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https://www.readbyqxmd.com/read/28437164/factors-affecting-the-levels-of-heavy-metals-in-juices-processed-with-filter-aids
#1
Zhengfang Wang, Lauren S Jackson, Joseph E Jablonski
This study investigated factors that may contribute to the presence of arsenic and other heavy metals in apple and grape juices processed with filter aids. Different types and grades of filter aids were analyzed for arsenic, lead, and cadmium with inductively coupled plasma-tandem mass spectrometry. Potential factors affecting the transfer of heavy metals to juices during filtration treatments were evaluated. Effects of washing treatments on removal of heavy metals from filter aids were also determined. Results showed that diatomaceous earth (DE) generally contained a higher level of arsenic than perlite, whereas perlite had a higher lead content than DE...
April 24, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28435686/apple-dwarfing-rootstocks-exhibit-an-imbalance-in-carbohydrate-allocation-and-reduced-cell-growth-and-metabolism
#2
Toshi M Foster, Peter A McAtee, Chethi N Waite, Helen L Boldingh, Tony K McGhie
Apple dwarfing rootstocks cause earlier shoot termination and reduced root and shoot mass. To identify physiological factors responsible for rootstock-induced growth restriction, we compared vascular-enriched gene expression between two dwarfing rootstocks ('M27' and 'M9') and the vigorous rootstock 'M793' using RNA sequencing and quantitative reverse transcriptase PCR. Differentially expressed genes common to both dwarfing rootstocks belonged to five main biological processes: (1) primary metabolism, (2) cell wall synthesis and modification, (3) secondary metabolism, (4) hormone signalling and response and (5) redox homeostasis...
2017: Horticulture Research
https://www.readbyqxmd.com/read/28435205/the-disc-separation-and-the-eigenvalue-distribution-of-the-schur-complement-of-nonstrictly-diagonally-dominant-matrices
#3
Cheng-Yi Zhang, Weiwei Wang, Shuanghua Luo, Jianxing Zhao
The result on the Geršgorin disc separation from the origin for strictly diagonally dominant matrices and their Schur complements in (Liu and Zhang in SIAM J. Matrix Anal. Appl. 27(3):665-674, 2005) is extended to nonstrictly diagonally dominant matrices and their Schur complements, showing that under some conditions the separation of the Schur complement of a nonstrictly diagonally dominant matrix is greater than that of the original grand matrix. As an application, the eigenvalue distribution of the Schur complement is discussed for nonstrictly diagonally dominant matrices to derive some significant conclusions...
2017: Journal of Inequalities and Applications
https://www.readbyqxmd.com/read/28434710/shifting-the-paradigm-in-gas-chromatography-mass-spectrometry-pesticide-analysis-using-high-resolution-accurate-mass-spectrometry
#4
S Uclés, A Uclés, A Lozano, M J Martínez Bueno, A R Fernández-Alba
In the last 10 years, the majority of the pesticide food control laboratories moved from GC-MS to GC-MS/MS as the preferred analytical technique to address GC amenable compounds. The main reason for this change was the negative impact on the single stage GC-MS analysis caused by the interference from coeluting matrix compounds. The new development of gas chromatography coupled to high resolution accurate mass spectrometry (GC-HRAMS) provides opportunities to overcome such matrix interferences as a result of its much higher selectivity; allowing laboratories to carry out full-scan analysis covering the most exigent analytical performance criteria...
April 14, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28433923/uhplc-q-orbitrap-hrms-based-global-metabolomics-reveal-metabolome-modifications-in-plasma-of-young-women-after-cranberry-juice-consumption
#5
Haiyan Liu, Timothy J Garrett, Zhihua Su, Christina Khoo, Liwei Gu
Plasma metabolome in young women following cranberry juice consumption were investigated using a global UHPLC-Q-Orbitrap-HRMS approach. Seventeen female college students, between 21 and 29 years old, were given either cranberry juice or apple juice for three days using a cross-over design. Plasma samples were collected before and after juice consumption. Plasma metabolomes were analyzed using UHPLC-Q-Orbitrap-HRMS followed by orthogonal partial least squares-discriminant analyses (OPLS-DA). S-plot was used to identify discriminant metabolites...
