Studying Amylose Content in Rice

Ball et al. (1998) studies, the amylose content in rice varies between 15 and 35%. According to the amylose content (%), Juliano (1992) reported the rice line as waxy (0-2% amylose), very low (2-12% amylose), low (12-20% amylose, intermediate (20-25% amylose) and high (25-33% amylose) Low amylose rice varieties are usually soft, viscous and shiny, while high amylose varieties are dry and fluffy and during cooking It has also been studied that these percentages are mediated by the ratio of amylose to amylopectin in the starch granules.

Rice varieties are usually divided into long, medium and short grains. Grains with long grain rice (with high amylose content) tend to remain as they are after cooking, while medium grain rice (high amylopectin content) becomes more viscous. Medium rice is used not only for the sweet dishes of Italian risotto, but also for many Spanish rice such as Allonez Negre. Several long grain rice including high amylopectin (known as Thailand's glutinous rice) are usually steamed. Sushi uses sticky Central America; if it is viscous, the shape of rice is kept during molding. Medium grain rice is widely used in Japan, including delicious dishes, and usually served as a separate dish. Short grain rice is usually used for rice pudding

So what exactly are these machines, and those human counterparts? Americans like to cook rice strongly, nuclei can easily be separated; this occurs when rice is rich in protein and amylose or rice starch. When protein and amylose levels are low, Japanese prefer to make soft and sticky rice. "If you are trying to evaluate brown rice grown in the United States and your previous samples are all white rice in Japan, your reading will be very poor," Barton said. "But even with adding enough brown rice, the beige color will not confuse reading from other unrelated features such as amylopectin and amylose."

Starch is a long chain of glucose molecules. When it is linear, it is called amylose. When it branches it is amylopectin. Starch is the main ingredient of food such as rice, wheat, corn (corn), potatoes. The enzyme amylase contained in our saliva breaks down starch into maltose. Maltose is a disaccharide of glucose + glucose. Maltose is further broken down into individual glucose molecules by the small intestine, enzyme maltase. Carbohydrates and fats are passive energy storage or structural materials that form predominantly stable compounds, but proteins are vital machines for life. Their behavior changes with minimal change in conditions. Like starch, proteins are large polymers of small units called amino acids. Food contains about 20 kinds of amino acids, but about half of them can not be made with your body, you must eat it with food.