# Chicken Sternum Collagen Type II

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/chicken-sternum-collagen-type-ii
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-25
**Evidence Score:** 2 / 10
**Category:** Protein
**Also Known As:** Gallus gallus sternum collagen type II, Chicken cartilage collagen, Avian type II collagen, Poultry sternum extract, CTC-II, Chicken breastbone collagen, Sternal cartilage collagen

## Overview

Chicken sternum collagen type II is a native, undenatured collagen extracted from the cartilage of chicken breastbones, rich in type II collagen fibrils, proteoglycans, and glycosaminoglycans like chondroitin sulfate. It is studied primarily for its structural properties and potential oral tolerance mechanisms involving regulatory [T-cell](/ingredients/condition/immune-support) modulation in joint tissue.

## Health Benefits

• No clinical health benefits documented - available research focuses only on extraction methods
• Structural integrity preserved - extraction methods maintain intermolecular crosslinks
• Enhanced functional properties - ultrasound treatment improves water absorption and emulsifying properties
• Improved amino acid profile - ultrasound processing significantly enhances amino acid composition
• Water-soluble formulation available - patented low-temperature extraction preserves active epitopes

## Mechanism of Action

Undenatured type II collagen from chicken sternum is hypothesized to act via oral tolerization, where small doses interact with Peyer's patches in the gut to stimulate regulatory [T-cell](/ingredients/condition/immune-support)s (Tregs) that suppress [inflammatory](/ingredients/condition/inflammation) cytokines such as IL-1β and TNF-α targeting cartilage. The preserved intermolecular crosslinks, including hydroxylysyl pyridinoline, maintain the triple-helix structure critical for this immune interaction. Associated glycosaminoglycans such as chondroitin sulfate may further modulate aggrecan synthesis in chondrocytes via TGF-β signaling pathways.

## Clinical Summary

No published clinical trials have specifically isolated chicken sternum collagen type II as a standalone intervention to measure therapeutic outcomes in humans. Available peer-reviewed research is limited to extraction methodology studies, examining how techniques such as ultrasound-assisted processing and enzymatic hydrolysis affect yield, crosslink density, water-holding capacity, and emulsification properties. Broader clinical evidence for undenatured type II collagen in [joint health](/ingredients/condition/inflammation) (not specific to chicken sternum source) includes small randomized trials of 40–166 participants showing modest reductions in WOMAC and VAS pain scores, but these studies typically use commercially processed UC-II formulations. Evidence specifically attributing efficacy to the chicken sternum source over other type II collagen origins remains absent.

## Nutritional Profile

Chicken sternum collagen type II is a highly specialized structural protein with a distinct nutritional and biochemical profile. Protein content is extremely high, typically comprising 65–85% of dry weight, dominated by the characteristic collagen amino acid triplet repeat (Gly-X-Y). Glycine is the most abundant amino acid at approximately 330–350 residues per 1000 amino acid residues (~33% of total amino acid composition). Proline and hydroxyproline collectively account for approximately 20–25% of total amino acids, with hydroxyproline serving as a unique collagen biomarker (~90–100 mg/g dry protein). Alanine contributes roughly 10–12% of residues. Arginine, glutamic acid, and aspartic acid are present at 3–6% each. Unlike complete dietary proteins, chicken sternum collagen type II lacks adequate tryptophan (near zero), making it an incomplete protein source by conventional standards. Fat content is negligible (<1–2% dry weight), with trace phospholipids from residual cartilage matrix. Carbohydrate content is minimal (<1%), though glycosaminoglycan remnants (chondroitin sulfate, hyaluronic acid) may persist at low levels (1–5 mg/g) depending on extraction method, contributing minor sulfur-containing compounds. Hydroxyproline bioavailability post-[digestion](/ingredients/condition/gut-health) is moderate; it is absorbed but not efficiently re-incorporated into human collagen, primarily excreted renally. Ultrasound-assisted extraction demonstrably increases free amino acid availability and improves water-holding capacity (up to 3.5–4.5 g water/g protein), enhancing functional bioavailability. Calcium and phosphorus content reflects residual bone/cartilage mineral contamination, typically 0.1–0.5% calcium and 0.05–0.2% phosphorus by dry weight. Iron, zinc, and magnesium are present only in trace quantities (<50 ppm each). No significant vitamins are retained. Collagen crosslinks (pyridinoline, deoxypyridinoline) are preserved in native extraction, contributing structural but not caloric value. Caloric density approximates 3.5–3.8 kcal/g dry weight based on protein and trace fat content.