April 7, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28432818/characterization-of-decellularized-ovine-small-intestine-submucosal-layer-as-extracellular-matrix-based-scaffold-for-tissue-engineering
#6
Morteza Rashtbar, Jamshid Hadjati, Jafar Ai, Issa Jahanzad, Mahmoud Azami, Sadegh Shirian, Somayeh Ebrahimi-Barough, Esmaeil Sadroddiny
Extracellular matrix-based scaffolds derived from mammalian tissues have been used in tissue engineering applications. Among all the tissues, decellularized small intestine submucosal layer (SIS) has been recently investigated for its exceptional characteristics and biocompatibilities. These investigations have been mainly focused on the decellularized porcine SIS; however, there has not been any report on ovine SIS (OSIS) layer. In this study, OSIS was decellularized and its physical, chemical, and morphological properties were evaluated...
April 22, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28431510/delayed-response-to-cold-stress-is-characterized-by-successive-metabolic-shifts-culminating-in-apple-fruit-peel-necrosis
#7
Nigel E Gapper, Maarten L A T M Hertog, Jinwook Lee, David A Buchanan, Rachel S Leisso, Zhangjun Fei, Guiqin Qu, James J Giovannoni, Jason W Johnston, Robert J Schaffer, Bart M Nicolaï, James P Mattheis, Christopher B Watkins, David R Rudell
BACKGROUND: Superficial scald is a physiological disorder of apple fruit characterized by sunken, necrotic lesions appearing after prolonged cold storage, although initial injury occurs much earlier in the storage period. To determine the degree to which the transition to cell death is an active process and specific metabolism involved, untargeted metabolic and transcriptomic profiling was used to follow metabolism of peel tissue over 180 d of cold storage. RESULTS: The metabolome and transcriptome of peel destined to develop scald began to diverge from peel where scald was controlled using antioxidant (diphenylamine; DPA) or rendered insensitive to ethylene using 1-methylcyclopropene (1-MCP) beginning between 30 and 60 days of storage...
April 21, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28429917/the-impact-of-urbanization-on-the-community-food-environment-in-china
#8
Yang Wu, Hong Xue, Huijun Wang, Chang Su, Shufa Du, Youfa Wang
BACKGROUND AND OBJECTIVES: Research on how urbanization has influenced the food environment in China is limited. The study aimed to examine the impact of urbanization on the food environment in China. METHODS AND STUDY DESIGN: Longitudinal data collected during 1989-2009 from the China Health and Nutrition Survey were used, which covered 9 provinces in China. Urbanicity index (0-10) was assessed using an urbanicity scale. Final analyses included 216 communities...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28429609/chemical-evaluation-of-the-rhynchophorus-ferrugineus-larvae-fed-on-different-substrates-as-human-food-source
#9
Annarita Cito, Santi Longo, Giuseppe Mazza, Elena Dreassi, Valeria Francardi
We investigated the chemical composition of the weevil Rhynchophorus ferrugineus larvae, traditionally used as human food in Asia and known worldwide as one of the most significant pest for palm trees. Total fat content and fatty acid composition were analyzed using standard methodologies in (1) weevil larvae reared on apple fruit slices and wild specimens collected from attacked (2) Phoenix canariensis and (3) Syagrus romanzoffiana palm trees. Total fat content was extremely high in all the specimens (ranged between 57...
January 1, 2017: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
https://www.readbyqxmd.com/read/28429412/bone-extracellular-matrix-hydrogel-enhances-osteogenic-differentiation-of-c2c12-myoblasts-and-mouse-primary-calvarial-cells
#10
Noura Alom, Heather Peto, Glen R Kirkham, Kevin M Shakesheff, Lisa J White
Hydrogel scaffolds derived from the extracellular matrix (ECM) of mammalian tissues have been successfully used to promote tissue repair in vitro and in vivo. The objective of this study was to evaluate the osteogenic potential of ECM hydrogels prepared from demineralized and decellularized bovine bone in the presence and absence of osteogenic medium. Culture of C2C12 and mouse primary calvarial cells (mPCs) on decellularized bone ECM (bECM) and demineralized bone matrix (DBM) gels resulted in increased expression of osteogenic gene markers, including a 3...
