{"id":7287,"date":"2022-12-21T07:39:28","date_gmt":"2022-12-21T07:39:28","guid":{"rendered":"https:\/\/www.lifepronutrition.com\/blog\/general\/protein-what-is-it-made-of-functions-amino-acids-and-biological-value\/"},"modified":"2026-09-16T05:39:47","modified_gmt":"2026-09-16T05:39:47","slug":"protein-what-is-it-made-of-functions-amino-acids-and-biological-value","status":"publish","type":"post","link":"https:\/\/www.lifepronutrition.com\/blog\/en\/proteins\/protein-what-is-it-made-of-functions-amino-acids-and-biological-value\/","title":{"rendered":"Protein. What is it made of? Functions, amino acids, and biological value"},"content":{"rendered":"<h2>What is protein?<\/h2>\n<p>Proteins are macromolecules that are made up of smaller parts, which are called <strong>amino acids<\/strong>. The main function of protein, and therefore of amino acids, is the formation of tissues.<\/p>\n<p>Amino acids are made up of hydrogen, carbon, and oxygen, together with nitrogen in their amino group. Also, certain types of proteins may contain sulfur molecules.<\/p>\n<div class=\"tablaproductos\"><table><tr>\n                <td><img decoding=\"async\" alt=\"Life Pro Milk Protein Isolate Micellar 900g\" title=\"Life Pro Milk Protein Isolate Micellar 900g\" src=\"https:\/\/www.lifepronutrition.com\/img\/p\/5\/6\/4\/7\/5647.jpg\" \/><\/td>\n                <td class=\"descri\">\n                        <span class=\"titulo\">LIFE PRO MILK PROTEIN ISOLATE MICELLAR 900G<\/span>\n                        <p class=\"descripcion\">Aislado de case\u00edna micelar nativa Lacprodan\u00ae MicelPure\u2122 (86,6%) de m\u00e1xima pureza. Prote\u00edna de absorci\u00f3n lenta que nutre tus m\u00fasculos durante horas, ideal antes de dormir. Con enzima Tolerase\u00ae L para una digesti\u00f3n c\u00f3moda. Recuperaci\u00f3n prolongada, saciedad duradera.<\/p><\/td>\n                <td><span class=\"precio\">33.42\u20ac <\/span><span class=\"vechi\">37.13\u20ac<\/span><\/td>\n                <td><a target=\"_blank\" title=\"Ver Life Pro Milk Protein Isolate Micellar 900g\" class=\"enviarnews ver_prod\" href=\"https:\/\/www.lifepronutrition.com\/es\/proteina\/life-pro-isolate-micellar-900g.html\">Ver producto<\/a><\/td>\n          <\/tr>\n        <tr>\n                <td><img decoding=\"async\" alt=\"Life Pro Isolate Gourmet Edition 900g\" title=\"Life Pro Isolate Gourmet Edition 900g\" src=\"https:\/\/www.lifepronutrition.com\/img\/p\/4\/5\/1\/6\/4516.jpg\" \/><\/td>\n                <td class=\"descri\">\n                        <span class=\"titulo\">LIFE PRO ISOLATE GOURMET EDITION 900G<\/span>\n                        <p class=\"descripcion\">La nueva Prote\u00edna aislada dise\u00f1ada por Life Pro. Nueva l\u00ednea de sabores gourmet. Elaborada con prote\u00edna de\u00a0suero de leche.<\/p><\/td>\n                <td><span class=\"precio\">44.59\u20ac <\/span><span class=\"vechi\">49.54\u20ac<\/span><\/td>\n                <td><a target=\"_blank\" title=\"Ver Life Pro Isolate Gourmet Edition 900g\" class=\"enviarnews ver_prod\" href=\"https:\/\/www.lifepronutrition.com\/es\/aislados-de-suero\/life-pro-isolate-gourmet-edition-900g.html\">Ver producto<\/a><\/td>\n          <\/tr>\n        <\/table><\/div>\n<h2>The classification of amino acids:<\/h2>\n<p>Among all amino acids, an initial classification can be made according to whether they are:<\/p>\n<ul>\n<li>Proteinogenic<\/li>\n<li>Non-proteinogenic<\/li>\n<\/ul>\n<h3><strong>Proteinogenic:<\/strong><\/h3>\n<p>From a nutritional point of view, these are the most important. They are the amino acids that can also be found in <strong>BCAAS, MAP, or EEAA supplements<\/strong>.<\/p>\n<p>There are a total of 20 proteinogenic amino acids. Among these 20, we can distinguish between:<\/p>\n<ul>\n<li>Essential amino acids: those that cannot be produced by the body. They must be obtained through food. There are eight essential amino acids: valine, leucine, isoleucine, threonine, lysine, methionine, phenylalanine, and tryptophan<\/li>\n<li>Amino acids that are not essential, which can also be synthesized by the body.