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https://www.readbyqxmd.com/read/28433057/low-cost-humic-acid-bonded-silica-as-an-effective-solid-phase-extraction-sorbent-for-convenient-determination-of-aflatoxins-in-edible-oils
#1
Neng-Zhi Zhou, Ping Liu, Xiao-Chuan Su, Yan-Hua Liao, Ning-Sheng Lei, Yong-Hong Liang, Shao-Huan Zhou, Wen-Si Lin, Jie Chen, Yu-Qi Feng, Yang Tang
Aflatoxins (AFs) are highly toxic, mutagenic, carcinogenic, and teratogenic secondary metabolites produced by the toxigenic fungi Aspergillus flavus and Aspergillus parasiticus. AFs tend to contaminate a wide range of foods which is a serious and recurring food safety problem worldwide. Currently, immunoaffinity chromatography (IAC) has become the most conventional sample clean-up method for determining AFs in foodstuffs. However, IAC method is limited in the large-scale food analysis because it requires the use of expensive disposable cartridges and the IA procedure is time-consuming...
June 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28419131/aflatoxin-levels-in-sunflower-seeds-and-cakes-collected-from-micro-and-small-scale-sunflower-oil-processors-in-tanzania
#2
Juma A Mmongoyo, Felicia Wu, John E Linz, Muraleedharan G Nair, Jovin K Mugula, Robert J Tempelman, Gale M Strasburg
Aflatoxin, a mycotoxin found commonly in maize and peanuts worldwide, is associated with liver cancer, acute toxicosis, and growth impairment in humans and animals. In Tanzania, sunflower seeds are a source of snacks, cooking oil, and animal feed. These seeds are a potential source of aflatoxin contamination. However, reports on aflatoxin contamination in sunflower seeds and cakes are scarce. The objective of the current study was to determine total aflatoxin concentrations in sunflower seeds and cakes from small-scale oil processors across Tanzania...
2017: PloS One
https://www.readbyqxmd.com/read/28407930/large-scale-multi-class-herbicides-analysis-in-oilseeds-by-rapid-one-step-quechers-based-extraction-and-cleanup-method-using-liquid-chromatography-tandem-mass-spectrometry
#3
Piotr Kaczyński
A simple, sensitive and rapid method is proposed for simultaneous determination of 120 various classes of herbicides in oilseed samples. A one-step QuEChERS-based approach to extraction and cleanup has been developed. LC-MS/MS was used to evaluate the proposed sample treatment methodologies. The new one-step QuEChERS strategy was compared to other methodologies previously used for elimination of co-extracts from fatty matrices. For validation purposes, recovery studies were carried out at 5, 50 and 500µgkg(-1) levels for rapeseed, sunflower seeds and soybean...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28386909/remote-measurement-of-sunflower-seed-moisture-content-by-the-use-of-microwaves
#4
Vitali L Litvischenko, Igor Ya Nikiforov, Igor V Ershov
BACKGROUND: The modern agriculture demands new methods and equipment that allow operators to conduct the instant control of moisture content over a wide area of agricultural fields with the purpose of providing the farmers with the optimal moment of harvesting mature seeds and crops. The authors proposed a new method and experimentally investigated the possibility to accomplish remote sensing of moisture content of sunflower seeds by using a microwave radiation of a millimeter range. RESULTS: An experimental device for measuring the coefficient of reflection of electromagnetic waves from sunflower inflorescence in a frequency range of 25...
April 7, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28364646/the-influences-of-cr-tolerant-rhizobacteria-in-phytoremediation-and-attenuation-of-cr-vi-stress-in-agronomic-sunflower-helianthus-annuus-l
#5
Ali Bahadur, Rizwan Ahmad, Aftab Afzal, Huyuan Feng, Vishandas Suthar, Asfa Batool, Aman Khan, Muhammad Mahmood-Ul-Hassan
Chromium contamination of agronomic soil has to turn into a serious global problem. This research was pointed to assess the effects of three Cr-tolerant rhizobacteria (SS1, SS3, and SS6) on sunflower growth and heavy metal uptake under Cr smog i.e. 20, 30 and 40 ppm using K2Cr2O7. Root promotion assay and pot experiment were conducted to investigate and evaluate the effects of Cr tolerance rhizobacteria and Cr accumulation capacity of sunflower. From root promotion assay non-significant variation was observed in the root length between SS1 and SS3 compared with un-inoculated whereas SS6 enhanced the root length in the absence and presence of chromium...
