Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
Review flags: AWAITING_SEMANTIC_VALIDATION
Micellar casein protein is a slow-digesting milk protein that forms gel-like structures in the stomach, providing sustained amino acid release for up to 7 hours. The intact casein micelles resist rapid enzymatic breakdown, making it ideal for prolonged muscle protein synthesis during fasting periods.
Reported Benefits (Provisional)
Origin & History
Casein protein is derived from milk and is a slow-digesting protein. It is produced by separating casein from whey in milk through a filtration process.
Research Narrative (Provisional)
Numerous studies, including randomized controlled trials, have shown that casein protein supports muscle growth and recovery when consumed regularly.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Per 100g of micellar casein powder: Protein: 80–85g (predominantly alpha-s1, alpha-s2, beta-, and kappa-casein fractions arranged in native micellar structure); Fat: 1–3g; Carbohydrates: 2–5g (primarily lactose); Calories: ~350–370 kcal. Essential amino acids per 100g protein: Leucine ~8–9g, Isoleucine ~5–5.5g, Valine ~6–6.5g, Lysine ~7.5–8g, Threonine ~4–4.5g, Methionine ~2.5–3g, Phenylalanine ~4.5–5g, Tryptophan ~1.2–1.5g, Histidine ~2.5–3g. Glutamine/glutamic acid: ~20–22g per 100g protein. Bioactive peptides: Casein phosphopeptides (CPPs, ~2–5% of total casein), casomorphins (beta-casomorphin-7), glycomacropeptide (GMP, derived from kappa-casein). Minerals: Calcium ~800–1200mg (high due to calcium-phosphate nanoclusters within the micellar structure; bioavailability enhanced by CPPs which chelate calcium and prevent precipitation in the gut), Phosphorus ~500–700mg, Magnesium ~10–15mg, Sodium ~50–200mg (varies by processing), Potassium ~100–200mg, Zinc ~0.5–1mg. Vitamins: Vitamin A ~50–100 IU (from residual milk fat), trace B-vitamins including B2 (riboflavin) ~0.1–0.3mg, B12 ~0.5–1.5µg, Niacin (B3) ~0.1–0.2mg, B6 ~0.03–0.05mg. PDCAAS (Protein Digestibility Corrected Amino Acid Score): 1.00, indicating complete protein with excellent digestibility. DIAAS (Digestible Indispensable Amino Acid Score): ~1.18–1.20, reflecting superior ileal amino acid digestibility. Key bioavailability notes: Micellar casein forms a gel-like clot in the stomach at acidic pH, resulting in slow gastric emptying and prolonged amino acid release over 5–7 hours (compared to ~1–2 hours for whey), making it ideal for sustained aminoacidemia. Casein phosphopeptides enhance intestinal absorption of calcium, iron, and zinc by maintaining mineral solubility at intestinal pH. Contains trace amounts of conjugated linoleic acid (CLA, ~5–15mg per 100g) from residual milk fat. Lactose content is low but present (~2–5g/100g), which may affect individuals with lactose intolerance.
Reported Mechanism (Provisional)
Micellar casein forms gel-like clots in the acidic stomach environment due to its intact casein micelle structure, which slows gastric emptying and proteolytic enzyme access. This sustained release maintains elevated plasma amino acid levels, particularly leucine, for 6-7 hours, supporting continuous activation of mTOR signaling pathways. The slow digestion also stimulates incretin hormones like GLP-1 and CCK, which enhance satiety and reduce appetite.
Clinical Narrative (Provisional)
A randomized controlled trial with 48 resistance-trained men showed micellar casein consumed before bed increased overnight muscle protein synthesis by 22% compared to placebo. A 12-week study of 36 overweight adults found 27g daily micellar casein reduced body fat by 3.8% while preserving lean mass during caloric restriction. Appetite studies demonstrate 20-30g doses increase satiety ratings by 15-25% for up to 4 hours post-consumption. Most evidence comes from small to moderate-sized studies with healthy populations.
Also Known As
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