Gokul Refoils & Solvent Ltd.

Production Facilities & Processes  
GRSL has manufacturing facilities to produce edible oils two main production plants based in India. The Oils refined and processed are packed in controlled atmospheric conditions to keep the freshness intact and enables it reach customers in a stable state authorized for edible standards.
The Two plants namely at Sidhpur and Haldia operate in conjunction to give the optimum yield. The production standards are taken utmost care even right from the initial stage to the final stage.
Plant at Sidhpur site is engaged in the following manufacturing processes.
Crushing Refinery
Solvent Packing
Plant at Haldiya site is engaged in the following manufacturing processes.
Refinery Fractionation
Interesterification Packing
  Production Processes - An Insight
Oils are one of the main ingredients of the worlds mostly cooked recipes. They enhance the taste due to which the overall experience of the meal becomes memorable forever. Needless to say, these oils have become an integral part as a cooking medium in all the cuisines. However, any natural or manmade ingredient is infused with good and bad elements that are to be taken care in right level and right time. Oils too come with both the elements.
To get rid of unwanted ingredients and make it fit for human consumption, oils are treated in state of art ultra modern fully automatic plants into various intensified steps.
Seed Crushing
Seeds are cleaned to remove impurities like Stones, Broken Seeds, Husks etc., cleaned seed are charged into hoppers through chain conveyor.
Mustard seeds are crushed in Kolhus. In the Kolhu process, temperature is controlled to maintain the pungency of oil. Oil & Mustard cake are obtained from this process.
The oil cake so obtained is pressed in expellers to remove further oil.

Solvent Extraction

The Oil cakes obtained from expellers are cleaned to remove impurities like husk, stone particles etc, through pre cleaner and destoner which are further fed to the Cracker Breaker to make small pieces.
These cakes are then fed to the solvent extractor. In the solvent extractor food grade hexane is sprayed through the cake to extract the oil content (7 to 9%) out of the cake.
In case of Soya Bean, dehulled seeds are cracked and adjusted for moisture content and then subsequently rolled into flakes, expanded.
These flakes are then fed to the solvent extractor. In the solvent extractor food grade hexane is sprayed through the cake to extract the oil content (17 to18 %) out of the flakes.
This wet DOC is further fed to De solventiser Toaster to evaporate hexane particles and oil particles.
Output of the toaster section at bottom is De Oil Cake and is separately collected, conveyed and packed in Gunny Bag or PP bag.
Evaporated particles/ Miscella (mixture of oil and Hexane) is fed to distillation and recuperation section to depart oil and hexane.
This recovered hexane is recycled in the process.
Solvent extracted raw grade oil is required to go through degumming and refining to produce refined oil.
Crude oils having relatively high levels of phosphatides may be degummed prior to refining.
The process generally involves treating the crude oil with a limited amount of water to hydrate the phosphatides and make them separable by centrifugation.
The process of refining (sometimes referred to as "alkali refining") generally is performed on vegetable oils to reduce the free fatty acid content and to remove other gross impurities such as phosphatides, proteinaceous, and mucilaginous substances.
By far, the most important and widespread method of refining is the treatment of the fat or oil with an alkali solution. This results in a large reduction of free fatty acids through their conversion into water-soluble soaps.
After alkali refining, the fat or oil is water-washed to remove residual soap.
This oil is further bleached to remove color producing substances
Bleached oil is Deodorized, a vacuum steam distillation process, for the purpose of removing trace constituents that give rise to undesirable flavors, colors and odors in oil
Hydrogenation is a process by which hydrogen is added directly to points of unsaturation in the fatty acids.
In the process of hydrogenation, hydrogen gas is reacted with oil at elevated temperature and pressure in the presence of a catalyst.
The catalyst most widely used is nickel supported on an inert carrier which is removed from the fat after the hydrogenation processing is completed.
Hydrogenation process is generally used to manufacture Vanaspati
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