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Mohammad Sadekuzzaman, Md Furkanur Rahaman Mizan, Sungdae Yang, Hyung-Suk Kim, Sang-Do Ha
Microbial biofilms pose a serious threat to food industry, as they are difficult to inactivate or remove owing to their inherent resistance to traditional physical and antimicrobial treatments. Bacteriophages have been suggested as promising biocontrol agents for eliminating biofilms within the food industry. The efficacy of phages (BP 1369 and BP 1370) was evaluated against Salmonella spp. in biofilms. Biofilms were grown on food (lettuce), food contact surfaces (stainless steel and rubber), and MBEC biofilm devices...
January 1, 2018: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
Mai Ishimiya, Hiroyuki Nakamura, Yutaka Kobayashi, Moeko Noguchi-Shinohara, Chiemi Abe, Chiaki Dohmoto, Yoshihisa Ikeda, Kahori Tokuno, Kazuhiro Ooi, Masami Yokokawa, Kazuo Iwasa, Kiyonobu Komai, Shuichi Kawashiri, Masahito Yamada
Although several studies have demonstrated a potential correlation of dietary patterns with cognitive function, the relationship between tooth loss and dietary patterns and cognitive function have not been identified. In this cross-sectional study, we used a reduced rank regression (RRR) analysis, a technique used previously to observe dietary patterns based on the intakes of nutrients or levels of biomarkers associated with the condition of interest, to identify tooth loss-related dietary patterns and investigate the associations of such patterns with cognitive impairment in 334 community-dwelling Japanese subjects aged ≥ 60 years...
2018: PloS One
Cao Son Trinh, Hyeri Lee, Won Je Lee, Seok Jin Lee, Namhyun Chung, Juhyeong Han, Jongyun Kim, Suk-Whan Hong, Hojoung Lee
Pseudomonas nitroreducens: strain IHB B 13561 (PnIHB) enhances the growth of Arabidopsis thaliana and Lactuca sativa via the stimulation of cell development and nitrate absorption. Plant growth-promoting rhizobacteria (PGPR) enhance plant development through various mechanisms; they improve the uptake of soil resources by plants to greatly promote plant growth. Here, we used Arabidopsis thaliana seedlings and Lactuca sativa to screen the growth enhancement activities of a purified PGPR, Pseudomonas nitroreducens strain IHB B 13561 (PnIHB)...
March 14, 2018: Plant Cell Reports
Fulai Li, Fan Li, Dan Luo, Weihua Lai, Yonghua Xiong, Hengyi Xu
Infectious diseases caused by Listeria monocytogenes pose a great threat to public health worldwide. Therefore, a rapid and efficient method for L. monocytogenes detection is needed. In this study, a biotin-exposure-based immunomagnetic separation (IMS) method was developed. That is, biotinylated antibody was first targeted to L. monocytogenes. Then, streptavidin-functionalized magnetic nanoparticles were added and anchored onto L. monocytogenes cells indirectly through the strong noncovalent interaction between streptavidin and biotin...
August 9, 2018: Analytica Chimica Acta
Tareq M Osaili, Akram R Alaboudi, Heba N Al-Quran, Anas A Al-Nabulsi
Enterobacteriaceae family can contaminate fresh produce at any stage of production either at pre-harvest or post-harvest stages. The objectives of the current study were to i) identify Enterobacteriaceae species on iceberg lettuce, ii) compare the decontamination efficiency of water, sodium hypochlorite (free chlorine 200 ppm), peroxyacetic acid (PA 80 ppm; Kenocid 2100® ) or their combinations and ionizing radiation against Enterobacteriaceae on shredded iceberg lettuce and iii) determine the survival of Enterobacteriaceae post-treatment storage of shredded iceberg lettuce at 4, 10 and 25 °C, for up to 7 days...
August 2018: Food Microbiology
Chenzhipeng Nie, Peilei Zhu, Shuping Ma, Mingchun Wang, Youdong Hu
Stem lettuce has a long history of cultivation in China and possesses high nutritional and medicinal value. In our previous studies, extraction optimization, characterization, and bioactivities of stem lettuce polysaccharides (SLP) were investigated. In this study, SLP were further separated into two purified polysaccharides, SLP-1 and SLP-2, by anion exchange chromatography followed by size exclusion chromatography. SLP-1, with a molecular weight of 90 KDa, was mainly composed of galacturonic acid, galactose and arabinose in a molar ratio of 17...
May 15, 2018: Carbohydrate Polymers
Priscila Aparecida Milani, Karina Bugan Debs, Geórgia Labuto, Elma Neide Vasconcelos Martins Carrilho
Sugarcane bagasse and hydroponic lettuce roots were used as biosorbents for Cu(II), Fe(II), Zn(II), and Mn(II) removal from monoelemental solutions in aqueous medium, at pH 5.5, using batch procedures. These biomasses were studied in natura (lettuce roots, NLR, and sugarcane bagasse, NSB) and modified with HNO3 (lettuce roots, MLR, and sugarcane bagasse, MSB). Langmuir, Freundlich, and Dubinin-Radushkevich non-linear isotherm models were used to evaluate the data from the metal ion adsorption assessment. The maximum adsorption capacities (qmax ) in monoelemental solution, calculated using the Langmuir isothermal model for Cu(II), Fe(II), Zn(II), and Mn(II), were respectively 24...
