Near-infrared spectroscopy (NIRS)

Near-infrared spectroscopy (NIRS) is a spectroscopic method that covers the near infrared region of the electromagnetic spectrum (800–2,500 nm). Unlike mid-infrared spectroscopy, NIRS can penetrate much deeper into a sample. This non-destructive, high-performance analytical technique is used in the feed industry to assess the composition and quality of processed animal proteins, ensuring compliance with industry standards.

How does NIRS work?

NIRS involves measuring the reflectance of near-infrared light from a sample. When infrared light is aimed at a sample, the different molecular bonds in the sample absorb specific wavelengths of light. The resulting reflectance spectrum can be analyzed to determine the composition and properties of the sample. Key aspects of NIRS include:

• Speed and efficiency: NIRS provides rapid results – often taking less than a minute. This is ideal for facilities with high sample volume.

• Non-destructiveness: This technique does not destroy the sample, allowing for further analysis if needed.

• Minimal sample preparation: It requires little or no sample preparation, simplifying the analytical process.

Applications of NIRS for processed animal proteins

NIRS is particularly useful in the processing and quality control of animal proteins. Its applications include:

• Composition analysis: NIRS is able to accurately measure the protein content of processed animal proteins, ensuring they meet nutritional and regulatory standards.

• Quality control: It ensures compositional consistency between batches of processed animal protein, which is crucial to maintaining product quality and customer satisfaction.

• Regulatory compliance: It helps verify that processed animal proteins comply with EU regulations and standards, such as those related to nutritional content and the absence of harmful substances.

Advantages of using NIRS

The application of NIRS in the analysis of processed animal proteins brings several advantages:

• Accuracy: It provides accurate and reliable data on the composition of animal proteins.

• Cost effectiveness: It reduces the need for more expensive and time-consuming analytical methods.

• Real-time monitoring: It enables real-time monitoring and adjustments during the processing of animal proteins, increasing overall efficiency.