Advantages of Cystine Disodium, Tyrosine Disodium, and Cystine Dihydrochloride in Media Preparation

In the preparation of mammalian cell culture media, L-Tyrosine and L-Cystine are indispensable. However, the free forms of these two amino acids have extremely low solubility in water. To solve this pain point, the industry widely adopts their salt forms.

1. Breaking the Solubility Bottleneck for High-Concentration Feeds

• L-Tyrosine Disodium Salt: Through salt formation, its solubility in water is increased dozens of times.
• L-Cystine Disodium and Dihydrochloride: Salt formation significantly improves solubility in either acidic or alkaline conditions.

High solubility means that smaller volumes of feed can be added to achieve the same nutrient concentration, avoiding premature reactor volume expansion.

2. Simplifying Preparation Process and Reducing Contamination Risk

Using salt-form raw materials can significantly simplify dissolution steps, shorten preparation time, and improve batch stability in industrial production.