Trends in Plant- and Microbial-Derived Protein Hydrolysates for Cell Culture: Toward Reduced Serum and Sustainable Media Development
🔬 Authors: Arian Amirvaresi, Reza Ovissipour
🏛 Institution: Virginia Tech Seafood AREC, USA (bioRxiv, 2024)
Abstract
Reducing the dependency on fetal bovine serum (FBS) has become a major focus in cell culture and bioproduction. Plant- and microbial-derived protein hydrolysates are emerging as promising supplements to provide peptides, amino acids, and growth-supportive factors for cells cultivated under low-serum or serum-free conditions.
This study evaluated different types of hydrolysates in a zebrafish embryonic stem cell model, examining cell proliferation, morphology, and membrane integrity under various serum concentrations.
🔍 Key Findings
✅ Low concentrations promote cell growth: Protein hydrolysates at 0.001–0.1 mg/mL enhanced cell proliferation and showed anti-apoptotic effects.
✅ High concentrations may inhibit growth: 1–10 mg/mL hydrolysate levels reduced cell viability and triggered apoptosis.
✅ Serum can be reduced by up to 90%: Combining low hydrolysate concentrations with 1–2.5% serum maintained similar performance as conventional 10% FBS media.
✅ Amino acid balance is key: Hydrolysates rich in glutamic acid, alanine, glycine, and branched-chain amino acids supported higher cell vitality.
✅ Lower carbon footprint potential: Due to the very low inclusion rate (0.01 mg/mL), total media carbon emissions could be up to 90% lower than those of 10% FBS formulations.
💡 STBIO Perspective
At STBIO, we continuously monitor global developments in low-serum and sustainable cell culture technologies. While we do not currently produce serum-free media, we supply and distribute low-endotoxin protein hydrolysates and other specialized ingredients to support R&D teams exploring serum-reduction strategies.
Different sources and hydrolysis degrees (DH) can significantly influence performance across cell lines such as Vero, CHO, and HEK. Through reliable sourcing and consistent quality control, STBIO aims to provide traceable, consistent, and research-grade hydrolysates to help partners advance their media optimization projects.
📎 Original Study
Evaluation of Plant- and Microbial-Derived Protein Hydrolysates as Substitutes for Fetal Bovine Serum in Cultivated Seafood Cell Culture Media
Arian Amirvaresi, Reza Ovissipour
Virginia Tech Seafood AREC, USA
bioRxiv, 2024. DOI: 10.1101/2024.03.27.587063
This article is a preprint and has not been certified by peer review.
📩 Learn More
For technical datasheets, low-endotoxin hydrolysate specifications, or sample requests, please CONTACT STBIO.
This article is provided for academic and technical information purposes only and does not constitute product performance or medical claims. The referenced study is a preprint (not peer-reviewed), and its conclusions may be subject to change after formal review.