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https://www.readbyqxmd.com/read/28732865/effect-of-molecular-weight-of-chitosan-on-the-shelf-life-and-other-quality-parameters-of-three-different-cultivars-of-actinidia-kolomikta-kiwifruit
#1
Tomas Drevinskas, Gintarė Naujokaitytė, Audrius Maruška, Murat Kaya, Idris Sargin, Remigijus Daubaras, Laima Česonienė
The kiwi fruit, Actinidia kolomikta, has valuable properties such as high antioxidant activity, high vitamin C, polyphenols, chlorophylls and organic acids content, but the species are hardly commercialized due to their short shelf life (less than two days). In this study three different cultivars of A. kolomikta (Anykšta, Sentiabrskaya and VIR2) were coated with low, medium and high molecular weight chitosan bio-polymer with the aim to extend the shelf life. The changes in fruit firmness, mass, phenolic compound content, vitamin C content and subjective criteria (withering level, decoloration level and aesthetic appearance) were monitored...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28720800/itraq-based-quantitative-proteomic-analysis-reveals-alterations-in-the-metabolism-of-actinidia-arguta
#2
Miaomiao Lin, Jinbao Fang, Xiujuan Qi, Yukuo Li, Jinyong Chen, Leiming Sun, Yunpeng Zhong
Actinidia arguta 'Tianyuanhong' is a new kiwifruit variety with an all-red pericarp and pulp, in contrast to the all-green pulp of A. arguta 'Yongfengyihao'. Transcriptome profile analysis of fruit color has been reported, however, the metabolic mechanisms producing red flesh remain unknown, and it is unclear why the pulp of 'Tianyuanhong' is red rather than green. Herein, we identified differences between the proteomes of two A. arguta cultivars with different fruit color by using iTRAQ-based quantitative proteomic methods during the stage of color change...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28687784/whole-transcriptome-sequencing-of-pseudomonas-syringae-pv-actinidiae-infected-kiwifruit-plants-reveals-species-specific-interaction-between-long-non-coding-rna-and-coding-genes
#3
Zupeng Wang, Yifei Liu, Li Li, Dawei Li, Qiong Zhang, Yangtao Guo, Shuaibin Wang, Caihong Zhong, Hongwen Huang
An outbreak of kiwifruit bacterial canker disease caused by Pseudomonas syringae pv. actinidiae (Psa) beginning in 2008 caused disaster to the kiwifruit industry. However the mechanisms of interaction between kiwifruit and Psa are unknown. Long noncoding RNAs (lncRNAs) are known to regulate many biological processes, but comprehensive repertoires of kiwifruit lncRNAs and their effects on the interaction between kiwifruit and Psa are unknown. Here, based on in-depth transcriptomic analysis of four kiwifruit materials at three stages of infection with Psa, we identified 14,845 transcripts from 12,280 loci as putative lncRNAs...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28672690/valorization-of-starchy-cellulosic-and-sugary-food-waste-into-hydroxymethylfurfural-by-one-pot-catalysis
#4
Iris K M Yu, Daniel C W Tsang, Alex C K Yip, Season S Chen, Yong Sik Ok, Chi Sun Poon
This study aimed to produce a high-value platform chemical, hydroxymethylfurfural (HMF), from food waste and evaluate the catalytic performance of trivalent and tetravalent metals such as AlCl3, CrCl3, FeCl3, Zr(O)Cl2, and SnCl4 for one-pot conversion. Starchy food waste, e.g., cooked rice and penne produced 4.0-8.1 wt% HMF and 46.0-64.8 wt% glucose over SnCl4 after microwave heating at 140 °C for 20 min. This indicated that starch hydrolysis was effectively catalyzed but subsequent glucose isomerization was rate-limited during food waste valorization, which could be enhanced by 40-min reaction to achieve 22...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28672040/comparative-transcript-profiling-explores-differentially-expressed-genes-associated-with-sexual-phenotype-in-kiwifruit
#5
Ping Tang, Qiong Zhang, Xiaohong Yao
BACKGROUND: Kiwifruit is a perennial, deciduous and functionally dioecious plant. However, very little is known about the whole-genome molecular mechanisms contributing to distinct sexual phenotypes. To gain a global view of genes differentially expressed between male and female flowers, we analyzed genome-wide gene expression profiles in the flowers of male and female plants using high-throughput RNA sequencing. RESULTS: A total of 53.5 million reads were generated...
