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1. Hyperspectral technique combined with deep learning algorithm for detection of compound heavy metals in lettuce

Author:
Zhou, Xin; Sun, Jun; Tian, Yan; Lu, Bing; Hang, Yingying; Chen, Quansheng
Source:
Food chemistry 2020 v.321 pp. 126503
ISSN:
0308-8146
Subject:
lettuce,   etc   ; Lactuca sativa; cadmium; heavy metals; hyperspectral imagery; lead; leaves; prediction; support vector machines; wavelet;     Show all 10 Subjects
Abstract:
... The aim of this research was to develop a deep learning method which involved wavelet transform (WT) and stack convolution auto encoder (SCAE) for extracting compound heavy metals detection deep features of lettuce leaves. WT was used to decompose the visible-near infrared (400.68–1001.61 nm) hyperspectral image of lettuce sample in the multi-scale transform to acquire the optimal wavelet decompos ...
DOI:
10.1016/j.foodchem.2020.126503

2. Effectiveness of short exposure times to electrolyzed water in reducing Salmonella spp and Imidacloprid in lettuce

Author:
Cap, Mariana; Rojas, Dante; Fernandez, Mariano; Fulco, Micaela; Rodriguez, Anabel; Soteras, Trinidad; Cristos, Diego; Mozgovoj, Marina
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2020 v.128 pp. 109496
ISSN:
0023-6438
Subject:
lettuce,   etc   ; Salmonella; biological hazards; chlorine; electrolyzed water; exposure duration; flavor; fresh produce; imidacloprid; industry; texture;     Show all 11 Subjects
Abstract:
... EW has been proposed as a sanitization method for home use to reduce chemical and biological hazards in fresh products. Most studies have evaluated exposure times of 1–10 min which may be too long for processing fresh produce. The aim of this work was to evaluate if short exposure times (15, 30 or 45 s) to electrolyzed water (EW – 50 ppm of free chlorine) were enough to significantly reduce Salmon ...
DOI:
10.1016/j.lwt.2020.109496

3. Real-time robotic weed knife control system for tomato and lettuce based on geometric appearance of plant labels

Author:
Raja, Rekha; Nguyen, Thuy T.; Slaughter, David C.; Fennimore, Steven A.
Source:
Biosystems engineering 2020 v.194 pp. 152-164
ISSN:
1537-5110
Subject:
lettuce,   etc   ; algorithms; automation; geometry; labor; manual weed control; robots; seedlings; tomatoes; vegetable crops; weeds;     Show all 11 Subjects
Abstract:
... Automated weed management tools in vegetable crops are needed to reduce or eliminate hand-weeding because of labour shortages and cost. Distinguishing crop plants from weeds in complex natural scenes of crop-weed mixtures remains a challenge for weed management automation. This paper presents a novel solution to the weed control problem by employing crop signalling technology: a novel systems appr ...
DOI:
10.1016/j.biosystemseng.2020.03.022

4. Effects of exogenous abscisic acid on the growth and cadmium accumulation of lettuce under cadmium-stress conditions

Author:
Tang, Yi; Wang, Liming; Xie, Yongdong; Yu, Xuena; Li, Huanxiu; Lin, Lijin; Liao, Ming’An; Wang, Zhihui; Sun, Guochao; Wang, Xun; Liang, Dong; Xia, Hui; Tu, Lihua
Source:
International journal of environmental analytical chemistry 2020 v.100 no.6 pp. 720-731
ISSN:
1029-0397
Subject:
lettuce,   etc   ; Lactuca sativa; abscisic acid; biomass; cadmium; heavy metals; shoots; spraying; toxicity;     Show all 9 Subjects
Abstract:
... Abscisic acid (ABA) is an important hormone that can regulate the heavy-metal uptake of plants. In this study, exogenous ABA was applied to lettuce (Lactuca sativa) grown under cadmium (Cd)-stress conditions, and the effects of exogenous ABA on the growth and Cd accumulation of lettuce were evaluated. The results showed that treatment of Cd significantly decreased biomass and increased Cd content ...
DOI:
10.1080/03067319.2019.1639686

5. Development of a selective and differential media for the isolation and enumeration of Bacillus cereus from food samples

Author:
Talahmeh, N.; Abu‐Rumeileh, S.; Al‐Razem, F.
Source:
Journal of applied microbiology 2020 v.128 no.5 pp. 1440-1447
ISSN:
1364-5072
Subject:
lettuce,   etc   ; Bacillus cereus; agar; food industry; food matrix; food pathogens; foods; microorganisms; potatoes; quality control;     Show all 10 Subjects
Abstract:
... AIM: Identification and enumeration of foodborne pathogens in food stuffs are valuable concerns. In the present study, starch‐blood‐egg yolk‐polymyxin B‐trimethoprim‐ceftazidime (SBYPTC) agar was established to isolate and specify the number of Bacillus cereus in food products. METHODS AND RESULTS: The effectiveness of the developed medium in selecting for B. cereus from pure cultures and food mat ...
DOI:
10.1111/jam.14561