April 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28427989/egocentric-and-allocentric-visuospatial-working-memory-in-premotor-huntington-s-disease-a-double-dissociation-with-caudate-and-hippocampal-volumes
#11
Katherine L Possin, Hosung Kim, Michael D Geschwind, Tacie Moskowitz, Erica T Johnson, Sharon J Sha, Alexandra Apple, Duan Xu, Bruce L Miller, Steven Finkbeiner, Christopher P Hess, Joel H Kramer
Our brains represent spatial information in egocentric (self-based) or allocentric (landmark-based) coordinates. Rodent studies have demonstrated a critical role for the caudate in egocentric navigation and the hippocampus in allocentric navigation. We administered tests of egocentric and allocentric working memory to individuals with premotor Huntington's disease (pmHD), which is associated with early caudate nucleus atrophy, and controls. Each test had 80 trials during which subjects were asked to remember 2 locations over 1-sec delays...
April 17, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28427270/skin-irritation-testing-of-antimicrobial-conjugated-electrolytes
#12
Kristin N Wilde, Phuong A H Nguyen, David G Whitten, Heather E Canavan
Each year, the United States spends about $20 billion to treat people who have been infected with antibiotic resistant bacteria. Even so, the development of new antibiotics has slowed considerably since the mid-20th century. As a result, researchers are looking into developing synthetic compounds and materials with antimicrobial activities such as those made by the Schanze and Whitten groups [ACS Appl. Mater. Interfaces 3, 2820 (2011)]. Previously, they have demonstrated that poly(phenylene ethynylene) (PPE) based electrolytes and oligomeric end-only phenylene ethynylene (EO-OPE) based electrolytes possess strong biocidal activity...
April 20, 2017: Biointerphases
https://www.readbyqxmd.com/read/28425668/pectin-hemicellulose-or-lignin-impact-of-the-biowaste-source-on-the-performance-of-hard-carbons-for-sodium-ion-batteries
#13
Xinwei Dou, Ivana Hasa, Maral Hekmatfar, Thomas Diemant, R Juergen Behm, Daniel Buchholz, Stefano Passerini
Hard carbons are currently the most widely used negative electrode materials in Na-ion batteries. This is due to their promising electrochemical performance with capacities of 200-300 mAh g-1 and stable long-term cycling. However, an abundant and cheap carbon source is necessary in order to comply with the low-cost philosophy of the Na-ion technology. As a matter of fact, many biologic or waste materials have been used to synthesize hard carbons but the impact of the precursors on the final properties of the anode material is not fully understood...
April 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28424966/transcriptomic-analysis-of-molecular-responses-in-malus-domestica-m26-roots-affected-by-apple-replant-disease
#14
Stefan Weiß, Melanie Bartsch, Traud Winkelmann
Gene expression studies in roots of apple replant disease affected plants suggested defense reactions towards biotic stress to occur which did not lead to adequate responses to the biotic stressors. Apple replant disease (ARD) leads to growth inhibition and fruit yield reduction in replanted populations and results in economic losses for tree nurseries and fruit producers. The etiology is not well understood on a molecular level and causal agents show a great diversity indicating that no definitive cause, which applies to the majority of cases, has been found out yet...
