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https://www.readbyqxmd.com/read/28221984/postharvest-reduction-of-coliphage-ms2-from-romaine-lettuce-during-simulated-commercial-processing-with-and-without-a-chlorine-based-sanitizer
#1
Samantha L Wengert, Tiong Gim Aw, Elliot T Ryser, Joan B Rose
Viral foodborne outbreaks are a serious threat to public health, and fresh produce is becoming increasingly recognized as a transmission vehicle. To limit foodborne disease, ready-to-eat leafy greens are typically washed with a chlorine-based sanitizer during commercial production. This study assessed the efficacy of a chlorine-based sanitizer against coliphage MS2, as a potential surrogate for foodborne viruses, on fresh-cut romaine lettuce during simulated commercial production using a small-scale processing line...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221981/dry-transfer-inoculation-of-low-moisture-spices-containing-antimicrobial-compounds
#2
Ian M Hildebrandt, Chuxuan Hu, Elizabeth M Grasso-Kelley, Peiran Ye, Nathan M Anderson, Susanne E Keller
Inoculation of a food product for use in subsequent validation studies typically makes use of a high concentration cocktail of microorganisms suspended in aqueous media. However, this inoculation method may prove difficult particularly when the food product is a low-moisture food containing antimicrobial compounds, such as some dried spices. In this study, a dry transfer method for inoculation of clove powder, oregano leaves, ginger powder, and ground black pepper with a five-serovar cocktail of Salmonella was developed and compared with a traditional aqueous inoculation procedure...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221960/mycotoxin-contamination-in-stored-maize-and-groundnuts-based-on-storage-practices-and-conditions-in-subhumid-tropical-africa-the-case-of-kilosa-district-tanzania
#3
K S Magembe, M W Mwatawala, D P Mamiro
Experiments were conducted to assess the influence of storage practices on mycotoxin incidences in stored maize and groundnuts in Kilosa District, Eastern Central Tanzania. Factorial experiments were used to test the effects of processing, storage conditions, and protectants at 3-month intervals for 12 weeks. Temperature and relative humidity data were recorded by using data loggers. The differences among the treatment means were compared using Tukey's honestly significant difference test at 5% probability level...
December 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221926/evaluation-of-selected-nutrients-and-contaminants-in-distillers-grains-from-ethanol-production-in-texas
#4
Kyung-Min Lee, Timothy J Herrman, Lynn Post
This article contains the results of the evaluation of distillers grain (DG) coproducts from different ethanol plants around the United States and supplemented in animal diets in Texas, based on samples analyzed from 2008 to 2014. The samples were assessed for concentration, occurrence, and prevalence of selected nutrients and contaminants. Protein and sulfur contents of DG were largely different between maize and sorghum coproducts, as well as wet distillers grain with solubles (WDGS) and dried distillers grain with solubles (DDGS), indicating a significant effect of grain feedstock and dry grind process stream on DG composition and quality...
September 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221888/histamine-formation-in-a-dry-salted-twaite-shad-alosa-fallax-lacustris-product
#5
Mauro Vasconi, Federica Bellagamba, Cristian Bernardi, Piera Anna Martino, Vittorio Maria Moretti
Landlocked shad is a freshwater clupeid fish ( Alosa fallax lacustris ) whose consumption is associated with the risk of scombrotoxin poisoning. Traditionally, fresh shad are subjected to an artisanal processing procedure, consisting of dry salting and maturation under pressure, to give a fish product named missoltino , which is stored in large metallic barrels and is sold to local consumers and restaurants. In recent years, the introduction of modern food packaging technologies has enabled this product to also be distributed in shops and supermarkets...
