Soybeans (also known as soy), leguminous, known as edamame when immature. It contains approximately 40% protein (complete with essential amino acids), 21% fat (which contains abundant essential fatty acids), and 34% carbohydrates. It also contains various nutrients that the body needs, such as lecithin and vitamins. E, various minerals, isoflavones, soy fiber and Other special components. These components have been reported by many experts to learn that it has a variety of unique effects on health. Therefore, soy is indeed a treasure for low-priced and nutritious resources.
Soybeans and Health
Many biochemical studies have pointed out that soya beans contain high levels of Glycine, Arginine, omega-3 and omega-6 polyunsaturated fatty acids (alpha-linolenic acid, linolenic acid). ), Soybean fiber, lecithin, soybean saponin, soybean sterols, and isoflavones are very helpful for human health.
Here are some points for health:
Has excellent efficacy in lowering serum cholesterol and cardiovascular disease, James Kentridge University. Prof. James Anderson, based on his 1995 study and his eight research reports in recent years, have combined to point out that the daily intake of 25 grams of soy protein can lower the level of LDL cholesterol in the blood. %. Professor Anderson also said that this effect is mainly due to isoflavones (IsoflAVONes) in soybeans. In addition, the study found that 60-mg isoflavone supplements for men aged 44-55 years a day can improve heart rate and diastolic blood pressure, so soy may also have beneficial effects on blood pressure.
According to the US Food and Drug Administration (FDA)'s health claims for soy bean ingredients in 1999, daily intake of isoflavones is at least 1.3g, and diets with low saturated fat and low cholesterol can reduce the risk of coronary cardiovascular disease. . In addition, the plant fibers in soybeans are also considered to help reduce the risk of cardiovascular disease and cancer, and they are allowed to label their efficacy in foods.
Sanches A. (Med. Hypoth, 1991) pointed out that soybeans have a high content of two amino acids (glycine Glycine and Arginine), which can lower blood insulin and make the liver produce less cholesterol, which helps reduce The occurrence of heart disease. So we can see that soybeans are "protecting heart food."
Fight against cancer
In general, legumes such as soybeans are rich in isoflavones (containing 12 structurally different isoflavones), and Genistein is the main isoflavone contained in soybeans. Genistein not only inhibits the activity of carcinogenic enzymes, but also inhibits the growth of cancer cells, and it can convert cancer cells into normal cells. Therefore, Genistein is a powerful anti-cancer substance. Research by the University of Birmingham, Ala., researchers and Dr. Coral Lamartuniere have found that Genistein can inhibit breast cancer and reduce the number of prostate tumors (male must take 2 soy foods per day to obtain about 15 grams of soybean isoflavones). However, American cancer experts believe that soy isoflavones are excellent anti-cancer agents for innovation. You don't have to buy this anti-cancer agent as long as you eat soy or soy foods.
Natural soy bean Trypsin inhibitor has long been considered as an anti-nutritional factor. It affects the absorption of protein, but it is destroyed by heat treatment and can denature the trypsin inhibitor. Or reduce activity (but still some residue in food). However, the National Cancer Institute of the United States published in 1987: It is believed that protein inhibitors can inhibit breast cancer, skin cancer, and bladder cancer because they can inhibit certain activities that alter specific genetic genes. In addition, it can also resist radiation energy and free radicals, strengthen the immune system, and protect DNA from being damaged, showing the potential to prevent various chronic diseases.
In addition, according to the literature, soybeans contain suitable selenium (0.14 to 0.29 μg/g soybean) and their antioxidant activity is 50 to 100 times that of vitamin E. This selenium-containing soy protein can reduce organic peroxides and inhibit the oxidation of cells to combat aging and cancer.
Eliminate or alleviate women's menopausal disorders and osteoporosis
Osteoporosis has gradually become a topic of concern to all, and it is related to the aging of average life expectancy, especially for women after menopause. Because of the deterioration of the function of the ovaries, the secretion of estrogen is reduced, so that the calcium is easily lost and its bone density is reduced. Recently, clinical trials at home and abroad have pointed out that soy isoflavones can effectively improve women's menopausal syndrome, such as hot flushes, night sweats, palpitations, insomnia, and depressed moods. Scientific research also pointed out that the intake of 60 grams of soy protein (about 135 mg of isoflavones) per day for four consecutive weeks can reduce the sensation of dry heat by 33%, and it can be reduced by 45% for 12 consecutive weeks.
In order to maintain health, the balance of hormones is a key and important factor. Excessive or too few hormones are not conducive to human health. For example, estrogen causes excessive amounts of the estrogen to cause breast cancer. Conversely, if the amount thereof is too small, calcium is lost and osteoporosis is caused. The isoflavones contained in soya bean have the function of regulating the action of estrogen. The mechanism of action is: when there is less estrogen, isoflavones can act on receptors to supplement the estrogen effect, so as to prevent each other from adjusting estrogen balance. Health-friendly operation.
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