100g Fermentis SafSour LB-1™

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Item: BZZZ9770
Regular price $140.72
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Quick Overview

A kettle-souring bacteria that respects the yeast flavor expression

Product Overview

Introducing SafSour LB-1™, the meticulously selected heterofermentative lactic acid bacteria (L. brevis) by Fermentis. This exceptional strain has been carefully chosen for its remarkable ability to deliver precise acidity through the combined production of lactic and acetic acids.

SafSour LB-1™ not only ensures the ideal level of acidity but also maintains the true aromatic essence of your yeast, preserving the unique aromatic signature of the final product. Crafted to perfection, this strain is highly recommended for the production of well-balanced sour beer styles, including Gose, Berliner Weisse, and a myriad of other delightful sour beer variations.

Unlock a world of flavor possibilities with SafSour LB-1™, your ultimate companion in crafting exceptional sour beers with precise acidity and an unparalleled aromatic experience.

  • SafSour LB 1™ acidifies non-hopped wort within 30h – 48h at a temperature of 32°C (+/- 5°C).
  • SafSour LB 1™ as heterofermentative lactic acid bacteria, produces lactic acid and acetic acid.
  • SafSour LB 1™ presents a low tolerance towards iso alpha acids (half of the SafSour LB 1™ growth is inhibited, IC50 of 10 ppm).
  • SafSour LB 1™ reaches a final pH of 3,6 – 3,9 typically.
  • Dry matter: > 90%
  • Viable cells at packaging: > 1.5×1011 cfu/g
  • Acetic acid bacteria: < 1000 cfu/g
  • Coliforms: < 100 cfu/g
  • Yeasts: < 1000 cfu/g
  • Mold: < 1000 cfu/g


It is recommended to pitch directly into the non-hopped wort at the temperature of 32°C (+/- 5°C).

An oxygenation rate of 13 ppm helps achieve a balanced acetic/lactic profile


The optimum dosing rate is 10 g/hL


Product may be transported at ambient temperatures, ideally not more than 86°F for prolonged periods of time, i.e. a maximum of 14 days. Peaks of up to 104°F are allowed.

Shelf Life

Best if used within 36 months after production date when stored under cool temperatures (< 4°C / 39.2°F). Refer to the packaging for “Use Best Before Date.” Do not use soft or damaged sachets.


    • SafSour LB 1 is sensitive to all clinically relevant antibiotics and presents no risk of antibiotic resistance genes diffusion.Biogenic amines-free.


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