<\/li>\n<\/ul>\n<h3><strong>Non-proteinogenic<\/strong><\/h3>\n<p>They originate from the previous group (proteinogenic amino acids). They have biological functions.<\/p>\n<p>Their main functions are as follows:<\/p>\n<ul>\n<li>Energy production.<\/li>\n<li>They can lead to the formation of peptides and other proteins.<\/li>\n<li>The formation of biogenic amines (nitrogenous compounds found in fermented foods and beverages).<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1790 size-full\" src=\"https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52.jpg\" alt=\"sources of protein of plant origin\" width=\"1240\" height=\"550\" srcset=\"https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52.jpg 1240w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-300x133.jpg 300w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-1024x454.jpg 1024w, https:\/\/www.lifepronutrition.com\/blog\/wp-content\/uploads\/2022\/10\/52-768x341.jpg 768w\" sizes=\"auto, (max-width: 1240px) 100vw, 1240px\" \/><\/p>\n<h2>Protein quality:<\/h2>\n<p>When assessing and choosing a protein source, different aspects must be taken into account. Protein quality also refers to an index that indicates the number of essential amino acids a protein source contains. To be considered high-quality protein, it should also contain the 8 essential amino acids that the body cannot synthesize on its own.<\/p>\n<h3><strong>The biological value of protein:<\/strong><\/h3>\n<p><strong>Biological value<\/strong> refers to the body&#8217;s ability to absorb, synthesize, and use the protein source provided.<\/p>\n<p>As a general rule, <strong>foods of animal origin<\/strong>, as well as the protein supplements derived from them, are considered to have <strong>high biological value<\/strong>. Some examples of high-biological-value protein are the following:<\/p>\n<ul>\n<li>Casein, whey protein<\/li>\n<li>Eggs, different meats, etc.<\/li>\n<\/ul>\n<p>On the contrary, foods of <strong>plant origin<\/strong> are not considered to have high biological value because, in general, they do not contain all the essential amino acids in their composition, or contain them in insufficient proportions. This is one of the reasons why different plant-based sources are usually combined to obtain a complete protein.<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;7287&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Valora el articulo&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votos)&quot;,&quot;size&quot;:&quot;22&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 22px; height: 22px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 17.6px;\">\n            <span class=\"kksr-muted\">Valora el articulo<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>What is protein? Proteins are macromolecules that are made up of smaller parts, which are called amino acids. The main function of protein, and therefore of amino acids, is the formation of tissues. Amino acids &#8230; <a title=\"Protein. What is it made of? Functions, amino acids, and biological value\" class=\"read-more\" href=\"https:\/\/www.lifepronutrition.com\/blog\/en\/proteins\/protein-what-is-it-made-of-functions-amino-acids-and-biological-value\/\" aria-label=\"M\u00e1s en Protein. What is it made of? Functions, amino acids, and biological value\">Leer m\u00e1s<\/a><\/p>\n","protected":false},"author":3,"featured_media":1789,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","footnotes":""},"categories":[492,483],"tags":[],"ppma_author":[683],"class_list":["post-7287","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amino-acids","category-proteins","masonry-post","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Protein. Amino acids and biological value - Blog Life Pro Nutrition<\/title>\n<meta name=\"description\" content=\"Protein. What is it made of? 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