After the incident, the Health and Wellness Committee of Heilongjiang Province released the poisoning cause of the poisoning incident in Jidong County, Jixi City. A high concentration of rice fermentation acid was detected in corn flour and also in the gastric juice of patients. It was initially identified as a food poisoning incident caused by Pseudomonas cocoanum pollution and rice fermentation acid production. Professor Fan Zhihong from China Agricultural University introduced that the acid produced by the fermented rice is very resistant to high temperature, and the mortality rate is as high as 40% to 100% after being eaten in large quantities. Relatives of the poisoned people told reporters that relatives who received treatment in Mudanjiang died overnight, and the death toll in this incident has risen to 8.

What nutrition does human health need? The human body needs more than 20 kinds of nutrients to maintain growth, development and health. Protein, fat, sugar (carbohydrate), vitamins and inorganic salts (minerals) are five essential nutrients for human body, among which protein, fat and sugar provide heat energy for human body, while vitamins and inorganic salts do not provide heat energy, but they can regulate human physiological functions and are also essential nutrients for human body. These nutrients, on the one hand, are fuel for energy supply, on the other hand, are human buildings and materials. Although water is not in the nutrient composition list (some water is in the nutrient composition list), it is also very important for human health. In recent years, dietary fiber, as the sixth largest nutrient, has been listed as an essential nutrient for human body. The types of nutrients needed by people of different ages are basically the same, but the amount of nutrients needed depends on gender, weight, activity, health status, age and other factors.

First, the thermal energy mentioned in thermal nutrition is also called energy or heat. Thermal energy is usually expressed in kilocalories, which is short for calories. 1 calorie is the heat energy required for 1 ml of water to rise to 1℃. The international common unit of heat energy is Joule, and 1 calorie is equal to 4. 184 Joule. All physiological and physical activities of human body depend on the heat energy provided by food. There are three kinds of nutrients in food that can generate heat energy: sugar, protein and fat. 1g sugar, fat and protein produce 16.8, 37.6 and 16.7 kj of heat energy in human body respectively.

Sugar and fat are mainly used to provide heat energy. Sugar can be directly used by various tissues of human body, so it is also called "direct fuel". Fat can provide a lot of heat energy, so it is also called "high energy fuel". Obviously, fat is the most concentrated component in heat energy. The average absorption rates of sugar, fat and protein were 98%, 95% and 92% respectively. Under normal circumstances, 70% of the total heat energy of human body comes from sugar and 20% from fat. Protein only provides 65,438+00% heat energy.

Second, protein and protein are the foundation of all life. Its chemical composition is quite complicated. Besides carbon, hydrogen and oxygen, it also contains substances such as nitrogen, sulfur, phosphorus, iron and zinc, as well as nucleic acids, polysaccharides and lecithin. It is mainly used for the renewal and repair of human tissues. Protein in human body and food consists of more than 20 kinds of amino acids. Among them, 8 kinds of amino acids can't be synthesized by human body or the synthetic amount is not enough to meet human needs, so they must be obtained from food, so they are called essential amino acids.