scholarly journals Determination of 3-Monochloropropanediol and Glycidol in Food Products

2022 ◽  
Vol 34 (2) ◽  
pp. 429-431
Author(s):  
A.I. Kozhushkevich ◽  
E.S. Kozeicheva ◽  
A.M. Lebedev ◽  
V.V. Ovcharenko ◽  
A.M. Kalantaenko
Keyword(s):  
Vegetable Oils ◽  
Milk Fat ◽  
Current Problem ◽  
Phenylboronic Acid ◽  
Food Products ◽  
Food Samples ◽  
Food Contaminants ◽  
Food Markets ◽  
New Challenges

Due to the increasing globalization of food markets, there are evolving new challenges for maintaing food safety. The current problem is the development of analytical methods for 3-monochloropropanediol ester and glycidol ester, which are food contaminants of concern for the scientific community. The levels of 3-monochloropropanediol ester and glycidol ester in certain food products are controlled by the European legislation. However, the maximum allowed concentrations and uptake limits for various food products are permanently revised. Therefore, we aimed to determine 3-monochloropropanediol ester and glycidol ester in various food products, which may contain vegetable oils. We analyzed food samples obtained from local food shops, predominantly low-priced products, which are more likely to contain vegetable oils, and adulterated milk fat. The levels of 3-monochloropropanediol ester and glycidol ester were determined indirectly by analyzing free 3-monochloropropanediol and glycidol ester obtained by hydrolysis and derivatized with phenylboronic acid. Samples were analyzed by GC-MS/MS on a triple-quad mass spectrometer.

scholarly journals Detection of Five Mycotoxins in Different Food Matrices in the Malaysian Market by Using Validated Liquid Chromatography Electrospray Ionization Triple Quadrupole Mass Spectrometry

Toxins ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 196 ◽  
Author(s):  
Ali Alsharif ◽  
Yeun-Mun Choo ◽  
Guan-Huat Tan
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Ochratoxin A ◽  
Wheat Flour ◽  
Food Samples ◽  
Food Contaminants ◽  
Relative Standard ◽  
Liquid Chromatography Tandem Mass ◽  
Food Matrices

Mycotoxins are common food contaminants which cause poisoning and severe health risks to humans and animals. The present study applied chemometric approach in liquid chromatography-tandem mass spectrometry (LC-MS/MS) optimization for simultaneous determination of mycotoxins, i.e., aflatoxins B1, B2, G1, and G2, and ochratoxin A. The validated quick, easy, cheap, effective, rugged, and safe (QuEChERS)-LC-MS/MS method was used to study the occurrence of mycotoxins in 120 food matrices. The recovery ranges from 81.94% to 101.67% with relative standard deviation (RSD) lesser than 11%. Through the developed method, aflatoxins were detected in raisin, pistachio, peanut, wheat flour, spice, and chili samples with concentration ranges from 0.45 to 16.93 µg/kg. Trace concentration of ochratoxin A was found in wheat flour and peanut samples which ranged from 1.2 to 3.53 µg/kg. Some of the tested food samples contained mycotoxins of above the European legal maximum limit.

Direct Determination of Thermophysical Parameter Kρc in Mayonnaise, Shortening, and Edible Oil

1992 ◽  
Vol 46 (4) ◽  
pp. 602-605 ◽  
Author(s):  
Dane Bicanic ◽  
Mihai Chirtoc ◽  
Dorin Dadârlat ◽  
Pieter Van Bovenkamp ◽  
Heidi Van Schayk
Keyword(s):  
Direct Determination ◽  
Thermal Characterization ◽  
Food Products ◽  
Food Samples ◽  
Edible Oil ◽  
Thermophysical Parameter ◽  
Novel Variant ◽  
And Storage

Inverse photopyroelectric (IPPE) spectroscopy, a novel variant among the photothermal spectroscopies, has been used for direct determination of ( Kρc)½ in a variety of food samples. The method appears capable of thermal characterization, and when combined with more mature techniques may prove useful in food products industry and storage.

scholarly journals A review of current analytical methods for the determination of prebiotics in foods

2021 ◽  
Vol 4 (2) ◽  
pp. 146-159
Author(s):  
Son Tran Hung ◽  
Thanh An Vu Thi ◽  
Thanh Hoa Mac Thi ◽  
Khanh Cao Cong ◽  
Hong Hao Le Thi ◽  
...  
Keyword(s):  
Human Health ◽  
Intestinal Microbiota ◽  
Analytical Methods ◽  
Food Products ◽  
Food Samples ◽  
Beneficial Effects ◽  
Human Intestinal Microbiota ◽  
Good Potential ◽  
The Relationship

