Application of FT-Raman spectroscopy on the characterization of edible oils

碩士 === 國立嘉義大學 === 食品科學系碩士班 === 92 === Methods for evaluating edible oils was developed by FT-Raman spectroscopy. First of all, the feasibility of FT-Raman in edible oils was tested by measuring the degree of unsaturation of oil standards of which results were compared with conventional ti...

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Main Authors: Ru-Hui Weng, 翁汝卉
Other Authors: Yih-Ming Weng
Format: Others
Language:zh-TW
Published: 2004
Online Access:http://ndltd.ncl.edu.tw/handle/69965472815581694062
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spelling ndltd-TW-092NCYU02540042016-06-17T04:16:05Z http://ndltd.ncl.edu.tw/handle/69965472815581694062 Application of FT-Raman spectroscopy on the characterization of edible oils 傅立葉轉換拉曼光譜應用於食用油脂特性之研究 Ru-Hui Weng 翁汝卉 碩士 國立嘉義大學 食品科學系碩士班 92 Methods for evaluating edible oils was developed by FT-Raman spectroscopy. First of all, the feasibility of FT-Raman in edible oils was tested by measuring the degree of unsaturation of oil standards of which results were compared with conventional titration methods (Iodine Value Determination, IV). The consistency (R2=0.9825) between FT-Raman method and IV methods suggests that FT-Raman might serve a powerful tool for evaluating oil quality. The established FT-Raman method was then used to determine the authenticity of Ku-Char oils (Camellia Oleifera Able) collected from various markets. By determining the number of double bonds (NDB), i.e., the degree of unsaturation, in the binary mixture of Ku-Char oil and various edible oils, we are more confident in applying FT-Raman in solving the adulteration problems of Ku-Char oils. Additionally, characterization of various oil compounds was carried out, all proves that FT-Raman provides a direct, rapid and free of hazardous chemicals application. Finally, combining FT-Raman with the principal component analysis (PCA) of multivariate statistical analysis was approached to solve the adulteration problems in Ku-Char oils. Both NDB and PCA results were in highly consistency. Based on the aforementioned results, FT-Raman proved itself a powerful technique for oil analysis since each measurement could be completed in 3 minutes without any sample modifications. Yih-Ming Weng Wenlung Chen 翁義銘 陳文龍 2004 學位論文 ; thesis 0 zh-TW
collection NDLTD
language zh-TW
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sources NDLTD
description 碩士 === 國立嘉義大學 === 食品科學系碩士班 === 92 === Methods for evaluating edible oils was developed by FT-Raman spectroscopy. First of all, the feasibility of FT-Raman in edible oils was tested by measuring the degree of unsaturation of oil standards of which results were compared with conventional titration methods (Iodine Value Determination, IV). The consistency (R2=0.9825) between FT-Raman method and IV methods suggests that FT-Raman might serve a powerful tool for evaluating oil quality. The established FT-Raman method was then used to determine the authenticity of Ku-Char oils (Camellia Oleifera Able) collected from various markets. By determining the number of double bonds (NDB), i.e., the degree of unsaturation, in the binary mixture of Ku-Char oil and various edible oils, we are more confident in applying FT-Raman in solving the adulteration problems of Ku-Char oils. Additionally, characterization of various oil compounds was carried out, all proves that FT-Raman provides a direct, rapid and free of hazardous chemicals application. Finally, combining FT-Raman with the principal component analysis (PCA) of multivariate statistical analysis was approached to solve the adulteration problems in Ku-Char oils. Both NDB and PCA results were in highly consistency. Based on the aforementioned results, FT-Raman proved itself a powerful technique for oil analysis since each measurement could be completed in 3 minutes without any sample modifications.
author2 Yih-Ming Weng
author_facet Yih-Ming Weng
Ru-Hui Weng
翁汝卉
author Ru-Hui Weng
翁汝卉
spellingShingle Ru-Hui Weng
翁汝卉
Application of FT-Raman spectroscopy on the characterization of edible oils
author_sort Ru-Hui Weng
title Application of FT-Raman spectroscopy on the characterization of edible oils
title_short Application of FT-Raman spectroscopy on the characterization of edible oils
title_full Application of FT-Raman spectroscopy on the characterization of edible oils
title_fullStr Application of FT-Raman spectroscopy on the characterization of edible oils
title_full_unstemmed Application of FT-Raman spectroscopy on the characterization of edible oils
title_sort application of ft-raman spectroscopy on the characterization of edible oils
publishDate 2004
url http://ndltd.ncl.edu.tw/handle/69965472815581694062
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