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https://www.readbyqxmd.com/read/28425932/validation-of-a-novel-technique-and-evaluation-of-the-surface-free-energy-of-food
#1
Tugce Senturk Parreidt, Markus Schmid, Carolin Hauser
Characterizing the physical properties of a surface is largely dependent on determining the contact angle exhibited by a liquid. Contact angles on the surfaces of rough and irregularly-shaped food samples are difficult to measure using a contact angle meter (goniometer). As a consequence, values for the surface energy and its components can be mismeasured. The aim of this work was to use a novel contact angle measurement method, namely the snake-based ImageJ program, to accurately measure the contact angles of rough and irregular shapes, such as food samples, and so enable more accurate calculation of the surface energy of food materials...
April 20, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28424530/molecular-diagnostic-assays-based-on-cpn60-ut-sequences-reveal-the-geographic-distribution-of-subgroup-16srxiii-a-i-i-phytoplasma-in-mexico
#2
Edel Pérez-López, Douglas Rodríguez-Martínez, Chrystel Y Olivier, Mauricio Luna-Rodríguez, Tim J Dumonceaux
Geographically diverse samples from strawberry exhibiting symptoms of Strawberry Green Petal (SbGP), periwinkle plants with virescence, and blackberry, blueberry, and raspberry plants displaying yellowing and inedible fruits, were assayed for the presence of phytoplasma DNA. PCR targeting the 16S rRNA-encoding gene and chaperonin-60 (cpn60) showed that the plants were infected with phytoplasma subgroup16SrXIII-(A/I)I (SbGP/MPV). To examine the geographic distribution of this pathogen in Mexico, we designed an array of cpn60-targeted molecular diagnostic assays for SbGP/MPV phytoplasma...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421050/reveromycins-a-and-b-from-streptomyces-sp-3-10-antifungal-activity-against-plant-pathogenic-fungi-in-vitro-and-in-a-strawberry-food-model-system
#3
Ang Lyu, Hao Liu, Hongjie Che, Long Yang, Jing Zhang, Mingde Wu, Weidong Chen, Guoqing Li
This study was conducted to determine the antifungal activity of the metabolites from Streptomyces sp. 3-10, and to purify and identify the metabolites. Meanwhile, the taxonomic status of strain 3-10 was re-evaluated. The cultural filtrates of strain 3-10 in potato dextrose broth were extracted with ethyl acetate. The resulting crude extract at 1 and 5 μg/ml inhibited growth of 22 species in 18 genera of plant pathogenic fungi and Oomycetes, accounting for 92% of the total 24 tested species, suggesting that it has a wide antifungal spectrum...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28419163/response-of-microbial-community-of-organic-matter-impoverished-arable-soil-to-long-term-application-of-soil-conditioner-derived-from-dynamic-rapid-fermentation-of-food-waste
#4
Jiaqi Hou, Mingxiao Li, Xuhui Mao, Yan Hao, Jie Ding, Dongming Liu, Beidou Xi, Hongliang Liu
Rapid fermentation of food waste can be used to prepare soil conditioner. This process consumes less time and is more cost-effective than traditional preparation technology. However, the succession of the soil microbial community structure after long-term application of rapid fermentation-derived soil conditioners remains unclear. Herein, dynamic rapid fermentation (DRF) of food waste was performed to develop a soil conditioner and the successions and diversity of bacterial communities in an organic-matter-impoverished arable soil after six years of application of DRF-derived soil conditioner were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28417292/probiotic-strawberry-yogurts-microbiological-chemical-and-sensory-properties
#5
Tamer Turgut, Songül Cakmakci
This study was performed to determine the viability of Lactobacillus acidophilus and Bifidobacterium bifidum in yogurt made with strawberry marmalade (SM) and to examine the quality properties of probiotic yogurt. Acidity, pH, bacterial counts and sensory analysis of the yogurt samples were investigated on days 1, 3, 5, 7, 10 and 14 during storage at 4 °C. The survival rate of L. acidophilus was greater than that of B. bifidum. The viability of L. acidophilus decreased during the storage period, but B. bifidum numbers remained stable during the storage period...