March 8, 2018: Environmental Science and Pollution Research International
Yang Hu, Le Wang, Lirong Xiang, Qian Wu, Huanyu Jiang
Non-destructive plant growth measurement is essential for plant growth and health research. As a 3D sensor, Kinect v2 has huge potentials in agriculture applications, benefited from its low price and strong robustness. The paper proposes a Kinect-based automatic system for non-destructive growth measurement of leafy vegetables. The system used a turntable to acquire multi-view point clouds of the measured plant. Then a series of suitable algorithms were applied to obtain a fine 3D reconstruction for the plant, while measuring the key growth parameters including relative/absolute height, total/projected leaf area and volume...
March 7, 2018: Sensors
Katyelle Rafael, Ariella A Marchioro, Cristiane M Colli, Bruna T Tiyo, Fernanda F Evangelista, Renata C Bezagio, Ana L Falavigna-Guilherme
Background: In order to investigate the occurrence of Giardia duodenalis and its genotypes in vegetables that are consumed raw, we analyzed samples cultivated with organic or chemical fertilizer, sold in street markets and from community vegetable gardens in an urban area located in Southern Brazil. Methods: We analyzed 130 samples of vegetables such as crisp lettuce, regular lettuce, kale, chicory and rocket, from street markets, and 130 from community gardens...
March 6, 2018: Transactions of the Royal Society of Tropical Medicine and Hygiene
Eleuza R Machado, Iriani R Maldonade, Roberta F R Riquette, Vinícios S Mendes, Rodrigo Gurgel-Gonçalves, Veronica C Ginani
The consumption of raw vegetables is related to health benefits. However, these foods might be source of foodborne diseases. The objective of the present study was to perform a microbiological and parasitological evaluation of the leafy vegetables commercially sold in five regions of Brazil at public wholesale markets. The 12 types of leafy vegetables (144 samples) were curly lettuce, looseleaf lettuce, red lettuce, chives, coriander, kale, basil, arugula, parsley, iceberg lettuce, chicory, and bean sprouts...
April 2018: Journal of Food Protection
Lien D Bertier, Mily Ron, Heiqiang Huo, Kent J Bradford, Richard W Michelmore
CRISPR/Cas9 is a transformative tool for making targeted genetic alterations. In plants, high mutation efficiencies have been reported in primary transformants. However, many of the mutations analyzed were somatic and therefore not heritable. To provide more insights into the efficiency of creating stable homozygous mutants using CRISPR/Cas9, we targeted LsNCED4 ( 9-cis-epoxycarotenoid dioxygenase4) , a gene conditioning thermoinhibition of seed germination in lettuce. Three constructs, each capable of expressing Cas9 and a single gRNA targeting different sites in LsNCED4 , were stably transformed into lettuce (Lactuca sativa) cvs...
March 6, 2018: G3: Genes—Genomes—Genetics
F G Ceglie, M L Amodio, Mlv de Chiara, S Mazdaric, G Mimiola, E Testani, F Tittarelli, G Colelli
BACKGROUND: This research focused on the effect of organic production systems on initial quality and postharvest performances of lamb's lettuce leaves stored in air or under modified atmosphere at refrigerated temperature. Different strategies of organic soil fertility management were compared under the same environmental conditions: i) a simplified organic production system based on organic commercial fertilizers to recover crop uptake (SB); ii) an organic production system based on organic matter amendment mainly supplied by animal manure (AM), and iii) an organic production system based on organic matter amendment supplied by green waste compost (AC)...
March 6, 2018: Journal of the Science of Food and Agriculture
Fabio Eduardo Dos Santos, Marcos Schleiden Sousa Carvalho, Graciele Lurdes Silveira, Felipe Folgaroli Correa, Maria das Graças Cardoso, Larissa Fonseca Andrade-Vieira, Luciane Resende Vilela
Plants are rich in biologically active compounds. They can be explored for the production of bioherbicides. In this context, the present work aimed to evaluate the allelopathic effect of hydroalcoholic extracts from two Solanaceae species: Solanum muricatum Ait. and Solanum betaceum Cav. For this end, we conducted phytochemical screening and biological assays, determining the effects of the extracts on germination, early development, cell cycle, and DNA fragmentation in plantlets and meristematic cells of the plant model Lactuca sativa L...
March 5, 2018: Environmental Science and Pollution Research International
Yong-Biao Liu
A research-scale phosphine generator, QuickPHlo-R, from United Phosphorus Ltd. (Mumbai, India) was tested to determine whether it was suitable for low-temperature fumigation and oxygenated phosphine fumigation of harvested lettuce. Vacuum cooled Iceberg and Romaine lettuce (Lactuca sativa) were fumigated in 442-liter chambers at 2°C for 24 and 72 h for control of western flower thrips [Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] and lettuce aphid [Nasonovia ribisnigri (Mosely) (Homoptera: Aphididae)]...
