Tuesday, 9 August 2016

Produce Research

Coconut Oil
Coconut oil, or copra oil, is an edible oil extracted from the kernel or meat of mature coconuts harvested from the coconut palm (Cocos nucifera). It has various applications. Because of its high saturated fat content, it is slow to oxidize and, thus, resistant to rancidification, lasting up to six months at 24 °C (75 °F) without spoiling.

Dry Process: Dry processing requires that the meat be extracted from the 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. A portion of the oil extracted from copra is lost to the process of extraction.

Wet Process: The all-wet process uses raw coconut rather than dried copra, and the protein in the coconut creates 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, or some combination. Despite numerous variations and technologies, wet processing is less viable than dry processing due to a 10–15% lower yield, even compared to 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.

Personal uses: Homemade coconut oil Coconut oil is as effective and safe as mineral oil when used as a moisturizer for mild to moderate xerosis (dry skin) and was shown in one study to reduce protein loss when used in hair.
Coconut oil is an important base ingredient for the manufacture of soap. Soap made with coconut oil tends to be hard, though it retains more water than soap made with other oils and therefore increases manufacturer yields. It is more soluble in hard water and salt water than other soaps allowing it to lather more easily. A basic coconut oil soap is clear when melted and a bright white when hardened.

Cocoa Butter
Cocoa butter, also called theobroma oil, is a pale-yellow, edible vegetable fat extracted from the cocoa bean. It is used to make chocolate, as well as some ointments, toiletries, and pharmaceuticals. Cocoa butter has a cocoa flavor and aroma. Its best known attribute is its melting point just below human body temperature. It has a storage life of two to five years.

Process:
Cocoa butter is obtained from whole cocoa beans, which are fermented, roasted, and then separated from their hulls. About 54–58% of the residue is cocoa butter. Chocolate liquor is pressed to separate the cocoa butter from the cocoa solids. Cocoa butter is sometimes deodorized to remove strong or undesirable tastes.

Personal Uses: The velvety texture, pleasant fragrance and emollient properties of cocoa butter have made it a popular ingredient in products for the skin, such as soaps and lotions. The moisturizing abilities of cocoa butter are frequently recommended for prevention of stretch marks in pregnant women, treatment of chapped or burned skin and lips, and as a daily moisturizer to prevent dry, itchy skin. Cocoa butter's moisturizing properties are also said to be effective for treating mouth sores. People from some countries use cocoa butter for shaving purposes.

Shea Butter:
Shea butter is an off-white or ivory-colored fat extracted from the nut of the African shea tree (Vitellaria paradoxa). Shea butter is a fat derived mainly from stearic acid and oleic acid. It is widely used in cosmetics as a moisturizer, salve or lotion. Shea butter is edible and is used in food preparation in Africa. Occasionally, the chocolate industry uses shea butter mixed with other oils as a substitute for cocoa butter, although the taste is noticeably different. - [Cannot be made from Bougainville produce.]

Sugar Cane + Raw Sugar:
Sugarcane is a perennial grass in the family Poaceae. It is cultivated in tropical and sub-tropical regions for the sucrose that is found in its stems. The crop is harvested mechanically or by hand, chopped into lengths and conveyed rapidly to the processing plant. Here, it is either milled and the juice extracted with water or extracted by diffusion. The juice is then clarified with lime and heated to kill enzymes. The resulting thin syrup is concentrated in a series of evaporators, after which further water is removed by evaporation in vacuum containers. The resulting supersaturated solution is seeded with sugar crystals and the sugar crystallizes out and is separated from the fluid and dried. Molasses is a by-product of the process and the fiber from the stems, known as bagasse, is burned to provide energy for the sugar extraction process. The crystals of raw sugar have a sticky brown coating and either can be used as they are or can be bleached by sulfur dioxide or can be treated in a carbonatation process to produce a whiter product. About 2,500 litres (660 US gal) of irrigation water is needed for every one kilogram of sugar produced.

Cocoa Powder: 
The dry powder made by grinding cocoa seeds and removing the cocoa butter from the dark, bitter cocoa solids. It can be separated into cocoa powder and cocoa butter using a hydraulic press or the Broma process. This process produces around 50% cocoa butter and 50% cocoa powder. The Broma process consists of hanging bags of roasted cocoa beans in a very warm room and allowing the cocoa butter, which melts at slightly above room temperature, to melt, drip off the beans, and be collected. After the Broma process is completed, the remaining dry cocoa beans are usually ground into cocoa powder.

We were interested to know what could be made in Bougainville and what we would have to make here. Whether we would have to import just the natural produce or we could import the ready made ingredients. We'll have to contact the volunteers of VSA and find out if any of these products are already being made and the quality of the product in respect to health and safety standards.

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