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https://www.readbyqxmd.com/read/29172986/bisphenol-a-and-bisphenol-s-release-in-milk-under-household-conditions-from-baby-bottles-marketed-in-italy
#1
Giacomo Russo, Francesco Barbato, Eleonora Cardone, Margherita Fattore, Stefania Albrizio, Lucia Grumetto
A simple and sensitive validated analytical method based on liquid chromatography coupled to tandem fluorescence (FD) and ultraviolet (UV) spectrophotometry was applied to monitor the presence of bisphenol A and bisphenol S in plastic baby bottles marketed in Italy. The limits of detection (LOD) were 3.75 ng mL-1 and 80.00 ng mL-1, and those of quantification (LOQ) were 12.51 ng mL-1 and 260.00 ng mL-1 for BPA (FD detection) and for BPS (UV detection), respectively. BPA was found in only four samples, two samples undergone to microwave heating and two samples undergone to bottle warmer heating either at 40°C or at 80°C...
November 27, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29165479/evaluation-of-the-impact-of-food-matrix-change-on-the-in-vitro-bioaccessibility-of-carotenoids-in-pumpkin-cucurbita-moschata-slices-during-two-drying-processes
#2
Zhongyuan Zhang, Xiaoyan Wang, Yixiang Li, Qiuyu Wei, Chunju Liu, Meimei Nie, Dajing Li, Yadong Xiao, Chunquan Liu, Lang Xu, Min Zhang, Ning Jiang
The food matrix is a limiting factor in determining the bioaccessibility of carotenoids. The impact of food matrix change on the bioaccessibility of carotenoids during drying processes is still unknown. The effect of intermittent microwave vacuum-assisted drying (IMVD) and hot air drying (HAD) on the in vitro liberation and micellization of carotenoids in pumpkin slices was studied. This variable depended on the changes of the matrix driven by the drying process. Different changes in the cell morphology and carotenoid distribution of pumpkin slices during the two processing methods were observed...
November 22, 2017: Food & Function
https://www.readbyqxmd.com/read/29145136/lead-cadmium-and-arsenic-in-human-milk-and-their-socio-demographic-and-lifestyle-determinants-in-lebanon
#3
Maya Bassil, Farah Daou, Hussein Hassan, Osama Yamani, Joelle Abi Kharma, Zouheir Attieh, Jomana Elaridi
INTRODUCTION: Exposure of newborns to toxic metals is of special interest due to their reported contamination in breast milk and potential harm. The aim of this study was to assess the occurrence and factors associated with lead, cadmium and arsenic contamination in breast milk collected from lactating mothers in Lebanon. METHODS: A total of 74 breast milk samples were collected from primaparas according to guidelines set by the World Health Organization. A survey was administered to determine the demographic and anthropometric characteristics of participating lactating mothers...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29143440/use-of-innovative-micro-extraction-techniques-to-characterise-harpagophytum-procumbens-root-and-its-commercial-food-supplements
#4
Alina Diuzheva, Simone Carradori, Vasil Andruch, Marcello Locatelli, Elisa De Luca, Matteo Tiecco, Raimondo Germani, Luigi Menghini, Alessio Nocentini, Paola Gratteri, Cristina Campestre
INTRODUCTION: For the determination of harpagoside and the wide phenolic pattern in Harpagophytum procumbens root and its commercial food supplements, dispersive liquid-liquid microextraction (DLLME), ultrasound-assisted DLLME (UA-DLLME), and sugaring-out liquid-liquid extraction (SULLE) were tested and compared. OBJECTIVES: In order to optimise the extraction efficiency, DLLME and UA-DLLME were performed in different solvents (water and aqueous solutions of glucose, β-cyclodextrin, (2-hydroxypropyl)-β-cyclodextrin, sodium chloride, natural deep eutectic solvent, and ionic liquid)...
