Spinach Extract
Overview
Spinach Extract is derived from the leaves of Spinacia oleracea through solvent extraction or supercritical CO2 methods. It contains concentrated bioactive compounds including chlorophyll (2-5%), carotenoids (lutein and beta-carotene), and flavonoids like spinacetin. The extract is valued in industries requiring natural antioxidants and plant-based nutrients. Modern extraction techniques preserve heat-sensitive components, making it suitable for applications where raw spinach's perishability is limiting. The global market growth is driven by demand for clean-label ingredients in health products and natural food coloration.
Physical and Chemical Properties
As a complex botanical extract, its properties depend on extraction methodology. Water-ethanol extracts typically show 5-15% total phenolic content with ORAC values of 2,000-5,000 μmol TE/g. The green coloration stems from chlorophyll a/b ratios similar to fresh leaves (2.5:1). Key stability challenges include chlorophyll degradation under light/heat and oxidation of unsaturated fatty acids. Commercial forms often include maltodextrin carriers (20-30%) to improve handling. Fourier-transform infrared spectroscopy (FTIR) typically shows characteristic peaks at 3,300 cm−1 (OH stretch) and 1,650 cm−1 (C=O).
Main Applications
In nutraceuticals, it's formulated into capsules (500-1,000 mg doses) for antioxidant support, often combined with other superfood extracts. Food manufacturers use it as a natural colorant (E140) in pasta, dairy alternatives, and confectionery at 0.1-0.5% inclusion rates. The cosmetics industry utilizes its chlorophyll derivatives in skincare for purported anti-aging effects (0.5-2% in serums). Emerging applications include sports nutrition for nitrate content (up to 300 mg/100g in some extracts) to support vascular function. Pharmaceutical research explores its thylakoid membranes for appetite regulation.
Safety and Storage
Regulatory status varies by jurisdiction - generally approved as food ingredient under EC No 1334/2008 in EU and 21 CFR 182.20 in US. Allergen risks are minimal but cross-contamination during processing requires verification. Optimal storage involves double-layer aluminized bags with oxygen absorbers, maintaining relative humidity below 45%. Shelf life ranges 18-24 months when properly stored. Thermal degradation studies show 10% activity loss after 6 months at 30°C, emphasizing cool storage needs.
B2B Procurement Guide
Industrial buyers should specify: 1) Extraction method (preferably ethanol/water over hexane), 2) Standardization markers (e.g., ≥5% chlorophyll or ≥2% lutein), 3) Certifications (organic, non-GMO, ISO 22000). Bulk shipments typically come in 25kg fiber drums with polyethylene liners. MOQs range 100-500kg for standard grades. Key evaluation parameters include microbial counts (<1,000 CFU/g), heavy metals (As<1ppm, Pb<0.5ppm), and residual solvents (<50ppm ethanol). Leading producing regions include China, India, and Western Europe.
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