{"id":1897,"date":"2015-11-01T18:15:21","date_gmt":"2015-11-02T02:15:21","guid":{"rendered":"http:\/\/hellbach.us\/blog\/?p=1897"},"modified":"2015-11-01T18:15:21","modified_gmt":"2015-11-02T02:15:21","slug":"enzymes-in-beer-whats-happening-in-the-mash","status":"publish","type":"post","link":"https:\/\/hellbach.us\/blog\/food-drink\/beer\/enzymes-in-beer-whats-happening-in-the-mash\/","title":{"rendered":"Enzymes in Beer: What\u2019s Happening In the Mash"},"content":{"rendered":"<div class='__iawmlf-post-loop-links' style='display:none;' data-iawmlf-post-links='[{&quot;id&quot;:1569,&quot;href&quot;:&quot;http:\\\/\\\/www.homebrewersassociation.org\\\/how-to-brew\\\/enzymes-in-beer-whats-happening-in-the-mash&quot;,&quot;archived_href&quot;:&quot;http:\\\/\\\/web-wp.archive.org\\\/web\\\/20250831061619\\\/https:\\\/\\\/homebrewersassociation.org\\\/how-to-brew\\\/enzymes-in-beer-whats-happening-in-the-mash\\\/&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2025-11-18 22:30:53&quot;,&quot;http_code&quot;:206}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2025-11-18 22:30:53&quot;,&quot;http_code&quot;:206},&quot;process&quot;:&quot;done&quot;}]'><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"http:\/\/s3-us-west-2.amazonaws.com\/homebrewassoc\/wp-content\/uploads\/2015\/10\/29175125\/enzymesFEATURE.jpg\" alt=\"\" width=\"320\" height=\"360\" \/>As homebrewers, we\u2019re usually never satisfied until we know how things work. We constantly ask why and how something is done until we understand the basic concept. When you start brewing all-grain, you hit a certain temperature to hit a specific characteristic because you were told to do so. You start picking up on words like alpha-amylase, beta-amylase, mash out and protein rest, and now you\u2019re more curious than ever about what\u2019s going on in the mash.<\/p>\n<p>Here we\u2019ll\u00a0discuss the enzymes in beer, which convert the starch in malt into soluble sugars. By understanding and making\u00a0enzymes work for you, an all-grain brewer can control a multitude of components\u00a0in their beer. Here is a list of the attributes of a beer that can be controlled during the mashing process:<\/p>\n<ul style=\"columns: 2; column-count: 2; -webkit-column-count: 2; -moz-column-count: 2;\">\n<li>Aroma<\/li>\n<li>Flavor<\/li>\n<li>Body<\/li>\n<li>Overall mouthfeel<\/li>\n<li>Attenuation<\/li>\n<li>Color<\/li>\n<li>Alcohol content<\/li>\n<\/ul>\n<h2>What Are Enzymes In Beer?<\/h2>\n<p>Enzymes are proteins that are found practically everywhere\u2014your saliva and digestive system, plant photosynthesis, and most importantly, your livers. They have an important role as a non-living biomolecule because they catalyze biochemical reactions. Each enzyme is made up of several thousand different amino acid chains which take on specific shapes suited for specific jobs. In other words, they make reactions occur quickly and at the temperatures of living organisms. They join molecules together, take large molecules apart and rearrange molecules into something different.<\/p>\n<p>Each biochemical reactions is catalyzed by a very specific enzyme. The molecule the enzyme acts on is called a\u00a0substrate, and the enzyme is usually named after the substrate (i.e. Beta-Glucanase acts on Beta-Glucans). Just know that the\u00a0enzyme\u2019s shape is fragile and can be damaged by a multitude of factors, thereby rendering the enzyme unable to act as a catalyst. This is called denaturing the enzyme, and once it\u2019s been damaged, it\u2019s very difficult to renature it.<\/p>\n<p>The rate at which the chemical reaction occurs is affected by temperature,\u00a0enzyme and substrate concentration and pH. Enzymes catalyze reactions more quickly as temperature increases in their specific range. But, they\u2019re\u00a0also denatured by heating above their specified range, and reach peak activity just before they are destroyed.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19135\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/homebrewassoc\/wp-content\/uploads\/2015\/10\/29175207\/enzym2.jpg\" alt=\"Malt Enzymes Homebrewing\" width=\"900\" height=\"675\" \/><\/p>\n<h2>Mashing Enzymes In Beer<\/h2>\n<p>All the enzymes you\u2019ll need for conversion are present in the final malt. The malting process develops enzymes that reduce starches and proteins during malting and mashing, which helps create better clarity, head retention and body.<\/p>\n<p>For homebrewers, we are concerned with the activity of two primary\u00a0enzymes in beer:\u00a0alpha- and beta-amylase.