## Dosage & Preparation

No clinically studied dosage ranges for human supplementation are available in the research. The sources only discuss laboratory extraction parameters such as pepsin concentration and treatment duration. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Chicken sternum collagen type II is generally considered safe for most adults when consumed in food-equivalent amounts, with no serious adverse events reported in extraction or food-science literature. Individuals with poultry allergies should avoid this ingredient due to potential cross-reactivity with chicken-derived proteins. No well-documented drug interactions exist, though theoretical caution is warranted with immunosuppressants given the proposed Treg-modulating mechanism. Safety in pregnancy and lactation has not been evaluated in clinical studies, so use is not recommended without medical guidance.

## Scientific Research

No human clinical trials, randomized controlled trials, or meta-analyses were found in the available research. The provided sources focus exclusively on extraction methodology and chemical characterization rather than therapeutic outcomes in human subjects.

## Historical & Cultural Context

No information about historical or traditional medicinal use of chicken sternum collagen type II is provided in the available research sources.

## Synergistic Combinations

Other collagen types, vitamin C, hyaluronic acid, glucosamine, chondroitin

## Frequently Asked Questions

### What is chicken sternum collagen type II and how is it different from other collagens?

Chicken sternum collagen type II is a native, triple-helical collagen extracted specifically from the cartilage of chicken breastbones, distinct from type I collagen found in skin and bones. Unlike hydrolyzed collagen peptides, the undenatured form preserves its triple-helix structure and associated proteoglycans such as chondroitin sulfate, which is theorized to be important for its oral tolerization mechanism. Type I collagen supports skin and connective tissue, while type II collagen is the primary structural protein of articular cartilage.

### Does chicken sternum collagen type II help with joint pain?

There is no clinical trial evidence specifically testing chicken sternum-sourced collagen type II for joint pain relief as an isolated ingredient. Broader research on undenatured type II collagen (UC-II) in osteoarthritis and rheumatoid arthritis suggests modest benefits at doses of 10–40 mg/day, with one 90-day trial of 166 participants showing a 26% reduction in WOMAC scores. Whether the chicken sternum source performs equivalently to other type II collagen sources has not been directly compared in human trials.

### How is collagen extracted from chicken sternum?

Chicken sternum collagen type II is extracted using methods such as acid solubilization, pepsin digestion, or ultrasound-assisted extraction, which is a newer technique shown to improve yield and functional properties. Ultrasound treatment has been documented to enhance water absorption capacity and emulsifying activity index while maintaining the integrity of intermolecular crosslinks like hydroxylysyl pyridinoline. The goal of these extraction methods is to preserve the native triple-helix conformation, which is critical for biological activity.

### Is chicken sternum collagen type II safe for people with chicken allergies?

Individuals with confirmed poultry or chicken allergies should avoid chicken sternum collagen type II due to the risk of allergic cross-reactivity with residual chicken proteins present in the extract. Even highly purified collagen preparations may contain trace amounts of non-collagen chicken proteins that can trigger IgE-mediated responses. Anyone with a known poultry allergy should consult an allergist before considering any chicken-derived supplement.

### What dose of chicken sternum collagen type II should I take?

No established clinical dosing guideline exists specifically for chicken sternum collagen type II as a supplement. Studies on undenatured type II collagen more broadly have used doses ranging from 10 mg/day (for oral tolerization protocols) to 40 mg/day in joint health trials, with the lower 10 mg dose thought to be sufficient to engage Peyer's patch-mediated Treg activation. Until human trials specific to the chicken sternum source are conducted, no evidence-based dosage recommendation can be made.

### How does ultrasound processing improve chicken sternum collagen type II?

Ultrasound treatment enhances the functional properties of chicken sternum collagen type II by improving its water absorption capacity and emulsifying abilities, making it more effective in formulations. This processing method also significantly upgrades the amino acid profile of the collagen, resulting in a more nutritionally dense end product. The ultrasonic treatment preserves the structural integrity of the collagen by maintaining its important intermolecular crosslinks.

### Is chicken sternum collagen type II suitable for vegetarians or vegans?

No, chicken sternum collagen type II is not suitable for vegetarians or vegans, as it is derived directly from chicken bone tissue and is an animal-derived ingredient. Those following plant-based diets should look for alternative collagen sources or plant-based collagen support supplements instead. This ingredient is exclusively for consumers who include animal products in their diet.

### What is the difference between chicken sternum collagen and collagen from other chicken parts?

Chicken sternum collagen type II is specifically extracted from the sternum bone, which contains particularly high concentrations of native type II collagen compared to other chicken skeletal parts. The sternum's structural composition makes it an ideal source for maintaining collagen's natural intermolecular crosslinks during extraction, preserving its bioactive properties. This targeted sourcing results in a collagen product with superior structural integrity compared to collagen extracted from less cartilage-rich chicken bones.

---

*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
*License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*