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Cai Mingfa, an assistant professor in the Department of Chemistry, Hong Kong, China, recently invented a “tomato skin biosensor†to test the blood sugar (glucose) content in the blood of diabetic patients. The error of testing blood sugar is within 5%, the cost is cheap, and each time the investment is only 1 yuan, a piece of tomato skin can be reused for half a year, which is economical.
According to Cai Mingfa, the scientific basis for all kinds of blood glucose meters that can be purchased at present is mainly based on chemical reactions, such as the sensitization effect or the principle of molecular current, but no matter which kind of principle is used, the instrument will have errors, sometimes up to 10 %, and this method of detecting the condition by artificial instrument is not environmentally friendly, because the test paper after each test is thrown away, but the natural matter such as tomato skin is used as the test paper, the substance is easily decomposed, and the cost is also cheaper. Cai Mingfa also said that the academic community has long used biosensors to detect various diseases, that is, using biological elements (natural plants, etc.) and physical and chemical detection elements (adding chemical elements) to combine the analytes. Detection. The Department of Chemistry of the University of Hong Kong also began testing different plants and foods in 2000 to find suitable biosensors for testing glucose. After a series of tests on egg whites and various types of plants, the researchers found that tomato skin has better permeability and faster response to contact. In 2007, the University of Sichuan and the University of Sichuan cooperated to formally study the tomato skin biosensor.
Diabetes is known as a modern civilization. Is a group of common metabolic endocrine diseases, divided into primary and secondary. The typical symptoms are "three more and one less", that is, polydipsia, polyuria, and more food and weight loss. Shanghai Medical Device Industry Association