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Author: Mohamed Elwathig Saeed Mirghani
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838339429
Category :
Languages : en
Pages : 300
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Book Description
The objectives of this study were to develop fast, accurate, low cost, sensitive and environmentally friendly analytical methods for selected quality factors and minor components in edible oils and fats and their associated products using Fourier Transform Infrared (FTIR) spectroscopy. These analyses include soap residues in the chemically refined vegetable oils, quantifying hexane residues in the solvent extracted vegetable oils, detection of aflatoxins in groundnut and groundnut cake, the determination of malondialdehyde (MDA) as one of the thiobarbituric acid reactive substances (TBARS) in edible oils, the determination of minor components in edible oils such as sesamol and gossypol in sesame seed and cottonseed oils, respectively. In addition, the FTIR techniques were also be used to determine the adulteration of sesame seed oil with other vegetable oils and lard in body fats of chicken, lamb and cow.
Author: Mohamed Elwathig Saeed Mirghani
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838339429
Category :
Languages : en
Pages : 300
Get Book Here
Book Description
The objectives of this study were to develop fast, accurate, low cost, sensitive and environmentally friendly analytical methods for selected quality factors and minor components in edible oils and fats and their associated products using Fourier Transform Infrared (FTIR) spectroscopy. These analyses include soap residues in the chemically refined vegetable oils, quantifying hexane residues in the solvent extracted vegetable oils, detection of aflatoxins in groundnut and groundnut cake, the determination of malondialdehyde (MDA) as one of the thiobarbituric acid reactive substances (TBARS) in edible oils, the determination of minor components in edible oils such as sesamol and gossypol in sesame seed and cottonseed oils, respectively. In addition, the FTIR techniques were also be used to determine the adulteration of sesame seed oil with other vegetable oils and lard in body fats of chicken, lamb and cow.
Author: Adriana S. Franca
Publisher: CRC Press
ISBN: 1351648799
Category : Science
Languages : en
Pages : 797
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Book Description
Given the inherent complexity of food products, most instrumental techniques employed for quality and authenticity evaluation (e.g., chromatographic methods) are time demanding, expensive, and involve a considerable amount of manual labor. Therefore, there has been an increasing interest in simpler, faster, and reliable analytical methods for assessing food quality attributes. Spectroscopic Methods in Food Analysis presents the basic concepts of spectroscopic methods, together with a discussion on the most important applications in food analysis. The determination of product quality and authenticity and the detection of adulteration are major issues in the food industry, causing concern among consumers and special attention among food manufacturers. As such, this book explains why spectroscopic methods have been extensively employed to the analysis of food products as they often require minimal or no sample preparation, provide rapid and on-line analysis, and have the potential to run multiple tests on a single sample (i.e., non-destructive). This book consists of concepts related to food quality and authenticity, that are quite broad, given the different demands of the manufacturer, the consumer, the surveillance and the legislative bodies that ultimately provide healthy and safe products.
Author: A. van Amerongen
Publisher: BRILL
ISBN: 9086866069
Category : Technology & Engineering
Languages : en
Pages : 259
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Book Description
"There is an ever-increasing need for rapid methods and instrumentation in the field of food and feed quality. Key issues dealt with in the food and feed industry include: monitoring of processes at all stages; showing due diligence in the control of food and nutritional quality; achieving rapid results for detecting (micro)biological, chemical and physical deterioration of food and feed; and finally, detecting rapidly and reliably food authenticity and/or adulteration. Developments in analytical techniques have led to the emergence of a wide range of rapid methods to complement the traditional methods. Faster results, higher productivity, lower costs and increased sensitivity are key concepts for all those involved in writing this book. Key topics include: - emerging rapid technologies; - rapid monitoring of food and nutritional quality; - rapid testing of quality deterioration and spoilage; - rapid testing of authenticity and adulteration; - quality tracking & tracing and rapid testing. The methods and techniques presented here, in their varying degree of complexity, will be a valuable resource for researchers and professionals from the food and feed industry as well as from the scientific community. This book is an ideal supplement to 'Rapid Methods for biological and chemical contaminants in food and feed' as published in 2005."
Author: Helmut G¿nzler
Publisher: VCH
ISBN: 9783527331710
Category :
Languages : en
Pages : 408
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Book Description
Updated and with approximately 25% new content, this textbook covers the latest developments, including instrumentation for microscopy and imaging, as well as current applications. The authors adopt a didactic approach, introducing infrared spectroscopy in a clear and well-structured way to provide students with a solid background in the principles and knowledge for efficiently using the method to obtain reliable results. Both beginners and experts will find up-to-date references for further reading. A must-have for advanced students (Master′s and PhD) as well as those wanting to learn how the method works and how to work with it, including scientists from private and governmental labs.
