Food Process & Packaging

Analytical determination of bisphenol A (BPA) and bisphenol analogues in paper products by LC-MS/ MS
In this study a sensitive analytical method based on liquid chromatography-electrospray tandem mass spectrometry (LC-MS/MS) was developed for the simultaneous analysis of bisphenol A (BPA), bisphenol AF (BPAF), bisphenol B (BPB), bisphenol E (BPE), bisphenol F (BPF) and bisphenol S in different paper and board products, including virgin fibre samples and recycled samples.
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LCMS-8045 Application - Highly Sensitive and Rapid Analysis of Synthetic Dyes in Sea Food by LC/MS/MS
Here, LC/MS/MS method has been developed for quantitation of malachite green, leucomalachite green, crystal violet and leucocrystal violet from sea food sample using LCMS-8045, a triple quadrupole mass spectrometer from Shimadzu Corporation, Japan.
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EDX and FTIR Application - Contaminant Analysis Using EDXIR-Analysis Software for Combined EDX-FTIR Analysis
When contaminants are generated, it is important to quickly identify them, ascertain the source, and take measures against further occurrence. Energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR) are very effective techniques for the identification of contaminants. Using EDX and FTIR together provides a simple method of obtaining information on both the elements and compounds present in a contaminant. However, making a comprehensive assessment of sets of EDX and FTIR data to identify a contaminant requires substantial experience and knowledge. EDXIR-Analysis has been recently developed by Shimadzu as software specially designed to identify contaminants to a high degree of accuracy, and contains within it a database of actual contaminant samples and the cumulation of Shimadzu's expertise. In this article, we will describe an example contaminant analysis and in doing so demonstrate the functions and features of EDXIR-Analysis software.
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EDX and FTIR Application - Quantifying Silent Change Using EDXIR-Analysis Software - EDX-FTIR Contaminant Finder-Material Inspector
The EDXIR-Analysis software features a data comparison function. EDX data or FTIR data, or both, can be used to quantify the differences between genuine products and test products in terms of similarity. This function facilitates verification of raw materials as standard materials and proves effective in acceptance inspections, sampling inspections, and primary screening. In this article, we introduce an example analysis that utilizes the data comparison function.
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SolidSpec-3700 Application - Optical Properties of Films and Glasses Used to Protect Smartphones
Just as new smartphones are constantly being developed and marketed, a variety of accessories are sold alongside them. Films and glasses used to protect smartphone screens are among these accessories, with such products given a variety of optical properties including blue light reduction and screen privacy. Here, we describe using a SolidSpec-3700DUV UV-VISNIR spectrophotometer with variable angle absolute reflectance attachment to measure the optical properties of films and glasses used for smartphone protection.
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LCMS-8060 Application - High Sensitivity Analysis of Peanut Allergen in Cumin and Spice Mix (Japan)
Food allergens are a major public health concern. Among them, peanut allergy is one of the common food allergies. To avoid unexpected contact with food allergens, food labels are strictly used to indicate the presence of specific allergens. With the increasing awareness of food allergies, the presence of undeclared peanut in cumin lead to huge recalls in recent years. Although ELISA is the most commonly used technique to detect allergens, its false-positive rate is a major concern due to its cross-reactivity. We developed a method with high specificity and sensitivity to overcome this issue by using a high sensitivity triple quadrupole mass spectrometer to detect peanut allergen Ara h1 in commercially available spices and seasonings.
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GCMS-QP2010 Ultra Application - A Closer Look at Mineral Oil Fractions (Germany)
A currently heavy discussed theme in the field of packed food concerns mineral oil residues of different sources. The mineral oils fractions can be described by their chemical properties, so a MOSH and a MOAH fraction can be found (MOAH – mineral oil saturated hydrocarbons and MOAH – mineral oil aromatic hydrocarbons). MOSH consist of linear and branched alkanes, and alkyl substituted cycloalkanes, whilst MOAH include mainly alkyl-substituted polyaromatic hydrocarbons up to four aromatic rings. The main focus is thereby on the aromatic fraction, covering about 15-30% of the whole aromatic fraction, which is suspected to include potential carcinogenic and mutagenic constituents. Nevertheless the methods which are normally used lacking specific information of the composition of the mineral oils constituents. A common method uses the combination of HPLC and GC (either on-line or off-line) with non specific FID detection which quantifies only the total concentration of MOSH and MOAH. FID is used due its universal detection principle which eliminates structural influence of different molecules. In addition the methods uses a large volume injection with quite a steep temperature ramp resulting in broad unresolved humps.