April 17, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28416885/effect-of-chitosan-treatment-on-strawberry-allergen-related-gene-expression-during-ripening-stages
#6
Milena Petriccione, Francesco Mastrobuoni, Luigi Zampella, Elvira Nobis, Giuseppe Capriolo, Marco Scortichini
The effectiveness of a chitosan coating treatment on the allergen-related genes expression of three strawberry cultivars (Fragaria × ananassa Duch., namely cvs. "Sabrina", "Candonga" and "Jonica") harvested at three ripening stages was evaluated. Fruits were treated with a 1% chitosan coating and stored at 20 °C for 48 h. Three genes, encoding Fra a1, Fra a3 and Fra a4 allergens, were evaluated by real-time qPCR. The transcript levels of several genes showed different patterns during ripening stages in strawberry cultivars but were up-regulated by chitosan treatment...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28414632/analysis-of-the-spatial-pattern-of-strawberry-angular-leaf-spot-in-california-nursery-production
#7
Christophe Gigot, William W Turechek, Neil McRoberts
In California, angular leaf spot (ALS) is a common disease in strawberry nursery production, and a major concern for nurseries wishing to export plants. As the spatial pattern of a disease can offer insight into pathogen source, mode of dissemination, and how current crop management practices affect epidemic development, an understanding of the spatial pattern of ALS would allow nursery growers to make informed decisions regarding disease management. Ninety seven field assessments of disease incidence were performed at different nursery locations in 2014 and 2015 to quantify ALS spatial pattern under commercial conditions...
April 17, 2017: Phytopathology
https://www.readbyqxmd.com/read/28411810/multivariate-curve-resolution-applied-to-kinetic-spectroscopic-data-matrices-dye-determination-in-foods-by-means-of-enzymatic-oxidation
#8
Valeria Boeris, Juan A Arancibia, Alejandro C Olivieri
In this work, the combination of chemometric techniques with kinetic-spectroscopic data allowed quantifying two dyes (tartrazine and carminic acid) in complex matrices as mustard, ketchup, asparagus soup powder, pumpkin soup powder, plum jam and orange-strawberry juice. Quantitative analysis was performed without the use of tedious sample pretreatment, due to the achievement of the second-order advantage. The results obtained showed an improvement in simplicity, speed and cost with respect to usual separation techniques, allowing to properly quantifying these dyes obtaining limits of detection below 0...
July 1, 2017: Talanta
https://www.readbyqxmd.com/read/28409937/spatial-and-temporal-localization-of-flavonoid-metabolites-in-strawberry-fruit-fragaria-%C3%A3-ananassa
#9
Anna Christina Crecelius, Dirk Hoelscher, Thomas Hoffmann, Bernd Schneider, Thilo C Fischer, Magda-Viola Hanke, Henry Flachowsky, Wilfried Schwab, Ulrich S Schubert
Flavonoids are important metabolites in strawberries (Fragaria × ananassa), since they accomplish an extensive collection of physiological functions and are valuable for human health. However, their localization within the fruit tissue has not been extensively explored. Matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI) was employed to shed light on the spatial distribution of flavonoids during fruit development. One wild-type (WT) and two transgenic lines were compared, where in the transgenics enzymes anthocyanidin reductase (ANRi) and flavonol synthase (FLSi), respectively were down-regulated using an RNAi based silencing approach...
April 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28407898/convective-drying-kinetics-of-strawberry-fragaria-ananassa-effects-on-antioxidant-activity-anthocyanins-and-total-phenolic-content
#10
Lilia Méndez-Lagunas, Juan Rodríguez-Ramírez, Marlene Cruz-Gracida, Sadoth Sandoval-Torres, Gerardo Barriada-Bernal
The thermal drying effects on strawberries were investigated in terms of the kinetics of antioxidant activity (AA), anthocyanins (A) and total phenolic compound content (TPC), as well as the final colour. The evaluated drying temperatures were 50 and 60°C with an air rate of 1.5m/s. The 2,2-diphenyl-2-picryl-hydrazyl, pH differential and Folin-Ciocalteu methods were used to assess the antioxidant properties. The kinetics of TPC and AA showed an initial and final period of degradation attributed to inhibition of enzymes...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28402916/potential-of-chopped-heath-biomass-and-spent-growth-media-to-replace-wood-chips-as-bulking-agent-for-composting-high-n-containing-residues
#11
J Viaene, B Reubens, K Willekens, C Van Waes, S De Neve, B Vandecasteele
We investigated the potential of C-rich byproducts to replace wood chips as bulking agent (BA) during composting. The impact of these alternatives on the composting process and on compost stability and characteristics was assessed. Three BA (chopped heath biomass and spent growth media used in strawberry and tomato cultivation) were used for processing leek residues in windrow composting. All BA resulted in stable composts with an organic matter (OM) content suitable for use as soil amendment. Using chopped heath biomass led to high pile temperatures and OM degradation and a nutrient-poor compost with high C/P ratio appropriate for increasing soil organic carbon content in P-rich soils...