July 2017: Chemosphere
https://www.readbyqxmd.com/read/28357795/the-effectiveness-of-dietary-sunflower-meal-and-exogenous-enzyme-on-growth-digestive-enzymes-carcass-traits-and-blood-chemistry-of-broilers
#6
Mahmoud Alagawany, Adel I Attia, Zenat A Ibrahim, Reda A Mahmoud, Sabry A El-Sayed
High costs of conventional protein feed sources including soybean meal (SBM) generated the need for finding other alternatives. Thus, the present study was designed to evaluate the impact of graded replacements of SBM by sunflower seed meal (SFM) with or without enzyme supplementation on growth performance, digestive enzymes, carcass traits, and blood profile of broiler chickens. A total of 240 unsexed 1-week-old broiler chicks (Hubbard) were randomly divided into eight treatment groups of 30 chicks each in five replicates each of six chicks in a factorial design (4 × 2) arrangement, including four levels of SFM (0, 25, 50, and 75% replacing SBM) and two levels of enzyme (0- or 0...
March 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28357621/improved-campesterol-production-in-engineered-yarrowia-lipolytica-strains
#7
Yu Zhang, Ying Wang, Mingdong Yao, Hong Liu, Xiao Zhou, Wenhai Xiao, Yingjin Yuan
OBJECTIVES: To engineer Yarrowia lipolytica for improving the heterologous production of campesterol (a key precursor to manufacture pharmaceutical steroids). RESULTS: By screening 7-dehydrocholesterol reductase (DHCR7) from diverse species, DHCR7 from Danio rerio was the best candidate for campesterol synthesis. Overexpression of ACL (ATP: citrate lyase) or POX2 (peroxisome acyl-CoA oxidase 2) were key to improving campesterol production. The highest yield of campesterol was 942 mg/l was with the strain overexpressing POX2 in a 5 l bioreactor via high cell density fermentation process with a restricted supply of carbon sourc, sunflower seed oil...
March 29, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28356106/protective-effects-of-various-ratios-of-dha-epa-supplementation-on-high-fat-diet-induced-liver-damage-in-mice
#8
Tingting Shang, Liang Liu, Jia Zhou, Mingzhen Zhang, Qinling Hu, Min Fang, Yongning Wu, Ping Yao, Zhiyong Gong
BACKGROUND: A sedentary lifestyle and poor diet are risk factors for the progression of non-alcoholic fatty liver disease. However, the pathogenesis of hepatic lipid accumulation is not completely understood. Therefore, the present study explored the effects of dietary supplementation of various ratios of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) on a high-fat diet-induced lipid metabolism disorder and the concurrent liver damage. METHODS: Using high-fat diet-fed C57BL/6 J mice as the animal model, diets of various ratios of DHA/EPA (2:1, 1:1, and 1:2) with an n-6/n-3 ratio of 4:1 were prepared using fish and algae oils enriched in DHA and/or EPA and sunflower seed oils to a small extent instead of the high-fat diet...
March 29, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28349541/effect-of-the-type-and-level-of-hydration-of-alcoholic-solvents-on-the-simultaneous-extraction-of-oil-and-chlorogenic-acids-from-sunflower-seed-press-cake
#9
Nayara K Scharlack, Keila K Aracava, Christianne E C Rodrigues
BACKGROUND: This study aimed to evaluate the replacement of hexane by alcoholic solvents in oil extraction from sunflower seed press cake. The use of ethanol and isopropanol has important advantages, including low toxicity and good operational safety. Thus, in this study, solid-liquid extractions were performed in a single stage from 60 to 90 °C and in consecutive extractions in three stages at 90 °C. RESULTS: Solvent hydration negatively affected the extraction of oil but favored the extraction of chlorogenic acids (CAs), especially when ethanol was used...
