scholarly journals Effect of Cooking and Freezing on Levels of pesticides residues in Local Fresh Fish

2021 ◽  
Vol 78 (2) ◽  
pp. 28
Author(s):  
Akram Rishan ALABOUDI ◽  
Dhary Alewy ALMASHHADANY ◽  
Bashar Suleiman JARRAH
Keyword(s):  
Heat Processing ◽  
Health Conditions ◽  
Tandem Mass ◽  
Grey Mullet ◽  
Maximum Residue Limit ◽  
Cooking Method ◽  
Human Diet ◽  
Limit Values ◽  
Pesticides Residues ◽  
Fresh Fish

Pesticides are an important part of pests controlling strategies. Misuse of such chemicals has been linked to pollution of various environments and toxicities that lead to various health conditions and diseases. Importance of healthy and non-contaminated fish for human diet is essentially required. Samples of 14 local fresh fish (tilapia, grey mullet, and cat fish) were analyzed for seven pesticides (endosulfan, heptachlor, malathion, chlorpyrifos, bifenthrin, deltamethrin, and fenoxycarb) using liquid chromatography with tandem mass spectrometry (LC-MS/MS). Heat processing applied for positive samples by two different cooking method (roasting at 79 °C for 10 min and frying at 210 °C for 40 min) have influenced the levels of studied pesticides and significantly reduced their levels by 53-95%. Freezing preservation of contaminated fish at -70 °C for one month only reduced the level of the pesticides by 6-30%, however, final reduced levels were not below recommended maximum residue limit values.

scholarly journals Sous Vide Pişirme Yönteminin Sebzelerin Besin Değerleri Üzerine Etkisi

2016 ◽  
Vol 4 (11) ◽  
pp. 919
Author(s):  
Serap Coşansu ◽  
Özlem Kıymetli
Keyword(s):  
Nutritional Value ◽  
Vacuum Packaging ◽  
Heat Processing ◽  
Antioxidant Compounds ◽  
Cooking Method ◽  
Heat Stable ◽  
Preservation Method ◽  
Sous Vide ◽  
Major Nutrients

Sous vide is a cooking method in which food is heat processed after vacuum packaging in heat stable pouches. Meat, chicken, fish and vegetables can be cooked by this method; even meals containing these ingredients can be preserved by heat processing after precooking and vacuum packaging steps. Meanwhile sous vide cooking is a preservation method that the product is cooled rapidly after heat processing and can be stored for long periods. By this method, food can be cooked in vacuum packed without losing its flavour, taste and nutritional value. In this review, the effects of sous vide cooking on the major nutrients of vegetables such as antioxidant compounds and vitamins will be mentioned.

scholarly journals Determination of Pesticide Residues in Honey by Single-Drop Microextraction and Gas Chromatography

2011 ◽  
Vol 94 (2) ◽  
pp. 634-644 ◽  
Author(s):  
Nikolaos G Tsiropoulos ◽  
Elpiniki G Amvrazi
Keyword(s):  
Pesticide Residues ◽  
Enrichment Factors ◽  
The European Union ◽  
Maximum Residue Limit ◽  
Single Drop ◽  
Limit Values ◽  
Screening Design ◽  
Single Drop Microextraction ◽  
Central Composite

Abstract A novel, simple, and rapid single-drop microextraction (SDME) procedure combined with GC has been developed, validated, and applied for the determination of multiclass pesticide residues in honey samples. The SDME was optimized using a Plackett-Burman screening design considering all parameters that may influence an SDME procedure and a consequent central composite design to control the parameters that were found to significantly influence the pesticide determination. The developed analytical method required minimal volumes of organic solvents and exhibited good analytical characteristics with enrichment factors ranging from 3 for -endosulfan to 10 for lindane, procymidone, and captan and method quantification limits ranging from 0.03 g/kg for phosalone to 10.6 g/kg for diazinon. The relative recoveries obtained ranged from 70.8 for captan to 120 for fenarimol, and the precision (RSD) ranged from 3 to 15. The proposed SDME procedure followed by GC with an electron capture detector for quantification and GC/MS for identification was applied with success to the analysis of 17 honey samples. Monitoring results indicated a low level of honey contamination by diazinon, chlorpyrifosethyl, procymidone, bromopropylate, and endosulfan (-, -, and endosulfan sulfate) residues that were far below the maximum residue limit values specified by the European Union for endosulfan (10 g/kg) and bromopropylate (100 g/kg) in honey samples.

scholarly journals Development of Formulation and Production Technology of Fish Pate for Therapeutic and Prophylactic Purposes

2019 ◽  
Vol 8 (5C) ◽  
pp. 1355-1359 ◽  
Keyword(s):  
Amino Acids ◽  
Protein Content ◽  
Vegetable Oil ◽  
Production Technology ◽  
Nutritional Value ◽  
Well Being ◽  
Essential Amino Acids ◽  
Health Conditions ◽  
Human Diet ◽  
Production Scheme

This paper presents the method of preparation of fish pate from pike or bream and additionally comprising pumpkin, vegetable oil, seaweed. Detailed fish pate production scheme is described. The developed fish pate has good sensory properties with high nutritional value. The protein content varied from 17.1 to 18.0% with high presence of essential amino acids, such as valine 97.5 mg/100g, isoleucine 93.8 mg/100g, threonine 79.1 mg/100g and tryptophan 18.4 mg/100g. Scientifically grounded fish pate formulation and production technology can lead to enrich human diet with healthy nutrients and improve human well-being and health conditions.

scholarly journals The new gastronomic product: dried and vacuumed rainbow trout roe