April 19, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28424730/melatonin-improves-waterlogging-tolerance-of-malus-baccata-linn-borkh-seedlings-by-maintaining-aerobic-respiration-photosynthesis-and-ros-migration
#15
Xiaodong Zheng, Jingzhe Zhou, Dun-Xian Tan, Na Wang, Lin Wang, Dongqian Shan, Jin Kong
Waterlogging, one of the notorious abiotic stressors, retards the growth of apple plants and reduces their production. Thus, it is an urgent agenda for scientists to identify the suitable remedies for this problem. In the current study, we found that melatonin significantly improved the tolerance of apple seedlings against waterlogging stress. This was indicated by the reduced chlorosis and wilting of the seedlings after melatonin applications either by leaf spray or root irrigation. The mechanisms involve in that melatonin functions to maintain aerobic respiration, preserves photosynthesis and reduces oxidative damage of the plants which are under waterlogging stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424721/mirna-and-degradome-sequencing-reveal-mirna-and-their-target-genes-that-may-mediate-shoot-growth-in-spur-type-mutant-yanfu-6
#16
Chunhui Song, Dong Zhang, Liwei Zheng, Jie Zhang, Baojuan Zhang, Wenwen Luo, Youmei Li, Guangfang Li, Juanjuan Ma, Mingyu Han
The spur-type growth habit in apple trees is characterized by short internodes, increased number of fruiting spurs, and compact growth that promotes flowering and facilitates management practices, such as pruning. The molecular mechanisms responsible for regulating spur-type growth have not been elucidated. In the present study, miRNAs and the expression of their potential target genes were evaluated in shoot tips of "Nagafu 2" (CF) and spur-type bud mutation "Yanfu 6" (YF). A total of 700 mature miRNAs were identified, including 202 known apple miRNAs and 498 potential novel miRNA candidates...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424713/comprehensive-genomic-identification-and-expression-analysis-of-the-phosphate-transporter-pht-gene-family-in-apple
#17
Tingting Sun, Mingjun Li, Yun Shao, Lingyan Yu, Fengwang Ma
Elemental phosphorus (Pi) is essential to plant growth and development. The family of phosphate transporters (PHTs) mediates the uptake and translocation of Pi inside the plants. Members include five sub-cellular phosphate transporters that play different roles in Pi uptake and transport. We searched the Genome Database for Rosaceae and identified five clusters of phosphate transporters in apple (Malus domestica), including 37 putative genes. The MdPHT1 family contains 14 genes while MdPHT2 has two, MdPHT3 has seven, MdPHT4 has 11, and MdPHT5 has three...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28424206/extending-the-fossil-record-of-polytrichaceae-early-cretaceous-meantoinea-alophosioides-gen-et-sp-nov-permineralized-gametophytes-with-gemma-cups-from-vancouver-island
#18
Alexander C Bippus, Ruth A Stockey, Gar W Rothwell, Alexandru M F Tomescu
PREMISE OF THE STUDY: Diverse in modern ecosystems, mosses are dramatically underrepresented in the fossil record. Furthermore, most pre-Cenozoic mosses are known only from compression fossils, lacking detailed anatomical information. When preserved, anatomy vastly improves resolution in the systematic placement of fossils. Lower Cretaceous deposits at Apple Bay (Vancouver Island, British Columbia, Canada) contain a diverse anatomically preserved flora that includes numerous bryophytes, many of which have yet to be characterized...
April 19, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28423915/isolation-of-flavonoids-from-apple-peel-using-novel-graphene-oxide-cotton-fiber
#19
Z Xu, R Peng, X Chen, R Ghosh, H P V Rupasinghe
A novel graphene oxide cotton fibre (GOF) was used to adsorb flavonoids from crude ethanol extracts derived from apple peels. Ultra-high pressure liquid chromatography-mass spectrometry was used to analyse polyphenol content, and the resulting data demonstrated that GOF-based flash chromatography can be used to efficiently separate polyphenols from sugars and can facilitate the removal of 95% of the sugar content. Flavonoids can be easily separated from phenolic acids. Chalcones and flavonols were eluted with 100% methanol and subsequently flavan-3-ols can be eluted with 0...
April 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28423209/r2r3-myb-transcription-factor-mdmyb73-is-involved-in-malate-accumulation-and-vacuolar-acidification-in-apple
#20
Da-Gang Hu, Yuan-Yuan Li, Quan-Yan Zhang, Ming Li, Cui-Hui Sun, Jian-Qiang Yu, Yu-Jin Hao
Malate, the predominant organic acid in many fruits, is a crucial component of fruit organoleptic quality, including taste and flavor. The genetic and environmental mechanisms affecting malate metabolism in fruit cells have been studied extensively. However, the transcriptional regulation of malate-metabolizing enzymes and vacuolar transporters remains poorly understood. Our previous studies demonstrated that MdMYB1 modulates anthocyanin accumulation and vacuolar acidification, by directly activating vacuolar transporters, including MdVHA-B1, MdVHA-E, MdVHP1, and MdtDT...
April 19, 2017: Plant Journal: for Cell and Molecular Biology
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