Home / Product / determination of selenium in food test machine

determination of selenium in food test machine

The main products are food processing equipment, wood processing equipment, agricultural equipment, packaging machinery, etc. Our equipment has been widely praised in the domestic and foreign markets.

AND SELENIUM DETERMINATION IN FOOD

food of plant origin, which in turn requires sensitive and accurate methods for their determination. Numerous techniques have been developed for determination of low mercury and selenium levels in food and environmental samples (8, 9). However, only neutron activation analysis and, additionally, fluorometry for selenium meet the re-

View More

Determination of selenium in foodstuffs using ...

Dec 01, 1992  Use of transition elements to enhance sensitivity for selenium determination by graphite furnace atomic absorption spectrophotometry combined with the APDC-MIBK system. Talanta 27,473-476. KOH, T-S., AND BENSON,T. H. (1983). Critical re-appraisal of fluorometric method for determination of selenium in biological materials. J.

View More

Determination of selenium in food and environmental ...

Dec 01, 2020  The proposed method was applied successfully for the determination of selenium in agricultural food (tea, rapeseed sprouts, peanut) and environmental (tap water and lake water) samples. The results showed that the average levels of selenium were 0.04−0.27 mg/kg and not detectable, in agricultural food and water, respectively.

View More

Determination of selenium in selected food samples from ...

Oct 15, 2012  Highlights We optimise a methodology for determining total selenium in food matrices. We study selenium content in selected high consumption food from Argentinean diet. We estimate their contribution to the Se dietary intake. This information is currently scarce or absent in Argentina. More survey is strongly recommended from results suggesting a deficient Se intake.

View More

Analytical Methods of Selenium Determination

Abstract. Selenium occurs naturally in biological materials that vary from a few parts per billion to a few per cent. Methods for its determination, therefore, cover a wide range of concentrations. As a result there have been developed a number of procedures for selenium analysis.

View More

Determination of selenium in nutritionally relevant foods ...

Nov 01, 2005  The efficiency of arsenic as internal standard for Se determination in nutritionally relevant foods was also evaluated by means of correlation graphs (Mermet Ivaldi, 1993). As example, twenty consecutive measurements of a solution containing 25 μg L −1 Se plus 500 μg L −1 As in a coconut water sample in the presence of W/Rh as permanent ...

View More

Determination of Different Selenium Species in Selenium ...

Jun 29, 2021  To ensure reasonable intake of selenium for humans and provide insights on the development and nutritional analysis of high-quality selenium-enriched food, we established a reliable and highly sensitive method for the determination of selenium species in Z0206 selenium-enriched polysaccharide (Se-EPS). By optimizing the pre-treatment conditions (different enzymes, enzyme combinations ...

View More

A practical method for the determination of total selenium ...

Oct 04, 2016  A safe, practical, and accurate method for the determination of selenium (Se) in range of environmental samples was developed. Small sample masses, 5–20 mg, were amended with 82Se enriched isotope for the iso-tope dilution (ID), preceding a multi-step wet digestion with nitric acid (HNO 3) and hydrogen peroxide (H 2O 2). Samples were ...

View More

Determination of Selenium in Common and Selenium

Jun 26, 2020  rice samples and 211 selenium-enriched rice samples were collected in this study. 2.2. Sample Pretreatment for Total Selenium Detection Referring to the National Standards of China, GB5009.93-2017 “Food Safety National Standard - The Determination of Selenium in Food”, inductively coupling plasma mass spectrometry (ICP-MS) method were used.

View More

7. ANALYTICAL METHODS

selenium compounds in biological fluids and tissues, and Table 7-2 lists the methods used for determining selenium in environmental samples. 7.1 BIOLOGICAL MATERIALS . Sampling of biological material for determination of total selenium concentrations does not usually pose a problem unless specific selenium compounds are to be identified (Bem 1981).

View More

IJERPH Free Full-Text Determination of Selenium in ...

In this study, 41 common rice varieties and 211 selenium-rich rice varieties from ten representative areas in China were collected in 2017ndash;2019. The selenium contents of rice were analyzed with optimized inductively coupled plasma mass spectrometry (ICP-MS). Selenium concentrations of common rice and selenium-rich rice ranges were 0.81ndash;7.26 and 0.76ndash;180.73 micro;g/100 g ...

View More

Determination of selenium compounds in food supplements ...

