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Defects - Specific, Blue Mould Cheeses

In addition to the General Defects webpages, Penicillium rocqueforti "blue mould" cheeses (such as Roquefort & Stilton) can have their own special set of problems. This webpage is divided into the following topics:

Body - Mould Development, Poor

Description

  • Body of cheese has little blue mould development.

Causes

  • Inadequate amount of cavities in body of cheese in which blue mould to grow, causes of which are not enough milling, cheese pressed too much, or moisture content of cheese it too high not allowing cavities to stay open.
  • Inadequate piercing of cheese not enabling air to enter body of cheese to activate blue mould.
  • Pencillium rocqueforti mould dead.

Smell - Excessive, Early

Description

  • The aroma of cheese becomes excessive before correct ripening/aging time.

Causes

  • Ripening/aging room humidity is too high, reduce.

Surface - Mould Development, Slow

Description

  • Blue mould takes excessive time to develop on surface of cheese.

Causes

  • Ripening/aging room humidity is too low, increase.
  • Moisture content of cheese is too low, stir less or cook for shorter time or at lower temperature, or cut curds larger.
  • Very weak Penicillium candidum innoculant.