerged into syrup until end.
So total quantity of sugar from syrup + dry sugar should be in that ratio.

Syrup darkens the color of Tuti Fruitee, so use it cautiously. Maximum 50% of sugar is replaced by syrup.
Normally do not use any syrup in Yellow Tuti fruitte. In red Tuti Fruitee besides red both yellow and orange syrup can be used. Yellow syrup can be used in any color Tuti Fruitee
Other additives are added based on dry sugar in the lot, as syrup already contains these chemicals. Calculate total quantity of sugar to be added in the lot, and calculate quantity of additives to be added as bellow:
            Color               30 gms/100 Kilo sugar rounded to 40 Gms for 140 Kilo sugar
            Sodium Benzoate        30 gms /100 Kilo sugar rounded to 40 gms for 140 Kilo sugar.
            Citric acid       150 gms/100 kilo sugar rounded to 200 Gms for 140 kilo sugar.


Tuti Fruitee of lower brix

Although not permitted by law many manufacturers do make Tuti Fruitee of lower brix due to competition. As these are bound to ferment and also mould will grow, quantity of Sodium Benzoate is raised even above 1000 PPM to preserve it.

They often use less sugar, so that sugar syrup dries out in the pan itself while cooking. However, this creates another problem.  As all the pieces will not get same amount of sugar.  The pieces in the bottom of the pan is likely to remain longer in contact with syrup, and thus absorb more sugar, and pieces on top vice versa.

Our suggestion is to use sufficient sugar so that there is sufficient syrup formed to keep all pieces submerged until the end of cooking. There will be no loss of sugar as the excess sugar added will be recovered in the form of syrup, but quality will be more uniform and better.
If final batch weight is 2 times the quantity of pieces, there will be sufficient syrup to keep pieces submerged. The calculation for sugar can be made as bellow:
                           2 x desired brix x weight of pieces
Weight of sugar =  
                                                100




For example:
            Papaya Cubes = 100 Kilo       Desired Brix =            55        Syrup =           nil
                        Sugar required is {2x 55 x 100} /       100 = 110 kilo.

Other additives in low brix Tuti Fruitee


In a batch of 100 kilo pieces it should be as bellow:
            Color               :           40 Gms.
            Citric acid       :           200 Gms.
            Sodium Benzoate:       200 Gms.
Now if sugar syrup from previous batches are used it will contain part of the additives added in that batch. So that should be taken into account otherwise concentration of these will increase excessively.
Therefore, it is easiest to add additives based on sugar only. For example: 
 A typical recipe of 55 Brix Tuti Fruitee is as bellow:

Recipe of Low Brix Tuti Fruitee


Sugar only
With 50%syrup of 55 brix
Blanched Papaya cubes
100 Kilo
100 kilo
Sugar- while mixing
70 kilo
55 kilo
Sugar- while cooking
40 kilo
 -
Syrup of 55 brix
-
100 Kg
Citric Acid
200 gms
100 gms
Sodium Benzoate
200 gms
100 gms
Color
40 gms
20 gms

End brix                                  55 to 57
            Yield   Tuti Fruitee     100 to 105 kilos
                        Syrup of 55 brix          100 to 95 kilo

Similar recipe can be worked out for any desired brix and combinations. 

6) The Process

i) Receipt of Papaya:
The fruits are generally transported loose in truck/tempo. It is weighed on weigh bridge/platform balance.  It should be preferably unloaded on pucca floor.  Unloading them on ground is not desirable, as there are chances of small pebbles being embedded in the papaya flesh, which will later break the knife of cutting machine.

ii) Peeling:
a)      Mechanical peeling: It is done in abrasive peeler.  Whole papaya is fed into it where it is rotated and rubbed against emery stones, which rubs off outer peel. The papaya is then trimmed to remove remaining peel. It washes papaya too.
As papayas are large fruits, the machine should be of large diameter, minimum 1 meter diameter, otherwise breakage would be more. It will peel approximately 10 MT papayas in 4-5 hours.  All contact parts should be of SS as iron will eventually rust which will contaminate the fruits, and Tuti Fruitee made with it will be of dark color. In smaller machine, there will be insufficient peeling and also more breakage.