<\/p>\n<p>Alpha-amylase breaks down\u00a0large, complex, insoluble starch molecules into smaller, soluble molecules for the beta-amylase. It is stable in hot, watery mashes and will convert starch to soluble sugars in a temperature range from 145\u00b0F to 158\u00b0F.<\/p>\n<p>Remember that the temperature range is important because as you reach higher temperatures, the denaturation process increases and enzymes are mostly gone within five minutes. Pouring grains into hotter \u201cstrike\u201d water to account for temperature drops can cause problems, too. Exposure to hotter temperatures even for a few seconds can affect enzymatic activity, so make sure to get your temperature down as quickly as possible.<\/p>\n<p>Beta-amylase is the other mash enzyme capable of breaking down starches and creating soluble sugars. After the alpha-amylase enzymes create smaller soluble molecules, the beta-amylase enzymes create most of the fermentable sugars by breaking down starch to create maltose, glucose and maltose. These enzymes help create lighter bodies and more alcohol and are most active from 131\u00b0F-149\u00b0F. As the temperature approaches 149\u00b0F, these enzymes are operating extremely fast, but are also being denatured quickly. In short, if the mash is held at a temperature within the beta-amylase range, then a greater proportion of soluble sugars will be maltose and thereby be more fermentable.<\/p>\n<h2>Temperature Rests in the Mash<\/h2>\n<p>Mash temperatures play a very critical role in determining the body, fermentability and developing the aroma and flavor profile of your beer. Depending on the style of beer brewed and the type of malt and\/or adjuncts used, a different mash temperature or a combination of temperatures and schedule may be best for the brewing beer.<\/p>\n<table>\n<thead>\n<tr>\n<th>Name<\/th>\n<th>Temperature<\/th>\n<th>pH Range<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Phytase (Acid) Rest<\/td>\n<td>86\u00b0 \u2013 126\u00b0F<\/td>\n<td>5.0 \u2013 5.5<\/td>\n<td>Acidifies the mash. Best with under modified malts. Will not reduce the pH a lot by itself. More of a historical method used with pale malt in Pilsen due to water devoid of minerals.<\/td>\n<\/tr>\n<tr>\n<td>Beat-Glucanase Rest<\/td>\n<td>95\u00b0-113\u00b0F<\/td>\n<td>4.5-5.0<\/td>\n<td>Beta-glucans are carbohydrates found in the protein layer in grains. Found in rye, wheat, oats and under modified malts. Not needed for well modified grains. Good to use if you\u2019re using 25% or more of un-malted barley, wheat, rye and oats.<\/td>\n<\/tr>\n<tr>\n<td>Proteinase (Protein Rest)<\/td>\n<td>111\u00b0-131\u00b0F<\/td>\n<td>4.2-5.3<\/td>\n<td>Optimal from 122\u00b0F. Breaks down peptones, polypeptides and peptides to make them smaller, improving clarity without negatively affecting head retention or body. Breaks down long-chain proteins to medium and short-chains. Typically done for 15-30 minutes.<\/td>\n<\/tr>\n<tr>\n<td>Peptidase Rest<\/td>\n<td>115\u00b0-135\u00b0F<\/td>\n<td>Below 5.3<\/td>\n<td>Breaks down polypeptides and peptides to amino acids. In fully modified malts has done its work during malting process.<\/td>\n<\/tr>\n<tr>\n<td>Cytase Rest<\/td>\n<td>113\u00b0-131\u00b0 F<\/td>\n<td>5.5<\/td>\n<td>Dissolves protective cellulose coating of barley grains, giving access to the starch. Good for under modified malt, and un-mlated barley, wheat, rye and oats\u00a0if using more than 25%.<\/td>\n<\/tr>\n<tr>\n<td>Beta-Amylase<\/td>\n<td>131\u00b0-150\u00b0F<\/td>\n<td>5.0-5.6<\/td>\n<td>This rest works well at 153\u00b0F as a compromise for beta and alpha rests. Creates small sugar chains that are highly fermentable and leaves the lowest finished gravity and lightest body. One of the diastatic enzymes required for saccharification.<\/td>\n<\/tr>\n<tr>\n<td>Alpha-Amylase<\/td>\n<td>149\u00b0-162\u00b0F<\/td>\n<td>5.3-5.8<\/td>\n<td>Produces glucose, maltose and un-fermentable dextrins. Leaves the highest finished gravity and fuller body. Can be slower to work than beta-amylase. Most active at 158\u00b0F.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19136\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/homebrewassoc\/wp-content\/uploads\/2015\/10\/29175249\/enzym1.jpg\" alt=\"Malt Enzymes Homebrewing\" width=\"900\" height=\"675\" \/><\/p>\n<h2>Influencing Factors on Denaturing Enzymes in Beer<\/h2>\n<p>Alpha and beta-amylase act together to\u00a0degrade\u00a0starches\u00a0to produce a range of soluble sugars in the wort. Below a certain temperature (149\u00b0F), alpha-amylase activity is low and so the large starch molecules remain insoluble because the enzyme is unable to break them up. Same goes for above a certain temperature (150\u00b0 F), beta-amylase\u00a0activity is hindered, limiting the amount of fermentable sugars for the wort.