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https://www.readbyqxmd.com/read/28820473/effect-of-pullulan-coating-on-postharvest-quality-and-shelf-life-of-highbush-blueberry-vaccinium-corymbosum-l
#1
Karolina Kraśniewska, Iwona Ścibisz, Małgorzata Gniewosz, Marta Mitek, Katarzyna Pobiega, Andrzej Cendrowski
Fruits form an important part of a healthy human diet as they contain many ingredients with proven pro-health effects such as vitamins, phenolic compounds, organic acids, fiber, and minerals. The purpose of this work was to evaluate the effect of pullulan coating on the quality and shelf life of highbush blueberry during storage. General appearance, weight loss, dry matter, soluble solid content, reducing sugars, content of L-ascorbic acid, phenolic compounds (total phenolics, phenolics acids and anthocyanins) were determined in uncoated and coated blueberries fruits...
August 18, 2017: Materials
https://www.readbyqxmd.com/read/28815867/baseline-susceptibility-of-spotted-wing-drosophila-drosophila-suzukii-to-four-key-insecticide-classes
#2
Steven Van Timmeren, David Mota-Sanchez, John C Wise, Rufus Isaacs
BACKGROUND: The invasive drosophilid pest, Drosophila suzukii Matsumura, is affecting berry production in most fruit-producing regions of the world. Chemical control is the dominant management approach, creating concern for insecticide resistance in this pest. We compared the insecticide susceptibility of D. suzukii populations collected from conventional, organic, or insecticide-free blueberry sites. RESULTS: The sensitivity of D. suzukii to malathion and spinetoram declined slightly across the three years of monitoring, whereas it was more consistent for methomyl and zeta-cypermethrin...
August 16, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28814623/a-3-week-old-with-an-isolated-blueberry-muffin-rash
#3
John B Darby, Gregory Valentine, Kirsty Hillier, Raegan Hunt, C Mary Healy, Valeria Smith, Wendy Allen-Rhoades
A 3-week-old boy, former 39-week term infant, presented to the emergency department with a rash. One week before presentation, he developed dark, purple papules on his forehead, which then spread to the abdomen and inguinal regions. Throughout this time, he was eating well, gaining weight, developing appropriately, and was afebrile without cough, congestion, or rhinorrhea. On presentation, the patient was well appearing with normal vital signs. His weight was 4.83 kg (86th percentile for age), his length was 56 cm (47th percentile for age), and his head circumference was 37 cm (62nd percentile for age)...
June 2, 2017: Pediatrics
https://www.readbyqxmd.com/read/28810000/effect-of-a-blueberry-derived-antioxidant-matrix-on-infrared-a-induced-gene-expression-in-human-dermal-fibroblasts
#4
Susanne Grether-Beck, Jean Krutmann, Katherine Wilkens, Kasey D'Amato
<p>There is compelling evidence that Infrared A (IRA) from natural sunlight contributes to photoaging of human skin by inducing the expression of matrix metalloproteinase-1 (MMP-1) expression in human dermal fibroblasts. Corresponding mechanistic studies have shown that IRA does so by increasing the production of reactive oxygen species in irradiated cells. In the present study, we therefore asked if treatment of primary human skin fibroblasts with a blueberry-derived antioxidant matrix (BerrimatrixTM), which is employed as an active ingredient in commercially available skin care products that are topically applied, can prevent IRA-induced MMP-1 expression in these cells...
