scholarly journals Determination of Leading Commodities and Food Commodities Structure in Sigi Regency of Central Sulawesi Province

2021 ◽  
Vol 672 (1) ◽  
pp. 012034
Author(s):  
R Iskandar ◽  
Rizal ◽  
R Dhandy
Keyword(s):  
Food Commodities ◽  
Central Sulawesi

Determination of Hexachloro-1,3-butadiene in Spinach, Eggs, Fish, and Milk by Electron Capture Gas-Liquid Chromatography

1976 ◽  
Vol 59 (3) ◽  
pp. 552-558
Author(s):  
Martin P Yurawecz ◽  
Peter A Dreifuss ◽  
Laverne R Kamps
Keyword(s):  
Liquid Chromatography ◽  
Petroleum Ether ◽  
Electron Capture ◽  
Mississippi River ◽  
Waste Product ◽  
Official Method ◽  
Gas Liquid Chromatography ◽  
Lower Mississippi River ◽  
Food Commodities

Abstract Hexachloro-1,3-butadiene (HCBD), a waste product formed in the manufacture of perchloroethylene and trichloroethylene, has been found in fish from the lower Mississippi River basin. The AOAC official method for organochlorine pesticide residues in fatty and nonfatty foods has been modified for the determination of HCBD residues in selected food commodities. Acetonitrile extracts of nonfatty foods, or the combined acetonitrile extracts obtained in acetonitrile-petroleum ether partitioning of fat isolated from fatty foods, are diluted with water and extracted with petroleum ether. The petroleum ether extracts are chromatographed on Florisil and HCBD is eluted with petroleum ether. The eluate is analyzed by gas-liquid chromatography with an electron capture detector. Average recoveries of HCBD from fortified samples of fatty and nonfatty foods were greater than 90% in the interlaboratory trials of the method.

scholarly journals Simultaneous Determination of Eight Synthetic Permitted and Five Commonly Encountered Nonpermitted Food Colors in Various Food Matrixes by High-Performance Liquid Chromatography

2010 ◽  
Vol 93 (5) ◽  
pp. 1503-1514 ◽  
Author(s):  
Sumita Dixit ◽  
Subhash K Khanna ◽  
Mukul Das
Keyword(s):  
Simultaneous Determination ◽  
High Performance ◽  
High Sensitivity ◽  
Gradient Elution ◽  
Reversed Phase ◽  
Hplc Method ◽  
Food Category ◽  
Food Commodities ◽  
Food Colors

Abstract A simple and sensitive HPLC method has been developed for the simultaneous determination of eight permitted food colors and five commonly encountered nonpermitted colors in various food commodities, including sugar-, fat-, and starch-based food matrixes. The method uses a specific food category-based cleanup/treatment procedure before color extraction to avoid the interference of food matrixes, and to obtain the optimal color extraction. Analysis was performed on a reversed-phase C18 -Bondapak column with ammonium acetate and acetonitrile gradient elution as the mobile phase; a programmable max-specific visible detection was used to monitor colors to obtain the higher sensitivity and expanded scope needed for multicolor blends having diverse absorption maxima. All colors showed good linearity, with regression coefficients of 0.99740.9999. The LOD and LOQ values ranged from 0.01 to 0.12 mg/L, and from 0.04 to 0.83 mg/L or mg/kg, respectively. The intraday and interday precision tests produced good RSD values, and the recoveries from different food matrixes ranged from 82 to 104%. The method offers high sensitivity for analysis of a wide variety of food matrixes containing a broad scope of multicolor blends. Two nonpermitted colors, orange II and metanil yellow, were found. Also, a number of samples contained permitted colors at levels two-to seven-fold higher than those prescribed.

scholarly journals Visual-test and Sorption-spectrophotometric Determination of Melamine in Biological Objects

2015 ◽  
Vol 3 (2) ◽  
pp. 125-130
Author(s):  
Olga Zaporozhets ◽  
Natalia Smyk ◽  
Daria Rudakova
Keyword(s):  
Protein Concentration ◽  
Test Methods ◽  
Calibration Graph ◽  
The Body ◽  
Detection Methods ◽  
Visual Test ◽  
Sorption Concentration ◽  
Food Commodities ◽  
Reliable Methods

Melamine may have toxic effects on humans and animals. It is well known that melamine accumulates in the body and causes reproductive damages, forms bladder or kidney stones, which can lead to bladder cancer. Trace amounts of melamine at ppm levels may occur in certain food commodities due to its migration from melamine-containing disposable tableware plastics. It was intentionally adulterated to milk products to show a false increase in protein concentration. Considering these facts there is a need for establishing sensitive and reliable methods of melamine determination. As uncostly, rapid and selective melamine detection methods are highly required, the hyphenated sorption-spectrophotometric and visual test methods seem to be perspective candidates. In the present work the optimal conditions of sorption concentration of melamine from aqueous solutions ontо the silica gel surface were studied. The calibration graph for the sorption-spectrophotometric method is linear in 0.02 – 9.8 μmol.L-1 mg L-1 melamine concentration range. Proposed method allows naked-eye monitoring of biological samples.

scholarly journals Acrylamide Content in Food Commodities Consumed in North Macedonia and Its Risk Assessment in the Population

2019 ◽  
Author(s):  
E. Dimitrieska-Stojkovikj ◽  
A. Angeleska ◽  
B. Stojanovska-Dimzoska ◽  
Z. Hajrilai-Musliu ◽  
D. Koceva ◽  
...  
Keyword(s):  
Risk Assessment ◽  
High Performance ◽  
Dietary Exposure ◽  
Mitigation Strategies ◽  
Rich Food ◽  
Average Intake ◽  
Thermally Processed ◽  
Food Commodities ◽  
Tandem Quadrupole

Background: Acrylamide (AA) is an important food contaminant resulted from Maillard reaction during thermal processing of carbohydrate rich food commodities. The present paper reports the data for the AA content in some types of thermally processed starch rich food, and assessment of dietary exposure for the population in North Macedonia. Methods: The AA level was determined employing modified and validated ultra high performance liquid chromatography with tandem quadrupole detector. A total of 160 samples divided in seven most frequently consumed commodity groups were collected for determination of their AA content. Finally, chronic exposure of AA in the population was estimated. Statistical analysis was performed applying OriginPro 8 SR4 v8.0951 software package Results: The average AA levels varied from 126.9±122.4 μg/kg for bread samples to 494.5±127.1 μg/kg for French fries samples. The dietary exposure of the population from North Macedonia for the tested food commodities was estimated at 0.643±0.171 μgAA/kgbw/day. The main contributor to the total AA intake was bread, with estimated value at 0.394±0.150 μgAA/kgbw/day. The margin of exposure values were 528 and 264, respectively for neurotoxicity and non-plastic effect calculated on average intake. Conclusion: The risk assessment analysis revealed increased concern for human health regarding the neoplastic effects, especially for infants, toddlers, and adolescents. This is the first study related to AA presence in different food commodities in North Macedonia, and implies that monitoring programs and mitigation strategies must be implemented.

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