Health care medicine is a science that studies the influence of environment on human health, discusses its incidence law, and thus formulates effective preventive countermeasures and measures to protect and promote health. Below, I would like to share with you a model essay on health care medicine, hoping to help you!
Corn has been accompanied by human development and progress. It can be said that corn is the most important food crop in the world. According to incomplete statistics, China's annual corn output accounts for 22% of the world, ranking second in the world. The annual processing capacity of corn in China is maintained at more than 20 million tons. By reprocessing 6,543,800 tons of corn, about 700 tons of germ can be separated. It can be said that China's corn germ production is huge and abundant, and it is currently maintained at about 654.38+0.4 million tons.
It has been scientifically proved that corn is rich in nutrients, especially protein, fat, sugar, cellulose, inorganic salts, vitamins and advanced nutrients such as oleic acid, linoleic acid, lutein and glutathione. Compared with polished rice and refined flour, the cellulose content in corn is as high as 4~ 10 times. In addition, the content of other vitamins and protein is much higher than that of refined rice flour, so corn has rich and huge development potential and utilization value.
Nutritional and health functions of 1 corn germ oil
Corn oil is an oil extracted from corn germ through technical processing, also known as corn oil and corn germ oil. Corn germ is a good raw material for oil production. Corn germ contains a lot of fat, and the content is kept at 17%~45%. Corn germ oil is a kind of high-quality edible vegetable oil, which is widely eaten in developed countries such as the West, Europe and America. According to research, corn germ oil has been eaten in Europe and America for more than 100 years, but in China, consumers still don't agree with it, and people who know it know it.
1. 1 corn germ oil is rich in natural vitamin e.
As we all know, vitamin E is a natural antioxidant, which has a powerful function of repairing blood vessel wall. If used for a long time, it can effectively prevent atherosclerosis and coronary heart disease, prolong life and slow down human aging. According to the determination, the content of vitamin E in crude oil of corn germ oil is as high as 0.26%~0.47%, which is obviously higher than other vegetable oils. Especially after fine refinement, it can still be kept at about 0. 1%. If vitamin E is taken together with selenium, it plays an important role in maintaining the integrity of cell membrane, skeletal muscle, cardiac muscle, smooth muscle and cardiovascular system. If vitamin E works with unsaturated fatty acids, it can greatly reduce the blood cholesterol content, clean the blood vessel wall and prevent deposition. It can be said that clinical experiments have proved that natural vitamin E has more medicinal and health care functions than synthetic vitamin E, and its physiological activity is particularly strong.
1.2 corn germ oil is rich in unsaturated fatty acids.
Corn oil is easy to digest and absorb. It can be said that this oil can be absorbed by the human body for about 97% at a time, and it has two functions of eating and health care. The processed corn oil is delicious and of high quality on people's dining tables. The test data show that this vegetable oil contains 86% unsaturated fatty acids, oleic acid, linoleic acid and α -linolenic acid, among which linoleic acid is the most abundant, accounting for 56%. This kind of advanced linoleic acid is an essential substance for human body, which can only be formed by synthesis, and the human body itself cannot form it. After its action, it can effectively reduce cholesterol.
Scientific research shows that the auxiliary effect of corn germ oil on reducing blood lipid is very significant. Through the regular experiment of two meals cooked with corn germ oil, the results showed that serum TC increased rapidly, which was 65438 03.78% lower than the original, while serum TG decreased by 37.69%. The test results are extremely effective, and the total effective rate is about 64.3%. Other tests were performed on the subjects. The result is even more surprising. The subjects' qualities in spirit, sleep, diet, defecation, blood pressure, etc. have been significantly improved, and other additional clinical indicators are normal, which have no influence on the balance of the human body, and these indicators tend to be normal.
1.3 corn germ oil is rich in phytosterols and phospholipids.
Scientists call phytosterol "the key to life", and the content of phytosterol in corn germ exceeds all foods, reaching 633mg(/ 100g). This phytosterol is a functional essential substance that people don't understand. The absorption capacity of human body is not high, the absorption mode is consistent with cholesterol, and the absorption rate is less than 1/5 of cholesterol. Sergey and others have done a lot of experiments outside human body through isothermal titration and gas chromatography science and technology, and obtained important experimental results. Free β -sitosterol and sitostanol can reduce the cholesterol concentration in the dietary mixed particle model through dynamic competition mechanism, and have been developed to produce drugs useful to human body. There are many clinical drugs with phytosterol as the main component, which are mostly used to treat cardiovascular diseases such as atherosclerosis, hyperlipidemia, coronary heart disease, chest tightness, palpitation and so on. And the effect is quite obvious, which greatly improves the body's autoimmune ability and strengthens the body's repair ability. Corn germ contains high contents of B vitamins, calcium, iron, zinc and other mineral elements. The food made from it has important nutrition for human body and is a pure natural health care product.
2 Extraction of corn germ oil
2. The purpose and significance of1corn germ oil extraction
Corn germ oil is rich in nutrition, and its unsaturated fatty acids, vitamin E and phytosterols are much higher than other crops. It is popular and edible all over the world, especially in developed countries such as Europe, America and the West. People's lifestyles are constantly changing and their health awareness is constantly increasing. Corn germ oil has penetrated into people's lives and is internationally recognized as the healthiest edible oil.
2.2 Extraction method of corn germ oil
2.2. 1 pressing method
Squeezing method is mainly a physical method, which produces oil through high-strength extrusion with strong mechanical pressure. This method is a very primitive way and is widely used in many oil plants. Through careful screening, oil impurities are removed to ensure that the materials are clean. The main function of rolling blank is to form uniform distribution. When the oil is evaporated, the heating energy is balanced and the water distribution is reasonable. Finally, the purpose of completely destroying plant tissues can be achieved, and more oil can be squeezed out. Steaming and baking can effectively change the cohesiveness of protein, enhance the fluidity of oil, and continuously flow out from the green body.
2.2.2 Water replacement method
The method of changing water is a way used in small workshops. The quality of the produced oil is guaranteed, and the original purity and fragrance are maintained. The production method is to use water instead of oil. When it is made, the oil is completely baked and ground, enough boiling water is injected, and the oil is separated by mechanical stirring and oscillation, using the hydrophilic and hydrophobic characteristics of protein.
2.2.3 aqueous enzymatic method
The results show that the oil prepared by aqueous enzymatic method has high oxidation stability, and the peroxide value of phospholipids is lower than that of pressed oil. Aqueous enzymatic method is a new method rising in recent years. By grinding and processing oil, uniform particle size is formed. At this time, a certain amount of enzyme solution is injected to break the cell wall and degrade and separate lignin, cellulose and hemicellulose wrapped in oil. Compared with the traditional method, this method is easier to produce oil, with higher yield, good quality, no degumming, simple enzymolysis, less energy consumption and more protein. Therefore, the aqueous enzymatic extraction of oil has high oil yield and good stability.
3 Development prospect of corn germ oil
The corn yield in China is sufficient, and the corn oil raw material has been made in China, so the market risk is small. Compared with the international market, corn oil raw materials have no genetically modified ingredients. China needs to continuously increase the development of corn processing and by-products, especially corn germ oil, which can bring people a healthy living guarantee, greatly promote the utilization of domestic resources, social development and improve people's health awareness. The development prospect of corn germ oil is more and more optimistic and has a good market prospect.
References:
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[5] Xin Li. Extraction of corn germ oil by aqueous enzymatic method and recovery of protein by nanofiltration [J]. Research and discussion on food industry science and technology, 2002( 12).
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