Identification of Adulterated Spray Plasma Protein Powder
Spray dried plasma protein powder has different quality due to different processing techniques. Due to the high price, there are often adulterated products. The following points are for reference when purchasing:
1. Appearance color: When plasma protein powder is produced, the color of plasma protein powder is reddish if the separation is incomplete. If the blood cells are mixed in the plasma protein powder, the protein content of plasma protein powder is increased, but its value is Greatly reduced because protein digestibility is reduced. It can also be identified using a water-solubility test. Products with a mixture of blood cell proteins have a red solution and are insoluble in water. The appearance of a true high quality pure plasma protein powder after water dissolution should be a clear, light yellow, complete solution
2. Water solubility analysis: The high quality plasma protein powder is made by spray drying the pure plasma, so it should be 100% of the class is soluble in water, and the water solubility is fast, the solution looks pale yellow, completely clear solution. Inferior plasma protein powder (incorporated into soy protein isolate or albumen, or incomplete separation of blood cells in plasma, etc.), although the protein content is high, but its water solubility is poor, the water-soluble rate is very slow, and it can be seen that too much of the water-soluble head is not floating Above or at the bottom.
3. Analysis of nutrient content: High-quality plasma protein powder has increased protein content (up to 76%-82%) due to the addition of ash-removing domestic and reverse osmosis concentration and other special processes in its production process, resulting in a higher recovery rate. Low, relatively good quality and higher value. Without this process, the protein content of plasma protein powder is less than 72%, and the ash content is more than 14%.
4. Protein denaturation analysis: High temperatures in the processing process not only result in protein denaturation but also loss of specific active proteins such as immunoglobulin activity. How to identify if the plasma protein powder is overheated, it is advisable to add the appropriate amount of water to the sample in an incubator at 100C for 10 to 15 minutes. The high-quality plasma protein powder should be in a solidified state and the solidified body color is always free of any impurity stains.
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