January 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221844/evaluation-of-commercial-milk-specific-lateral-flow-devices
#6
Rachel C Courtney, Steve L Taylor, Joe L Baumert
The requirement for validation of allergen cleaning processes is increasing. The use of lateral flow devices (LFDs) to identify allergens has rapidly expanded, but the best practices for use of these devices are still developing. The goal of this study was to compare commercially available milk-specific LFDs and a general protein identification method. Five milk proteins and seven milk-derived ingredients were tested at several concentrations with eight milk-specific LFDs and a general protein identification kit...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221783/cultivation-of-the-marine-macroalgae-chaetomorpha-linum-in-municipal-wastewater-for-nutrient-recovery-and-biomass-production
#7
Shijian Ge, Pascale Champagne
Compared to microalgae, macroalgae are larger in size, thereby imposing lower separation and drying costs. This study demonstrates the feasibility of cultivating macroalgae Chaetomorpha linum (C. linum) in different types of municipal wastewaters, their ability to remove nutrient and their biomass composition for downstream biofuel production. Screening experiments indicated that C. linum grew well on primary (PW) and secondary wastewaters (SW), as well as centrate wastewater (CW) diluted to less than 20%. In a subsequent experiment, a step feeding approach was found to significantly increase biomass productivity to 10...
February 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28221760/hydrogel-nanocomposites-with-independently-tunable-rheology-and-mechanics
#8
Shimon Unterman, Lyndon F Charles, Sara E Strecker, Denis Kramarenko, Dmitry Pivovarchik, Elazer Reuven Edelman, Natalie Artzi
Hydrogels are an attractive class of biomaterials for minimally invasive local drug delivery given their injectability, tunability, high water content, and biocompatibility. Broad applicability though is challenged: relatively modest mechanical properties restricts use to soft tissues, while flow properties necessary for injectability limit implantation to dried, enclosed tissues to minimize material migration during gelation. To address these dual concerns we designed an injectable nanocomposite hydrogel based on dextran aldehyde and poly(amido amine) dendrimer doped with phyllosilicate nanoplatelet fillers...
February 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28221358/ionic-solutions-of-two-dimensional-materials
#9
Patrick L Cullen, Kathleen M Cox, Mohammed K Bin Subhan, Loren Picco, Oliver D Payton, David J Buckley, Thomas S Miller, Stephen A Hodge, Neal T Skipper, Vasiliki Tileli, Christopher A Howard
Strategies for forming liquid dispersions of nanomaterials typically focus on retarding reaggregation, for example via surface modification, as opposed to promoting the thermodynamically driven dissolution common for molecule-sized species. Here we demonstrate the true dissolution of a wide range of important 2D nanomaterials by forming layered material salts that spontaneously dissolve in polar solvents yielding ionic solutions. The benign dissolution advantageously maintains the morphology of the starting material, is stable against reaggregation and can achieve solutions containing exclusively individualized monolayers...
March 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28220711/comparison-of-hba1c-detection-in-whole-blood-and-dried-blood-spots-using-an-automated-ion-exchange-hplc-system
#10
Aleksandra Maleska, Christophe Hirtz, Elise Casteleyn, Orianne Villard, Jacques Ducos, Antoine Avignon, Ariane Sultan, Sylvain Lehmann
AIM: Hemoglobin A1c (HbA1c) is a widely recognized analyte for diagnosing and monitoring diabetes. Dried blood spot (DBS) constitutes a useful alternative to blood collection by venipuncture. Analytical and clinical validation of DBS use is, however, necessary before implementation. Results/methodology: HbA1c levels from whole blood or DBS from a cohort patients with diabetes were compared. DBS specimens were stable at ambient temperature. HbA1c detection on DBS was accurate, robust, and the correlation and agreement with whole blood values was excellent...
