An herb or substance that affects the nutritive processes and metabolic changes in the body, supplies material for tissue building, contains necessary food values such as vitamins and minerals, or which acts to release these elements from other food which has already been eaten but not assimilated. (Syn: Nutriant, Nutritive)
Nutrients are chemical substances contained in food and needed for the body to grow and function optimally. Nutrients fall into two classes: macronutrients and micronutrients. Macronutrients are proteins, carbohydrates and fat. The group of micronutrients comprises vitamins and minerals. Eat a varied diet to get all the nutrients your body needs. For example, fish, meat and poultry contain much protein. Potatoes, rice and cereals are rich in carbohydrates. Fats are found in cheese, butter, meat products. Vitamins are abundant in vegetables and fruits. Dairy products are rich in minerals.
Animal: Material such as protein, vitamins, and minerals required for growth, maintenance, and repair of the body and material such as carbohydrates required for energy. Plant: An essential element in a particular ion or molecule that can be absorbed and used by the plant. For example, carbon, hydrogen, nitrogen, and phosphorus are essential elements; carbon dioxide, water, nitrate (NO3-), and phosphate (PO43-) are the respective nutrients.
Elements or compounds essential as raw materials for organism growth and development. These include C, H, O, N, P, K, Ca, Mg, S, Cu, Fe, Zn, Mn, B, Cl, Ni and Mo plant nutrients. ___________________________________________________________________________________________________
component found in all foods that provides nutrition to the body; includes carbohydrates, fats, proteins, minerals, vitamins; water and fiber are sometimes also included; over 40 nutrients are considered essential and required to sustain the body.
dissolved salts essential to life. zone layer: a layer of the atmosphere between 10 and 40 km above the earth's surface, called the stratosphere, where ozone molecules absorb dangerous ultraviolet radiation from the sun. eat: fibrous substance formed of partly decayed plant material.
Any substance, especially in the soil, which is essential for, and promotes growth of plants. Generally applied to a group of a dozen or less common elements, especially nitrogen, phosphorus and potassium.
a substance that nourishes life. These are essential chemicals needed by plants or animals for growth. If other physical and chemical conditions are appropriate, excessive amounts of nutrients can lead to degradation of water quality by promoting excessive growth, accumulation, and subsequent decay of plants, especially algae. Some nutrients can be toxic to plants and animals at high concentrations.
A foodstuff or other substance that provides the body with nourishing factors for continued metabolism and survival, through the sustainability and transference of energy. (See also Macronutrients and Micronutrients).
Chemical elements or compounds that are essential raw materials for the growth and development of plants and/or soil organisms. Nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, chlorine, copper, iron, manganese, molybdenum, and zinc are absorbed by roots from the soil and are necessary for completion of the normal life cycle of all plants.
A substance or recognized plant nutrient, element, or compound which is used or sold for its plant nutritive content. The term can include livestock and poultry manures, compost as fertilizer, commercially manufactured chemical fertilizers, sewage sludge or any combination thereof.
A nutrient is either a chemical element or compound used in an organism's metabolism or physiology. Six nutrient groups exist and are broadly classified into those providing energy, and those used as components in the body or cellular structures. A nutrient is essential to an organism if it cannot be synthesized in the organism and must be obtained from a food source.