The peeler generates lot of effluent water rich in BOD. The peeling losses are also more upto 40% even, the peeler keeps off rubbing the fruit, and once the hard peel is removed, the inner soft flush is removed very fast. So any over peeling results in heavy losses.  There is a tendency amongst workers to overpeel to save on trimming which is a laborious work.  So this tendency should be watched.

b)      Hand Peeling:
Papaya contains papain enzyme, which are very corrosive to hand.  Papaya is cut into two halves. If there is long stem, it is also removed.  Fruits are then blanched in boiling water for 4-5 minutes and immediately cooled with water sprays.  This process will inactivate the enzyme.    Cutting fruits into two facilitates heat penetration during blanching , minimizes tendency for floating of fruit, It is also necessary for removal of seeds.
The fruits are then dipped into 10% brine solution for 4 to 6 days to soften peel. They are then peeled with potato peeling knives.
It is observed that if papaya is kept for long in brine, the enzymes get sufficiently inactivated and does not affect hand, but boiling does facilitate peeling
 Hand peeling is laborious, but it generates only solid waste, which is easier to dispose off.  It is either put into waste yard and allowed to rot, or spread on ground to sun dry and then burnt.  As it contains salt, it cannot be used for manure.

iii) Deseeding:
The seeds must be removed.  They are undesirable.  Particularly black seeds look like insect head in the cakes and sweets.  The brinning loosens the seed, so it is better done after that.  Papaya is knocked against floor or any hard surface, to remove seeds.  The remaining are then removed by the pointed head of peeling knife.
Cutting papaya into broad rings and then putting them on a vibratory table is also tried.

iv) Cubing:
Most of the Indian machines are able to handle only brine-cured papaya.  Machine peeled papaya should be cubed after brine curing.  Hand peeled papaya can be straightway cubed as they are already brine cured.  Ensure before dicing that papaya pieces are free from peel and seeds.

v)    Sieving:
It is desirable to have pieces of uniform size. A two-deck sieve is used. The top deck removes oversize pieces, which are fed back to dicer for cutting.  The lower deck removes undersize pieces.
The undersize pieces besides spoiling the appearance of Tuti Fruitee, creates problem during draining of syrup. These should be discarded.  However, they can be accumulated in brine and later converted into Mini Tuti Fruitee that is liked by Ice-cream manufacturers.

vi)  Brining:
Normally 10% brine is used.  It is used 2-3 times and then discarded. Too much salt is waste of money and will also make debrinning more difficult.  Only if pieces are to be kept in brine for over a month or so brine strength should be over 14% and pH bellow 4.0 (After equilibrium). Addition of
0.5 to 1 Kilo KMS/ cubic meter of storage tank is benefitial. It will improve brightness.

Papaya should be brined in large plastic tank. For large quantity cement tank may be used.  They should be made of RCC with suitable waterproofing.  Brick tanks are not suitable, as brick is porous.  The tanks should be lined inside with acid alkali proof tiles or with Mandana Stones, which are resistant to salt and are economical.  Care should be taken while fixing tiles/stones.  Normally a little cement is used to fix them with walls, leaving lot of empty space behind tiles/stones.  Brine gradually seeps through joints behind the tiles and eats away into cement, making the tanks leak after sometime.  So sufficient cement, with little extra water than normal, is put on the tank surface and tiles/stone is pressed against this, making the cement ooze out of stone joints, thus ensuring that there is no gap behind for a the brine to enter. Joints are coated with acid alkali proof epoxy paint, further making the tank leak proof. The tanks should be constructed over ground level and an outlet should be in the bottom of tank to drain out brine and also help in cleaning of tank. 

vii) 2nd brining:
It is desirable to brine cubes at least for 5 – 7 days before processing them into Tuti Fruitee.
For storing cubes of papaya, for a short period 100 L wide mouth HDPE carboys are ideal.  These are brought near the cubing machine filled and moved over to curing yard where they are filled with brine solution of desired strength.  These are kept for desired number of days, and then moved to the processing hall. These are easily moved either by rolling or on drum trolleys.

