Food Analytical Methods
·
2015
·Vol. 9
·期 5
·1180-1187
·
IF 1.956
Ma Fei,Qin Hao,Zhou Cunliu,Wang Xia,Chen Conggui,Zheng Lei
The feasibility of using multispectral imaging (MSI) technique (405–970 nm) for predicting iron porphyrin (IP) content in pork was assessed. Based on nine feature wavelengths identified by successive projections algorithm (SPA), a partial least squares regression (PLSR) calibration model was established, leading to a determination coefficient ( R
2 ) of 0.996 for the prediction set. Visualization of IP content in each pixel of the multispectral images using the prediction model offers an effective way to monitor the distribution and real-time evolution of IP content during the manufacturing process. The results revealed the potentiality of MSI technique combined with PLSR calibration analysis as a rapid and non-destructive evaluation method of IP content for the agri-food industry.
研究领域:
食品科学
·
生物化学
·
农业工程
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Lingxia Xu,Yilai Wan,Xiaoxiao Liu,Zhaoyang Qin,Yue Zhao,Xizhe Fu,Changqing Wei,Wenyu Liu
The binding and release behavior of flaxseed proteins to aldehydes is significant for the sensory properties of flaxseed foods. The key aldehydes of flaxseed were selected by headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) and odor activity value (OAV) method, and the interaction between flaxseed protein and flaxseed protein was investigated by multispectral, molecular docking, molecular dynamics simulation, and particle size techniques. The results showed that 2,4-decadienal presented a higher binding capability and a higher Stern-Volmer constant with flaxseed protein than pentanal, benzaldehyde, and decanal. Thermodynamic analysis revealed that hydrogen bonding and hydrophobic interactions were the main forces. Aldehydes contributed to a certain reduction in radius of gyration (Rg) value and α-helix content of flaxseed protein. In addition, the results of particle size showed that aldehydes caused the proteins to aggregate toward larger particles. This study could provide new insights into the interactions between flaxseed food and flavor.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Photonics
·
2024
·
IF 32.3
Mu Ge,Tan Yimei,Bi Cheng,Liu Yanfei,Hao Qun,Tang Xin
Photodetection over a broad spectral range is necessary for multispectral sensing and imaging. Despite the fact that broadband single-element detectors with high performance have been demonstrated with various low-dimensional materials, broadband focal plane array imagers have been rarely reported. Here we propose a stacked lead sulfide/mercury telluride colloidal quantum dot photodetector configuration with optimized graded energy gaps. This architecture allows for ultrabroadband spectral response from 0.4 to 5.0 µm, with responsivity values of 0.23, 0.31, 0.83 and 0.71 A W −1 at 0.4, 0.7, 2.2 and 4.2 µm, respectively. We also fabricate a focal plane array imager with a resolution of 640 × 512, a low photoresponse non-uniformity down to 6% and a noise equivalent temperature difference as low as 34 mK. We demonstrate broadband imaging by simultaneously capturing both short-wave infrared and mid-wave infrared information, as well as multispectral imaging in the red, green, blue, short-wave infrared and mid-wave infrared channels, using a set of optical filters.
研究领域:
光电技术
·
材料科学
·
成像技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Fapeng Sun,Wei Liu
2D ionic-electronic coupled materials, offering mobile ions as an additional degree of freedom, open new avenues for device functionality beyond traditional electronic systems. However, harnessing ionic-electronic interactions to achieve broadband photodetection remains unexplored. Here, a van der Waals ionic-electronic semiconductor is reported that exhibits an ultrahigh and anisotropic temperature coefficient of resistance (TCR) of −7.29% °C −1 , which is attributed to its high ionic activation energy. Leveraging both photoelectric and bolometric effects, AIPSe enables dual-mode photodetection across the visible to near-infrared range. Through device engineering with asymmetric Schottky contacts and ionic migration modulation, photodiodes with an ultrahigh rectification ratio of ≈108 and bias-tunable dual-mode operation: photovoltaic detection with a responsivity of 0.385 A W −1 at 532 nm, and bolometric sensing with 0.486 A W −1 at 1550 nm is achieved. These devices demonstrate spectral self-recognition, secure dual-band optical communication, and multi-wavelength imaging capabilities. The work establishes ionic-electronic correlated transport in 2D materials as a new paradigm for beyond-bandgap optoelectronic technologies.
研究领域:
光电子学
·
材料科学
·
纳米技术
·
半导体物理
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Physics
·
2025
·
IF 9.7
Mingliu Li,Hongbin Wang,Shuo Yang,Lin Yang,Peng Li,Jiangang Ma,Yichun Liu
High sensitivity and fast response dual-band photodetectors (PDs) covering the deep-ultraviolet (DUV) to visible spectrum are highly desired for industrial and scientific applications. Herein, a sandwich-architecture PD covering the range from DUV to visible was prepared by stacking a β -Ga 2 O 3 DUV absorbing layer, interdigitated Au electrodes, and a Cs 2 AgBiBr 6 (CABB) visible absorbing layer. At 5 V bias voltage, the sandwich-architecture PD achieves responsivities of 37.74 mA/W at 240 nm and 0.07 mA/W at 450 nm with microsecond response time, respectively, which is superior to the PDs using monolayer β -Ga 2 O 3 or CABB. Furthermore, it demonstrates self-powered dual-band detection capability with maximum responsivity of 8.13 mA/W. Enhanced performance arises from two synergistic mechanisms: a vertical built-in electric field at the β -Ga 2 O 3 /CABB interface spatially separates photogenerated carriers, while a higher hole mobility in CABB facilitates the charge collection under a lateral bias field between Au electrodes. Importantly, the β -Ga 2 O 3 /Au/CABB PD demonstrates high-resolution images under 240 nm and 450 nm illumination. This work provides a route for developing high-performance DUV-visible dual-band photodetectors, highlighting their potential for advanced multispectral imaging applications.
研究领域:
光电子学
·
光电探测器
·
半导体材料
·
异质结器件
·
多光谱成像
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）