March 27, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28340727/a-quantitative-approach-for-cd-cu-fe-and-mn-through-laser-ablation-imaging-for-evaluating-the-translocation-and-accumulation-of-metals-in-sunflower-seeds
#10
Gustavo de S Pessôa, Cícero A Lopes Júnior, Katherine C Madrid, Marco A Z Arruda
The uptake and accumulation of Cd in sunflower seeds represents an important pathway for imputing potentially toxic metals into human and animal food. In this way, bioimaging of Cd and micronutrients (Cu, Fe and Mn) in the seeds of sunflower grown in soil contaminated with Cd are performed. For this task, laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is used in quantitative approach, considering four groups: precursor, control, Cd-low (50mg) and Cd-high (700mg). For attaining our proposals, ICP-MS (nebulizer and auxiliary flow rates and radiofrequency power) and LA (laser intensity, frequency and spot size) parameters were optimized, and the analytical signal improved to 197%, 217%, 232%, and 283%, for (57)Fe, (112)Cd, (55)Mn and (63)Cu, respectively...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28333296/stepwise-evolution-of-a-buried-inhibitor-peptide-over-45-million-years
#11
Achala S Jayasena, Mark F Fisher, Jose L Panero, David Secco, Kalia Bernath-Levin, Oliver Berkowitz, Nicolas L Taylor, Edward E Schilling, James Whelan, Joshua S Mylne
The de novo evolution of genes and the novel proteins they encode has stimulated much interest in the contribution such innovations make to the diversity of life. Most research on this de novo evolution focuses on transcripts, so studies on the biochemical steps that can enable completely new proteins to evolve and the time required to do so have been lacking. Sunflower PawS1 is an unusual albumin precursor because in addition to producing albumin it also yields a potent, bicyclic protease-inhibitor called SFTI-1...
March 8, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28330233/improvement-of-shelf-life-of-soymilk-using-immobilized-protease-of-oerskovia-xanthineolytica-ncim-2839
#12
A K Sahoo, V S Gaikwad, R C Ranveer, P B Dandge, S R Waghmare
Protease enzyme has lot of commercial applications, so the cost-effective production of protease using sunflower oil seed waste was carried out from Oerskovia xanthineolyitca NCIM 2839. The maximum protease production was after 24 h of incubation with 2.5 % oil seed waste concentration. O. xanthineolytica was found to produce two proteases-P1 and P2. The proteases were purified using 60 % cold acetone precipitation and DEAE-cellulose ion exchange chromatography. SDS-PAGE revealed molecular weight of P1 and P2 was 36 and 24 kDa, respectively...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322087/physiological-role-of-exogenous-nitric-oxide-in-improving-performance-yield-and-some-biochemical-aspects-of-sunflower-plant-under-zinc-stress
#13
Samia Ageeb Akladious, Heba Ibrahim Mohamed
The present study was undertaken to examine the possible roles of sodium nitroprusside in protection against oxidative damage due to zinc toxicity in sunflower plants. Physiochemical parameters in sunflower plants exposed to Zn(2+) (100, 200 and 300 mg/kg soil) alone or combined with SNP were measured. The results showed that excess of Zn decreased plant growth, seed yield components and photosynthetic pigments content. On the other hand, Zn stress increased the level of non-enzymatic antioxidants (ascorbic acid and reduced glutathione) and enzymatic antioxidants (superoxide dismutase, ascrobate peroxidase and glutathione reductase), coupled with the appearance of novel protein bands...
March 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28255669/molecular-diversity-of-sunflower-populations-maintained-as-genetic-resources-is-affected-by-multiplication-processes-and-breeding-for-major-traits
#14
Brigitte Mangin, Nicolas Pouilly, Marie-Claude Boniface, Nicolas B Langlade, Patrick Vincourt, Felicity Vear, Stéphane Muños
SNP genotyping of 114 cultivated sunflower populations showed that the multiplication process and the main traits selected during breeding of sunflower cultivars drove molecular diversity of the populations. The molecular diversity in a set of 114 cultivated sunflower populations was studied by single-nucleotide polymorphism genotyping. These populations were chosen as representative of the 400 entries in the INRA collection received or developed between 1962 and 2011 and made up of land races, open-pollinated varieties, and breeding pools...