August 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28808544/flower-power-floral-and-resource-manipulations-reveal-how-and-why-reproductive-trade-offs-occur-for-lowbush-blueberry-vaccinium-angustifolium
#5
Alex W Bajcz, Francis A Drummond
Plant reproductive trade-offs are thought to be caused by resource limitations or other constraints, but more empirical support for these hypotheses would be welcome. Additionally, quantitative characterization of these trade-offs, as well as consideration of whether they are linear, could yield additional insights. We expanded our flower removal research on lowbush blueberry (Vaccinium angustifolium) to explore the nature of and causes of its reproductive trade-offs. We used fertilization, defoliation, positionally biased flower removal, and multiple flower removal levels to discern why reproductive trade-offs occur in this taxon and to plot these trade-offs along two continuous axes...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28796321/low-temperature-blanching-as-a-tool-to-modulate-the-structure-of-pectin-in-blueberry-purees
#6
Laura M Chevalier, Laurie-Eve Rioux, Paul Angers, Sylvie L Turgeon
Blueberry composition was characterized for 6 cultivars. It contains a good amount of dietary fiber (10% to 20%) and pectin (4% to 7%) whose degree of methylation (DM) is sensitive to food processing. A low temperature blanching (LTB: 60 °C/1 h) was applied on blueberry purees to decrease pectin DM, in order to modulate puree properties and functionalities (that is, viscosity and stability), and to enhance pectin affinity toward other components within food matrices. Fiber content, viscosity, pectin solubility, DM, and monosaccharide composition were determined for both pasteurized, and LTB+pasteurized blueberry purees...
August 10, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28772258/aspergilli-with-neosartorya-type-ascospores-heat-resistance-and-effect-of-sugar-concentration-on-growth-and-spoilage-incidence-in-berry-products
#7
Elettra Berni, Roberta Tranquillini, Nicoletta Scaramuzza, Andrea Brutti, Valentina Bernini
This study focused on four different heat resistant aspergilli: two strains of Aspergillus hiratsukae (≡Neosartorya hiratsukae), one strain of Aspergillus neoglaber (≡Neosartorya glabra), and one strain of Aspergillus thermomutatus (≡Neosartorya pseudofischeri), all isolated from spoiled pasteurized products. Their heat-resistance, the sugar concentration limiting their germination and growth in berry-based media, and a possible relation between the contamination levels of the raw materials used and the spoilage incidence in strawberry jams were assessed...
July 13, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28764953/effect-of-erythritol-formulation-on-the-mortality-fecundity-and-physiological-excretion-in-drosophila-suzukii
#8
Siew Bee Tang, Jana C Lee, Jin Kyo Jung, Man-Yeon Choi
Previously, we studied various combinations of non-nutritive sugars including erythritol and erythrose having a potentially insecticidal effect on Drosophila suzukii. The study suggested two potential physiological changes causing fly mortality: 1) starvation from the feeding of non-metabolizable erythritol and erythrose; 2) abnormal osmotic pressure increased in the hemolymph with erythritol transported from the midgut. In the present study, sucrose and erythritol were applied to blueberries and effects of these combinations on fly mortality and fecundity were monitored in the lab and greenhouse...
July 29, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28759392/a-3-week-old-with-an-isolated-blueberry-muffin-rash
#9
John B Darby, Gregory Valentine, Kirsty Hillier, Raegan Hunt, C Mary Healy, Valeria Smith, Wendy Allen-Rhoades
A 3-week-old boy, former 39-week term infant, presented to the emergency department with a rash. One week before presentation, he developed dark, purple papules on his forehead, which then spread to the abdomen and inguinal regions. Throughout this time, he was eating well, gaining weight, developing appropriately, and was afebrile without cough, congestion, or rhinorrhea. On presentation, the patient was well appearing with normal vital signs. His weight was 4.83 kg (86th percentile for age), his length was 56 cm (47th percentile for age), and his head circumference was 37 cm (62nd percentile for age)...
July 2017: Pediatrics
https://www.readbyqxmd.com/read/28754569/development-of-reliable-detection-assays-for-blueberry-mosaic-and-blackberry-vein-banding-associated-viruses-based-on-their-population-structures
#10
Thanuja Thekke-Veetil, Ioannis E Tzanetakis
Blueberry mosaic associated virus (BlMaV), the presumed causal agent of the homonymous disease and blackberry vein banding associated virus (BVBaV), a component of the blackberry yellow vein disease complex, are recently characterized RNA viruses. There is a need for efficient and sensitive detection protocols for the two viruses, not only for screening during the nursery propagation process but also in commercial fields to better understand virus epidemiology and minimize disease spread. RNA viruses display significant nucleotide variation forming quasi-species...
