Cuttlebone[2]
Overview
Cuttlebone is the internal shell of cuttlefish (order Sepiida), composed mainly of aragonite, a crystalline form of calcium carbonate. Known as Haipiaoxiao (海螵蛸) in traditional Chinese medicine, it has been used for over 2,000 years to treat gastrointestinal disorders, bleeding, and ulcers. Its porous structure and high mineral content also make it a popular calcium supplement for birds, reptiles, and aquarium inhabitants. Today, cuttlebone is harvested from cuttlefish byproducts, cleaned, and sun-dried for commercial use. While wild-sourced products dominate, some regions farm cuttlefish specifically for their shells. The material is biodegradable and non-toxic, aligning with sustainable and eco-friendly trends.
Product Features
Cuttlebone's unique honeycomb structure provides exceptional buoyancy for cuttlefish and translates into practical benefits for human use. Its high porosity (up to 90% void space) allows gradual calcium release when dissolved in water or ingested. The material is lightweight (density ~0.6–1.0 g/cm³) yet rigid enough for polishing metals or crafting molds. Chemically, it contains 85–90% calcium carbonate, 5–7% organic matrix (conchiolin), and trace minerals like magnesium, zinc, and strontium. This composition supports its dual roles in TCM (astringent properties) and animal nutrition (mineral supplementation). Unlike synthetic alternatives, natural cuttlebone is free from artificial additives, appealing to organic markets.
Main Uses
In traditional Chinese medicine, powdered cuttlebone (usually processed by roasting) is prescribed to neutralize stomach acid, heal ulcers, and stop bleeding. Modern TCM formulations combine it with herbs like astragalus for qi-regulating tonics. Dosages typically range from 5–10g, adjusted based on the patient’s condition. For pets, cuttlebone is wired inside birdcages or placed in terrariums, allowing animals to self-regulate calcium intake—critical for avian bone health and reptile egg development. Industrially, its abrasive texture suits jewelry polishing and precision casting. Artists value it for silverpoint drawing and as a mold material due to its fine, carvable surface.
Culture and Development
Cuttlebone’s medicinal use was first documented in the Han Dynasty classic 'Shennong Bencao Jing,' where it was classified as a mid-tier herb for its hemostatic effects. Later, Ming Dynasty texts like 'Compendium of Materia Medica' (Bencao Gangmu) expanded its applications to include wound healing and gynecological treatments. Global demand surged in the 1980s with the exotic pet trade, leading to standardized processing (e.g., UV sterilization, size grading). Today, China and Mediterranean countries are primary producers, with annual yields exceeding 10,000 metric tons combined. Innovations include flavored cuttlebones (e.g., honey-infused for pets) and micronized powders for nutraceutical capsules, broadening market appeal.
B2B Procurement Guide
Bulk buyers should verify sourcing practices—wild-caught cuttlebone must comply with local fisheries regulations, while farmed options may offer more consistent quality. Key specifications include calcium content (≥85%), moisture (≤8%), and absence of sand/foreign matter. Industrial-grade pieces should have uniform hardness (Mohs 3–4). Pricing depends on processing: whole pieces command premiums (e.g., $3–5/kg for large, clean shells), while fragments or powders cost less ($1–2/kg). For TCM applications, look for GMP-certified processors. Sea freight is cost-effective but requires moisture-proof packaging to prevent degradation. Spot contracts are common due to seasonal catch fluctuations.
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