Track topics on Twitter Track topics that are important to you
Recently, demand for authentication technology is growing rapidly in an attempt to overcome counterfeiting of high-value agricultural products, such as patchouli oil. Fingerprinting methods based on spectroscopy are one such technology being used for authentication. However, the spectral datasets obtained are multivariate in nature; containing thousands of data points for a single sample, making data acquisition and processing time-consuming. Therefore, reduction and simplification in the number of variables used required is needed to provide a more rapid and applicable method. Color cameras, which can capture image in the visible region light, could be such an alternative spectral data acquisition approach. In this research, a simplified spectroscopy method was developed for origin authentication of patchouli oil. The system consists of front ultraviolet light induced (365 nm) fluorescence and a white LED-based backlighting imaging system that consecutively captures the fluorescence and transmittance characteristics of the oil in the visible region. From the captured images, features were extracted and analyzed using Principle Component Analysis (PCA) to identify important image features for discrimination of origin. From the samples measured, the samples clustered around three islands of origin in the PCA space. A classification model based on fluorescence and transmittance image features (color values) could discriminate origin classes with a total accuracy of 88.46%. A lower accuracy was found for the Java class due to low sample numbers. This result demonstrates that the proposed system has the potential to be a rapid authentication tool for determining the geographical origin of patchouli oils.
This article was published in the following journal.
Name: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Intraoperative fluorescence imaging with indocyanine green (ICG) plays a significant role in the identification of hepatocellular carcinoma (HCC) during Hepatectomy. Despite that, few researchers have...
This article demonstrates surgical techniques of intraoperative fluorescence imaging using indocyanine green, focusing on its application in minimally invasive hepatobiliary and pancreatic surgery. In...
Optical imaging is one of the most common, low-cost imaging tools used for investigating the tumor biological behavior in vivo. This study explores the feasibility and sensitivity of a near infrared f...
In this work, DNA-templated silver nanoclusters (DNA-AgNCs) with unique fluorescent and electrochemical properties are prepared as dual signal probes for both qualitative imaging and quantitative dete...
We present dual-mode phase and fluorescence imaging in a confocal laser scanning microscopy (CLSM) system. For phase imaging, the depth of field of the CLSM system is extended by fast axial scanning w...
The goal of this clinical research study is to evaluate fluorescence imaging, widefield fluorescence imaging, point spectroscopy imaging methods, and or/ oral brush cytology that may help ...
This study aims to evaluate the feasibility of indocyanine green (ICG)-based fluorescence imaging in the detection of liver tumors. By correlating the ICG fluorescence patterns with pathol...
In this phase 1 study, the lymphatic transport will be examined using Near InfraRed Indocyanine Green fluorescence imaging (NIR-ICG) of the upper extremities in healthy individuals using a...
This research study will evaluate how Near Infrared Fluorescence imaging (NIFI) with indocyanine green (ICG) contrast dye can assist in the identification and diagnosis of lung nodules dur...
Primary • To explore the use of OTL38 and fluorescence imaging to detect RCC in partial nephrectomy at the margins of resection, and in lymph node(s) or other metastases during radical ...
The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; fluorescence imaging; and MICROSCOPY.
Optical imaging techniques used for recording patterns of electrical activity in tissues by monitoring transmembrane potentials via FLUORESCENCE imaging with voltage-sensitive fluorescent dyes.
Fluorescence microscopy utilizing multiple low-energy photons to produce the excitation event of the fluorophore. Multiphoton microscopes have a simplified optical path in the emission side due to the lack of an emission pinhole, which is necessary with normal confocal microscopes. Ultimately this allows spatial isolation of the excitation event, enabling deeper imaging into optically thick tissue, while restricting photobleaching and phototoxicity to the area being imaged.
The use of light interaction (scattering, absorption, and fluorescence) with biological tissue to obtain morphologically based information. It includes measuring inherent tissue optical properties such as scattering, absorption, and autofluorescence; or optical properties of exogenous targeted fluorescent molecular probes such as those used in optical MOLECULAR IMAGING, or nontargeted optical CONTRAST AGENTS.
Measurement of the intensity and quality of fluorescence.
Mergers & Acquisitions
Commercial and market reports on mergers and acquisitions in the biotechnology, pharmaceutical, medical device and life-science industries. Mergers and acquisitions (abbreviated M&A;) is an aspect of corporate strategy, corporate finance and manageme...