2017: PloS One
https://www.readbyqxmd.com/read/28640214/a-pilot-randomized-cross-over-trial-to-examine-the-effect-of-kiwifruit-on-satiety-and-measures-of-gastric-comfort-in-healthy-adult-males
#6
Alison Wallace, Sarah Eady, Lynley Drummond, Duncan Hedderley, Juliet Ansell, Richard Gearry
'Hayward' kiwifruit anecdotally are associated with improved gastrointestinal comfort following the consumption of high protein meals, possibly because of the presence of a protease enzyme, actinidin. The study aimed to use SmartPill™ technology to investigate the acute effect of kiwifruit with actinidin (Actinidia chinensis var. deliciosa 'Hayward') and kiwifruit without actinidin (A. chinensis var. chinensis 'Hort16A') on digestion of a large protein meal. Ten healthy male subjects were recruited. The participants attended the clinic three times, having fasted overnight...
June 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28624093/osmotic-dehydration-of-organic-kiwifruit-pre-treated-by-pulsed-electric-fields-and-monitored-by-nmr
#7
Maria Victoria Traffano-Schiffo, Luca Laghi, Marta Castro-Giraldez, Urszula Tylewicz, Pietro Rocculi, Luigi Ragni, Marco Dalla Rosa, Pedro J Fito
Osmotic dehydration (OD) is a widely used preservation technique that consists in the reduction in food water activity by the immersion of the biological tissue in hypertonic solutions. The aim of this work was to analyze the effect of pulsed electric fields (PEF) in mass transfer as a pre-treatment of the OD using NMR. In this sense, PEF pre-treatments were done using three different voltages (100, 250 and 400V/cm) and 60 number of pulse. The OD of kiwifruit was carried out in 61.5% of sucrose solution at 25°C, for a contact period from 0 to 120min...
December 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28620210/a-bacterial-acetyltransferase-triggers-immunity-in-arabidopsis-thaliana-independent-of-hypersensitive-response
#8
Jay Jayaraman, Sera Choi, Maxim Prokchorchik, Du Seok Choi, Amandine Spiandore, Erik H Rikkerink, Matthew D Templeton, Cécile Segonzac, Kee Hoon Sohn
Type-III secreted effectors (T3Es) play critical roles during bacterial pathogenesis in plants. Plant recognition of certain T3Es can trigger defence, often accompanied by macroscopic cell death, termed the hypersensitive response (HR). Economically important species of kiwifruit are susceptible to Pseudomonas syringae pv. actinidiae (Psa), the causal agent of kiwifruit bacterial canker. Although Psa is non-pathogenic in Arabidopsis thaliana, we observed that a T3E, HopZ5 that is unique to a global outbreak clade of Psa, triggers HR and defence in Arabidopsis accession Ct-1...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28613977/the-scientific-economic-and-social-impacts-of-the-new-zealand-outbreak-of-bacterial-canker-of-kiwifruit-pseudomonas-syringae-pv-actinidiae
#9
Joel L Vanneste
The introduction of Pseudomonas syringae pv. actinidiae (Psa) severely damaged the New Zealand kiwifruit industry, which in 2010 was based on only two cultivars. Despite an extraordinarily quick and strong response by industry, government, and scientists to minimize the economic and social impacts, the economic consequences of this outbreak were severe. Although our understanding of Psa epidemiology and control methods increased substantively over the past six years, the kiwifruit industry largely recovered because of the introduction of a less-susceptible yellow-fleshed cultivar...
June 14, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28598694/kiwifruit-ameliorates-gentamicin-induced-histological-and-histochemical-alterations-in-the-kidney-of-albino-mice
#10
Y I Mahmoud, S Farag
Gentamicin is an antibiotic used worldwide for treating Gram-negative bacterial infections. Gentamicin causes nephrotoxicity in up to 25% of therapeutic cases owing to increased production of free radicals. Kiwifruit are nutrient-dense fruits that have proven effective for ameliorating many pathological conditions caused by oxidative stress. We investigated the possible prophylactic and therapeutic effects of kiwifruit on the changes in renal histology and histochemistry caused by gentamicin. Intramuscular injection of mice with gentamicin for 10 consecutive days was nephrotoxic as indicated by epithelial vacuolization, glomerular atrophy and tubular necrosis...