April 9, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28401892/notch-and-hippo-signaling-converge-on-strawberry-notch-1-sbno1-to-synergistically-activate-cdx2-during-specification-of-the-trophectoderm
#12
Yusuke Watanabe, Kota Y Miyasaka, Atsushi Kubo, Yasuyuki S Kida, Osamu Nakagawa, Yoshikazu Hirate, Hiroshi Sasaki, Toshihiko Ogura
The first binary cell fate decision occurs at the morula stage and gives rise to two distinct types of cells that constitute the trophectoderm (TE) and inner cell mass (ICM). The cell fate determinant, Cdx2, is induced in TE cells and plays an essential role in their differentiation and maintenance. Notch and Hippo signaling cascades are assumed to converge onto regulatory elements of Cdx2, however, the underlying molecular mechanisms are largely unknown. Here, we show involvement of Strawberry Notch1 (Sbno1), a novel chromatin factor of the helicase superfamily 2, during preimplantation development...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28396048/effects-of-aroma-and-taste-independently-or-in-combination-on-appetite-sensation-and-subsequent-food-intake
#13
Wenting Yin, Louise Hewson, Robert Linforth, Moira Taylor, Ian D Fisk
Food flavour is important in appetite control. The effects of aroma and taste, independently or in combination, on appetite sensation and subsequent food intake, were studied. Twenty-six females (24 ± 4 years, 20.9 ± 1.9 kg⋅m(-2)) consumed, over 15 min period, one of four sample drinks as a preload, followed by an ad libitum consumption of a pasta meal (after 65 min). Sample drinks were: water (S1, 0 kcal), water with strawberry aroma (S2, 0 kcal), water with sucrose and citric acid (S3, 48 kcal) and water with strawberry aroma, sucrose and citric acid (S4, 48 kcal)...
April 7, 2017: Appetite
https://www.readbyqxmd.com/read/28390818/product-environmental-footprint-of-strawberries-case-studies-in-estonia-and-germany
#14
Eveli Soode-Schimonsky, Klaus Richter, Gabriele Weber-Blaschke
The environmental impacts of strawberries have been assessed in several studies. However, these studies either present dissimilar results or only focus on single impact categories without offering a comprehensive overview of environmental impacts. We applied the product environmental footprint (PEF) methodology to broadly indicate the environmental impacts of various strawberry production systems in Germany and Estonia by 15 impact categories. Data for the 7 case studies were gathered from two farms with organic and two farms with conventional open field production systems in Estonia and from one farm with conventional open field and one farm with a polytunnel and greenhouse production system in Germany...
April 5, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28381961/investigation-of-genetic-diversity-of-fusarium-oxysporum-f-sp-fragariae-using-pcr-rflp
#15
Ji-Su Kim, Nam Jun Kang, Youn-Sig Kwak, Choungkeun Lee
Fusarium wilts of strawberry, caused by Fusarium oxysporum f. sp. fragariae, is a serious soil-borne disease. Fusarium wilt causes dramatic yield losses in commercial strawberry production and it is a very stubborn disease to control. Reliable chemical control of strawberry Fusarium wilt disease is not yet available. Moreover, other well-known F. oxysporum have different genetic information from F. oxysporum f. sp. fragariae. This analysis investigates the genetic diversity of strawberry Fusairum wilt pathogen...
