Many attempts have been made to produce an insect repellent from Lanzones peelings. Lanzones peelings are the main ingredient for our study. The group chose it because according to research, the skin of lanzones has a certain compound that can repel mosquitos. When burned, it also produces an aromatic smell which is soothing and relaxing. This ingredient can also be burned easily. It is perfect for the production of katol, a coil of incense used to kill and repel mosquitoes here in the Philippines. It is more effective when lanzones peelings are dried first under the sun so it will be more combustible. When combined with starch, the group will be able to produce a mosquito coil quite similar to those on the market. The only difference is that our group will be making an insect repellent in the form of a candle. Lansium domesticum, also known as langsat, buahluku or lanzones, is a species of tree in the Mahogany family.
The plant, which originates from western Southeast Asia, bears edible fruit. It is the provincial flower for the Indonesian province of South Sumatra. The tree is average sized, reaching 30 meters (98 ft) in height and 75 centimeters (30 in) in diameter. Seedling trees 30 years old planted at 8 x 8 meter spacing can have a height of 10 meters and diameter of 25 cm. The trunk grows in an irregular manner, with its buttress roots showing above ground. The tree’s bark is a greyish color, with light and dark spots. Its resin is thick and milk colored. An insect repellent is a substance applied to skin, clothing, or other surfaces which discourages insects (and arthropods in general) from landing or climbing on that surface. There are also insect repellent products available based on sound productions, particularly ultrasound (inaudibly high frequency sounds). These electronic devices have been shown to have no effect as a mosquito repellent by studies done by the EPA and many universities. Insect repellents help prevent and control the outbreak of insect-borne diseases such as malaria, Lyme disease, dengue fever, bubonic plague, and West Nile fever.
Pest animals commonly serving as vectors for disease include the insects: flea, fly, and mosquito; and the arachnid tick. A candle is a solid block of wax with an embedded wick which is ignited to provide light, and sometimes heat, and historically was used as a method of keeping time. For a candle to burn, a heat source (commonly a naked flame) is used to light the candles’ wick, which melts and vaporizes a small amount of fuel, the wax. Once vaporized, the fuel combines with oxygen in the atmosphere to form aflame. This flame provides sufficient heat to keep the candle burning via a self-sustaining chain of events: the heat of the flame melts the top of the mass of solid fuel; the liquefied fuel then moves upward through the wick via capillary action; the liquefied fuel finally vaporizes to burn within the candle’s flame.
B. RELATED STUDIES
According to www.prezi.com, the peelings of lanzones have this aromatic smell that drives away and kills mosquito. The smoke of this repellent for the smoke is a good agent in making mosquito repellent. This may be a cheap alternative to de-fogging and fumigation against dengue-carrying, diurnal mosquitoes and malaria-carrying, nocturnal anopheles. Another alternative would be ipil ipil. Nutritionists say the fruit — which is sold from a low of P40 to a high of P80 per half kilo — is rich in vitamin A, which helps form and maintain healthy skin, teeth, skeletal and soft tissue, mucus membranes, and skin. Vitamin A, which promotes good vision, especially in low light, is also known as retinol or carotenoids, and is a fat soluble vitamin that plays a fundamental role in maintaining healthy skin, teeth, soft and skeletal tissue and mucous membranes. Apart from vitamin A, nutritionists say lanzones contains carotene, a powerful oxidant which plays a basic role in protecting cells from radicals associated with many medical disorders. Lanzones, according to the “Encyclopedia of Natural Medicine,” can be burnt with the dried peel from this fruit to drive away mosquitoes. The bark from the tree that grows the fruit can function as an astringent to treat diarrhea.
Powder from the bark can also help to treat scorpion stings. The lanzones fruit can serve as a febrifuge, meaning it lowers a person’s body temperature. Others in health care services say lanzones contains riboflavin and thiamine, vitamin B-2 and B-1 respectively. Riboflavin supports body growth and red blood cell production. Additionally, riboflavin helps the body to release energy from carbohydrates. The body uses thiamine, which breaks down sugars, to help treat several nerve and heart conditions. Based on ww.bar.gov.ph Lanzones (Lansium domesticum Corr.) is highly complex and varied fruit. In the Philippines, the term Lanzones covers all type or groups belonging to the species Lansium such as Paete, Camiguin, Jolo, Duku and Longkong. Lanzones is generally grown for fruits. The fruits contains 68% edible portion consisting of, per 100 gram of edible portion, water, 84 g; carbohydrates with the little of protein and fat, 14.2 g; fiber, 0.8 g; ash, 0.6 g; Calcium (Ca), 19 mg; Potassium (K), 275 mg. It also contains vitamin B1, B2 and a little of vitamin C. The sturdy wood is also used for house posts, tool handles and furnitures. The dried peels are burned to drive the mosquitoes away. The bark is used against dysentery and malaria.