Golden rice, also known as "golden rice", is a genetically modified rice. Transgenic rice with golden yellow appearance can be obtained by transferring carotene invertase system into rice endosperm through transgenic technology, which is called "golden rice". Golden rice is rich in carotene, which can be converted into vitamin A in animals.
Development of golden rice is a kind of transgenic rice, which was developed by Syngenta. Because of its yellow color, rice varieties are also called "golden rice". The first generation of "golden rice" came out in 2000, using genes from daffodils, in which the carotene content is about per gram of rice16 μ g/g. The second generation of "golden rice" came out in 2005, which was cultivated by using the corresponding genes in corn. The carotene content of the second generation "golden rice" is 23 times that of the first generation, reaching 37 μ g/g.
How to choose rice
1. Look at the hardness of rice: the hardness of rice is mainly determined by the content of protein. The harder the rice is, the higher the protein content is. The higher the transparency. Generally, new rice is harder than old rice, low decimeter is harder than high decimeter, and late rice is harder than early rice.
2. Look at the yellowing of rice grains: The yellowing of rice grains is caused by chemical reactions of some nutrients in rice under certain conditions, or by microorganisms in rice grains. The smell and taste of these yellow grains are very poor, so be sure to observe the number of yellow grains in rice when purchasing. In addition, there are many "dead green" grains in rice grains, and the quality of rice is also poor.
3, look at the waist explosion: waist explosion is caused by the sudden heating of rice during the drying process. After sudden heat phenomenon, the internal and external contraction of rice grains is unbalanced. Fried rice tastes rotten and endogenous, and its nutritional value is reduced. Therefore, when selecting rice, we should carefully observe the surface of rice grains. If there are one or more transverse cracks on the rice grain, it means that it is popcorn.