IN 1872, Mexico sent a box of dahlia bulbs to Holland. From a box of dahlia bulbs are turned out just one bulb that had grown well, but it produces beautiful red flowers with pointed petals. Later, not only the beauty of the charm. Apparently dahlia "hoarding" a secret in recent years seized the attention of food experts around the world. Especially if not as a useful source of inulin.
Botany Dahlia (Dahlia pinnata Cav.) Is a plant that is easy to find almost all over the world. The naming of this plant following the name of Andreas Dahl, Swedish scientist who was instrumental in developing and popularizing these dahlias. Plants form a clump of dahlia tubers grown with roots at the base of the trunk. Dahlia plants can be developed in three ways: generative propagation by seed, vegetative propagation by cuttings, and vegetative propagation by tubers. In line with the development of seed technology, the current method has been developed through tissue culture propagation of dahlias.
Dahlia tuber-old plants harvested at least seven months after planting. Dahlia dahlia cactus species and large bulbous can produce more than 25 tons of fresh tubers per hectare. Countries that possess collections of most types of dahlias were Mexico and Guatemala. They have 12 to 20 kinds of dahlias, in which 6 of them have developed into an ornamental plant.
From one family of plants dahlia tubers can be produced as much as 2-5 kg, depending on the variety and fertility of these plants. Dahlia tuber roots contain 80 percent water and 20 percent solids. Solids composed by approximately 85 percent sugar-producing substances called inulin and berselulosa material.
Characteristic In fact, inulin is what causes the dahlia tubers taste "sweet". Inulin is a polymer of fructose-containing linear chains -2.1 and one terminal glucose unit at the edges with bonding -1.2. Molecular weight inulin varied between 3500-5500 g / mol. Thus, if the chain of a molecule hydrolyzed inulin, would produce fructose syrup with a little mixture of glucose. With these properties, dahlia tubers potentially produce fructose syrup which is produced from starchy materials through enzymatic or chemical hydrolysis processes.
Dahlia inulin can be isolated from the source (dahlia tubers) using the solvent ethanol, then dried and milled. Besides its usefulness for the production of fructose, inulin some publications mention other advantages, especially for health. Some recent research shows that the addition dahlia inulin in a number of foods to control weight as well as to treat hypoglycemic.
Other research results mentioned, dahlia inulin very effective to suppress appetite and is able to control glucose levels in the blood. For though the count ragawan body building, dahlia inulin can reduce muscle tissue resolution and can increase muscle mass. Dahlia inulin mentioned can also facilitate the metabolism of sugar in the process of glycolysis. In addition, dahlia inulin is able to provide energy in the long term (up to 10 hours), so it is suitable for those who consumed fast.
Extraction Inulin can be obtained by cooking a solution of dahlia tubers in water at a temperature of 80-90 degrees Celsius for 30 minutes. A number of research confirms that the method is widely used to obtain inulin is a dahlia tuber extraction method using boiling water or ethanol. During extraction, the cooking process aims to dissolve the inulin contained in the tubers. After the cold, grated tubers obtained filtrate was filtered through a dark brown.
Inulin can be precipitated by a mixture of ethanol with water. Screening results are measured in volume, then added alcohol 30 percent as much as 40 percent of the volume of filtrate. Filtrate which had dipresipitasi with alcohol is then stored at a temperature of 2 degrees Celsius for 18 hours. Inulin-ethanol mixture will form a white precipitate. To separate the sediment, which has dipresipitasi filtrate was centrifuged and cooled after previously left at room temperature for approximately two hours. The precipitate is white sentrifusi results indicate that the brown sludge contains a high inulin.
Inulin is extracted with the addition of active charcoal color is more white than inulin is not added activated charcoal. This is because at the time of bleaching all the color components such as tannins, carbonyl component which plays an important role in the browning reaction (browning) bound in the active charcoal, thus giving a color component in the solution although it is to be minimized. Now, dahlias do not just cast a spell because of its beauty. Apparently dahlia hoard potential benefit to human health. Dahlia, not just beautiful flowers, but also potent tuber
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