{"id":110318,"date":"2024-07-17T08:56:28","date_gmt":"2024-07-17T14:56:28","guid":{"rendered":"https:\/\/purmabiologics.com\/blog\/?post_type=product&#038;p=110318"},"modified":"2026-07-23T10:49:48","modified_gmt":"2026-07-23T16:49:48","slug":"mem-alpha-modification-max-in-earles-buffer-mem-alpha-max","status":"publish","type":"product","link":"https:\/\/purmabiologics.com\/blog\/product\/mem-alpha-modification-max-in-earles-buffer-mem-alpha-max\/","title":{"rendered":"MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX)"},"content":{"rendered":"<h2>Background<\/h2>\n<p>MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX) is a commonly used media for Mammalian cell culture.<\/p>\n<h2>Advantages<\/h2>\n<p>MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX) performs better than MEM for a number of cell lines, please see the description of regular MEM-\u03b1: <span style=\"color: #0000ff;\">MEM-\u03b1 in Earle&#8217;s Buffer<\/span><\/p>\n<h3>The advantages of MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX) over MEM-\u03b1 are:<\/h3>\n<ul>\n<li>Higher PH Capacity<\/li>\n<li>Moreover, it contains 4 mM L-Alanyl-L-Glutamine (0.869 g\/L) instead of L-Glutamine and therefore:<\/li>\n<li>Possess longer shelf life.<\/li>\n<li>More importantly, minimizes toxic ammonia build-up.<\/li>\n<li>Significantly improves cell viability and growth.<\/li>\n<li>Remains stable across a wide range of temperatures.<\/li>\n<li>Improves the culture of primary cells.<\/li>\n<\/ul>\n<h2>Mechanism<\/h2>\n<p>Although L-glutamine is a vital amino acid, it degrades, generating toxic ammonia and pyrrolidine carboxylic acid. One way to minimize L-glutamine degradation in media is to gradually add these amino acids to your cell culture. However, keeping track of time to keep the amount of L-glutamine at the same level is tedious, if not impossible.<\/p>\n<p>Alternatively, L-alanyl-L-glutamine can be used because it is much more stable in aqueous solutions. More importantly, it does not easily degrade and gradually releases aminopeptidases. As a result, L-glutamine and L-alanine are then used by the cells for protein production in the TCA cycle.<\/p>\n<p>In addition to our Max formulation products, we manufacture PurMa<sup>TM <\/sup>GluaSup (Cat# P3S210 559), a combination of L-alanyl-L-glutamine that prevents the degradation of L-glutamine.<\/p>\n<h2>Contents<\/h2>\n<h3>MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX) contains:<\/h3>\n<ul>\n<li>5 mM sodium pyruvate<\/li>\n<li>High glucose (4.5g\/L)<\/li>\n<li>Non-Essential Amino Acids<\/li>\n<li>3.7 g\/L Sodium Bicarbonate; PurMa Biologics Manufactures several types of MEM-\u03b1-MAX based on the amount of Sodium Bicarbonate and HEPES (PH capacity)<\/li>\n<li>Phenol Red<\/li>\n<\/ul>\n<p>MEM Alpha-Modification MAX in Earle\u2019s Buffer (MEM-Alpha-MAX) contains no proteins, lipids, or growth factors. Therefore, it requires supplementation, commonly with 10% Fetal bovine Serum (FBS).<\/p>\n<h2>Formulation<\/h2>\n<p>The complete formulation can be found here: <a href=\"https:\/\/purmabiologics.com\/blog\/wp-content\/uploads\/2023\/06\/MEM-alpha-MAX-Formulation-in-Earls-Buffer-P3M310123.pdf\" target=\"_blank\" rel=\"noopener\"><strong><span style=\"color: #0000ff;\">MEM-alpha-MAX Formulation in Earl&#8217;s Buffer<\/span><\/strong><\/a><\/p>\n<h2>References<\/h2>\n<ol>\n<li>The growth of L-cells and Vero cells on an autoclavable MEM-peptone medium. L Keay Biotechnology and bioengineering, 19(3), 399-411 (1977-03-01).<\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/7734915\/\" rel=\"nofollow noopener\" target=\"_blank\">Minimum essential medium alpha (MEM) enhances assisted reproductive technology results. I. Mouse embryo study. <\/a>Wun WS, Wun CC, Grunert GM. J Assist Reprod Genet. 1994 Jul;11(6):303-7. doi: 10.1007\/BF02215717. PMID: 7734915.<\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/7711383\/\" rel=\"nofollow noopener\" target=\"_blank\">Alpha-minimum essential medium (MEM) enhances in vitro hatched blastocyst development and cell number per embryo over Ham&#8217;s F-10. <\/a>Roudebush WE, Often NL, Butler WJ. J Assist Reprod Genet. 1994 Apr;11(4):203-7. doi: 10.1007\/BF02211809. PMID: 7711383.<\/li>\n<\/ol>\n<div class=\"table-2\">\n<table width=\"100%\">\n<thead>\n<tr>\n<th align=\"left\">Parameter<\/th>\n<th align=\"left\">Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">Appearance<\/td>\n<td align=\"left\">Red, clear liquid<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">pH<\/td>\n<td align=\"left\">7.2 \u00b1 0.1<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Osmolality<\/td>\n<td align=\"left\">275-360 mOsm\/L<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Endotoxin<\/td>\n<td align=\"left\">NMT&lt; 2EU\/mL<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Mycoplasma<\/td>\n<td align=\"left\">Negative<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Suitability<\/td>\n<td align=\"left\">\u00a0Suitable for mammalian cell culture<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Additive<\/td>\n<td align=\"left\">Sodium pyruvate<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Indicator<\/td>\n<td align=\"left\">Phenol red<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Mycoplasma Detection<\/td>\n<td align=\"left\">Negative<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Sterility Tested<\/td>\n<td align=\"left\">Sterile filtered using 0.22 \u00b5m filter<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Form<\/td>\n<td align=\"left\">Liquid<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Shipping Condition<\/td>\n<td align=\"left\">\u00a0Room temperature<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MEM Alpha-Modification MAX (MEM-\u03b1-MAX) in Earle\u2019s Buffer contains L-Alanyl-L-Glutamine, therefore supplying a longer shelf life. \u00a0 MEM-\u03b1-MAX in EBBS significantly improves cell viability and growth. We manufacture several types of MEM-\u03b1-MAX based on your requirements.<\/p>\n","protected":false},"featured_media":127445,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[283,604],"product_tag":[581,519,520,682,666,556,595,517,522,545,683,546],"class_list":["post-110318","product","type-product","status-publish","has-post-thumbnail","product_cat-cell-culture-media","product_cat-mem-alpha-modification-in-earles-buffer-mem-","product_tag-cell-culture","product_tag-earles-buffer","product_tag-ebss","product_tag-glucose","product_tag-l-alanyl-l-glutamine","product_tag-mammalian-cells","product_tag-max","product_tag-mem-alpha","product_tag-mem-","product_tag-phenol-red","product_tag-sodium-bicarbonate","product_tag-without-phenol-red","entry","has-media","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-variable","has-product-nav","col","span_1_of_4","owp-content-center","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails"],"acf":[],"_links":{"self":[{"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/product\/110318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/comments?post=110318"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/media\/127445"}],"wp:attachment":[{"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/media?parent=110318"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/product_brand?post=110318"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/product_cat?post=110318"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/purmabiologics.com\/blog\/wp-json\/wp\/v2\/product_tag?post=110318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}