<\/p>\n<p>These temperature ranges are small, and leaves little room for\u00a0a brewer\u00a0to\u00a0operate and\u00a0influence the types of sugars that end up in the wort. A lower temperature results in a wort that is more fermentable but may yield slightly less, while a higher temperature will yield less fermentability but increased extract efficiency. Here are some important influencing factors on denaturing enzymes in beer.<\/p>\n<ul>\n<li>Enzyme and substrate concentration<\/li>\n<li>Temperature<\/li>\n<li>pH<\/li>\n<\/ul>\n<h3>Enzyme &amp; Substrate Concentration<\/h3>\n<p>Enzyme and substrate concentration is how concentrated your mash is, and mostly dependent on mash thickness. Although not a critical factor, mash thickness is still important to consider when you start mashing.\u00a0A thick mash is anywhere between 1-1.25 quarts water\/pound of grain.<\/p>\n<p>A thick mash gives a quicker starch conversion and is more beneficial for protein breakdown because it offers better protection for your enzymes (i.e. beta-amylase). It\u2019s more suited for step mashes because enzymes are not denatured as fast by temperature increases. A thin mash is anywhere around 2 quarts water\/pound of grain, which dilutes the concentration of enzymes and thereby gives them less protection, a slower conversion, but provides a more fermentable mash because the enzymes are not inhibited by a higher concentration of sugars.<\/p>\n<h3>Temperature<\/h3>\n<p>Each enzyme has an optimum temperature, the temperature at which the enzyme is most active. Once the temperature goes below or above the temperature range, you affect the productivity of that enzyme. Think about a cold morning. You\u2019re lethargic and slow, but as it warms up you start to move faster and your energy improves. However, if it gets too hot, you start to slow down again. This is essentially how enzymes work. More specifically, the active site on the enzyme changes and the substrate that pairs with the enzyme will no longer fit and becomes inactive.<\/p>\n<h3>pH<\/h3>\n<p>Mash pH is another factor that affects the activity of various enzymes. It should fall within a range of about 5.2 to 5.5 for the primary enzyme activity. If you mash using distilled water, you\u2019ll end up with a pH in between 5.8 and 6.0. Adding calcium ions to the water will cause the mash pH to drop down into the 5.5 to 5.6 range, with additional calcium ions dropping it further. You\u2019ll want to use a pH strip to calibrate your water pH level as you mash.<\/p>\n<h2>\u00a0Key Take Aways<\/h2>\n<ul>\n<li>Although enzymes are fragile, they are reusable and generally affected by temperature\u00a0and pH.<\/li>\n<li>Enzymes have an optimum temperature\u00a0and pH that they are most active.<\/li>\n<li>Enzymes have a significant affect on finished beer and are\u00a0also\u00a0present in yeast cells.<\/li>\n<li>Understand the primary mash enzymes (alpha and beta-amylase) and their optimal temperature and pH levels to achieve best results.<\/li>\n<li>It\u2019s important to understand the factors that denature enzymes.<\/li>\n<li>Know what you want to accomplish before deciding your mash technique.<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Sources:<\/strong><\/p>\n<p>\u201cMaking Enzymes Work For You\u201d by Randy Scorby, BJCP Continuing Education Director and Grand Master II Judge, 2015 National Homebrewers Conference Seminar<\/p>\n<p>&nbsp;<\/p>\n<p><em>source: <a href=\"http:\/\/www.homebrewersassociation.org\/how-to-brew\/enzymes-in-beer-whats-happening-in-the-mash\/\" target=\"_blank\" rel=\"nofollow\">AHA<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As homebrewers, we\u2019re usually never satisfied until we know how things work. We constantly ask why and how something is done until we understand the basic concept. When you start brewing all-grain, you hit a certain temperature to hit a &hellip; <a href=\"https:\/\/hellbach.us\/blog\/food-drink\/beer\/enzymes-in-beer-whats-happening-in-the-mash\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[74,120,119,72],"class_list":["post-1897","post","type-post","status-publish","format-standard","hentry","category-beer","tag-beer","tag-enzymes","tag-enzymes-in-beer","tag-mash"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Enzymes in Beer: What\u2019s Happening In the Mash - Hellbach blog<\/title>\n<meta name=\"description\" content=\"Enzymes in beer convert starches to soluble sugars. 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