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Dingsheng Machine design and develop coconut oil refinery units

Date:Mar 9th, 2022
Dingsheng Machine are determined to provide coconut oil refinery plants to process the crude coconut oil into refined coconut oil. coconut oil refining can be done easily on our small scale refinery plants. We engaged in the production of coconut products can benefit much from our coconut oil refining machinery.

Coconut oil (or coconut butter) is an edible oil derived from the wick, meat, and milk of the coconut palm fruit. Coconut oil is a white solid fat; in warmer climates during the summer months it is a clear thin liquid oil, melting at warmer room temperatures of around 25 °C (77 °F). Unrefined varieties have a distinct coconut aroma. It is used as a food oil, and in industrial applications for cosmetics and detergent production.

Refined coconut oil also known as the RBD Coconut Oil, which refers to the oil that has been refined, bleached, and deodorized. The oil is derived from dried coconut meat known as copra. Actually, the oil that is expelled directly from copra is not fit for consumption, since it may contain dust particles, insect remains, spawns, microbes, fungal spores and many other such substances that may be harmful for health.

Refined Coconut Oil is the most easily available, most sold, and most consumed form of coconut oil. In fact, nearly all the coconut oil that comes packed in bottles, sachets and bigger packs in the market is refined coconut oil.

The refining process for coconut oil is usually used to remove undesired components to improve coconut oil quality. In the present study, crude coconut oil (CCO) was refined in four stages: conventional degumming, neutralization, bleaching, and deodorization.

Coconut oil can be extracted through a wet or dry process.
Wet process
The all-wet process uses coconut milk extracted from raw coconut rather than dried copra. The proteins in the coconut milk create an emulsion of oil and water. The more problematic step is breaking up the emulsion to recover the oil. This used to be done by prolonged boiling, but this produces a discolored oil and is not economical. Modern techniques use centrifuges and pre-treatments including cold, heat, acids, salts, enzymes, electrolysis, shock waves, steam distillation, or some combination thereof. Despite numerous variations and technologies, wet processing is less viable than dry processing due to a 10–15% lower yield, even taking into account the losses due to spoilage and pests with dry processing. Wet processes also require investment of equipment and energy, incurring high capital and operating costs.

Dry process
Dry processing requires that the meat be extracted from the coconut shell and dried using fire, sunlight, or kilns to create copra. The copra is pressed or dissolved with solvents, producing the coconut oil and a high-protein, high-fiber mash. The mash is of poor quality for human consumption and is instead fed to ruminants; there is no process to extract protein from the mash.

Conventional coconut oil processors use hexane as a solvent to extract up to 10% more oil than produced with just rotary mills and expellers. They then refine the oil to remove certain free fatty acids to reduce susceptibility to rancidification. Other processes to increase shelf life include using copra with a moisture content below 6%, keeping the moisture content of the oil below 0.2%, heating the oil to 130–150 °C (266–302 °F) and adding salt or citric acid.

Virgin coconut oil (VCO) can be produced from fresh coconut milk, meat, or residue. Producing it from the fresh meat involves either wet-milling or drying the residue, and using a screw press to extract the oil. VCO can also be extracted from fresh meat by grating and drying it to a moisture content of 10–12%, then using a manual press to extract the oil. Producing it from coconut milk involves grating the coconut and mixing it with water, then squeezing out the oil. The milk can also be fermented for 36–48 hours, the oil removed, and the cream heated to remove any remaining oil. A third option involves using a centrifuge to separate the oil from the other liquids. Coconut oil can also be extracted from the dry residue left over from the production of coconut milk.

Refined, bleached, and deodorized (RBD) oil is usually made from copra and dried coconut kernel, which is pressed in a heated hydraulic press to extract the oil. This yields practically all the oil present, amounting to more than 60% of the dry weight of the coconut. This crude coconut oil is not suitable for consumption because it contains contaminants and must be refined with further heating and filtering.

Fractionated coconut oil provides fractions of the whole oil so that its different fatty acids can be separated for specific uses. Lauric acid, a 12-carbon chain fatty acid, is often removed because of its high value for industrial and medical purposes.The fractionation of coconut oil can also be used to isolate caprylic acid and capric acid, which are medium-chain triglycerides, as these are used for medical applications, special diets and cosmetics, sometimes also being used as a carrier oil for fragrances.

Dingsheng Machine provides complete coconut oil processing solution, coconut oil virgin process, wet and dry extraction process, refining process, hydrogenation process and fractionation process, continuous and fully automated process, helps you increase capacity and reduce the operating costs. If you are interested in our coconut oil extraction equipment, please contact us soon.

For more information please contact:
Justin (Sales Manager)
Email:company@dingmachinery.com
Whatsapp: +86-137 0392 6330



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