List the different forms of vitamin E found in the diet as well as their vitamin E activity in the body. What are the major food sources of vitamin E?
What will be an ideal response?
The vitamin E family consists of two subgroups—the tocopherols and the tocotrienols—each containing four members designated by letters of the Greek alphabet (alpha, beta, gamma, and delta). All consist of a complex ring structure with a long saturated (in tocopherols) or unsaturated (in tocotrienols) side chain. The positions of methyl groups (CH3) on the side chain and their chemical rotations distinguish the four members within each subgroup.
Of all the members of the vitamin E family, only alpha-tocopherol is maintained in the body and can meet the body's needs for the vitamin. The others are not converted to alpha-tocopherol in the body, nor are they recognized by its transport protein. For these reasons, the RDA is based only on alpha-tocopherol.
Most vitamin E research has focused on alpha-tocopherol, but recent studies suggest that the other tocopherols and tocotrienols might also be beneficial. For example, gamma-tocopherol and possibly delta-tocopherol, appear to be most effective in inhibiting inflammation and cancer growth. In addition to preventing cancer, tocotrienols may also protect against osteoporosis, diabetes, heart disease, and neurological disorders.
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a. cook all meats, poultry, and eggs until they are well done. b. consume adequate amounts of fruits and vegetables. c. increase consumption of dishes that use ground meats. d. consume lactose-free, low-residue, low-fat liquids.
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Indicate whether the statement is true or false
Which of the following organs is NOT part of the digestive organ system?
A. kidneys B. liver C. pancreas D. small intestine
Which domain of complementary and alternative medicine involves using foods and special diets?
A. biological based practices B. mind-body interventions C. alternative medical systems D. energy medicine