March 2017: Bioanalysis
https://www.readbyqxmd.com/read/28219296/phytochemical-screening-and-evaluation-of-in-vitro-antioxidant-and-antimicrobial-activities-of-the-indigenous-medicinal-plant-albizia-odoratissima
#11
Venkanna Banothu, Chandrasekharnath Neelagiri, Uma Adepally, Jayalakshmi Lingam, Kesavaharshini Bommareddy
CONTEXT: Albizia odoratissima (L. f.) Benth has been used in Indian folk medicine to treat numerous inflammatory pathologies, such as leprosy, ulcers, burns and asthma. OBJECTIVE: To evaluate the antioxidant and antimicrobial properties of A. odoratissima. MATERIALS AND METHODS: Dried leaves of A. odoratissima were extracted in organic solvents (hexane, chloroform, ethyl acetate, and methanol). The total phenolic content (TPC) and total flavonoid content (TFC) were determined using the Folin-Ciocalteu and aluminum chloride colorimetric methods, respectively...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28219143/-influence-of-collagen-fibroin-scaffolds-containing-silver-nanoparticles-on-dermal-regeneration-of-full-thickness-skin-defect-wound-in-rat
#12
Z G You, L P Zhang, X G Wang, H L Zhou, S X Guo, P Wu, C M Han
Objective: To explore the influence of collagen/fibroin scaffolds containing silver nanoparticles on dermal regeneration of full-thickness skin defect wound in rat. Methods: Eighty-one collagen/fibroin scaffolds containing silver nanoparticles (with the mass concentration of silver nanoparticles as 10 mg/L) and 81 collagen/fibroin scaffolds without silver nanoparticles were produced respectively with freeze-drying method and enrolled as silver nanoparticles scaffold group (SNS) and control scaffold group (CS)...
February 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28219033/using-a-facile-experimental-manipulation-to-fabricate-and-tune-a-polyoxometalate-cholesterol-hybrid-material
#13
Hai-Kuan Yang, Ling-Ling Liu, Xin Yuan, Shi-Mei Wu
In this work, we describe how the toluene and DMF addition order influences the gelation behaviors and supramolecular structures of a self-assembled polyoxometalate-cholesterol hybrid. Morphological studies of the dried xerogel samples were performed with transmission electron microscopy and atomic force microscopy, revealing that the order of solvent addition directed the self-assembly of polyoxometalate-cholesterol hybrids toward the formation of organogels with different supramolecular structures. In the case of organogel 1, which was formed by adding DMF dropwise into a hybrid-containing toluene solution, the characteristic organogel morphology contained a three-dimensional fibrous network structure...
February 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28218965/physicochemical-characterization-of-a-heat-treated-calcium-alginate-dry-film-prepared-with-chicken-stock
#14
Germán D Báez, Gisela N Piccirilli, Griselda A Ballerini, Agustín Frattini, Pablo A Busti, Roxana A Verdini, Néstor J Delorenzi
Solid sodium alginate was dissolved into chicken stock in order to give a final alginate concentration of 0.9 percent (w/v). Calcium ions present in chicken stock were enough to induce ionic gelation. After drying, Fourier transform infrared spectroscopy, thickness and mechanical properties of films obtained were determined. Calcium alginate-chicken stock films were heated at 130 °C for different times between 0 and 15 min. Mechanical and optical studies, differential scanning calorimetry, visual aspect and scanning electron microscopy were carried out to describe physicochemical properties of heat treated films...
February 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28218285/super-hydrophobic-silver-doped-tio2-polycarbonate-coatings-created-on-various-material-substrates-with-visible-light-photocatalysis-for-self-cleaning-contaminant-degradation
#15
Zhengjian Li, Zongzhao Sun, Zhiqiang Duan, Rui Li, Yanli Yang, Jingyi Wang, Xiaoxia Lv, Wei Qi, Hua Wang
In the present work, a facile and efficient fabrication method has been developed for creating super-hydrophobic coatings of silver-doped TiO2@polycarbonate (TiO2 (Ag)@PC) on the substrates of different materials with photocatalytic self-cleaning performances simply by the "dipping and drying" process. The substrates were first patterned with glue and then deposited with the dopamine-capped TiO2 (Ag)@PC (DA-TiO2 (Ag)@PC) nanocomposites, followed by the further etching with dimethylbenzene. The so prepared super-hydrophobic E-DA-TiO2(Ag)@PC coatings could present the lotus leaf-like porous architectures, high adhesion stability, and especially the visible-light photocatalysis for organic contaminant degradation, thus promising the wide outdoor and indoor applications like water proofing, metal erosion protection, and surface self-cleaning...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28217981/composition-antifungal-and-antiproliferative-activities-of-the-hydrodistilled-oils-from-leaves-and-flower-heads-of-pterocephalus-nestorianus-nab
#16
Fuad O Abdullah, Faiq H S Hussain, Barbara Mannucci, Rosamaria Lappano, Solveig Tosi, Marcello Maggiolini, Giovanni Vidari
This paper reports the first study of the chemical composition, and antifungal and antiproliferative properties of the volatile extracts obtained by hydrodistillation of the flower heads and leaves of the traditional Kurdish medicinal plant P. nestorianus Nab., collected in the wild. A total of fifty-five constituents, 43 of the flower heads' oil (PFO) and 46 of the leaves' oil (PLO), respectively, were identified by GC/MS, constituting 99.68% and 99.04% of the two oils, respectively. The oils were obtained in 0...