March 2, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28199921/pilot-scale-bioconversion-of-rice-and-sunflower-agro-residues-into-medicinal-mushrooms-and-laccase-enzymes-through-solid-state-fermentation-with-ganoderma-lucidum
#15
P D Postemsky, M A Bidegain, R González-Matute, N D Figlas, M A Cubitto
Solid-state fermentation was evaluated at the pilot-scale for the bioconversion and valorization of rice husks and straw (RSH), or sunflower seed hulls (SSH), into medicinal mushrooms and crude extracts, with laccase activity. The average mushroom yield was 56kg dry weight per ton of agro-residues. Laccase activity in crude aqueous extracts showed its maximum value of 10,927Ukg(-1) in RSH (day 10, Exudate phase) and 16,442Ukg(-1) in SSH (day 5, Full colonization phase), the activity at the Residual substrate phase being 511Ukg(-1) in RSH and 803Ukg(-1) in SSH, respectively...
May 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28190845/investigation-of-1-dodecylimidazolium-modified-filter-papers-as-a-thin-film-microextraction-phase-for-the-preconcentration-of-bisphenol-a-from-plant-oil-samples
#16
Cunling Ye, Chang Liu, Shen Wang, Zhike Wang
Based on the tunability of ionic liquids (ILs) according to the specific requirement of an application, 1-dodecylimidazolium chloride with amphiphilic structures was chemically fabricated on the surface of filter papers (DIL-FPs) for the first time. After synthesis, DIL-FPs was characterized by scanning electronic microscopy, energy dispersive X-ray spectroscopy and Fourier-transform infrared spectroscopy. DIL-FPs was used as a novel thin-film microextraction (TFME) phase for the preconcentration of amphiphilic bisphenol A from plant oil samples...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/28117455/characterization-of-novel-acidobacteria-exopolysaccharides-with-potential-industrial-and-ecological-applications
#17
Anna M Kielak, Tereza C L Castellane, Joao C Campanharo, Luiz A Colnago, Ohana Y A Costa, Maria L Corradi da Silva, Johannes A van Veen, Eliana G M Lemos, Eiko E Kuramae
Acidobacteria have been described as one of the most abundant and ubiquitous bacterial phyla in soil. However, factors contributing to this ecological success are not well elucidated mainly due to difficulties in bacterial isolation. Acidobacteria may be able to survive for long periods in soil due to protection provided by secreted extracellular polymeric substances that include exopolysaccharides (EPSs). Here we present the first study to characterize EPSs derived from two strains of Acidobacteria from subdivision 1 belonging to Granulicella sp...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093767/progress-in-modification-of-sunflower-oil-to-expand-its-industrial-value
#18
REVIEW
Saeed Rauf, Nazia Jamil, Sultan Ali Tariq, Maria Khan, Maria Kausar, Yalcin Kaya
Increasing the sunflower seed oil content as well as improving its quality makes it compatible for industrial demands. This is an important breeding objective of sunflower which increases its market value and ensures high returns for the producers. The present review focuses on determining the progress of improving sunflower seed oil content and modifying its quality by empirical and advanced molecular breeding methods. It is known that the sunflower oil content and quality have been altered through empirical selection methods and mutation breeding programmes in various parts of the world...
May 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28092821/efficacy-of-vacuum-steam-pasteurization-for-inactivation-of-salmonella-pt-30-escherichia-coli-o157-h7-and-enterococcus-faecium-on-low-moisture-foods
#19
Manoj K Shah, Gladys Asa, Julie Sherwood, Kari Graber, Teresa M Bergholz
Low moisture foods such as nuts, spices, and seeds have been implicated in several outbreaks due to Salmonella or E. coli O157:H7 contamination. Such foods may be consumed raw, and can be used as ingredients in other food products. While numerous thermal inactivation studies have been conducted for Salmonella on nuts, studies on other seeds and grains are minimal. Product water activity can influence the thermal resistance of pathogens, where thermal resistance increases as water activity decreases, leading to a requirement for higher temperatures and longer exposure times to achieve significant reduction of pathogen numbers...
March 6, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28074767/-diet-consisting-mainly-of-sunflower-seeds-and-chicken-as-the-cause-of-small-bowel-obstruction-in-a-bodybuilder
#20
Tine Thorup, Rasmus Fabricius
Diet-induced small bowel obstruction is a rare condition in young, healthy patients. We describe a case of a 26-year-old man, who presented with acute small bowel obstruction. During a period of eight days prior to admission the patient had been eating an extremely restricted diet along with a regulated intake of fluids. The diet was part of a preparation for a major fitness contest. We chose a conservative treatment of IV fluids and laxatives, and the patient recovered uneventfully.
January 9, 2017: Ugeskrift for Laeger
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