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It is used to determine the nutritional efficiency of protein in the diet, [1]: 11 that is, it is used as a measure of "protein quality" for human nutritional purposes. [ 2 ] As a value, NPU can range from 0 to 1 (or 100), with a value of 1 (or 100) indicating 100% utilization of dietary nitrogen as protein and a value of 0 an indication that ...
Biological value (BV) is a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism's body. It captures how readily the digested protein can be used in protein synthesis in the cells of the organism.
Net protein utilization, the percentage of ingested nitrogen retained in the body; NPU terminology (Nomenclature for Properties and Units), ...
Fish caught to make fishmeal and oil currently represent one-third of the global fish harvest. [93] Nutrient loading and carrying capacity: Excess food and fish waste in the water have the potential to increase the levels of nutrients in the water. This can cause the growth of algae, which consumes oxygen that is meant for other plant and ...
Excreted nitrogen finds its way into drinking water, posing a risk for human and animal life. Americans consume some of the highest total and per capita amounts of protein in the world.
The norepinephrine transporter (NET), also known as noradrenaline transporter (NAT), is a protein that in humans is encoded by the solute carrier family 6 member 2 (SLC6A2) gene. [ 5 ] NET is a monoamine transporter and is responsible for the sodium-chloride (Na + /Cl − )-dependent reuptake of extracellular norepinephrine (NE), which is also ...
Marine plants can be found in intertidal zones and shallow waters, such as seagrasses like eelgrass and turtle grass, Thalassia. These plants have adapted to the high salinity of the ocean environment. Light is only able to penetrate the top 200 metres (660 ft) so this is the only part of the sea where plants can grow. [77]
An important step in reducing the impact of aquaculture on wild fish is shifting carnivorous species to plant-based feeds. Salmon feeds, for example, have gone from containing only fishmeal and oil to containing 40 percent plant protein. [106] The USDA has also experimented with using grain-based feeds for farmed trout. [107]