Overview
Vine tea powder is derived from the leaves of Ampelopsis grossedentata, a climbing plant indigenous to China's Hunan and Guangxi regions. Traditionally used in Chinese folk medicine, it gained modern popularity due to its high concentration of bioactive flavonoids, particularly dihydromyricetin (DHM). The powder is produced by drying and finely grinding the leaves, preserving its natural compounds. Unlike conventional teas, vine tea is caffeine-free and valued for its potential health benefits, including liver protection and metabolic support. Its slightly bitter taste and aromatic profile make it suitable for blending with other herbal ingredients in functional beverages and supplements.
Physical and Chemical Properties
Vine tea powder exhibits a distinct greenish-yellow hue and fine, uniform particle size, optimized for solubility. Its primary active component, DHM, accounts for its antioxidant capacity, with commercial grades typically containing 20-50% flavonoids. The powder is hygroscopic, requiring airtight packaging to prevent clumping. Thermal stability studies show that its bioactive compounds remain intact below 80°C, making it suitable for hot water extraction. Analytical methods like HPLC are used to quantify flavonoid content, a critical metric for quality assessment in B2B transactions. The powder's mild acidity (pH ~5.5-6.5) ensures compatibility with most food and supplement formulations.
Main Applications
In the nutraceutical industry, vine tea powder is incorporated into capsules and tablets targeting oxidative stress and liver health. Its anti-inflammatory properties also make it a candidate for sports recovery products. Food manufacturers use it to fortify teas, energy bars, and functional chocolates. The cosmetics sector utilizes vine tea extract in anti-aging serums and creams, leveraging its collagen-protective effects. Some pharmaceutical applications are under research, including adjunct therapies for metabolic syndrome. In B2B markets, demand is highest from supplement brands seeking clean-label, plant-based ingredients with clinically studied benefits.
Safety and Storage
Vine tea powder is non-toxic at recommended doses, with LD50 studies in rodents exceeding 5,000 mg/kg. However, excessive intake may interact with blood-thinning medications due to its flavonoid content. Allergen risks are low but should be disclosed for compliance with food safety regulations. Proper storage involves moisture-proof containers with oxygen absorbers to extend shelf life (typically 24 months). Suppliers often provide COAs (Certificates of Analysis) confirming the absence of heavy metals and pesticides. Industrial buyers should request stability data for specific applications, especially for products exposed to high temperatures or humidity during manufacturing.
B2B Procurement Guide
When sourcing vine tea powder, prioritize suppliers with vertical integration (owning cultivation bases) to ensure traceability. Key procurement metrics include flavonoid potency (tested via HPLC), microbial counts (<1,000 CFU/g), and residual solvent levels if ethanol extraction is used. MOQs (Minimum Order Quantities) typically start at 25 kg for standard grades, with private-label packaging available. Negotiate pricing based on annual volume commitments; bulk purchases (500+ kg) can reduce costs by 15-20%. Certifications like USDA Organic or EU Novel Food compliance add premium value. Sample testing for solubility and flavor profile is recommended before large-scale orders.
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