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Aqueous extraction and alkaline (NaOH) hydrolysis method were comparatively studied in polysaccharides extraction from submerged-cultured Agaricus blazei mycelia. The results show that the polysaccharide content and the total extract rate from alkaline extraction method were obviously higher than those from the aqueous extraction method. Optimization results by the orthogonal matrix method on polysaccharide...
Gas chromatography-mass spectrometry (GC-MS) was used to study the compounds from ether extract of Catharsius molossus L., the traditional Chinese medicine, 'dung beetle'. Over twenty kinds of compounds from the ether extract were detected, and fifteen compounds whose match index was more than 800 were identified. All the identified compounds belonged to fatty acids, and the extract was rich in unsaturated...
Objective: Discussion based on neural networks in the 31P MR spectroscopy to distinguish hepatocellular carcinoma, normal liver and cirrhosis in value. Methods: Using self-organizing map neural network (SOM) analyse 66 data of 31P MRS, including hepatocellular carcinoma (13 samples), normal liver (16 samples) and liver cirrhosis (37 samples). Results: 31P MRS can be used for the diagnosis and differential...
Through the evaluation of the 31Phosphorus Magnetic Resonance Spectroscopy (31P-MRS), we can distinguish three types of diagnosis: hepatocellular carcinoma, normal and cirrhosis. 71 samples of 31P-MRS data are selected including hepatocellular carcinoma, normal and cirrhosis tissue. Back-propagation neural network (BP) and Radial Basis Function Neural Network (RBF) are applied to analyze 31P-MRS data,...
In vivo 31P MRS provides non-invasive information about the chemical content of the energy metabolism in cellular level, which is important either in diagnosis or in treatment of many hepatic diseases. In this paper we applied Fisher linear discriminant analysis and quadratic discriminant analysis to classify the data samples based on 31P MRS into three types of hepatocellular carcinoma, hepatic cirrhosis...
In this paper, laser induced human serum Raman spectra of liver cancer are measured. The spectra in serum differences between normal people and liver cancer patients are analyzed. For the typical spectrum of normal serum, there are three sharp Raman peaks and relative intensity of Raman peaks excited by 514.5 nm is higher than that excited by 488.0 nm. However, for the Raman spectrum of liver cancer...
We present a three parametric model using Raman and fluorescence spectroscopy for detection and analysis of esophagus dysphasia and esophagus cancer. The model was set up from more than 200 samples. And 40 samples were used to test this algorithm of the model prospectively. The serum spectra were excited by laser of the wavelength 488.0 nm and 514.5 nm. The apparent differences of auto-fluorescence...
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