Author: Jacqueline Sedman
Publisher:
ISBN:
Category : Fourier transform infrared spectroscopy
Languages : en
Pages : 466
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Book Description
"The application of Fourier transform infrared (FTIR) spectroscopy in the assessment of oil quality and stability and the determination of the degree and type (cis or trans) of unsaturation of fats and oils was investigated. FTIR spectroscopy was shown to provide a rapid means of monitoring changes in oils undergoing oxidation or subjected to thermal stress. Absorption bands associated with common primary and secondary oxidation products were identified by relating them to those of spectroscopically representative reference compounds, and a quantitative approach based on the use of oils spiked with these reference compounds as calibration standards was proposed. A sample-handling accessory based on a heated 25-mum transmission flow cell and heated input and output lines was developed to facilitate the rapid analysis of oils and premelted fats in their neat form. Using this system, an FTIR edible oil analysis package was developed to simultaneously analyze for trans content, cis content, iodine value (IV), and saponification number (SN) of neat fats and oils, using partial-least-squares (PLS) calibrations based on pure triglycerides. An automated transmission-based peak height method for isolated trans isomer determination using the characteristic trans absorption band at 967 cm -1 in the spectrum of a neat fat or oil, ratioed against the spectrum of a trans-free oil, was also developed. A subsequent validation study involving the analysis of more than 100 oil samples demonstrated concurrence between the trans data obtained by the PLS and peak height FTIR methods as well as between IV results obtained by FTIR analysis and gas chromatography. In addition, the internal consistency of the IV, cis, and trans FTIR predictions provided strong experimental evidence that the FTIR edible oil analysis package measures all three parameters accurately. A PLS-based IV/trans method was developed for a heated single-bounce horizontal attenuated total reflectance (SB-HATR) sample-" --
Author: Y. H. Hui
Publisher: CRC Press
ISBN: 146650787X
Category : Technology & Engineering
Languages : en
Pages : 3632
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Book Description
Advances in food science, technology, and engineering are occurring at such a rapid rate that obtaining current, detailed information is challenging at best. While almost everyone engaged in these disciplines has accumulated a vast variety of data over time, an organized, comprehensive resource containing this data would be invaluable to have. The
Author: Mossoba
Publisher: CRC Press
ISBN: 9780824702236
Category : Technology & Engineering
Languages : en
Pages : 484
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Book Description
Outlines the basic principles, advanced instrumentation, applications and future potential of a range of spectral techniques in food analysis. The book introduces new applications of GC-MS, LC-MS, MALDI TOF-MS, GC-FTIR, SFC-FTIR, ATR, and Raman spectroscopy. The book covers the identification and quantitation of food constituents, additives and contaminants.
Author: Casimir C. Akoh
Publisher: CRC Press
ISBN: 9780203908815
Category : Technology & Engineering
Languages : en
Pages : 1032
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Book Description
Highlighting the role of dietary fats in foods, human health, and disease, this book offers comprehensive presentations of lipids in food. Furnishing a solid background in lipid nomenclature and classification, it contains over 3600 bibliographic citations for more in-depth exploration of specific topics and over 530 illustrations, tables, and equa
Author: Adriana S. Franca
Publisher: CRC Press
ISBN: 1498754643
Category : Science
Languages : en
Pages : 664
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Book Description
Given the inherent complexity of food products, most instrumental techniques employed for quality and authenticity evaluation (e.g., chromatographic methods) are time demanding, expensive, and involve a considerable amount of manual labor. Therefore, there has been an increasing interest in simpler, faster, and reliable analytical methods for assessing food quality attributes. Spectroscopic Methods in Food Analysis presents the basic concepts of spectroscopic methods, together with a discussion on the most important applications in food analysis. The determination of product quality and authenticity and the detection of adulteration are major issues in the food industry, causing concern among consumers and special attention among food manufacturers. As such, this book explains why spectroscopic methods have been extensively employed to the analysis of food products as they often require minimal or no sample preparation, provide rapid and on-line analysis, and have the potential to run multiple tests on a single sample (i.e., non-destructive). This book consists of concepts related to food quality and authenticity, that are quite broad, given the different demands of the manufacturer, the consumer, the surveillance and the legislative bodies that ultimately provide healthy and safe products.
Author: Rui M. S. Cruz
Publisher: CRC Press
ISBN: 1482231964
Category : Science
Languages : en
Pages : 248
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Book Description
This book reviews methods of analysis and detection in the area of food science and technology. Each chapter deals with determination/quantification analyses of quality parameters in food, covering topics such as lipids, color, texture, and rheological properties in different food products. The book focuses on the most common methods of analysis, p
