How to extract chlorophyll powder?

Can a home "kitchen experiment" produce food-grade chlorophyll powder?

 

Extraction is possible, but only a crude product is obtained, leaving three gaps between it and food/pharmaceutical-grade chlorophyll powder.

Raw material gap: Supermarket spinach contains only 0.6% chlorophyll, 90% of which is trapped within the cell walls. In the laboratory, powdered silkworm excrement (mulberry leaves and young silkworm feces) vacuum-dried at 45°C has a chlorophyll content of 1.8%, doubling the yield.

Solvent gap: 95% ethanol, commonly used in kitchens, only extracts 60% chlorophyll. A factory-grade extraction using a 1:1 mixture of acetone and ethanol at 40°C, followed by two cycles, yields >92% chlorophyll. The acetone is then fully recovered through vacuum concentration, resulting in a solvent residue of ≤30 ppm in the finished product, far below the national standard of 5,000 ppm.

Purity gap – Kitchen filtration only removes fiber, but lutein and carotene remain, resulting in a yellowish powder. Factories use a three-step process: petroleum ether decarotenoidization, saponification, and copper substitution. This reduces impurities from 35% to less than 3%, resulting in a dark green, metallic-luster sodium copper chlorophyll powder with an aqueous solution transmittance of ≥96%. This is truly "high-purity chlorophyll powder" suitable for inclusion in beverages, toothpaste, and capsules.

 

If you want stable, compliant, and marketable chlorophyll powder, you should contact a professional manufacturer such as sost biotech.

 

Why is copper substitution crucial to chlorophyll powder stability?

 

The copper substitution step directly determines the color value, light resistance, heat resistance, and shelf life of the finished product.

The core of natural chlorophyll is magnesium porphyrin. Magnesium ions are easily shed in acidic conditions, light, and high temperatures, resulting in a brownish-black pheophytin. After seven days of light exposure at 60°C, 50% of the chlorophyll is lost. In this process, magnesium ions are replaced with copper ions to form a copper-porphyrin complex, increasing the stability constant by 1000-fold. Acid resistance is increased from pH 6 to pH 2, and temperature resistance is increased from 60°C to 95°C. Even after 30 days of illumination, the color value retention remains >90%.

 

Copper substitution processes include two approaches: saponification followed by copper substitution and copper substitution followed by saponification.

 

Traditional saponification-first: Chlorophyll is easily oxidized upon contact with alkali, requiring the pH to be lowered to 2 during copper substitution, resulting in significant chlorophyll loss and a yield of 3.8%.

Emerging copper substitution-first: Magnesium is first removed by acidification at pH 3, followed by immediate copper substitution to form stable copper chlorophyll. Saponification to form a salt yields 4.46%, increasing purity by 8%, and saving 20% ​​of solvent.

 

The copper substitution endpoint is determined by the colorlessness of the petroleum ether layer, which is faster and more cost-effective than HPLC. Residual copper ions are titrated with 0.1 mol/L EDTA to within 10 ppm, far below the EU limit of 200 ppm, completely eliminating the anxiety of excessive copper.

 

Copper substitution is the core technology that determines whether chlorophyll powder can maintain its emerald green color for long-term use in beverages, toothpaste, and baking.

 

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How can i buy sodium copper chlorophyllin?

 

If you're looking for sodium copper chlorophyllin powder with high color value, low residue, and complete certifications, please contact the source factory directly, SOST Biotech.

 

Annual production capacity: 120 tons, 80% of which is export-oriented.

We have passed FDA, ISO22000, HALAL, and Kosher on-site audits for eight consecutive years. We provide complete documentation including GMP, CEP, COA, and MSDS.

We offer 1 kg packaging, OEM labeling, and custom formulations.

Get instant quotes, and discounts for large quantities.

 

Contact Email:info@sostherbusa.com