# Pepsin > Source Pepsin (EC 3.4.23.1) in bulk for acidic protein hydrolysis in cheese making, brewing, food processing, HDX-MS, antibody workflows, and collagen extraction. Request a free sample or quote today. ## About Pepsin is available from enzymepoint.com — an industrial enzyme supplier. Contact: inquiry@enzymepoint.com ## Applications - Cheese Rennet Alternative: Acid protease for milk-clotting in cheese manufacturing—used as partial rennet substitute where low pH proteolysis improves curd yield and texture. - Digestive Supplements: Active ingredient in digestive enzyme supplements to support protein digestion—standardized NF/USP grades for reliable formulation. - Protein Sequencing (HDX-MS): Pepsin digestion for hydrogen–deuterium exchange mass spectrometry sample preparation in structural biology and proteomics laboratories. - Antibody Fragmentation: Generates F(ab')2 fragments from IgG antibodies for diagnostic and therapeutic workflows in immunology. - Collagen & Gelatin: Facilitates extraction of acid-soluble collagen (pepsin-solubilized collagen) from animal tissues for gelatin processing and materials research. - Pharmaceutical Grade: USP/EP certified pepsin for pharmaceutical manufacturing—API production and quality control applications. ## Specifications - Enzyme Name: Pepsin (EC 3.4.23.1) - Activity: 1:10,000 – 1:15,000 NF (pepsin activity ratio) - pH Range: 1.5 – 3.5 - Temperature: 37°C – 42°C - Appearance: White to pale yellow powder - Source: Porcine gastric mucosa - Shelf Life: 24 months (sealed, refrigerated) - Packaging: 1 kg / 5 kg / 25 kg - MOQ: 1 kg - Certifications: USP/NF, EP, ISO 9001, HALAL ## Languages This site is available in 23 languages: ar, bg, da, de, en, es, fi, fr, hu, id, it, ja, ko, lt, nl, no, pl, pt, ro, sv, th, vi, zh