February 28, 2018: Journal of Economic Entomology
Juan Carlo Intriago, Francisco López-Gálvez, Ana Allende, Gaetano Alessandro Vivaldi, Salvatore Camposeo, Emilio Nicolás Nicolás, Juan José Alarcón, Francisco Pedrero Salcedo
The DESERT-prototype, a state-of-the-art compact combination of water treatment technologies based on filtration and solar-based renewable energy, was employed to reclaim water for agricultural irrigation. Water reclaimed through the DESERT-prototype (PW) from a secondary effluent of a wastewater treatment plant, as well as conventional irrigation water (CW) and the secondary effluent (SW) itself, were employed to cultivate baby romaine lettuces in a greenhouse in Murcia (Spain), by means of drip and sprinkler irrigation methods, thus establishing six treatments...
February 26, 2018: Journal of Environmental Management
Zhonghua Bian, Qichang Yang, Tao Li, Ruifeng Cheng, Yvonne Barnett, Chungui Lu
Red and blue light are the most important light spectra for driving photosynthesis to produce adequate crop yield. It is also believed that green light may contribute to adaptations to growth. However, the effects of green light, which can trigger specific and necessary responses of plant growth, have been underestimated in the past. In this study, lettuce (Lactuca sativa L.) was exposed to different continuous light (CL) conditions for 48 h by a combination of red and blue light-emitting diodes (LEDs) supplemented with or without green LEDs, in an environmental-controlled growth chamber...
March 1, 2018: Physiologia Plantarum
Yingjie Miao, Guotong Xiong, Mengyang Bai, Ying Ge, Zufang Wu
Fresh-cut produce is at greater risk of Salmonella contamination. Detection and early warning systems play an important role in reducing the dissemination of contaminated products. One-step Reverse Transcription Polymerase Chain Reaction (RT-qPCR) targeting Salmonella tmRNA with or without a 6-h enrichment was evaluated for the detection of Salmonella in fresh-cut vegetables after 6-h storage. LOD of one-step RT-qPCR was 1.0 CFU ml-1 (about 100 copies tmRNA ml-1 ) by assessed 10-fold serially diluted RNA from 106 CFU ml-1 bacteria culture...
February 28, 2018: Letters in Applied Microbiology
Yonglin Wang, Xiaoping Hu, Yulin Fang, Amy Anchieta, Polly H Goldman, Gustavo Hernandez, Steven J Klosterman
Verticillium dahliae is a soilborne fungus that causes vascular wilt diseases on numerous plant species worldwide. The production of darkly melanized microsclerotia is crucial in the disease cycle of V. dahliae, as these structures allow for long-term survival in soil. Previously, transcriptomic and genomic analysis identified a cluster of genes in V. dahliae that encodes some dihydroxynaphthalene (DHN) melanin biosynthetic pathway homologues found in related fungi. In this study, we explored the roles of cluster-specific transcription factor VdCmr1, as well as two other genes within the cluster encoding a polyketide synthase (VdPKS1) and a laccase (VdLac1), enzymes at initial and endpoint steps in DHN melanin production...
February 27, 2018: Microbiology
Elisabete F Dias, Norbert Kilian, Luís Silva, Hanno Schaefer, Mark Carine, Paula J Rudall, Arnoldo Santos-Guerra, Mónica Moura
The phylogenetic relationships and phylogeography of two relatively rare Macaronesian Lactuca species, Lactuca watsoniana (Azores) and L. palmensis (Canary Islands), were, until this date, unclear. Karyological information of the Azorean species was also unknown. For this study, a chromosome count was performed and L. watsoniana showed 2n = 34. A phylogenetic approach was used to clarify the relationships of the Azorean endemic L. watsoniana and the La Palma endemic L. palmensis within the subtribe Lactucinae...
February 24, 2018: Biochemical Genetics
Adriano Sofo, Inês Moreira, Concetta Eliana Gattullo, Luisa Louro Martins, Miguel Mourato
Zinc (Zn) is a common heavy metal in polluted soils, as it is a widespread pollutant deriving both from natural sources and anthropogenic activities. The antioxidant tolerance/defence mechanisms against oxidative stress induced by subtoxic concentrations of Zn (50 and 150 μM ZnSO4 ) were studied in a widespread edible plant (lettuce; Lactuca sativa L.) and in an important model plant (Arabidopsis thaliana (L.) Heynh.). After 10 days (Arabidopsis) and 20 days (lettuce) of Zn exposure, Zn uptake/translocation was evaluated in both roots and shoots, while indicators of oxidative stress and stress intensity, total antioxidant capacity, and enzymatic and non-enzymatic antioxidative defence were measured in leaves...
February 15, 2018: Journal of Trace Elements in Medicine and Biology
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