Lactoglobulins, beta-
CAS: 8378-23-2
Category: Peptides
| Purity | Research Grade ≥90%; Biochemical Grade ≥95%; High-Purity Grade ≥98% |
| Molecular Formula | C141H224N40O46S3 |
| Molecular Weight | 18400 |
| Appearance | White to light yellow lyophilized powder or amorphous solid; odorless or with a slight characteristic protein odor; soluble in water to form a clear to slightly opalescent solution. |
| Packaging | 1 g/vial, 5 g/vial, 10 g/bottle, or customized sterile sealed containers with moisture-proof packaging. |
| Testing Indicators | Appearance — Visual inspection; Protein content — Kjeldahl nitrogen determination (AOAC 991.20) or Bradford assay; Purity — SDS-PAGE electrophoresis; Molecular weight — MALDI-TOF mass spectrometry or SDS-PAGE; Identification — FTIR spectroscopy and peptide mapping by LC-MS/MS; Amino acid composition — HPLC amino acid analyzer; Moisture — Karl Fischer titration; Microbial limits — Plate count method; Endotoxin — Limulus Amebocyte Lysate (LAL) test for biochemical applications. |
| Storage Notes | Store in a cool, dry, and well-ventilated place. Recommended storage at 2-8°C for short-term storage and -20°C or below for long-term storage. Protect from moisture, direct sunlight, and repeated freeze-thaw cycles. Keep container tightly sealed after opening to prevent contamination and degradation. |
| Lead Time | 10 days |
Beta-lactoglobulin is a major whey protein isolated from milk and belongs to the lipocalin family. It is widely used as a biochemical research reagent, nutritional protein ingredient, food science research material, and raw material for studying protein structure, allergenicity, and functional food applications. It is also used in pharmaceutical and biotechnology research as a model protein for protein folding and binding studies.