June 9, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28572946/experimental-and-modeling-investigation-of-mass-transfer-during-combined-infrared-vacuum-drying-of-hayward-kiwifruits
#11
Emad Aidani, Mohammadhossein Hadadkhodaparast, Mahdi Kashaninejad
In this work, we tried to evaluate mass transfer during a combined infrared-vacuum drying of kiwifruits. Infrared radiation power (200-300 W) and system pressure (5-15 kPa), as drying parameters, are evaluated on drying characteristics of kiwifruits. Both the infrared lamp power and vacuum pressure affected the drying time of kiwifruit slices. Nine different mathematical models were evaluated for moisture ratios using nonlinear regression analysis. The results of regression analysis indicated that the quadratic model is the best to describe the drying behavior with the lowest SE values and highest R value...
May 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28558268/identification-of-in-situ-flower-volatiles-from-kiwifruit-actinidia-chinensis-var-deliciosa-cultivars-and-their-male-pollenisers-in-a-new-zealand-orchard
#12
Andrew M Twidle, David M Suckling, Alan G Seal, Bruno Fedrizzi, Lisa I Pilkington, David Barker
In situ flower volatiles from six kiwifruit cultivars (Actinidia chinensis var. deliciosa); 'Hayward', 'Chieftain', 'M56', 'Zes007' (Green11), 'M36', and 'M43' were collected by dynamic headspace sampling. Forty-five compounds were detected in the headspace of the flowers, with straight chain hydrocarbons and terpenes accounting for >98% of the volatiles emitted quantitatively across the six cultivars. Of these hydrocarbons, (3Z,6Z,9Z)-heptadecatriene is reported for the first time from a floral source while (8Z)-hexadecene and (9Z)-nonadecene are reported for the first time from kiwifruit flowers...
September 2017: Phytochemistry
https://www.readbyqxmd.com/read/28557573/putative-mechanisms-of-kiwifruit-on-maintenance-of-normal-gastrointestinal-function
#13
Simone Birgit Bayer, Richard Blair Gearry, Lynley Ngaio Drummond
Kiwifruit are recognized as providing relief from constipation and symptoms of constipation-predominant irritable bowel syndrome (IBS-C). However, the underlying mechanisms, specifically in regards to gastrointestinal transit time and motility, are still not completely understood. This review provides an overview on the physiological and pathophysiological processes underlying constipation and IBS-C, the composition of kiwifruit, and recent advances in the research of kiwifruit and abdominal comfort. Additionally, gaps in the research are highlighted and scientific studies of other foods with known effects on the gastrointestinal tract are consulted to find likely mechanisms of action...
May 30, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28551271/comparison-of-fruit-quality-and-gc-ms-based-metabolite-profiling-of-kiwifruit-jecy-green-natural-and-exogenous-ethylene-induced-ripening
#14
Sooyeon Lim, Jeong Gu Lee, Eun Jin Lee
We applied exogenous ethylene to 'Jecy green' kiwifruit to elucidate the differences in fruit quality and metabolite profiling between naturally ripe (NR) and ethylene-induced ripe (ER) kiwifruit. Kiwifruit were exposed to ethylene (200μL/L) for 12h at 20°C and maintained for 9days at 20°C. Two metabolites of ascorbic acid and arabinose significantly decreased during kiwifruit ripening regardless of the ripening method. The concentrations of sucrose, myo-inositol, citric acid, and malic acid in NR fruit were substantially higher than those in ER fruit, while the concentrations of fructose, glucose, and quinic acid in ER fruit were higher than those in NR fruit...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28543189/rapid-radiations-of-both-kiwifruit-hybrid-lineages-and-their-parents-shed-light-on-a-two-layer-mode-of-species-diversification
#15
Yifei Liu, Dawei Li, Qiong Zhang, Chi Song, Caihong Zhong, Xudong Zhang, Ying Wang, Xiaohong Yao, Zupeng Wang, Shaohua Zeng, Ying Wang, Yangtao Guo, Shuaibin Wang, Xinwei Li, Li Li, Chunyan Liu, Honour C McCann, Weiming He, Yan Niu, Min Chen, Liuwen Du, Junjie Gong, Paul M Datson, Elena Hilario, Hongwen Huang
Reticulate speciation caused by interspecific hybridization is now recognized as an important mechanism in the creation of biological diversity. However, depicting the patterns of phylogenetic networks for lineages that have undergone interspecific gene flow is challenging. Here we sequenced 25 taxa representing natural diversity in the genus Actinidia with an average mapping depth of 26× on the reference genome to reconstruct their reticulate history. We found evidence, including significant gene tree discordance, cytonuclear conflicts, and changes in genome-wide heterozygosity across taxa, collectively supporting extensive reticulation in the genus...
