Vitamin e chemical name

Today many of the second-generation highly cross-linked polyethylenes (HXLPE) use vitamin E (chemical name: α-tocopherol; see Fig. 19.1) as antioxidant to further enhance the longevity of the implant [1–3]. There are two main technologies how to add the vitamin E to the polyethylene: by infusion or by blending. Depending on the manufacturing and sterilisation process and the chosen level of cross-linking, the vitamin E will thus be subjected to different amounts of high energy irradiation. Keywords • Artificial Ageing • Ether Formation • High Energy Irradiation • Pure UHMWPE • Conventional UHMWPE These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves. • Lerf R, Zurbrügg D, Delfosse D. Use of vitamin E to protect cross-linked UHMWPE from oxidation. Biomaterials. 2010;31:3643–8. • Bracco P, Oral E. Vitamin E stabilised UHMWPE for total joint implants. Clin Orthop Relat Res. 2011;469:2286–93. • Oral E, Muratoglu OK. Vitamin E diffused, highly crosslinked UHMWPE: a review. Int Orthop. 2011;35:215e–23. • Al-Malaika S, Ashley H, Issenhuth S. The antioxidant role of α-tocopherol in polymers, I. The nature of transformation products of α-tocopherol formed during melt processing of LDPE. J Polym Sci A. 1994;32:3099–113. • Al-Malaika S. Perspectives in stabilisation of polyolefins. Adv Polym Sci. 2004;169:121–50. • Mallégol J, Carlsson DJ, Deschênes L. Antioxidant effectiveness of v...

Your body uses vitamin E for multiple purposes, including protecting you from oxidative stress and supporting your immune system. You can get vitamin E from certain foods and dietary supplements. Though vitamin E is often thought of as a single compound, it’s actually a group of eight fat-soluble compounds with powerful antioxidant effects ( Of these eight chemical forms, alpha-tocopherol best meets the dietary requirements of humans ( Vitamin E exists naturally in certain foods, including seeds, nuts, some vegetables, and some fortified products. You can also take it as a dietary supplement. It plays many roles in your body. It’s perhaps best known for its antioxidant effects, protecting your cells from oxidative damage by neutralizing harmful molecules called free radicals. In addition, it’s needed for proper immune function and cellular signaling ( That’s why it’s not surprising that research suggests taking This article covers 8 potential benefits of vitamin E. Because vitamin E acts as a powerful antioxidant in the body, studies have shown that supplementing with high doses of it can reduce markers of oxidative stress and boost antioxidant defenses in some populations ( For example, a 2018 study in 54 people with diabetic nephropathy — kidney damage caused by high blood sugar — found that supplementing with 800 IU of vitamin E per day for 12 weeks significantly increased levels of glutathione peroxidase (GPx) compared with a placebo ( GPx is a group of antioxidant enz...

Vitamins and minerals are micronutrients required by the body to carry out a range of normal functions. However, these micronutrients are not produced in our bodies and must be derived from the food we eat. Vitamins are organic substances that are generally classified as either fat soluble or water soluble. Fat-soluble vitamins ( Minerals are inorganic elements present in soil and water, which are absorbed by plants or consumed by animals. While you’re likely familiar with In the U.S., the National Academy of Medicine (formerly the Institute of Medicine) develops nutrient reference values called the Dietary Reference Intakes (DRIs) for vitamins and minerals. [1] These are intended as a guide for good nutrition and as a scientific basis for the development of food guidelines in both the U.S. and Canada. The DRIs are specific to age, gender, and life stages, and cover more than 40 nutrient substances. The guidelines are based on available reports of deficiency and toxicity of each nutrient. Learn more about vitamins and minerals and their recommended intakes in the table below. Recommended Daily Intake of Vitamins and Minerals for Adults Vitamin (Common Names) Recommended Dietary Allowance (RDA) or Daily Adequate Intake (AI)* Upper Limit Women Men Vitamin A (preformed = retinol; beta-carotene can be converted to Vitamin A) 700 micrograms (2,333 IU) 900 micrograms (3,000 IU) 3,000 micrograms (about 10,000 IU) Thiamin (vitamin B1) 1.1 milligrams 1.2 milligrams Not known 1.1 mi...

