{"product_id":"aldc-enzyme-brewing","title":"alpha acetolactate decarboxylase (ALDC)","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0830\/2470\/7923\/files\/ChatGPT_Image_Aug_12_2026_10_34_00_AM.png?v=1786527257\" alt=\"\" width=\"502\" height=\"275\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlpha acetolactate decarboxylase (ALDC):\u003c\/strong\u003e Concentrated high activity enzyme which prevents diacetyl formation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplications include:\u003c\/strong\u003e Brewing, Wine, Dairy, Food and Flavour, Academic Research\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProperties: \u003c\/strong\u003eAcetolactate decarboxylase (ALDC) is an enzyme widely used in brewing to prevent the formation of diacetyl, an unwanted by-product that imparts a buttery off-flavour to beer. The enzyme catalyses the rapid conversion of α-acetolactate—a precursor naturally produced by yeast during fermentation—into acetoin and carbon dioxide, bypassing the slow, spontaneous oxidation step that generates diacetyl. ALDC is a non-thiamine-dependent carboxy-lyase (EC 4.1.1.5) that functions optimally around pH 5.5–6.5 and 30–40°C, conditions typical of beer fermentation. It is a tetrameric enzyme with a molecular weight of about 25–30 kDa per subunit and does not require metal cofactors for activity. By accelerating acetolactate breakdown, ALDC shortens maturation time, enhances flavour stability, and allows brewers to produce cleaner-tasting beers more efficiently.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChemical Formula:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch2\u003e\n\u003cspan class=\"base\"\u003e\u003cspan class=\"mopen\"\u003e(\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eS\u003c\/span\u003e\u003cspan class=\"mclose\"\u003e)\u003c\/span\u003e\u003cspan class=\"mord text\"\u003e\u003cspan class=\"mord\"\u003e-\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e2\u003c\/span\u003e\u003cspan class=\"mord text\"\u003e\u003cspan class=\"mord\"\u003e-acetolactate\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e→\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mopen\"\u003e(\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eR\u003c\/span\u003e\u003cspan class=\"mclose\"\u003e)\u003c\/span\u003e\u003cspan class=\"mord text\"\u003e\u003cspan class=\"mord\"\u003e-\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003ea\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003ece\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003et\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eo\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003ein\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e+\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eC\u003c\/span\u003e\u003cspan class=\"mord\"\u003e\u003cspan class=\"mord mathnormal\"\u003eO\u003c\/span\u003e\u003cspan class=\"msupsub\"\u003e\u003cspan class=\"vlist-t vlist-t2\"\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan\u003e\u003cspan class=\"pstrut\"\u003e\u003c\/span\u003e\u003cspan class=\"sizing reset-size6 size3 mtight\"\u003e\u003cspan class=\"mord mtight\"\u003e2\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003c\/blockquote\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification: \u003c\/strong\u003eFood grade, ISO22000\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eAppearance \u0026amp; density:\u003c\/strong\u003e Brown liquid, \u003c\/span\u003e\u003cspan\u003e1.2-1.25 g \/ mL\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 25-40\u003cspan\u003e°C     \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 5.0-7.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrates: \u003c\/strong\u003eAcetolactate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProducts: \u003c\/strong\u003eAcetoin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuggested Dosage:\u003c\/strong\u003e 0.1-1% v\/v\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage: \u003c\/strong\u003e\u0026gt;12 months, store dark between 5-25 deg. C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety: \u003c\/strong\u003e(contact)  \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Data Sheet: \u003c\/strong\u003e(contact us) \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExample Use Cases: \u003c\/strong\u003e(contact us) \u003cstrong\u003e        \u003c\/strong\u003e      \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Scientific and Technical Limited","offers":[{"title":"100 mL","offer_id":49955460153683,"sku":"ST0101","price":58.99,"currency_code":"GBP","in_stock":true},{"title":"1 L","offer_id":52224635797843,"sku":"ST0403","price":349.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/2470\/7923\/files\/ChatGPT_Image_Aug_14_2026_11_22_49_AM.png?v=1786702982","url":"https:\/\/www.scientificandtechnical.com\/products\/aldc-enzyme-brewing","provider":"Scientific and Technical Limited","version":"1.0","type":"link"}