July 25, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28752872/a-study-of-glycaemic-effects-following-acute-anthocyanin-rich-blueberry-supplementation-in-healthy-young-adults
#11
L Bell, D J Lamport, L T Butler, C M Williams
The postprandial response to ingested carbohydrate is recognised as a marker of metabolic health. Postprandial hyperglycaemia is observed in type 2 diabetes mellitus and is a significant risk factor for cardiovascular disease. Cognitive deficits are also associated with type 2 diabetes. Therefore interventions which moderate postprandial glucose profiles are desirable. Here we investigated the impact of anthocyanin-rich wild blueberries on postprandial glucose response. Seventeen healthy young adults consumed a range of doses of freeze-dried wild blueberry powder, in smoothie form, in both sugar-matched and no-added-sugar conditions...
July 28, 2017: Food & Function
https://www.readbyqxmd.com/read/28730980/validation-of-spectrophotometric-methods-for-the-determination-of-total-polyphenol-and-total-flavonoid-content
#12
Petra Matić, Marija Sabljić, Lidija Jakobek
The aim of this study was to validate spectrophotometric methods for the measurement of total polyphenol (TP;via the Folin-Ciocalteu method) and total flavonoid (TF) content [via the aluminum chloride (AlCl₃) method]. Validation parameters of these methods were determined, including linearity, sensitivity, precision (intra-assay and intermediate), accuracy, LOD, and LOQ. For the validation process, groups of polyphenol standards were used, including phenolic acids (gallic, p-coumaric, caffeic, and chlorogenic acids), flavan-3-ols [(+)-catechin and procyanidins B1 and B2], flavonols (quercetin and quercetin-3-rutinoside), and dihydrochalcones (phloretin and phloretin-2-glucoside)...
July 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28730344/bearing-fruit-flower-removal-reveals-the-trade-offs-associated-with-high-reproductive-effort-for-lowbush-blueberry
#13
Alex W Bajcz, Francis A Drummond
Past studies have shown that taxa from disparate groups often respond similarly to reduced reproductive effort. These common responses imply that high reproductive effort trades off with a consistent set of other life functions for most angiosperms, albeit modulated by their growth form and life history. However, many questions remain about reproductive trade-offs in plants, including just how many other life functions they involve, how diverse these functions may be, and how the severity of these trade-offs may vary through time...
July 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28723243/pathogenicity-of-nectriaceous-fungi-on-avocado-in-australia
#14
Louisamarie Parkinson, Roger Shivas, Elizabeth Dann
Black root rot is a severe disease of young avocado trees in Australia causing black necrotic roots, tree stunting, and leaf drop prior to tree death. Nectriaceous fungi (Nectriaceae, Hypocreales), are commonly isolated from symptomatic roots. This research tested the pathogenicity of 19 isolates from Calonectria, Cylindrocladiella, Dactylonectria, Gliocladiopsis and Ilyonectria, spp. collected from young avocado trees and other hosts. Glasshouse pathogenicity tests with avocado (Persea americana) cv. Reed seedlings confirmed that Calonectria ilicicola is a severe pathogen of avocado, causing stunting, wilting and seedling death within 5 weeks of inoculation...
July 19, 2017: Phytopathology
https://www.readbyqxmd.com/read/28722782/development-of-blueberry-liquor-influence-of-distillate-sweetener-and-fruit-quantity
#15
Ilda Caldeira, Daniel Lopes, Teresa Delgado, Sara Canas, Ofélia Anjos
BACKGROUND: In this work different formulations of blueberry liquor were tested and characterized based on their physicochemical and sensory characteristics. RESULTS: Three factors were evaluated: the distillate used to produce the liquor (wine spirit or grape marc spirit); the sweetener (white sugar or honey) and the fruit quantity (two doses). For each liquor, pH, total acidity, dry soluble solids content, dry extract, alcoholic strength, reducing sugars, colour intensity, methanol content, acetaldehyde and fusel alcohols were determined...
