Product Description
Basic Information
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Chemical Name and Structure: Fruit green powder is a composite food pigment. Its main component is sodium copper chlorophyllin, along with other auxiliary ingredients. Sodium copper chlorophyllin is a semi-synthetic pigment. Its structure is based on chlorophyll, where the magnesium ions in the chlorophyll molecule are replaced by copper ions and then undergo a series of chemical modifications to form a more stable structure. Structurally, it contains a porphyrin ring structure, which is the key part responsible for its green color.
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Appearance and Properties: Fruit green powder usually appears in powder form, with a bright green color that is uniformly vivid. The powder is fine in texture and free of visible impurities to the naked eye.
Physical and Chemical Properties
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Solubility: Fruit green powder has good solubility in water and can quickly dissolve to form a uniform green solution. During the dissolving process, no complicated operations are generally required, and gentle stirring is usually sufficient. It also has a certain solubility in some polar organic solvents such as ethanol, but its solubility in non-polar organic solvents is relatively poor.
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Stability: Under acidic conditions (pH < 6), the stability of fruit green powder is relatively weak, and phenomena such as color fading or precipitation may occur. However, in a neutral to alkaline environment (pH 7 - 10), it has better stability and can maintain its vivid green color. When exposed to light and high-temperature environments for a long time, the color may gradually fade. Therefore, it is necessary to avoid strong light irradiation and high-temperature environments as much as possible during storage and use.
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Spectral Characteristics: The absorption spectrum of fruit green powder in the visible light region is mainly concentrated in the blue and red light regions, and its maximum absorption wavelengths are approximately between 400 - 450 nm and 650 - 670 nm. This enables it to be quantitatively and qualitatively analyzed by specific wavelengths in analytical methods such as spectrophotometry.
Sources and Production Methods
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Synthesis Method: Mainly through the chemical synthesis of sodium copper chlorophyllin. Firstly, chlorophyll is extracted from plants (such as silkworm excrement, alfalfa, etc.). Then, the magnesium ions in the chlorophyll are replaced by copper ions. After a series of complex chemical processes such as saponification, extraction, and refining, sodium copper chlorophyllin is finally obtained. Sodium copper chlorophyllin is then mixed with other permitted food additives (such as fillers, dispersants, etc.) to produce fruit green powder.
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Quality Control Links: During the production process, quality control of raw materials is crucial. For example, the plant raw materials used for extracting chlorophyll need to be fresh and free of pollution. Meanwhile, the reaction conditions (such as temperature, pH value, reaction time, etc.) in the chemical synthesis process need to be strictly controlled to ensure the purity and quality of the product. Each batch of products needs to undergo strict inspections, including purity testing, heavy metal content testing, and microbial testing.
Quality Standards and Specifications
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Purity Standards: For fruit green powder, the purity of sodium copper chlorophyllin is an important indicator. For food-grade fruit green powder, the purity of sodium copper chlorophyllin is generally required to be between 85% and 95%. High-purity products can ensure better coloring effects and stability.
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Heavy Metal Content Limits: To ensure food safety, there are strict limits on the content of heavy metals (such as lead, mercury, arsenic, etc.). For example, the lead content is usually required to not exceed 1 mg/kg, the mercury content is required to not exceed 0.1 mg/kg, and the arsenic content is required to not exceed 1 mg/kg.
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Microbial Indicators: The total number of bacteria is generally required to not exceed 1000 CFU/g, the total number of molds and yeasts is generally required to not exceed 100 CFU/g, and pathogenic bacteria such as coliforms and Salmonella must not be detected.
Uses and Application Fields
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Food Industry: Fruit green powder is a widely used food coloring agent. It can be used for coloring beverages (such as fruit juice drinks, carbonated drinks, etc.), giving them a fresh green color and increasing the attractiveness of the products. In baked goods (such as pastries, breads, etc.), it is used to create green decorative parts or color the products as a whole. It can also play a coloring role in candies, jellies and other products, making the products have an appealing appearance.
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Cosmetics Industry: It can be used as a coloring ingredient in some green-themed cosmetics (such as eye shadows, nail polishes, etc.). However, since cosmetics have higher requirements for the safety and stability of ingredients, when using fruit green powder, it is necessary to ensure that it meets the quality standards of the cosmetics industry and consider its compatibility with other ingredients.
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