Frequently Asked Questions

• QWhat are the available grades of yeast extract and how do they differ?
  Yeast extract is available in three grades: Industrial Grade, Pharmaceutical Grade, and Reagent Grade. They differ primarily in amino nitrogen content (≥2.5%, ≥3.0%, and ≥3.5% respectively) and solubility — industrial grade is slightly soluble, pharmaceutical grade achieves complete lysis, and reagent grade provides a pellucid solution.
• QCan the product specifications be customized to meet specific requirements?
  Yes. While the physicochemical index represents the general specification, the product can be customized according to individual customer requirements, including tailored parameter ranges and packaging options.
• QHow should yeast extract be prepared before use in fermentation?
  Yeast extract should be fully dissolved and sterilized before use to ensure product integrity and prevent contamination in fermentation processes.
• QWhat are the main application areas of yeast extract?
  Yeast extract is widely used in industrial fermentation fields including the production of biomedicines, amino acids, vitamins, organic acids, enzyme preparations, probiotics, biological preservatives, bio-pesticides, and microecological products. It acts as an essential nutritional supplement for microbial growth.
• QWhat packaging options are available for yeast extract?
  Standard packaging includes Compound Paper Bags at 25kg/bag and Cardboard Buckets. Reagent-grade products are packaged in 250g plastic bottles. Custom packaging quantities and OEM packaging are also available upon request.
• QWhat is the acceptable pH range for yeast extract in a 2% solution?
  The acceptable pH range for yeast extract in a 2% solution is 4.5 to 7.5, which applies across all three grades: Industrial, Pharmaceutical, and Reagent.