Sulphurless sugar concepts in sugar industry | Sugar Technology

Sulphurless sugar production benefits and limitation |Specification

Sulphurless sugar meaning :

The Sugar not having sedimants and traces of sulphur less than 5ppm , and its remaining parameters nearly matches to pantation white sugar then it is called sulphurless sugar. The sulphurless sugar quality nearly reached the refined sugar.

Sulphurless sugar vs normal sugar

Plantation white sugar is produced by following double sulphitation method so its sulphur content varies in between 20-70 ppm or sometimes more.  In sulphur less sugar process the double sulphitation for sugar production shall be replaced with defecation followed by melt clarification /melt carbonation and recrystalization method.

Sulphurless sugar production benefits and limitation |Specification

Major steps in production of Plantation white sugar

a) Juice sulphitation followed by syrup sulphitation.

b) By using the sulphured syrup followed direct crystallisation process.

The following changes are to be made in the plantation white sugar process to produce sulphurless/refined sugar.

a) Change in juice clarification process from sulphitation to defecation.

b) Production of high quality raw sugar by using crystalization method in place of plantation white sugar.

c) Again the raw sugar melt it and clarifications of raw sugar melt by phosflotation / carbonation process and then followed re-crystallisation for production of sulphurless sugar.

d) Further decolourisation of clarified melt by IER, PAC and GAC and re-crystallisation for production of refined sugar.

General Specification for Sulphurless Sugar :

Description Unit Sulphurless Sugar
Polarization % ≥ 99.80
Colour IU max < 60
Moisture % max 0.03
Ash % max 0.04
R.S. % max 0.04
SO2 ppm <5
Turbidity Abs. < 40
Beverage Floc Negative
Sediment ppm <10

Sulphurless sugar benefits

The following major advantages of Sulphur less sugar production process over double sulphitation plantation white sugar production process.

Better quality, sulphur free sugar for human consumption.

a) The keeping quality of sugar produced by Sulphur less sugar process is much higher than sugar produced by sulphitation process.

b) As the use of highly toxic SO2 is eliminated in processing of Sulphur less sugar, the corrosion levels are negligible thus drastically improving the life of specific equipment under operation, its piping and also surrounding equipment, roof truss, plant support structure as well as there is no emission of SO2 gases since the c) Sulphur burner station is totally eliminated. The maintenance cost for such corrosion related rectifications is totally saved.

d) Removal of fine bagacillo due to flotation process resulting in lower insoluble matter in sugar.

e) Better quality control in respect of colour as variation in clear juice or low grade seed/sugar colour are not affecting directly on finished product.

f) Inversion loss can be minimized due all materials maintained nearly neutral pH. It will effect the rise in recovery.

Limitations of Sulphurless sugar

a) When compare to Plantation white sugar process, Energy consumption will be increased in interns of steam and electrical power. Approximately the steam % cane will be increased 5 to 6% &  power consumption will be increased 5KW/ton of cane

b) Viscosity increased for end products of “C” massecuite and its molasses due to number of boilings.

c) The complexity of process  increased in sulphurless sugar production when compare to white sugar process.

Some Related Articles

Refined sugar making process | Refined Sugar Manufacturing Process 

Jaggery Making Process from Sugar Cane | Gur Manufacturing | How to Make Jaggery (Organic and Commercial) from sugar cane

Raw Sugar Making Process | Know About Raw Sugar Manufacturing Process

Liquid Sugar Manufacturing Process from sugar cane | Liquid Sucrose

Brown Sugar manufacturing process | Specifications of brown sugar | How to make brown sugar or soft sugar

Specialty sugar products Like Cube sugar | Candy sugar | Fondant sugars

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Post Author: siva alluri

The aim of this Blog "sugarprocesstech" is Providing basic to advance knowledge in sugar process industry and providing maximum calculation regarding capacity and equipment design online calculators .

4 thoughts on “Sulphurless sugar concepts in sugar industry | Sugar Technology

    Ramesh Chand Agarwal

    (January 13, 2018 - 5:01 am)

    Appreciable work is being done, very knowledgeable platform for sugar technologist.


    (March 22, 2018 - 6:00 am)

    know about process to make sulphur free from available sugar in market .

    The Sugar Factory | Atharvan Life

    (September 29, 2020 - 8:29 pm)

    […] preparation. Read more.[2] Cooling and moulding of jaggery. Read more. [3] Sulphur–less sugar! Read more. [4] Sugar refining. Read more. [5] Brown vs White-sugar. Read more. Disclaimer: The exact process […]

    SBGROUP Nepal

    (March 12, 2021 - 3:59 am)

    Thank you so much for such a lovely article with informative content. Reading your article made me realize the benefits of cutting of the sugar. Hope to see more of a similar article.

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