Vitamin E is a nutrient that's important to vision, reproduction, and the health of your blood, brain and skin. Vitamin E also has antioxidant properties. Antioxidants are substances that might protect your cells against the effects of free radicals — molecules produced when your body breaks down food or is exposed to tobacco smoke and radiation. Free radicals might play a role in heart disease, cancer and other diseases. If you take vitamin E for its antioxidant properties, keep in mind that the supplement might not offer the same benefits as naturally occurring antioxidants in food. Foods rich in vitamin E include canola oil, olive oil, margarine, almonds and peanuts. You can also get vitamin E from meats, dairy, leafy greens and fortified cereals. Vitamin E is also available as an oral supplement in capsules or drops. Vitamin E deficiency can cause nerve pain (neuropathy). The recommended daily amount of vitamin E for adults is 15 milligrams a day. Research on vitamin E use for specific conditions shows: • Alzheimer's disease. Some research has shown that high-dose vitamin E might delay the progression of Alzheimer's disease in people who have been diagnosed with mild to moderate Alzheimer's disease. Other studies haven't shown this benefit. Vitamin E supplements appear to have no effect on whether people with mild cognitive impairment progress to Alzheimer's disease. • Liver disease. Studies show that vitamin E might improve symptoms of nonalcoholic fatty liver disease...

Vitamins can be classified based on their solubility. Fat-soluble vitamins are most abundant in high fat foods and are much better absorbed into your bloodstream when you eat them with fat. Most vitamins are water-soluble, meaning they dissolve in water. In contrast, fat-soluble vitamins are similar to oil and do not dissolve in water. There are four fat-soluble vitamins in the human diet: • vitamin A • vitamin D • vitamin E • vitamin K This article provides a comprehensive overview of the fat-soluble vitamins that includes: • health benefits • functions • main dietary sources Vitamin A plays a key role in maintaining your Types Vitamin A is not a single compound. Rather, it is a group of fat-soluble compounds collectively known as retinoids. The most common dietary form of vitamin A is retinol. Other forms — retinal and retinoic acid — are found in the body, but absent or rare in foods. Vitamin A2 (3,4-dehydroretinal) is an alternative, less active form found in freshwater fish ( Summary The main dietary form of vitamin A is known as retinol. Role and function of vitamin A Vitamin A supports many critical aspects of your body function, including: • Vision maintenance. Vitamin A is essential for maintaining the light-sensing cells in your eyes and for the formation of tear fluid ( • Immune function. Vitamin A deficiency impairs your immune function, increasing susceptibility to infections ( • Body growth. Vitamin A is necessary for cell growth in your body. Deficiency may ...

Today many of the second-generation highly cross-linked polyethylenes (HXLPE) use vitamin E (chemical name: α-tocopherol; see Fig. 19.1) as antioxidant to further enhance the longevity of the implant [1–3]. There are two main technologies how to add the vitamin E to the polyethylene: by infusion or by blending. Depending on the manufacturing and sterilisation process and the chosen level of cross-linking, the vitamin E will thus be subjected to different amounts of high energy irradiation. Keywords • Artificial Ageing • Ether Formation • High Energy Irradiation • Pure UHMWPE • Conventional UHMWPE These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves. • Lerf R, Zurbrügg D, Delfosse D. Use of vitamin E to protect cross-linked UHMWPE from oxidation. Biomaterials. 2010;31:3643–8. • Bracco P, Oral E. Vitamin E stabilised UHMWPE for total joint implants. Clin Orthop Relat Res. 2011;469:2286–93. • Oral E, Muratoglu OK. Vitamin E diffused, highly crosslinked UHMWPE: a review. Int Orthop. 2011;35:215e–23. • Al-Malaika S, Ashley H, Issenhuth S. The antioxidant role of α-tocopherol in polymers, I. The nature of transformation products of α-tocopherol formed during melt processing of LDPE. J Polym Sci A. 1994;32:3099–113. • Al-Malaika S. Perspectives in stabilisation of polyolefins. Adv Polym Sci. 2004;169:121–50. • Mallégol J, Carlsson DJ, Deschênes L. Antioxidant effectiveness of v...

Vitamins can be classified based on their solubility. Fat-soluble vitamins are most abundant in high fat foods and are much better absorbed into your bloodstream when you eat them with fat. Most vitamins are water-soluble, meaning they dissolve in water. In contrast, fat-soluble vitamins are similar to oil and do not dissolve in water. There are four fat-soluble vitamins in the human diet: • vitamin A • vitamin D • vitamin E • vitamin K This article provides a comprehensive overview of the fat-soluble vitamins that includes: • health benefits • functions • main dietary sources Vitamin A plays a key role in maintaining your Types Vitamin A is not a single compound. Rather, it is a group of fat-soluble compounds collectively known as retinoids. The most common dietary form of vitamin A is retinol. Other forms — retinal and retinoic acid — are found in the body, but absent or rare in foods. Vitamin A2 (3,4-dehydroretinal) is an alternative, less active form found in freshwater fish ( Summary The main dietary form of vitamin A is known as retinol. Role and function of vitamin A Vitamin A supports many critical aspects of your body function, including: • Vision maintenance. Vitamin A is essential for maintaining the light-sensing cells in your eyes and for the formation of tear fluid ( • Immune function. Vitamin A deficiency impairs your immune function, increasing susceptibility to infections ( • Body growth. Vitamin A is necessary for cell growth in your body. Deficiency may ...

