Propionic Shermanii 1 (PB1)


Small, Medium and Large sizes are available from the dropdown menu below

SKU: Propioni PB1 Category:

Types of Cheese Propioni. can be used on

All large eye cheeses such as Baby Swiss, Large Swiss styles, Emmental, Gruyère, Jarlsberg, Comte, Leerdammer, Maasdam.

Dosage and pack size

  • Large Size (5 D) will inoculate up to 500 litres of milk (foil sachet).
  • Small size (2.5 D) will inoculate up to 250 litres of milk (screw cap bottle).
  • Add ¼ drop spoon to 8 litres of milk or the volume your recipe prescribes.


  • Lyofast PB 1 is a freeze-dried culture, it consists of selected strains of Propionibacterium freudenreichii ssp. shermanii. Lyofast.
  • Produces more and faster eyes than other Propionic bacterium.
  • PB 1 may be applied to produce big-eyed hard cheese such as Emmentaler and Swiss cheese types.
  • Lyofast PB 1 ferments lactose and lactate producing carbon dioxide, propionic acid, and acetic acid. Lyofast
  • It also plays a role in developing nutty and sweet flavours flavors
  • Has resistance to high cooking temperatures, low post-acidification, and some resistance to salt.
  • The carbon dioxide by-product is responsible for forming the holes or ‘eyes’ in the cheese.
  • The use of Lactobacillus helveticus is recommended for hard cooked cheeses.
Weight 0.015 kg

small, large


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