scholarly journals Analytical Methods for Determination of Non-Nutritive Sweeteners in Foodstuffs

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3135
Author(s):  
Viki Oktavirina ◽  
Nadhila B. Prabawati ◽  
Rohmah Nur Fathimah ◽  
Miguel Palma ◽  
Kiki Adi Kurnia ◽  
...  
Keyword(s):  
Analytical Methods ◽  
High Intensity ◽  
Low Cost ◽  
Food Products ◽  
Lower Amount ◽  
Food Matrix ◽  
Food Industries ◽  
Obesity And Diabetes ◽  
Non Destructive

Sweeteners have been used in food for centuries to increase both taste and appearance. However, the consumption of sweeteners, mainly sugars, has an adverse effect on human health when consumed in excessive doses for a certain period, including alteration in gut microbiota, obesity, and diabetes. Therefore, the application of non-nutritive sweeteners in foodstuffs has risen dramatically in the last decade to substitute sugars. These sweeteners are commonly recognized as high-intensity sweeteners because, in a lower amount, they could achieve the same sweetness of sugar. Regulatory authorities and supervisory agencies around the globe have established the maximum amount of these high-intensity sweeteners used in food products. While the regulation is getting tighter on the market to ensure food safety, reliable analytical methods are required to assist the surveillance in monitoring the use of high-intensity sweeteners. Hence, it is also necessary to comprehend the most appropriate method for rapid and effective analyses applied for quality control in food industries, surveillance and monitoring on the market, etc. Apart from various analytical methods discussed here, extraction techniques, as an essential step of sample preparation, are also highlighted. The proper procedure, efficiency, and the use of solvents are discussed in this review to assist in selecting a suitable extraction method for a food matrix. Single- and multianalyte analyses of sweeteners are also described, employing various regular techniques, such as HPLC, and advanced techniques. Furthermore, to support on-site surveillance of sweeteners’ usage in food products on the market, non-destructive analytical methods that provide practical, fast, and relatively low-cost analysis are widely implemented.

The Use of Non-Destructive Instrumental Methods in the Determination of Metal Objects from the Asian Collection of the Náprstek Museum

2016 ◽  
Vol 37 (1) ◽  
pp. 93-102
Author(s):  
Dagmar Pospíšilová ◽  
Michal Pech ◽  
Michael Kotyk
Keyword(s):  
Analytical Methods ◽  
Instrumental Methods ◽  
Non Destructive

The article presents a methodical survey of standard non-destructive analytical methods applied recently to metal objects in the museum. These methods have helped to classify and describe particular pieces in the museum’s collection of metal objects in a more complex ethnological, historical and museological context.

DEVELOPMENT OF NON-DESTRUCTIVE RAPID AND LOW-COST ANALYTICAL TECHNIQUE FOR THE DETERMINATION OF THE FRESHNESS STATE OF STURGEON SPECIES IMMERSED IN NIGHTSHADE SOLUTION

2020 ◽  
pp. 380-382
Author(s):  
M. Egorov ◽  
E. Kondratenko ◽  
R. Karoui
Keyword(s):  
Fluorescence Spectroscopy ◽  
Low Cost ◽  
Front Face ◽  
Analytical Technique ◽  
Sturgeon Species ◽  
Non Destructive ◽  
Chemometric Tools

The present study demonstrates the potential of front-face fluorescence spectroscopy coupled with chemometric tools as a rapid and non-destructive method to monitor the freshness level of sturgeon.

scholarly journals Determination of the zinc and cadmium contents in low-alloyed tin

1999 ◽  
Vol 64 (11) ◽  
pp. 707-720
Author(s):  
N.Z. Blagojevic ◽  
R.M. Zejnilovic ◽  
A.R. Despic ◽  
Z. Blecic
Keyword(s):  
Thin Layer ◽  
Solid Solutions ◽  
Analytical Methods ◽  
Linear Sweep Voltammetry ◽  
Sweep Rate ◽  
Eutectic Type ◽  
Linear Sweep ◽  
Low Concentrations ◽  
Non Destructive

The method of anodic linear sweep voltammetry (ALSV) has been used to determine the content of Zn and Cd (up to 4% w/w) in eutectic type binary alloys with Sn. The alloy samples were prepared by casting. The effect of the type and the pH of the electrolyte, as well as of the sweep-rate on the dissolution of Zn and Cd from the alloy during an anodic potentinal-sweep was investigated. It was shown that ALSV is sensitive to low concentrations of both Zn and Cd in the investigated alloys, as well-defined peaks of the dissolution of the two metals were recorded before the massive dissolution of Sn commenced. Well-defined linear dependencies between the quantities of electricity under the dissolution peaks of Zn (QZn) or Cd (QCd) and the respective contents of the metals in the alloys were found. Intercepts at the abscissa were found in both investigated systems indicating the formation of solid solutions from which neither Zn norCd could be eluted. In both alloys, the smallest amount of the alloying component which could be detected was 0.25% (w/w). The application of the ALSV method has several advantages over other analytical methods: it is non-destructive as the dissolution involves only a very thin layer of the alloy; it requires simple and cheap instrumentation; it is fast and relatively sensitive. These make it suitable for routine analysis.