Sep 01, 2013  Highlights Selenium compounds in food supplements were determined using HLPC–ICP-MS. Ar dimer ion interferences on Se determination were suppressed with CH 4 as the DRC reaction gas. Selenium species were quantitatively extracted using microwave heating. γ-Glutamyl-methyl-Se-cysteine was identified in Selenium Tablet using ESI-MS/MS.

View More

Electronic Supplementary Information Determination of ...

determination by HG-HR-CS-QFAAS; • Se content in test samples; • Daily intake of Se in adults and teenagers . via. foods and dietary supplements analyzed in this study. Se role in humans and plants health and toxicity . Chemistry of Se and its metabolism play a crucial role in s, animals and planthumans health. 1

View More

Accurate and Sensitive Analysis of Arsenic and Selenium in ...

Food Testing and Agriculture Introduction Concern about the impact on public health from potentially toxic elements and compounds present in everyday foodstuff has led to new legislative guidance. The inorganic forms of arsenic (As) are known to be toxic and carcinogenic to humans, and food and drink are a potential source of exposure [1].

View More

DETERMINATION OF TOTAL SELENIUM AND SELENO

determination of total selenium and seleno-amino acids in yeast and aquatic organisms by liquid chromatography and inductively coupled plasma mass spectrometry

View More

Determination of selenium content in selected Pakistani foods

It was applied to the determination of total selenium in samples of cow's milk (fluid and powder) and infant formulae. Linearity was satisfactory in the range up to 27.5 mg L À1 (h ¼ 0.082 C + 0 ...

View More

Simulation Analysis on Determination Technology of ...

and other aspects. The main intake of selenium for human is from food, and marine organisms are publically recognized which is enriched if Se. Therefore, the determination of the Se content is very important. Se is a rare element, the average abundance value in the earth's crust is

View More

Application of ICP techniques for food analysis

Determination of Elements in Food Using Microwave Assisted Digestion” EAM4.7 “Inductively Coupled Plasma - Mass Spectrometric Determination of Arsenic, Cadmium, Chromium, Lead, Mercury, and Other Elements in Food Using Microwave Assisted Digestion” EAM4.8 “High Pressure Liquid Chromatographic -

View More

Distribution of selenium in selenite-enriched soybean

the total selenium content minus inorganic selenium content. The contents of selenium in different speciation were indicated in table 2. In soybean grain, selenium mainly existed in the form of organic selenium, covering 84% -91% of the total selenium contents, while inorganic selenium makes up a smaller proportion ,

View More

General methods of tests and analysis for food products

67.050 . 67.050. Foodstuffs — Principles of selection and criteria of validation for varietal identification methods using specific nucleic acid. Molecular biomarker analysis — Determination of the performance characteristics of qualitative measurement methods and validation of methods.

View More

Determination of Selenium Concentration in Fish Meat Samples

Determination of Selenium in Fish Meat by HG-AFS Selenium is one of the essential trace elements found in the human body. Various diseases are related to the lack of selenium, given that this element is important for metabolism, health and growth.

View More

Elemental Analysis Manual - Section 4 - Food and Drug ...

Elemental Analysis Manual for Food and Related Products. 4.4 Inductively Coupled Plasma-Atomic Emission Spectrometric Determination of Elements in Food Using Microwave

View More

Analytical Methods for Atomic Absorption Spectroscopy

COOKBOOK.DOC, 9/10/96 1:41 PM Safety Information The Analytical Methods section describes methodologies using a wide variety of potentially hazardous chemicals (acids, bases, organic

View More

A Guide To Kjeldahl Nitrogen Determination Methods and ...

at the time. His method used simple equipment and could be performed by an inexperienced technician. Applications Since 1883, the Kjeldahl method has gained wide acceptance and is now used for a variety of applications. Kjeldahl nitrogen determinations are performed on food and beverages, meat, feed, grain, waste water, soil and many other samples.

View More

Determination of selenium in food and environmental ...

The paper presents a method for Se determination in a wide variety of food and environmental samples by hydride generation high-resolution continuum source quartz furnace atomic absorption spectrometry. The method was found to be free from spectral interference

View More

Semi-Automated Method for Determination of Selenium in ...

Abstract Automted equipment is used to generate selenium hydride from solutions of rock samples prepared by digestion with a mixture of hydrofluoric, perchloric, and nitric acids. The evolved hydride is swept by argon into an electrically heated quartz tube atomizer. The atomic absorption of Se is measured at 196.0 nm. 1, 10-phenanthroline is used to minimize interferences from copper and nickel.

