PurMa™ Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX)

Description

PurMa™ Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑alanyl‑L‑glutamine  – High Glucose, | PurMa Biologics

Product Overview

PurMa Biologics

PurMa™ Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑alanyl‑L‑glutamine is an advanced classical cell culture medium designed for mammalian cell culture that demands higher stability and performance than regular DMEM. DMEM‑MAX is optimized for primary cells and sensitive cell lines, providing superior buffering capacity and a more stable glutamine source.

Major difference vs. regular DMEM:
Standard Dulbecco’s Modified Eagle’s Medium (DMEM) uses L‑glutamine supplementation. DMEM‑MAX replaces L‑glutamine with 4 mM L‑alanyl‑L‑glutamine, which greatly enhances stability and reduces toxic by‑products.

 Advantages of Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑alanyl‑L‑glutamine 

Compared with regular DMEM, PurMa Biologics Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑alanyl‑L‑glutamine offers:

• Higher pH capacity for more stable culture conditions
• 4 mM L‑alanyl‑L‑glutamine (0.869 g/L) instead of L‑glutamine
• Longer shelf life of the medium due to improved glutamine stability
• Minimized toxic ammonia build‑up from glutamine degradation
• Improved cell viability and growth in primary and continuous cell lines
• Stability across a wide range of temperatures
• Enhanced performance for primary cell culture, including sensitive mammalian cells

DMEM MAX with L‑Alanyl‑L‑Glutamine is ideal when you need consistent, high‑quality performance in demanding cell culture workflows.

Why L‑Alanyl‑L‑Glutamine Instead of L‑Glutamine? (Mechanism)

While L‑glutamine is an essential amino acid for mammalian cells, it is chemically unstable in aqueous solution. Over time, L‑glutamine degrades and generates toxic ammonia and pyrrolidone carboxylic acid, which can:

• Stress or damage cells which is proven to be far less in Dulbecco’s Modified Eagle’s Medium Max
• Reduce viability and growth
• Compromise experimental reproducibility

One way to address this is to frequently add fresh L‑glutamine to the medium, but this is labor‑intensive and difficult to control precisely.

PurMa™ Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑alanyl‑L‑glutamine solves this problem by using L‑alanyl‑L‑glutamine, a dipeptide form that is:

• Much more stable in aqueous solution
• Resistant to rapid degradation, limiting ammonia formation
• Slowly cleaved by aminopeptidases, gradually releasing L‑glutamine and L‑alanine
• Providing a sustained source of glutamine for protein synthesis and metabolism (e.g., TCA cycle)

The result is healthier cells, less toxicity, and more reproducible results over longer culture periods.

In addition to our DMEM‑MAX formulations, PurMa Biologics also manufactures PurMa™ GluaSup (Cat# P3S210559), a standalone L‑alanyl‑L‑glutamine supplement designed to prevent L‑glutamine degradation in other media.

 DMEM‑MAX Composition and Features

PurMa Biologics Dulbecco’s Modified Eagle’s Medium‑MAX (DMEM‑MAX) contains:

• 4 mM L‑alanyl‑L‑glutamine (0.869 g/L) – stable glutamine source
• 5 mM sodium pyruvate – additional energy substrate
• High glucose (4.5 g/L) – supports metabolically active, fast‑growing cells
• Non‑essential amino acids (NEAA) – reduce biosynthetic burden on cells
• 3.7 g/L sodium bicarbonate – enhanced buffering capacity
• Phenol red – visual pH indicator

PurMa Biologics manufactures several DMEM‑MAX variants based on different sodium bicarbonate and HEPES levels to fine‑tune pH capacity and buffering for your specific incubator CO₂ conditions and experimental requirements.

Serum Supplementation

Like classical DMEM, DMEM‑MAX contains no proteins, lipids, or growth factors. Therefore, it requires supplementation, commonly with 10% Fetal Bovine Serum (FBS) or a suitable serum‑free or defined supplement appropriate for your cell type.

Applications of DMEM‑MAX

PurMa™ Dulbecco’s Modified Eagle’s Medium‑MAX (DMEM‑MAX) is recommended for:

• Primary mammalian cell cultures
• Sensitive or fastidious cell lines requiring stable culture conditions
• Long‑term cultures where ammonia build‑up is a concern
• High‑density cultures and scale‑up experiments
• Applications where standard DMEM does not provide sufficient stability or performance,  Modified Eagle’s Medium Max DMEM works far better and more efficiently.
• Lastly, based on our decades of experience, PurMa™ Dulbecco’s Modified Eagle’s Medium MAX DMEM MAX L‑alanyl‑L‑glutamine is proven to grow any cell line properly.

Formulation Details

For a complete list of amino acids, vitamins, salts, and other components, please refer to the full DMEM‑MAX formulation:DMEM MAX Formulation

FAQ 

What is the main difference between DMEM‑MAX and regular DMEM?
DMEM‑MAX replaces unstable L‑glutamine with 4 mM L‑alanyl‑L‑glutamine, providing higher stability, reduced ammonia build‑up, and improved cell viability compared with standard DMEM.

Does PurMa™ Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑Alanyl‑L‑Glutamine, contain FBS?
No. DMEM‑MAX does not contain FBS, proteins, lipids, or growth factors and should be supplemented, typically with 10% Fetal Bovine Serum (FBS) or an appropriate serum‑free supplement.

Why is L‑alanyl‑L‑glutamine better for long‑term culture?
L‑alanyl‑L‑Glutamine is more stable in aqueous solution and does not rapidly degrade to ammonia. It is slowly cleaved by aminopeptidases to release L‑glutamine and L‑alanine, supporting cell growth while minimizing toxic by‑products.

H3: What cell types are suitable for DMEM‑MAX?
Dulbecco’s Modified Eagle’s Medium MAX (DMEM MAX ) with L‑Alanyl‑L‑Glutamine, is suitable for a wide range of mammalian cells, especially primary cells and sensitive cell lines that benefit from stable glutamine and enhanced buffering capacity.

References:

1. A cell culture medium that supports the differentiation of human retinal pigment epithelium into functionally polarized monolayers. Hu J, Bok D. Mol Vis. 2001 Feb 7;7:14-9. PMID: 11182021
2. Induction of differentiation by pyruvate and DMEM in the human retinal pigment epithelium cell line ARPE-19. Ahmado A, et al., Invest Ophthalmol Vis Sci. 2011 Sep 9;52(10):7148-59. doi: 10.1167/iovs.10-6374.PMID: 21743014
   
3. Protective layer formation on magnesium in cell culture medium. Wagener V, et al., Mater Sci Eng C Mater Biol Appl. 2016 Jun;63:341-51. doi: 10.1016/j.msec.2016.03.003. Epub 2016 Mar 3.PMID: 27040228

Learn more: What Is DMEM?