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unrefined vegetable oils 1929: Vitamin K 1 (Phylloquinone) Leaf vegetables: 1931: Vitamin B 5 (Pantothenic acid) Meat, whole grains, in many foods 1934: Vitamin B 6 (Pyridoxine) Meat, dairy products 1936: Vitamin B 7 [26] Meat, dairy products, Eggs 1936: Vitamin B 3 (Niacin) Meat, grains: 1941: Vitamin B 9 (Folic acid) Leaf vegetables 1948 ...
Vegetables contain many vitamins and minerals; however, different vegetables contain different balances of micronutrients, so it is important to eat a wide variety of types. For example, orange and dark green vegetables typically contain vitamin A , dark green vegetables contain vitamin C , and vegetables like broccoli and related plants ...
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite .
Vegetables refer to any other part of the plant that can be eaten, including roots, stems, leaves, flowers, bark or the entire plant itself. [44] These include root vegetables (potatoes and carrots), bulbs (onion family), flowers (cauliflower and broccoli), leaf vegetables ( spinach and lettuce) and stem vegetables (celery and asparagus ).
Carbohydrates contain 4 calories per gram. Lipids provide animals with fats and oils. They are not soluble in water, and they can store energy for an extended period of time. They can be obtained from many different plant and animal sources. Most dietary lipids are triglycerides, composed of glycerol and fatty acids.
Vitamins occur in a variety of related forms known as vitamers. The vitamers of a given vitamin perform the functions of that vitamin and prevent symptoms of deficiency of that vitamin. Vitamins are those essential organic molecules that are not classified as amino acids or fatty acids.
Vitamin E, including tocotrienol and tocopherol, is fat soluble and protects lipids. Sources include wheat germ, seabuckthorn, nuts, seeds, whole grains, green leafy vegetables, kiwifruit, vegetable oil, and fish-liver oil. Alpha-tocopherol is the main form in which vitamin E is consumed.
Primary nutritional groups are groups of organisms, divided in relation to the nutrition mode according to the sources of energy and carbon, needed for living, growth and reproduction. The sources of energy can be light or chemical compounds; the sources of carbon can be of organic or inorganic origin.