Recent Advances in Portable and Handheld NIR Spectrometers and Applications in Milk, Cheese and Dairy Powders

Abstract

Quality and safety monitoring in the dairy industry is required to ensure products meet a high-standard based on legislation and customer requirements. The need for non-destructive, low-cost and user-friendly process analytical technologies, targeted at operators (as the end-users) for routine product inspections is increasing. In recent years, the development and advances in sensing technologies have led to miniaturisation of near infrared (NIR) spectrometers to a new era. The new generation of miniaturised NIR analysers are designed as compact, small and lightweight devices with a low cost, providing a strong capability for on-site or on-farm product measurements. Applying portable and handheld NIR spectrometers in the dairy sector is increasing; however, little information is currently available on these applications and instrument performance. As a result, this review focuses on recent developments of handheld and portable NIR devices and its latest applications in the field of dairy, including chemical composition, on-site quality detection, and safety assurance (i.e., adulteration) in milk, cheese and dairy powders. Comparison of model performance between handheld and bench-top NIR spectrometers is also given. Lastly, challenges of current handheld/portable devices and future trends on implementing these devices in the dairy sector is discussed.

A Comparative Study of Benchtop and Portable NIR and Raman Spectroscopic Methods for the Quantitative Determination of Curcuminoids in Turmeric Powder

“…In past decades, complicated analysis methods in several branches have been allowed with modern nondestructive analytical methods [ 28 , 29 ]. In this study, five different spectroscopic methods, including benchtop FT-IR, NIR, and Raman spectrometers and portable NIR and Raman spectrometers combined with PLSR, were investigated to analyze the total curcuminoid content in turmeric samples.…”

Research on near infrared spectroscopy based on DMD

“…This study can provide a reference for the design of a low-cost, practical and miniaturized fruit and vegetable quality detection system.In addition, PU, D P é rez Mar í n, etc. applied the near-infrared spectroscopy detection technology based on DMD to the detection of the nutrient content of milk, cheese and other dairy products [35] , Xu Sai, etc. used the near-infrared spectroscopy based on DMD to detect the type and mixing ratio of Pu'er tea [36], Cui Fang, etc.…”

Extended InGaAs PIN photodiode with improved linearity for FTIR spectroscopy

“…Fourier Transform Infrared Spectroscopy (FTIR) is widely used as a characterization tool in pharmacology and materials science. Extended InGaAs p-i-n detectors with a 2.6 µm wavelength cutoff are popular in Near-Infrared (NIR) instruments [1][2][3][4] used in the medical, food and dairy industry. The FTIR instrument works by Fourier transforming the detected optical signal to obtain the infrared spectrum.…”