November 16, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/29100872/bioaccesibility-of-cylindrospermopsin-from-cooked-fish-muscle-after-the-application-of-an-in-vitro-digestion-model-and-its-bioavailability
#5
Sara Maisanaba, Federica Saladino, Guillermina Font, Ángeles Jos, Ana M Cameán, Giuseppe Meca
Humans can be exposed to cyanotoxins through the ingestion of contaminated water, food or beverages. In the present work, the bioaccesibility of Cylindrospermopsin (CYN), one of the most relevant cyanotoxins, was evaluated in a pure CYN solution and cooked CYN-contaminated fish muscles (20 μg/mL). An in vitro digestion model including the salivar, gastric, duodenal and colonic phases was performed, being each fraction analyzed by HPLC-MS-MS to evaluate CYN degradation. Moreover, Caco-2/TC7 cells were exposed to the digested duodenal and colonic phases to elucidate the final bioavailability of CYN in an approximation to the real human exposure scenario...
October 31, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29099795/microwave-assisted-extraction-of-cannabinoids-in-hemp-nut-using-response-surface-methodology-optimization-and-comparative-study
#6
Chih-Wei Chang, Ching-Chi Yen, Ming-Tsang Wu, Mei-Chich Hsu, Yu-Tse Wu
Hemp nut is commonly incorporated into several food preparations; however, most countries set regulations for hemp products according to their cannabinoid content. In this study, we have developed an efficient microwave-assisted extraction (MAE) method for cannabinoids (i.e., Δ9-tetrahydrocannabinol, cannabidiol, and cannabinol) in hemp nut. Optimization of the MAE procedure was conducted through single factor experiments and response surface methodology (RSM). A comparative study was also conducted to determine the differences in the extraction yields and morphology of hemp nut between MAE and reference extraction methods, namely heat reflux extraction (HRE), Soxhlet extraction (SE), supercritical fluid extraction (SFE), and ultrasound-assisted extraction (UAE)...
November 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29055976/the-influence-of-microwave-cooking-on-the-nutritional-composition-and-antioxidant-activity-of-the-underutilized-perah-seed
#7
Khu S Li, Abbas Ali, Ida I Muhammad
BACKGROUND: Perah seed is one of the most underutilized oilseeds, containing high nutritional values and high percentage of α-linoleneic acid, which may have a high potential in food and pharmaceutical applica- tions. The main objective of this study was to evaluate the influence of microwave (MW) cooking on the proximate composition and antioxidant activity of perah seeds. METHODS: In this study, the proximate composition and amygdalin concentration of MW ir- radiated perah seeds were determined...
July 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/29051665/effects-of-microwave-heating-of-wheat-on-its-functional-properties-and-accelerated-storage
#8
Chenling Qu, Hongliang Wang, Shengqiang Liu, Fangting Wang, Chang Liu
The effect of microwave heating wheat grains (700 W for 0-60 s) on gluten, farinograph, pasting properties and baking (steamed bread and biscuit) of flour was studied. The lipase (LA) and lipoxygenase (LOX) activities of the microwave-treated wheat were monitored, and the accelerated storage at 35 °C of whole wheat flour was also investigated. The results showed that the gluten, farinograph properties and viscosity were influenced to a small extent when microwave treatment time was less than or equal to 20 s and the temperature of the grains was less than or equal to 56 °C...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29020850/household-food-security-and-hiv-status-in-rural-and-urban-communities-in-the-free-state-province-south-africa
#9
Michélle Pienaar, Francois C van Rooyen, Corinna M Walsh
Higher socioeconomic status impacts profoundly on quality of life. Life-event stressors, such as loss of employment, marital separation/divorce, death of a spouse and food insecurity, have been found to accelerate disease progression among people with human immunodeficiency virus (HIV). The objective of this study was to determine significant independent sociodemographic and food security factors associated with HIV status in people from rural and urban communities in the Assuring Health for All study, which was undertaken in rural Trompsburg, Philippolis and Springfontein and urban Mangaung, in the Free State Province of South Africa...
December 2017: SAHARA J: Journal of Social Aspects of HIV/AIDS Research Alliance
https://www.readbyqxmd.com/read/28974799/targeting-the-middle-region-of-cp4-epsps-protein-for-its-traceability-in-highly-processed-soy-related-products
#10
Honghong Wu, Xiaofu Wang, Xinghu Zhou, Yihua Zhang, Ming Huang, Jian He, Wenbiao Shen
Transgenic components in genetically modified organisms consist not only of the transgenic genes, but also the transgenic protein. However, compared with transgenic DNA, less attention has been paid to the detection of expressed protein, especially those degraded from genetically modified soybean after food processing. In this study, the full length 5-enolpyruvyl-shikimate-3-phosphate synthase (CP4-EPSPS, 47.6 kD) protein was probed with the SC-16 (S19-R33) and the DC-16 (D219-K233) polyclonal antibodies in immunoblots...