vii)   Blanching
The papaya cubes are washed with one or two changes of water to remove salt partially.  They are cooked for 15 to 40 minutes in boiling water to soften them, and then cooled with one or two changes of water.
Often alum is added @ 250 gms to 500 gms/100 Kilo pieces.  350 Gms is a common dose. Too much alum will cause astringent taste.
Blanching time will vary. We can try 30 minutes and then as per result time can be decided. Pieces should become soft, but should not crush under mild pressure. The exact time well vary and with experience, it will be determined.
The water is drained by putting blanched cubes on any perforated surface or in Bamboo basket.  They should not be unnecessarily pressed to remove extra water.  Pieces should not taste saltish after completion of the above process. Centrifuging can be tried.

ix) Sugaring:
Mix part of sugar with the blanched pieces and leave overnight Usually 70 Kilo of sugar is mixed with 100 Kilo of pieces.  This will draw out part of water from pieces and sugar will enter into cubes, raising the brix to 40-42, without use of any heat. Keep it covered so that it does not get contaminated by fly or otherwise. Of course, exact quantity of sugar will depend on the recipe

x) Cooking:
Next day whole mass is transferred to cooking pans and start cooking.  Add remaining sugar/syrup in it.  In case whole mass cannot be accommodated in the pan add syrup gradually as the concentration proceeds.

Citric acid is added 30 minutes before end point and other additives (preservative and color) 10 minutes later.  As already mentioned add these in solution form.  It is easier to measure and also ensures complete solubility and proper distribution in the batch.

The addition time of chemicals is very important.  Citric acid is added so that a part of sugar is inverted.  It is a time and temperature controlled process.  If added too late there may be insufficient inversion, and chances are that sugar will crystallize, making the appearance of Tuti Fruitee poor.  Sometimes the whole mass of Tuti Fruitee will be converted into one solid block, joined by the sugar crystals.  If added too early, over inversion of sugar will take place causing stickiness and darkening.

The batch size is so adjusted that whole lot should be ready in 50 to 75 minutes.  Over cooking, will darken the product by sugar caramalisation and under cooking will give it a raw taste and texture.

XI) The end point:

As it takes time to penetrate syrup inside pieces, brix of Tuti Fruitee is lower by 1 or 2 degree from that of syrup. So it is desirable to finish the cooking at syrup brix that is higher by 1-2 degree than desired, that is at 72 brix to get final 70 brix.

As explained the prism of referectometer should be dry and clean.  Even a very thin film of moisture on prism or a thin film of dried syrup from previous batch will cause major error in reading.  Take out small sample in shallow metal dish and cool it quickly within a couple of minutes to room temperature and then check its brix.

As double check, test with brix hydrometer too.  They are available in the range of 30-60 and 60-90.  Keep aside some syrup and let cool to room temperature.  Check with hydrometer and compare with refrectometer reading.  However as this is a slow process on line test is with refrectometer only.

xii)   Cooling and drying:

The syrup is drained on a perforated sheet.  The hot mass is transferred on a perforated sheet kept over a receptacle for syrup and drained for a couple of minutes.  It is then transferred over a cooling table for cooling and drying,

Cooling tables are usually made of 4’ x 8’ aluminum sheet, with ends raised a couple of inches.  They are kept inclined to one side to collect syrup that is still there.  Often fans/room coolers are used to facilitate cooling.  The Tuti Fruitee is spread over these tables in 2” thick layer and occasionally stirred.  They should cool and dry within 1-2 hours.

It is preferable to keep these tables in dry area that is fly proof.  Basket centrifuge working at low RPM can be used to dry Tuti Fruitee. It is better to use centrifuge with removable basket for hygienic purpose and ease of operation.


xiii) Filling:  The Tuti Fruitee is usually filled in polypropylene pouches of appropriate size as per market demand. 1 kilo is common pack, but other sizes are also packed.  The bags are sealed and placed into carton, which is again sealed.

On storage, Tuti Fruitee looses moisture, and weight.  While selecting packing material for long storage, this should be considered.