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LCMS-8060 Application - High sensitive analysis of peanut allergen in cumin and spice mix (SSI)
Food allergens are a major public health concern. Among them, peanut allergy is one of the common food allergies. To avoid unexpected contact with food allergens, food labels are strictly used to indicate the presence of specific allergens. With the increasing awareness of food allergies, the presence of undeclared peanut in cumin lead to huge recalls in recent years. Although ELISA is one of the commonly used technique to detect allergens, its false-positive rate is a major concern due to its cross-reactivity. We developed a method with high specificity and sensitivity to overcome this issue by using a high sensitivity triple quadrupole mass spectrometer to detect peanut allergen Ara h1 in commercially available spices and seasonings.
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Nexera Application - Fast and High Sensitivity Analysis of Six Preservatives in Beverages by UHPLC with Photodiode Array Detection
Food preservatives are additives to inhibit, retard or prevent mould, acidification or other deterioration of foodstuffs caused by microbial contamination. The most commonly used preservatives in beverages are benzoic acid, sorbic acid and four parahydroxybenzoic acid esters (parabens). However, excess amounts of these additives can be harmful to consumer health. In this regard, the minimum permissible concentrations of preservatives are regulated in most countries to ensure safety for consumer. Therefore, quantitative analysis of these preservatives in food is not only required for food quality assurance but also important for consumer interest and protection. High performance liquid chromatography (HPLC) has been used for analysis of the preservatives in beverage. In this Application News, a new rapid and high sensitivity UHPLC method for simultaneous determination of the six preservatives in beverages is described. A gradient elution was optimized for separation and quantitation of the six preservatives with a photodiode array detector. A capillary flow cell with extra long optical path of 85 mm was employed to achieve high sensitivity for a very small injection amount of sample (1mL) which was not cleaned up except filtration.
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Nexera Application - Development of An UHPLC Method of Simultaneous Determination of Thirteen Bisphenols in Milk Samples
An UHPLC method with using a high sensitivity fluorescence detector was developed for fast, well-separation and high sensitivity analysis of thirteen bisphenols, including the most concerned BPA, BPF, BADGE and BFDGE, in milk samples. This new method shows high sensitivity to low µg/L levels, high accuracy and excellent repeatability. The method was applied to spiked milk samples and the results indicated the good feasibility, high sensitivity and reliability in simultaneous determination of thirteen bisphenols in milk samples.
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Wine bottle measurement with UV-2600 and MPC-2600 Quality control of color (Germany)
The glass appears transparent and emphasize a feeling of being clean, and the wine should be less influenced by additives which can be result from the carton. The glass color can be blue, green, brown or white for liquids. It seems that glass which is not clear green or direct brown can be result of mixture caused by melting green and brown glass fraction in one or the adequate mixture of inorganic oxides causing such final color during the glass melting process. It is written in the literature that green glass can pick up to15% of other colors. And brown glass add up to 8%. For the human eye it is still in the category green and brown glass.
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How Safe Are Your Snacks? Depends on the Packaging!
How healthy your food is depends on a number of factors, such as food type, food additives, contaminants, such as pesticides, microorganisms, veterinary pharmaceuticals, and toxic metals, as well as the packaging. This article focuses on the last step of the food chain, which involves the packaging. The packaging protects the food from physical, chemical or biological issues. Packaging can be in the form of bags, boxes, cans, cartons, pallets, trays, wrappers, etc.
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In Wine There is Truth - The Characterisation and Quantitative Analysis of Wine Using Spectroscopic Methods (Germany)
Here we report the simultaneous measurement of 97 metabolites by triple quadrupole LC/MS/MS using penta uorophenylpropyl column. In this experiment, MRM transitions of these metabolites were optimized and this method was applied to biological samples. Furthermore, to evaluate the accuracy of developed method for quantification, simultaneous analysis by PFPP column was compared to measurement of ion-paring chromatography.
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Water Vapor Permeability Analysis of Food Wrapping Film Using TGA-51
Here we used the TGA-51, an instrument capable of continuously measuring water vapor permeability relatively quickly, to measure this property in 5 types of commercially available food wrapping films.
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Protein Denaturation and Texture Analysis for Chicken
We conducted an overall evaluation of texture in fried chicken heated over different time periods. A DSC was used to measure protein denaturation, and a precision universal testing machine was used to measure the hardness and elasticity.
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Determination of Dimethylpolysiloxanes in Oils Atomic Absorption Spectroscopy
Dimethylpolysiloxanes or methyl silicones are commonly added to fats and oils to prevent oxidative foaming in products used in frying applications. To measure the amount of DMPS, a direct aspiration, flame atomic absorption method is demonstrated.
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