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.

scholarly journals The Examination of Restrained Joints Created in the Process of Multi-material FFF Additive Manufacturing Technology

2020 ◽  
Author(s):  
Janusz Kluczynski ◽  
Lucjan Sniezek ◽  
Alexander Kravcov ◽  
Krzysztof Grzelak ◽  
Pavel Svoboda ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Acrylonitrile Butadiene Styrene ◽  
Tensile Tests ◽  
Lower Amount ◽  
Internal Quality ◽  
Experimental Production ◽  
Destructive Testing ◽  
Non Destructive

The paper is focused on the examination of the internal quality of joints created in a multi-material - additive manufacturing process. The main part of the work focuses on experimental production and non-destructive testing of restrained joints of modified PLA (polylactic acid) and ABS (Acrylonitrile butadiene styrene) 3Dprinted on RepRap 3D device that works on the "open source" principle. The article presents the outcomes of non-destructive materials test in the form of the data from the Laser Amplified Ultrasonography, microscopic observations of the joints area and tensile tests of the specially designed samples. The samples with designed joints were additively manufactured of two materials: specially blended PLA (Market name – PLA Tough) and conventionally made ABS. The tests are mainly focused on the determination of the quality of material connection in the joints area. Based on the results obtained, the samples made of two materials were compared in the end to establish which produced material joint is stronger and have a lower amount of defects.

scholarly journals Applications of Non-destructive Technologies for Agricultural and Food Products Quality Inspection

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 846 ◽  
Author(s):  
Hany El-Mesery ◽  
Hanping Mao ◽  
Abd Abomohra
Keyword(s):  
Safety Evaluation ◽  
Food Products ◽  
Quality And Safety ◽  
Food Industries ◽  
Food Quality And Safety ◽  
Quality Of Food ◽  
To Come ◽  
Non Destructive ◽  
Destructive Methods

The quality and safety of food is an increasing concern for worldwide business. Non-destructive methods (NDM), as a means of assessment and instrumentation have created an esteemed value in sciences, especially in food industries. Currently, NDM are useful because they allow the simultaneous measurement of chemical and physical data from food without destruction of the substance. Additionally, NDM can obtain both quantitative and qualitative data at the same time without separate analyses. Recently, many studies on non-destructive detection measurements of agro-food products and final quality assessment of foods were reported. As a general statement, the future of using NDM for assessing the quality of food and agricultural products is bright; and it is possible to come up with interesting findings through development of more efficient and precise imaging systems like the machine vision technique. The present review aims to discuss the application of different non-destructive methods (NDM) for food quality and safety evaluation.

Analytical methods for the determination of acrylamide in food products: a review

2003 ◽  
Vol 20 (10) ◽  
pp. 885-902 ◽  
Author(s):  
T. Wenzl ◽  
M. Beatriz de la Calle ◽  
E. Anklam
Keyword(s):  
Analytical Methods ◽  
Food Products

scholarly journals Low-Cost Sensors for Determining the Variation in Interior Moisture Content in Gypsum Composite Materials

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5831
Author(s):  
Daniel Ferrández ◽  
Carlos Morón ◽  
Pablo Saiz ◽  
Evangelina Atanes-Sánchez ◽  
Engerst Yedra
Keyword(s):  
Building Materials ◽  
Low Cost ◽  
Capacitive Sensor ◽  
Mechanical Resistance ◽  
X Ray Diffraction ◽  
Destructive Testing ◽  
Measuring Devices ◽  
Setting Process ◽  
Non Destructive

Non-destructive testing can be used to determine some of the most relevant physical properties of building materials. In this work, two low-cost measuring devices were developed capable of determining the variation in real-time of the percentage of humidity that is produced in the construction of gypsum and plaster during the hardening process. For this, an Arduino resistive sensor and a capacitive sensor of our design were used. The results show how it is possible to determine the variations in mixing water content during the seven days of curing established by the UNE-EN 13279-2 standard as well relate to the mechanical resistance of the test specimens with the same percentage of humidity. Additionally, the study was completed with the determination of the formation of the dihydrate compound linked to this setting process in the test specimens by conducting X-ray diffraction and thermogravimetric analysis tests at different ages of the samples.

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