February 19, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28217140/evaluation-of-polymerase-chain-reaction-in-space-occupying-lesions-of-liver-reported-as-granulomatous-inflammation-tuberculosis-on-fine-needle-aspiration-cytology
#17
Kusum Sharma, Nalini Gupta, Kapil Goyal, Ajay Kumar Duseja, Aman Sharma, Arvind Rajwanshi
BACKGROUND: Tubercular involvement of the liver is uncommon, but is a serious consideration in differential diagnosis of granulomatous conditions, especially in endemic regions like India. OBJECTIVE: To assess the role of polymerase chain reaction (PCR) done on archival cytological material in diagnosing tuberculosis (TB) in cases reported as granulomatous inflammation/TB in liver lesions. MATERIALS AND METHODS: This was a retrospective study including a total of 17 cases of liver space-occupying lesions (SOLs) reported as granulomatous inflammation (n = 12) and TB (n = 5)...
2017: CytoJournal
https://www.readbyqxmd.com/read/28216887/anti-nociceptive-effect-of-7-methoxy-coumarin-from-eupatorium-triplinerve-vahl-asteraceae
#18
Binoy Varghese Cheriyan, Parimala Kadhirvelu, Jagan Nadipelly, Jaikumar Shanmugasundaram, Vijaykumar Sayeli, Viswanathan Subramanian
AIM: To evaluate the anti-nociceptive activity of 7-methoxy coumarin isolated from ethyl acetate fraction of the alcoholic extract of Eupatorium triplinerve Vahl. MATERIALS AND METHODS: The shade dried leaves of E. triplinerve were extracted with ethyl alcohol and the extract was condensed. This extract was fractionated with n-hexane, ethyl acetate, and n-butanol. The ethyl acetate fraction was subjected to column chromatography which yielded a crystalline compound-A, which was investigated for spectral characteristics...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216886/obtaining-a-dry-extract-from-the-mikania-laevigata-leaves-with-potential-for-antiulcer-activity
#19
Mariana Viana Pinto, Ezequiane Machado Oliveira, Jose Luiz Rodrigues Martins, Jose Realino de Paula, Elson Alves Costa, Edemilson Cardoso da Conceição, Maria Teresa Freitas Bara
BACKGROUND: Mikania laevigata leaves are commonly used in Brazil as a medicinal plant. OBJECTIVE: To obtain hydroalcoholic dried extract by nebulization and evaluate its antiulcerogenic potential. MATERIALS AND METHODS: Plant material and hydroalcoholic extract were processed and analyzed for their physicochemical characteristics. A method using HPLC was validated to quantify coumarin and o-coumaric acid. Hydroalcoholic extract was spray dried and the powder obtained was characterized in terms of its physicochemical parameters and potential for antiulcerogenic activity...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216881/specific-pcr-identification-between-peucedanum-praeruptorum-and-angelica-decursiva-and-identification-between-them-and-adulterant-using-dna-barcode
#20
Bang-Xing Han, Yuan Yuan, Lu-Qi Huang, Qun Zhao, Ling-Ling Tan, Xiang-Wen Song, Xiao-Mei He, Tao Xu, Feng Liu, Jian Wang
BACKGROUND: The traditional Chinese medicine (TCM) Qianhu and Zihuaqianhu are the dried roots of Peucedanum praeruptorum and Angelica decursiva, respectively. Since the plant sources of Qianhu and Zihuaqianhu are more complex, the chemical compositions of P. praeruptorum and A. decursiva are significantly different, and many adulterants exist because of the differences in traditional understanding and medication habits. Therefore, the rapid and accurate identification methods are required...
January 2017: Pharmacognosy Magazine
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