Review of portable near infrared spectrometers: Current status and new techniques

Zhu, Chenxi; Fu, Xiaping; Zhang, Jianyi; Qin, A. K.; Wu, Chunlei

doi:10.1177/09670335211030617

Cited by 36 publications

(17 citation statements)

References 68 publications

(59 reference statements)

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“…The non‐destructive process, rapid measurement of various characteristics, especially chemical ones, and their possible use outside the laboratory, in the field or in fruit packing stations have made them more appealing and a target of interest for various stakeholders 152 . It is a known fact that this equipment has become more portable, more robust, and more affordable and so more widespread.…”

Section: Quality Evaluation Using Near‐infrared Spectroscopy (Nirs)mentioning

confidence: 99%

“…145 The non-destructive process, rapid measurement of various characteristics, especially chemical ones, and their possible use outside the laboratory, in the field or in fruit packing stations have made them more appealing and a target of interest for various stakeholders. 152 It is a known fact that this equipment has become more portable, more robust, and more affordable and so more widespread. Thus some small, handheld NIR spectrometers are easy to transport and can be used outside the laboratories, in the entire supply chain, in the orchard, in transport, retailing and processing, including inside cold chambers, simultaneously with harvest or throughout storage, using whole fruits without preparation.…”

Section: Quality Evaluation Using Near-infrared Spectroscopy (Nirs)mentioning

confidence: 99%

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Methods for quality evaluation of sweet cherry

Ricardo‐Rodrigues

Laranjo

2022

J Sci Food Agric

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Sweet cherry (Prunus avium L.) is a highly valued fruit, whose quality can be evaluated using several objective methodologies, such as calibre, colour, texture, soluble solids content (SSC), titratable acidity (TA), as well as maturity indexes. Functional and nutritional compounds are also frequently determined, in response to consumer demand. The aim of the present review is to clarify and establish quality evaluation parameters and methodologies for the whole cherry supply chain, in order to promote easy and faithful communication among all stakeholders. The use of near-infrared spectroscopy (NIRS) as a non-destructive and expeditious method for assessing some quality parameters is discussed. In this review, the results of a wide survey to assess the most common methodologies for cherry quality evaluation, carried out among cherry researchers and producers within the framework of the COST Action FA1104 'Sustainable production of high-quality cherries for the European market', are also reported. The standardisation of quality evaluation parameters is expected to contribute to the preservation and shelf-life extension of sweet cherries, and the valorisation of the whole supply chain. For future studies on sweet cherry, we put forward a proposal regarding both sample size and the tests chosen to evaluate each parameter.

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Section: Quality Evaluation Using Near‐infrared Spectroscopy (Nirs)mentioning

confidence: 99%

Section: Quality Evaluation Using Near-infrared Spectroscopy (Nirs)mentioning

confidence: 99%

Methods for quality evaluation of sweet cherry

Ricardo‐Rodrigues

Laranjo

2022

J Sci Food Agric

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“…Imaging spectrometers have advantages over other remote sensing technologies in target detection and identification, 1 – 4 making them a hot topic of research in recent years. Imaging spectrometers typically use a two-dimensional (2D) detector array to receive the 2D spatial and one-dimensional spectral information of the measured target.…”

Section: Introductionmentioning

confidence: 99%

Location and spectral extraction algorithm for a static broadband snapshot imaging spectrometer

Wang,

Yang,

et al. 2024

Opt. Eng.

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A location algorithm and a spectral extraction algorithm for a static broadband snapshot imaging spectrometer (SBSIS) are presented. The high-energy target is dispersed into a V-shaped pseudo-image (VPI) in the focal plane of the SBSIS. The location algorithm accurately calculates the target azimuth based on the one-to-one mapping relationship between the intersection position of the extension lines of the two arms of the VPI and the azimuth of the target. The spectral extraction algorithm is described to extract the characteristic spectrum of the target based on the azimuth angle of the target and the VPI.

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“…There are several instruments on the market. Zhu et al [ 4 ] reviews the main types of commercial universal serial bus (USB) NIR spectrometers and compares their specifications. These devices are used in order to perform nondestructive quality assessment, e.g., food and especially fruits.…”

Section: Introductionmentioning

confidence: 99%

OpenVNT: An Open Platform for VIS-NIR Technology

Kulko

Pletl

Mempel

et al. 2023

Sensors

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Spectrometers measure diffuse reflectance and create a “molecular fingerprint” of the material under investigation. Ruggedized, small scale devices for “in-field” use cases exist. Such devices might for example be used by companies in the food supply chain for inward inspection of goods. However, their application for the industrial Internet of Things workflows or scientific research is limited due to their proprietary nature. We propose an open platform for visible and near-infrared technology (OpenVNT), an open platform for capturing, transmitting, and analysing spectral measurements. It is built for use in the field, as it is battery-powered and transmits data wireless. To achieve high accuracy, the OpenVNT instrument contains two spectrometers covering a wavelength range of 400–1700 nm. We conducted a study on white grapes to compare the performance of the OpenVNT instrument against the Felix Instruments F750, an established commercial instrument. Using a refractometer as ground truth, we built and validated models to estimate the Brix value. As a quality measure, we used coefficient of determination of the cross-validation (R2CV) between the instrument estimation and ground truth. With 0.94 for the OpenVNT and 0.97 for the F750, a comparable R2CV was achieved for both instruments. OpenVNT matches the performance of commercially available instruments at one tenth of the price. We provide an open bill of materials, building instructions, firmware, and analysis software to enable research and industrial IOT solutions without the limitations of walled garden platforms.

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Review of portable near infrared spectrometers: Current status and new techniques

Cited by 36 publications

References 68 publications

Methods for quality evaluation of sweet cherry

Methods for quality evaluation of sweet cherry

Location and spectral extraction algorithm for a static broadband snapshot imaging spectrometer

OpenVNT: An Open Platform for VIS-NIR Technology

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