Overview
Tea seed extract is derived from the seeds of Camellia oleifera, a plant native to East Asia. Rich in saponins, polyphenols, and unsaturated fatty acids, it has been traditionally used in Chinese medicine and culinary practices. Modern applications leverage its bioactive compounds for antioxidant and skin-conditioning effects. The extract is produced through solvent extraction or cold pressing, with variations in purity and composition depending on processing methods. Its versatility makes it a valued ingredient in both cosmetic formulations and functional foods.
Physical and Chemical Properties
The extract’s chemical profile includes tea saponins (10–80%), oleic acid, and catechins, contributing to its emulsifying and free-radical-scavenging capabilities. Its viscosity and color depend on concentration, with liquid forms being easier to handle in industrial mixing processes. Key stability considerations include sensitivity to oxidation, necessitating airtight packaging and antioxidants like vitamin E in formulations. pH stability ranges from 4 to 8, making it compatible with most cosmetic and food matrices.
Main Applications
In cosmetics, tea seed extract functions as a natural surfactant in cleansers and a moisturizing agent in creams. Its anti-inflammatory properties are utilized in acne treatments and scalp care products. The food industry incorporates it as a preservative and flavor enhancer, particularly in health supplements. Industrial uses include bio-lubricants and pesticide adjuvants, where its biodegradability is advantageous. Emerging research explores its potential in cholesterol-lowering pharmaceuticals.
Safety and Storage
While non-toxic, undiluted extracts may cause skin irritation in sensitive individuals. Suppliers typically provide material safety data sheets (MSDS) with recommended protective measures during handling. Storage at temperatures below 25°C (77°F) preserves efficacy. Bulk shipments require corrosion-resistant containers to prevent degradation. For powdered forms, silica gel desiccants are added to packaging to mitigate moisture absorption.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 22716 (cosmetic) or FSSC 22000 (food) certifications. Key specifications to request include saponin concentration, solvent residues (e.g., ethanol ≤500ppm), and heavy metal contamination reports. MOQs commonly start at 25kg for samples, with price breaks at 500kg+ volumes. Due to seasonal harvests, forward contracts are advisable to ensure steady supply. Third-party lab testing for active compounds is recommended for quality assurance.
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