July 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28713413/identification-of-conserved-and-novel-micrornas-in-blueberry
#16
Junyang Yue, Xiaohui Lu, Huan Zhang, Jiao Ge, Xueling Gao, Yongsheng Liu
MicroRNAs (miRNAs) are a class of small endogenous RNAs that play important regulatory roles in cells by negatively affecting gene expression at both transcriptional and post-transcriptional levels. There have been extensive studies aiming to identify miRNAs and to elucidate their functions in various plant species. In the present study, we employed the high-throughput sequencing technology to profile miRNAs in blueberry fruits. A total of 9,992,446 small RNA tags with sizes ranged from 18 to 30 nt were obtained, indicating that blueberry fruits have a large and diverse small RNA population...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28708983/preparation-of-nanoscale-iron-oxide-oxyhydroxides-and-zero-valent-particles-derived-from-blueberries-reactivity-characterization-and-removal-mechanism-of-arsenate
#17
Karen Manquián-Cerda, Edgardo Cruces, María Angélica Rubio, Camila Reyes, Nicolás Arancibia-Miranda
The application of iron nanoparticles (FeNPs) to the removal of various pollutants has received wide attention over the last few decades. A synthesis alternative to obtain these nanoparticles without using harmful chemical reagents, such as NaBH4, is the use of extracts from different natural sources that allow a lesser degree of agglomeration, in a process known as green synthesis. In this study, FeNPs were synthesized by 'green' (hereafter, BB-Fe NPs) and 'chemical' (hereafter, nZVI) methods. Extracts of leaves and blueberry shoots (Vaccinium corymbosum) were used as reducing agents for FeCl3·6H2O solution in the green synthesis method...
July 11, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28699753/identification-of-anthocyanins-from-four-kinds-of-berries-and-their-inhibition-activity-to-%C3%AE-glycosidase-and-protein-tyrosine-phosphatase-1b-by-hplc-ft-icr-ms-ms
#18
Ting Xiao, Zhenghong Guo, Baoshan Sun, Yuqing Zhao
The polyphenolic profiles of four berries (blueberry, bilberry, mulberry, and cranberry) in China were investigated using Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS). Thirty-nine polyphenols including 26 anthocyanins, 9 flavonoids, and 4 phenolic acids were identified accurately. Cyanidin aglycones are common in four berries, and malvidin aglycones are the main compounds found in bilberry and cranberry. The anthocyanin level in blueberry are the highest with 739.6 ± 17.14 mg/g DW and presented the strongest antioxidant capacity in DPPH, ABTS, FRAP, and ORAC assay...
August 2, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28696170/predicting-ascospore-release-of-monilinia-vaccinii-corymbosi-of-blueberry-with-machine-learning
#19
Dalphy Harteveld, Michael Grant, Jay W Pscheidt, Tobin Peever
Mummy berry, caused by Monilinia vaccinii-corymbosi, causes economic losses of highbush blueberry in the US Pacific Northwest (PNW). Apothecia develop from mummified berries overwintering on soil surfaces and produce ascospores that infect tissue emerging from floral and vegetative buds. Disease control currently relies on fungicides applied on a calendar-basis rather than inoculum availability. To establish a prediction model for ascospore release, apothecial development was tracked in three fields, one in western OR and two in northwestern WA in 2015 and 2016...
July 11, 2017: Phytopathology
https://www.readbyqxmd.com/read/28690159/probiotic-mediated-blueberry-vaccinium-corymbosum-l-fruit-fermentation-to-yield-functionalized-products-for-augmented-antibacterial-and-antioxidant-activity
#20
Byung-Taek Oh, Seong-Yeop Jeong, Palanivel Velmurugan, Jung-Hee Park, Do-Youn Jeong
The aim of this study was to investigate the fermentation of blueberry fruit with selected probiotic bacteria (Bacillus amyloliquefaciens and Lactobacillus brevis) and yeast (Starmerella bombicola) isolated from fermented starfish for the extraction of functionalized products for biomedical applications. All probiotic-based fermented extracts showed augmented antibacterial and antioxidant activity compared to the control. Biochemical parameters of viable cell count, titratable acidity, total phenol, total anthocyanin, total flavonoids, total sugar, and reducing sugar were analyzed during a 0-96 h fermentation period...
July 6, 2017: Journal of Bioscience and Bioengineering
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