Your body uses vitamin E for multiple purposes, including protecting you from oxidative stress and supporting your immune system. You can get vitamin E from certain foods and dietary supplements. Though vitamin E is often thought of as a single compound, it’s actually a group of eight fat-soluble compounds with powerful antioxidant effects ( Of these eight chemical forms, alpha-tocopherol best meets the dietary requirements of humans ( Vitamin E exists naturally in certain foods, including seeds, nuts, some vegetables, and some fortified products. You can also take it as a dietary supplement. It plays many roles in your body. It’s perhaps best known for its antioxidant effects, protecting your cells from oxidative damage by neutralizing harmful molecules called free radicals. In addition, it’s needed for proper immune function and cellular signaling ( That’s why it’s not surprising that research suggests taking This article covers 8 potential benefits of vitamin E. Because vitamin E acts as a powerful antioxidant in the body, studies have shown that supplementing with high doses of it can reduce markers of oxidative stress and boost antioxidant defenses in some populations ( For example, a 2018 study in 54 people with diabetic nephropathy — kidney damage caused by high blood sugar — found that supplementing with 800 IU of vitamin E per day for 12 weeks significantly increased levels of glutathione peroxidase (GPx) compared with a placebo ( GPx is a group of antioxidant enz...

Vitamins and minerals are micronutrients required by the body to carry out a range of normal functions. However, these micronutrients are not produced in our bodies and must be derived from the food we eat. Vitamins are organic substances that are generally classified as either fat soluble or water soluble. Fat-soluble vitamins ( Minerals are inorganic elements present in soil and water, which are absorbed by plants or consumed by animals. While you’re likely familiar with In the U.S., the National Academy of Medicine (formerly the Institute of Medicine) develops nutrient reference values called the Dietary Reference Intakes (DRIs) for vitamins and minerals. [1] These are intended as a guide for good nutrition and as a scientific basis for the development of food guidelines in both the U.S. and Canada. The DRIs are specific to age, gender, and life stages, and cover more than 40 nutrient substances. The guidelines are based on available reports of deficiency and toxicity of each nutrient. Learn more about vitamins and minerals and their recommended intakes in the table below. Recommended Daily Intake of Vitamins and Minerals for Adults Vitamin (Common Names) Recommended Dietary Allowance (RDA) or Daily Adequate Intake (AI)* Upper Limit Women Men Vitamin A (preformed = retinol; beta-carotene can be converted to Vitamin A) 700 micrograms (2,333 IU) 900 micrograms (3,000 IU) 3,000 micrograms (about 10,000 IU) Thiamin (vitamin B1) 1.1 milligrams 1.2 milligrams Not known 1.1 mi...

Vitamin E is a nutrient that's important to vision, reproduction, and the health of your blood, brain and skin. Vitamin E also has antioxidant properties. Antioxidants are substances that might protect your cells against the effects of free radicals — molecules produced when your body breaks down food or is exposed to tobacco smoke and radiation. Free radicals might play a role in heart disease, cancer and other diseases. If you take vitamin E for its antioxidant properties, keep in mind that the supplement might not offer the same benefits as naturally occurring antioxidants in food. Foods rich in vitamin E include canola oil, olive oil, margarine, almonds and peanuts. You can also get vitamin E from meats, dairy, leafy greens and fortified cereals. Vitamin E is also available as an oral supplement in capsules or drops. Vitamin E deficiency can cause nerve pain (neuropathy). The recommended daily amount of vitamin E for adults is 15 milligrams a day. Research on vitamin E use for specific conditions shows: • Alzheimer's disease. Some research has shown that high-dose vitamin E might delay the progression of Alzheimer's disease in people who have been diagnosed with mild to moderate Alzheimer's disease. Other studies haven't shown this benefit. Vitamin E supplements appear to have no effect on whether people with mild cognitive impairment progress to Alzheimer's disease. • Liver disease. Studies show that vitamin E might improve symptoms of nonalcoholic fatty liver disease...