7) Special quality point:

i)                    Iron contact is not desirable. It darkens color.  It may come from machines, dirt, water and ingredients. So ensure that:
a)      Machines are having all contact parts free from Iron.  Stainless steel, wood, plastic, stone tiles are desirable.
b)      Fruits (especially after cutting), salt and other materials should not be exposed to dirt.
c)      All ingredients should be free from dirt and iron contamination.  Alum and salt is a good source of iron.
d)     Water should not be very hard, as its mineral may affect texture and color shade of Tuti Fruitee.
ii)                  Pieces should be properly cut, and check cut material frequently.  If they are having seeds, peels or off cut pieces, take corrective actions.  If pieces are not sharp cut, check blades.

iii)                Cooking and cooling should be properly done to avoid unnecessary carmalisation of sugar.

iv)                The premises should be maintained clean and free of flies.  Use bleaching powder and regularly use insecticide (Nuvan).  Prepared goods should not be unnecessarily exposed to atmosphere to minimize contamination from air, microorganism and insects.

8)             Costing:
It is based on present prices, However actual cost of material is to be considered at the time of calculation.
(A)        Papaya pieces in brine: Usual recovery of cubes from papaya is 50% to 60%.
Therefore, cost of 100-Kg papaya cubes is:
200 Kilo Raw Papaya  @ Rs. 2.50/kilo          =          500.00
          8 Kilo salt refined     @ Rs. 2.50/Kilo            =            20.00
                                   Total               =          520.00
Raw Material Cost of pieces/Kilo                   =          Rs. 5.20

Raw material Cost of Tuti Fruitee
Raw Material
Price/kg
70 brix
55 brix


Quantity
Value (Rs.)
Quantity
Value (Rs.)
Papaya Cubes
5.20
87 Kg
452.40
100 Kg
520.00
Sugar
16.00
72 Kg
1152.00
56 Kg
896.00
Colors
400.00
20 gms
8.00
20 gms
8.00
Sodium Benzoate
60.00
20 gms
1.20
100 gms
6.00
Citric Acid
80.00
100 gms
8.00
100 gms
8.00
Potash Alum
30.00
300 gms
9.00
350 gms
10.50
Total raw material cost


1630.60

1448.50
Labor


150.00

150.00
Fuel


200.00

150.00
Power etc.


 50.00

 50.00
Packing cost


200.00

200.00
Total cost


2230.60

1998.50

Say for a proper Tuti Fruitee it is aprox. 22/ Kilo and a low brix Tuti Fruitee it is 20/kilo
Of course, actual cost will have to be worked out at the time of production. The above is only as guideline

9. The machines:
The major machines are:

1.      Peelers: It should be made of S.S., and minimum 1 meter diameter.  However initially one can manage with hand peeling.
2.      Balance: A 300 Kilo platform balance is ideal.  Avery loose weight models are sturdy and economical
3.      Slicer and cuber: They may be separate or combined.
4.      Sieve: Helps in getting uniform sized pieces.
5.      Cooking: For small capacity, diesel bhatti and aluminum bhigona are good.  For large production, Boiler and S.S.pans are ideal.
6.      Cooling: Aluminum top tables are good.
7.      Lot of vessels are needed for storing of sugared cubes, syrups etc.
8.      Knives, ladles etc.
9.      Brining tank cemented or HDPE drums for storage of brined papaya.
10.  Filling tables, sealing machine, balances, carton strapping machines etc.


10. Quality Control

For checking Brix:      Refrectometer
                                    Brix Hydrometer, Measuring Cylinder 500 ml.,
                                    Aluminum dishes
                                    Surgical cotton and malmal clothe to dry refrectometer.
For brine strength        Baume Hydrometer, 0-20
                                    Measuring Cylinder 500 ml.  
pH                               Initially pH paper 2.5-4.5 range or pH meter
Balance                                   A balance of 1 kilo weight to check weigh packed material and for analysis                                    purpose.

                                    Stove, Bhigona, glass jars etc.

11. Conclusion :
Tuti Fruitee is a product that is simple to make.  Although it is a fruit preserve, but due to its small size and large surface its processing is faster than normal preserve like Petha, anwala etc. We have given a process which if adopted will make a good product in a simple way.

5.3.19