View More

Determination of selenium content in selected Pakistani foods

It was applied to the determination of total selenium in samples of cow's milk (fluid and powder) and infant formulae. Linearity was satisfactory in the range up to 27.5 mg L À1 (h ¼ 0.082 C + 0 ...

View More

Elemental Analysis Manual - Section 4 - Food and Drug ...

Elemental Analysis Manual for Food and Related Products. 4.4 Inductively Coupled Plasma-Atomic Emission Spectrometric Determination of Elements in Food Using Microwave

View More

Studies in the Atomic Spectrometric Determination of ...

selenium in dietary supplements using anion-exchange chromatography ICP-MS. A novel method for the determination of total mercury at trace concentrations in rice was developed for use with conventional ICP-MS. Inductively coupled plasma mass spectrometry was also used for fingerprinting the rare earth elements in Maya

View More

Determination of selenium concentration in rice and the ...

May 13, 2002  Determination of selenium concentration in rice and the effect of foliar application of Se-enriched fertiliser or sodium selenite on the selenium content of rice. Qiuhui Hu, Corresponding Author. [email protected]; College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. College of Food Science and ...

View More

(PDF) Certified reference materials for quality control of ...

mercury and selenium determination in food using CRMs as is the condition of ana- lytical instruments, since both steps may bring losses and contamination (5, 8–10).

View More

Simulation Analysis on Determination Technology of ...

and other aspects. The main intake of selenium for human is from food, and marine organisms are publically recognized which is enriched if Se. Therefore, the determination of the Se content is very important. Se is a rare element, the average abundance value in the earth's crust is

View More

The Development of Analytical Methods for the ...

1.7.4. Selenium and heart disease 25 1.8. EFFECTS OF HIGH SELENIUM INTAKE ON MAN 29 1.9. REFERENCES 31 Chapter 2. ANALYTICAL METHODS FOR THE DETERMINATION OF SELENIUM IN BIOLOGICAL MATRICES 35 2.1. INTRODUCTION 36 2.2. STANDARD REFERENCE MATERIALS 36 2.3. ATOMIC ABSORPTION SPECTROMETRY 37 2.3.1. Graphite furnace AAS 37 2.3.2. Hydride generation ...

View More

Distribution of selenium in selenite-enriched soybean

the total selenium content minus inorganic selenium content. The contents of selenium in different speciation were indicated in table 2. In soybean grain, selenium mainly existed in the form of organic selenium, covering 84% -91% of the total selenium contents, while inorganic selenium makes up a smaller proportion ,

View More

Application of Isotope Dilution Analysis for the ...

Isotope dilution analysis (IDA) has been used to quantify total selenium, total solubilized selenium, and the selenomethionine (SeMet) amount in yeast and yeast-based nutritional supplements after acid microwave digestion and different enzymatic extraction procedures. For this purpose, both a 77Se-enriched SeMet spike, previously synthesized and characterized in our laboratory, and a 77Se(VI ...

View More

(PDF) COMPARISON OF TWO METHODS FOR DESTRUCTION OF ...

Gawalko EJ, Nowicki TW, Babb J, et al. Comparison of closed-vessel and focused open- vessel microwave dissolution for determination of cadmium, copper, lead, and selenium in Matek M, Blanu{a M: DESTRUCTION OF FOOD SAMPLES FOR SELENIUM A N A LYSIS Arh hig rada toksikol, Vol 49 (1998) No 4, pp. 301 305 305 wheat, wheat products, corn bran, and ...

View More

A Guide To Kjeldahl Nitrogen Determination Methods and ...

at the time. His method used simple equipment and could be performed by an inexperienced technician. Applications Since 1883, the Kjeldahl method has gained wide acceptance and is now used for a variety of applications. Kjeldahl nitrogen determinations are performed on food and beverages, meat, feed, grain, waste water, soil and many other samples.

View More

Nitrogen Determination by Kjeldahl Method

Nitrogen Determination by Kjeldahl Method ... used for the determination of nitrogen in a wide range of samples. The determination of Kjeldahl nitrogen is made in foods and drinks, meat, feeds, cereals and forages for the calculation of the ... Typical catalysts are selenium or metal salts of copper or titanium.

View More

Request a Quote