April 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28380280/alcohol-acyl-transferase-1-links-two-distinct-volatile-pathways-that-produce-esters-and-phenylpropenes-in-apple-fruit
#16
Yar-Khing Yauk, Edwige J F Souleyre, Adam J Matich, Xiuyin Chen, Mindy Y Wang, Blue Plunkett, Andrew P Dare, Richard V Espley, Sumathi Tomes, David Chagné, Ross G Atkinson
Fruit accumulate a diverse set of volatiles including esters and phenylpropenes. Volatile esters are synthesised via fatty acid degradation or from amino acid precursors with the final step being catalysed by alcohol acyl transferases (AATs). Phenylpropenes are produced as a side branch of the general phenylpropanoid pathway. Major QTLs on apple (Malus x domestica) LG2 for production of the phenylpropene estragole and volatile esters (including 2-methylbutyl acetate and hexyl acetate) both co-located with the MdAAT1 gene...
April 5, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28376412/effect-of-exogenously-applied-molybdenum-on-its-absorption-and-nitrate-metabolism-in-strawberry-seedlings
#17
Li Liu, Wei Xiao, Ling Li, Dong-Mei Li, Dong-Sheng Gao, Cui-Ying Zhu, Xi-Ling Fu
Molybdenum (Mo)-an essential element of plants-is involved in nitrogen (N) metabolism. Plants tend to accumulate more nitrate and show lower nitrogen use efficiency (NUE) under Mo-deficient conditions. Improving NUE in fruits reduces the negative effect of large applications of chemical fertilizer, but the mechanisms underlying how Mo enhances NUE remain unclear. We cultivated strawberry seedlings sprayed with 0, 67.5, 135, 168.75, or 202.5 g Mo·ha(-1) in a non-soil culture system. The Mo concentration in every plant tissue analyzed increased gradually as Mo application level rose...
March 23, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28365721/pcppi-a-comprehensive-database-for-the-prediction-of-penicillium-crop-protein-protein-interactions
#18
Junyang Yue, Danfeng Zhang, Rongjun Ban, Xiaojing Ma, Danyang Chen, Guangwei Li, Jia Liu, Michael Wisniewski, Samir Droby, Yongsheng Liu
Penicillium expansum , the causal agent of blue mold, is one of the most prevalent post-harvest pathogens, infecting a wide range of crops after harvest. In response, crops have evolved various defense systems to protect themselves against this and other pathogens. Penicillium -crop interaction is a multifaceted process and mediated by pathogen- and host-derived proteins. Identification and characterization of the inter-species protein-protein interactions (PPIs) are fundamental to elucidating the molecular mechanisms underlying infection processes between P...
January 1, 2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28353394/lc-ms-ms-determination-of-pesticide-residues-in-fruits-and-vegetables
#19
Anna Stachniuk, Agnieszka Szmagara, Renata Czeczko, Emilia Fornal
The aim of the research is to evaluate pesticide residue contamination of fresh and frozen fruits and vegetables, agricultural raw material, purchased from Polish farmers for production of frozen fruits and vegetables, and the estimation of the multiresidue method effectiveness expressed as the proportion of pesticides detected in food samples to the total number of pesticides analyzed by multiresidue methods. A total of 144 samples (of black currants, red currants, raspberries, cherries, strawberries, blackberries, cauliflowers and broccoli) were analyzed using LC-MS/MS method for the determination of 60 pesticides...
March 29, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28351770/2d-nmr-investigation-and-in%C3%A2-vitro-evaluation-of-antioxidant-antigenotoxic-and-estrogenic-antiestrogenic-activities-of-strawberry-grape
#20
Brigida D'Abrosca, Margherita Lavorgna, Monica Scognamiglio, Chiara Russo, Vittoria Graziani, Concetta Piscitelli, Antonio Fiorentino, Marina Isidori
Strawberry grape is considered beneficial due to its extensive phytochemical properties. To expand the knowledge about the chemical constituents and the biological activities of the whole plant, 2D-NMR investigation has been carried out on pulp, peel, seeds, stalks and leaves. Catechin and epicatechin were identified as the main constituents of the seed extract, quercetin and ferulic acid were detected in the leaves and malvidin and cyanidin glucopyranoside in the peels. The leaf, stalk and seed extracts were found to be very rich in phytochemicals and were tested for their ability to reduce the mutagenicity and genotoxicity of standard agents via Salmonella mutagenicity assay and SOS chromotest, respectively...
March 27, 2017: Food and Chemical Toxicology
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