September 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28967221/rheological-and-sensory-behaviors-of-parboiled-pasta-cooked-using-a-microwave-pasteurization-process
#11
Helen S Joyner, Kari E Jones, Barbara A Rasco
Pasta hydration and cooking requirements make in-package microwave pasteurization of pasta a processing challenge. The objective of this study was to assess instrumental and sensory attributes of microwave-treated pasta in comparison to conventionally cooked pasta. Fettuccine pasta was parboiled for 0, 3, 6, 9, or 12 min, pasteurized by microwaves at 915 MHz, then stored under refrigeration for 1 week. Pastas were evaluated by a trained sensory panel and with rheometry. Total pasta heat treatment affected both rheological and sensory behaviors; these differences were attributed to ultrastructure differences...
October 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28950032/structural-features-antitumor-and-antioxidant-activities-of-rice-bran-polysaccharides-using-different-extraction-methods
#12
Wenfang Han, Jiangtao Li, Yuqin Ding, Shanbai Xiong, Siming Zhao
In this study, rice bran polysaccharides (RBP) were extracted using the hydrothermal method (RBP-H), microwave-assisted extraction (RBP-M) and enzyme-assisted extraction (RBP-E). The prepared RBP samples exhibited the typical spectral patterns of polysaccharides, but differed in chemical composition, molecular features, antitumor and antioxidant activities. The molecular weights (Mw) of RBP-H, RBP-M, and RBP-E were 1.03 × 10(5) , 2.62 × 10(5) , and 0.46 × 10(5) g/mol, respectively. In vitro, all RBP samples significantly inhibited mouse sarcoma S180 cells viability in a dose-dependent manner...
October 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28946325/fast-cleavage-of-phycocyanobilin-from-phycocyanin-for-use-in-food-colouring
#13
Maria Cinta Roda-Serrat, Knud Villy Christensen, Rime Bahij El-Houri, Xavier Fretté, Lars Porskjær Christensen
Phycocyanins from cyanobacteria are possible sources for new natural blue colourants. Their chromophore, phycocyanobilin (PCB), was cleaved from the apoprotein by solvolysis in alcohols and alcoholic aqueous solutions. In all cases two PCB isomers were obtained, while different solvent adducts were formed upon the use of different reagents. The reaction is believed to take place via two competing pathways, a concerted E2 elimination and a SN2 nucleophilic substitution. Three cleavage methods were compared in terms of yield and purity: conventional reflux, sealed vessel heated in an oil bath, and microwave assisted reaction...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28946248/combination-of-microwave-assisted-extraction-and-ultrasonic-assisted-dispersive-liquid-liquid-microextraction-for-separation-and-enrichment-of-pyrethroids-residues-in-litchi-fruit-prior-to-hplc-determination
#14
Ke Wang, Xiujuan Xie, Yi Zhang, Yuanxiang Huang, Shiyu Zhou, Wei Zhang, Yuyang Lin, Huajun Fan
A novel method for simultaneous determination of pyrethroids residues in Litchi fruit has been developed by HPLC-UV detection using microwave-assisted extraction (MAE) coupled with ultrasonic-assisted dispersive liquid-liquid microextraction (UADLLME). Extraction conditions of MAE and UADLLME were respectively investigated by single-factor experiments and response surface methodology. Optimized experimental conditions included 310μL of chlorobenzene as extraction solvent, 1.3mL of ethanol as dispersive solvent and 3min of extraction time for UADLLME...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28946240/inorganic-arsenic-contents-in-ready-to-eat-rice-products-and-various-korean-rice-determined-by-a-highly-sensitive-gas-chromatography-tandem-mass-spectrometry
#15
Mun Yhung Jung, Ju Hee Kang, Hyun Jeong Jung, Sang Yong Ma
Rice and rice products have been reported to contain high contents of toxic inorganic arsenic (iAs). The inorganic arsenic contents in microwavable ready-to-eat rice products (n=30) and different types of Korean rice (n=102) were determined by a gas chromatography-tandem mass spectrometry (GC-MS/MS). The method showed low limit of detection (0.015pg), high intra- and inter-day repeatability (<7.3%, RSD), and recovery rates (90-117%). The mean iAs content in the ready-to-eat rice products was 59μgkg(-1) (dry weight basis)...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28934301/microwave-bio-sensor-based-on-symmetrical-split-ring-resonator-with-spurline-filters-for-therapeutic-goods-detection
#16
Rammah A Alahnomi, Z Zakaria, E Ruslan, S R Ab Rashid, Amyrul Azuan Mohd Bahar, Azizah Shaaban
A novel symmetrical split ring resonator (SSRR) based microwave sensor with spurline filters for detecting and characterizing the properties of solid materials has been developed. Due to the weak perturbation in the interaction of material under test (MUT) and planar microwave sensor, spurline filters were embedded to the SSRR microwave sensor which effectively enhanced Q-factor with suppressing the undesired harmonic frequency. The spurline filter structures force the presented sensor to resonate at a fundamental frequency of 2...