Prebiotics are a group that improves the human intestinal microbiota. The relationship between prebiotics and human health has been an area of increasing interest in recent years. Fructo-oligosaccharides and galacto-oligosaccharides are the two important groups of prebiotics with beneficial effects on human health. Besides that, more and more carbohydrates have shown a good potential to be prebiotics has been studied. This study presents a review of the characteristics, properties, and analytical methods used for the determination of prebiotics in food products. Most of the methods found using chromatographic methods, especially HPAEC - PAD but also another method, such as spectrometric methods have been presented. A discussion was presented highlighting the drawbacks of current analytical methods and the need to develop these methods to analyze the complex food samples containing prebiotics.

Determination of Trace Amounts of Nitrites in Fabricated Nonmeat Products

1981 ◽  
Vol 64 (1) ◽  
pp. 226-227
Author(s):  
Anthony Desiena ◽  
Emma Jacobs ◽  
Ronald Romagnoli
Keyword(s):  
Vegetable Oils ◽  
Raw Materials ◽  
Food Products ◽  
Soy Proteins ◽  
Processed Meats ◽  
Aoac Method ◽  
Hydrogenated Vegetable Oils ◽  
Low Levels ◽  
Composite Samples

Abstract Low levels of nitrite (1-5 ppm) contributed by raw materials in new fabricated food products were successfully determined by a modification of an AOAC method for processed meats. Recoveries were greater than 90% for composite samples to which 5-10 ppm nitrite had been added. This method allows analyses of fabricated food products containing hydrogenated vegetable oils, soy proteins, and dried egg whites for low levels of nitrite.

scholarly journals Zmienność światowych cen żywności w latach 2000-2018

2019 ◽  
Vol 19(34) (2) ◽  
pp. 196-209
Author(s):  
Krystyna Świetlik
Keyword(s):  
Vegetable Oils ◽  
Food Products ◽  
Food Prices ◽  
Main Direction ◽  
Dairy Markets ◽  
Meat Market ◽  
Global Food

The aim of the paper is to present the main direction of change in global prices of farm and food products during 2000-2018, determination of the level of change and indication of the reasons for these phenomena. The main source for the data was average annual indices of food prices from the FAO. The analyses showed that in 2011 global food prices reached a level over two and a half times higher than in 2000, but during the period under investigation they increased by 85%. The greatest increase was in the price of vegetable oils due to the development of biofuels. The largest fluctuations in prices were noted in the sugar and dairy markets, and the smallest in the meat market. It was concluded that during longer periods demand had the greatest influence on global food prices, while during shorter periods it was drastic changes in supply.

Determination of quaternary ammonium compounds in food products by the method of ultra-performance liquid chromatography/high resolution mass-spectrometry

2020 ◽  
Vol 86 (8) ◽  
pp. 23-31
Author(s):  
V. G. Amelin ◽  
D. S. Bolshakov
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Quaternary Ammonium ◽  
High Resolution Mass Spectrometry ◽  
Food Products ◽  
Quaternary Ammonium Compounds ◽  
High Resolution Mass ◽  
Ammonium Compounds ◽  
Resolution Mass

The goal of the study is developing a methodology for determination of the residual amounts of quaternary ammonium compounds (QAC) in food products by UHPLC/high-resolution mass spectrometry after water-acetonitrile extraction of the determined components from the analyzed samples. The identification and determination of QAC was carried out on an «UltiMate 3000» ultra-high-performance liquid chromatograph (Thermo Scientific, USA) equipped with a «maXis 4G» high-resolution quadrupole-time-of-flight mass spectrometric detector and an ion spray «ionBooster» source (Bruker Daltonics, Germany). Samples of milk, cheese (upper cortical layer), dumplings, pork, chicken skin and ground beef were used as working samples. Optimal conditions are specified for chromatographic separation of the mixture of five QAC, two of them being a mixture of homologues with a linear structure (including isomeric forms). The identification of QAC is carried out by the retention time, exact mass of the ions, and coincidence of the mSigma isotopic distribution. The limits for QAC detection are 0.1 – 0.5 ng/ml, the determination limits are 1 ng/ml for aqueous standard solutions. The determinable content of QAC in food products ranges within 1 – 100 ng/g. The results of analysis revealed the residual amount of QAC present in all samples, which confirms data of numerous sources of information about active use of QAC-based disinfectants in the meat and dairy industry. The correctness of the obtained results is verified by introduction of the additives in food products at a level of 10 ng/g for each QAC. The relative standard deviation of the analysis results does not exceed 0.18. The duration of the analysis is 30 – 40 min.

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