May 25, 2017: New Phytologist
https://www.readbyqxmd.com/read/28490110/multivariate-statistical-analysis-of-the-polyphenolic-constituents-in-kiwifruit-juices-to-trace-fruit-varieties-and-geographical-origins
#16
Jing Guo, Yahong Yuan, Pei Dou, Tianli Yue
Fifty-one kiwifruit juice samples of seven kiwifruit varieties from five regions in China were analyzed to determine their polyphenols contents and to trace fruit varieties and geographical origins by multivariate statistical analysis. Twenty-one polyphenols belonging to four compound classes were determined by ultra-high-performance liquid chromatography coupled with ultra-high-resolution TOF mass spectrometry. (-)-Epicatechin, (+)-catechin, procyanidin B1 and caffeic acid derivatives were the predominant phenolic compounds in the juices...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28486974/cell-separation-in-kiwifruit-without-development-of-a-specialised-detachment-zone
#17
Roneel Prakash, Ian C Hallett, Sally F Wong, Sarah L Johnston, Erin M O'Donoghue, Peter A McAtee, Alan G Seal, Ross G Atkinson, Roswitha Schröder
BACKGROUND: Unlike in abscission or dehiscence, fruit of kiwifruit Actinidia eriantha develop the ability for peel detachment when they are ripe and soft in the absence of a morphologically identifiable abscission zone. Two closely-related genotypes with contrasting detachment behaviour have been identified. The 'good-peeling' genotype has detachment with clean debonding of cells, and a peel tissue that does not tear. The 'poor-peeling' genotype has poor detachability, with cells that rupture upon debonding, and peel tissue that fragments easily...
May 10, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28396678/identification-of-circular-rnas-in-kiwifruit-and-their-species-specific-response-to-bacterial-canker-pathogen-invasion
#18
Zupeng Wang, Yifei Liu, Dawei Li, Li Li, Qiong Zhang, Shuaibin Wang, Hongwen Huang
Research studies have recently focused on circle RNAs (circRNAs) in relation to their regulatory functions in animals. However, the systematic identification of circRNAs in plants, especially non-model plants, is limited. In addition, raw report on the prediction of the potential role of circRNAs in plant response to pathogen invasion is currently available. We conducted the systematic identification of circRNAs from four materials originating from three species belonging to genus Actinidia under different situations using ribosomal RNA (rRNA) depleted RNA-Seq data...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28386309/kiwifruit-alleviates-learning-and-memory-deficits-induced-by-pb-through-antioxidation-and-inhibition-of-microglia-activation-in-vitro-and-in-vivo
#19
Wei-Zhen Xue, Qian-Qian Yang, Yiwen Chen, Rong-Xin Zou, Dong Xing, Yi Xu, Yong-Sheng Liu, Hui-Li Wang
Lead (Pb) exposure, in particular during early postnatal life, increases susceptibility to cognitive dysfunction and neurodegenerative outcomes. The detrimental effect of Pb exposure is basically due to an increasing ROS production which overcomes the antioxidant systems and finally leads to cognitive dysfunction. Kiwifruit is rich in the antioxidants like vitamin C and polyphenols. This study aims to investigate the effects and mechanism of kiwifruit to alleviate learning and memory deficits induced by Pb exposure...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28385839/draft-genome-sequences-of-pectobacterium-carotovorum-subsp-actinidiae-icmp-19971-and-icmp-19972-two-strains-isolated-from-actinidia-chinensis-with-symptoms-of-summer-canker-in-south-korea
#20
Sandra B Visnovsky, Preetinanda Panda, Robert Taylor, Andrew R Pitman
Pectobacterium carotovorum subsp. actinidiae is the causal agent of summer canker in kiwifruit plants in South Korea. We report here the draft genome sequences of two P. carotovorum subsp. actinidiae strains, ICMP 19971 and ICMP 19972, which were originally isolated from Actinidia chinensis with symptoms of summer canker. These genome sequences will aid in the identification of genetic traits associated with their unusual capacity to cause canker and help understanding of the threat these exotic enterobacteria pose to the New Zealand kiwifruit industry...
April 6, 2017: Genome Announcements
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