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Specifications:
Typically, it appears as a light - brown to dark - brown liquid or a dried powder after appropriate processing. The liquid form is usually clear or slightly turbid, while the powder is fine and free - flowing, which is convenient for storage and further formulation.
Identification methods involve a combination of chemical and instrumental techniques. Chemical assays can detect specific components such as certain vitamins (like vitamin A, B - complex vitamins) and minerals that are abundant in sheep liver. Instrumental analysis, including high - performance liquid chromatography (HPLC) and atomic absorption spectroscopy (AAS), can be used to identify and quantify the various bioactive substances and trace elements. HPLC helps in separating and identifying different organic compounds, while AAS is useful for determining the presence and concentration of metals.
Nutrient Content: Key nutrients such as vitamin A, B - group vitamins (e.g., B12), iron, and copper are important quality indicators. For example, the vitamin A content should reach a certain level to ensure its nutritional value.
Protein and Amino - Acid Profile: The extract contains proteins and various amino acids. Measuring the total protein content and the proportion of essential amino acids is crucial for evaluating its nutritional quality.
Microbiological Quality: Stringent limits are set for total aerobic microbial count, yeast and mold count, and the absence of pathogenic bacteria (such as Salmonella and E. coli). This is to guarantee the safety of the product, especially when used in food or pharmaceutical applications.
Heavy Metals and Pesticide Residues: The levels of heavy metals (e.g., lead, mercury) and pesticide residues are strictly controlled. Heavy - metal content is usually required to be less than a few parts per million (ppm) to avoid potential health risks.
In the pharmaceutical field, sheep liver extract has been used for its (blood - enriching) and hematopoietic effects, especially beneficial for people with iron - deficiency anemia or other blood - related disorders. In the food industry, it can be used as a nutritional supplement to enhance the vitamin and mineral content of food products. Additionally, in the cosmetics industry, due to its rich antioxidant and nourishing components, it may be added to skin - care products to promote skin health and improve skin texture.