2021 ◽  
Vol 45 (1) ◽  
pp. 26-37
Author(s):  
Hülya Turan ◽  
Bengünur Çorapci ◽  
İrfan Emilia Keskin ◽  
Bayram Köstekli ◽  
Asiye Eyuboglu ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Ph Value ◽  
Storage Period ◽  
Total Coliform ◽  
Limit Values ◽  
Crude Lipid ◽  
Fresh Fish ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Limit Value ◽  
Vacuum Degree

In this study, it was aimed to investigate that the effect of drying process on rainbow trout (Oncorhynchus mykiss Walbaum, 1792) roes in terms of the proximate composition, aw, pH, TVB-N, TBARs, microbiological counts and color parameters. Drying was lasted 42 hours including, 18 hours at 30oC and 24 hours at 45oC. The dried fish roes were vacuum-packed (vacuum degree 0.02MPa) and stored at 4oC for 90th days. The crude lipid, crude protein, crude ash and moisture contents of fresh fish roe was 6.67%, 18.51%, 2,67%, and 71.99%, respectively. No change detected in terms of aw value in vacuum packed dried eggs between the first and 90 days (p>0.05). While the pH value of the fresh roe decreased with pretreatments and drying, TVB-N and TBARs value increased. At the end of the storage period, TVB-N value reached to 42.57mgN / 100g. The total mesophilic aerobe bacteria count of dried roes did not exceed the limit value at the end of the storage period. Total anaerobe mesophilic bacteria, Total Coliform, E. coli, H2S producing bacteria (including S. putrefaciens) and Lactic acid bacteria counts of fresh and vacuumed dried roes were below detectable limit values (<0.30 LogCFU/g). In conclusion, it has been determined that vacuum-packed dried rainbow trout roes can be safely consumed for 60 days at ±4oC.

scholarly journals Assessment of Antibiotic and Pesticides Residues in Breast Milk of Syrian Refugee Lactating Mothers

Toxics ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 39 ◽  
Author(s):  
Smadi ◽  
Jammoul ◽  
El Darra
Keyword(s):  
Gas Chromatography ◽  
Breast Milk ◽  
Pesticide Residues ◽  
Occupational Exposures ◽  
Tandem Mass ◽  
Antibiotic Residues ◽  
Pesticides Residues ◽  
Milk Samples ◽  
Syrian Refugee ◽  
Lactating Mothers

Occupational exposures and current diet are both sources of environmental contaminants that can be transferred in the mother’s body. These chemicals can definitely penetrate to the developing foetus and the nursing infant from contaminated breast milk during the lactation period. Nowadays, one of the special interests is the exposure of new-borns to toxic chemicals such as pesticides and antibiotics reported in human milk due to their potential harms, especially developmental deficits in early childhood. The aim of our current study was to assess the occurrence of pesticide residues and antibiotic residues contamination in breast milk collected from Syrian refugee lactating mothers residing in North Lebanon Camps. A total of 120 breast milk samples (40 in triplicate) were collected from camps in Akkar, North Lebanon using an electrical pump. A survey was administrated to determine socio-demographic characteristics, dietary and smoking habits and medical history of participating lactating mothers. The milk samples were analysed for the presence of antibiotic residues and pesticide residues using liquid and gas chromatography tandem mass spectroscopy (LC-MS/MS) and Gas Chromatography-Tandem Mass Spectrometry (GC-MS/MS). This study reported the absence of antibiotic residues in 96.66% of our samples (n = 120) and the presence of pesticides residues in only 5% of our total breast milk sample. Our results considered the breast milk collected from Syrian refugee lactating mothers as safe from chemical contamination. It is worth conducting more studies on other Syrian refugee camps to test the effect of camp living conditions on breast milk safety.

scholarly journals Targeted Multiresidue Method for the Analysis of Different Classes of Pesticides in Agro-Food Industrial Sludge by Liquid Chromatography Tandem Mass Spectrometry

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6888
Author(s):  
Niki C. Maragou ◽  
George Balayiannis ◽  
Evangelos Karanasios ◽  
Emilia Markellou ◽  
Konstantinos Liapis
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Fruits And Vegetables ◽  
Tandem Mass ◽  
Pesticides Residues ◽  
Chromatography Tandem Mass Spectrometry ◽  
Relative Standard ◽  
Liquid Chromatography Tandem Mass ◽  
The Individual

Sludge generated after washing of fruits and vegetables during agro-food processes is a complex matrix and selective methods for the identification and quantification of pesticides’ residues are necessary in order to achieve a sustainable and effective management of the total sewage. The present work describes the development and validation of a reliable, simple and fast analytical method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the determination of 47 pesticides of different chemical classes, including organosphosphates, pyrethroids, neonicotinoids, triazoles and others, in sludge samples after QuEChERS sample preparation. The necessity of the individual steps of QuEChERS was investigated and the LC-ESI-MS/MS conditions were optimized to achieve maximum sensitivity of the target analytes. The method limits of detection (LODs) ranged between 0.0005 mg/kg (imidacloprid) and 0.05 mg/kg (beta cyfluthrin). The recoveries ranged between 71–120% and the repeatability of the method was ≤25% expressed as relative standard deviation. The method was applied to sludge samples generated after washing of fruits in an agro-fruit-packaging unit in Greece. The results showed the presence of 37 pesticides’ active substances with concentrations ranging from low ppbs, such as fludioxinil (5 μg/kg) up to low ppms such as beta cyfluthrin (3.5 mg/kg) and with their sum concentration reaching up to 19 mg/kg.

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