2017: PloS One
https://www.readbyqxmd.com/read/28885683/microwave-heating-modelling-of-a-green-smoothie-effects-on-glucoraphanin-sulforaphane-and-s-methyl-cysteine-sulphoxide-changes-during-storage
#17
Noelia Castillejo, Ginés Benito Martínez Hernández, Antonio José Lozano Guerrero, Juan Luis Pedreño Molina, Perla A Gómez, Encarna Aguayo, Francisco Artés, Francisco Artés Hernández
BACKGROUND: The heating of a green smoothie during an innovative semi-continuous microwave treatment (MW; 9 kW for 15 s) was modelled. Thermal and dielectric properties of the samples were previously determined. Furthermore, the heating effect on the main chemopreventive compounds of the smoothie and during its subsequent storage up to 30 days at 5 or 15 °C were studied. Such results were compared to conventional pasteurization (CP; 90 °C for 45 s) while unheated fresh blended samples were used as control (CTRL)...
September 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28872886/microwave-convective-drying-of-food-materials-a-critical-review
#18
C Kumar, M A Karim
Microwave convective drying (MCD) is gaining increasing interest due to its unique volumetric heating capability and ability to significantly reduce drying time and improve food quality. The main objective of this paper is to discuss, critically analyze and evaluate the recent advances in MCD and suggest the future directions in this field. The main focus of this paper is the mathematical modeling and experimental investigations in microwave convective drying of food materials. Recent developments in mathematical modeling of MCD is discussed and existing experimental setup and their advantages and disadvantages are discussed and analysed...
September 5, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28869652/comparison-of-laboratory-developed-and-commercial-monoclonal-antibody-based-sandwich-enzyme-linked-immunosorbent-assays-for-almond-prunus-dulcis-detection-and-quantification
#19
Changqi Liu, Guneet S Chhabra, Jing Zhao, Valerie D Zaffran, Sahil Gupta, Kenneth H Roux, Thomas M Gradziel, Shridhar K Sathe
A commercially available monoclonal antibody (mAb)-based direct sandwich enzyme-linked immunosorbent assay (ELISA) kit (BioFront Technologies, Tallahassee, Fla., U.S.A.) was compared with an in-house developed mAb 4C10-based ELISA for almond detection. The assays were comparable in sensitivity (limit of detection < 1 ppm full fat almond, limit of quantification < 5 ppm full fat almond), specificity (no cross-reactivity with 156 tested foods at a concentration of 100000 ppm whole sample), and reproducibility (intra- and interassay variability < 15% CV)...
October 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28865611/polysaccharides-from-macroalgae-recent-advances-innovative-technologies-and-challenges-in-extraction-and-purification
#20
M Garcia-Vaquero, G Rajauria, J V O'Doherty, T Sweeney
Polysaccharides obtained from macroalgae have promising prospects and could contribute greatly to the future of a marine based bio-economy. Specifically, laminarin and fucoidan from brown macroalgae have a wide variety of potential industrial applications including functional foods and nutraceuticals, due to their broad range of biological activities. These beneficial biological activities are related to the chemical composition and structure of the macroalgal polysaccharides. The molecular weight, monosaccharide composition and sulphate content of these polysaccharides could be influenced by both macroalgal biology (i...
September 2017: Food Research International
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