6. Culturable bacteria resident on lettuce might contribute to accumulation of human noroviruses

Author:
Liu, Danlei; Zhang, Zilei; Liao, Ningbo; Zou, Songyan; Tang, Haoxuan; Tian, Peng; Young, Glenn M.; Wu, Qingping; Wang, Dapeng
Source:
International journal of food microbiology 2020 v.317 pp. 108492
ISSN:
0168-1605
Subject:
romaine lettuce,   etc   ; Lactuca sativa; Norovirus; Pseudomonas; antigens; gastroenteritis; genotype; leaves; monoclonal antibodies; polysaccharides;     Show all 10 Subjects
Abstract:
... Human noroviruses (HuNoVs) are the primary non-bacterial pathogens causing acute gastroenteritis worldwide. Attachment and invasion of HuNoVs are thought to involve histo-blood group antigens (HBGAs). Romaine lettuce, which is usually consumed raw, is a common food-related vehicle for HuNoVs transmission. This study investigated the possibility that bacteria resident on the surface of lettuce leav ...
DOI:
10.1016/j.ijfoodmicro.2019.108492

7. Spatial price dynamics in the US vegetable sector

Author:
Durborow, Samantha L.; Kim, Seon‐Woong; Henneberry, Shida R.; Brorsen, B. Wade
Source:
Agribusiness 2020 v.36 no.1 pp. 59-78
ISSN:
0742-4477
Subject:
lettuce,   etc   ; carrots; markets; models; onions; potatoes; prices; probability; shipping; United States;     Show all 10 Subjects
Abstract:
... This study investigates price transmission in the US fresh vegetable market, considering four important vegetables: carrots, lettuce, onions, and potatoes. An asymmetric variable‐threshold autoregressive (AvTAR) model was used to estimate price relationships between 40 pairs of terminal market vegetable prices, whereas the parity bounds model (PBM) was used to estimate the probability of 22 shippi ...
DOI:
10.1002/agr.21603

8. Correction to: The LsVe1L allele provides a molecular marker for resistance to Verticillium dahliae race 1 in lettuce

Author:
Inderbitzin, Patrik; Christopoulou, Marilena; Lavelle, Dean; Reyes-Chin-Wo, Sebastian; Michelmore, Richard W.; Subbarao, Krishna V.; Simko, Ivan
Source:
BMC plant biology 2019 v.19 no.1 pp. 374
ISSN:
1471-2229
Subject:
lettuce,   etc   ; Verticillium dahliae; alleles; genetic markers;     Show all 4 Subjects
Abstract:
... Following publication of the original article [1], the author reported a processing error in Figure 5. This has been corrected in the original article. ...
DOI:
10.1186/s12870-019-1966-9
PubMed:
31451107
PubMed Central:
PMC6710860

9. Variation in recovery of Salmonella strains extracted from leafy greens

Author:
Erickson, Marilyn C.; Liao, Jye-Yin
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2019 v.107 pp. 185-190
ISSN:
0023-6438
Subject:
lettuce,   etc   ; Salmonella; cabbage; enrichment culture; pathogens; spinach;     Show all 6 Subjects
Abstract:
... This study investigated the degree of extraction from leafy green tissue (green leafy lettuce, spinach, red cabbage) artificially inoculated with five individual strains of Salmonella at 3–4 log CFU. Inclusion of salt at levels of 0.50 M–0.75 M in the extraction solution improved recovery of S. Enteritidis Benson (P < 0.05) but salt in the range of 0.09–0.75 M had no effect on S. Enteritidis ME18, ...
DOI:
10.1016/j.lwt.2019.02.078
CHORUS:
10.1016/j.lwt.2019.02.078

10. First Report of Lettuce Big-Vein Disease Associated with Mirafiori Lettuce Big-Vein Virus and Lettuce Big-Vein Associated Virus in Colombia

Author:
Hernandez, A. K.; Torres, D. M.; Beltrán-Acosta, C. R.; Kobayashi, S.
Source:
Plant disease 2020 v.104 no.3 pp. 1000
ISSN:
0191-2917
Subject:
Lettuce big-vein associated virus; lettuce,   etc   ; DNA fragmentation; Lactuca sativa; Olpidium; Ophiovirus; amino acids; coat proteins; crop production; genes; growers; leaves; mixed infection; oligodeoxyribonucleotides; reverse transcriptase polymerase chain reaction; seedlings; soil; soil-borne diseases; spores; viral load; viruses; Colombia;     Show all 22 Subjects
Abstract:
... Since January 2015, lettuce big-vein disease (LBVD), a soil-borne disease vectored by Olpidium virulentus (Sasaya and Koganezawa 2006), was observed on lettuce fields in the Central region of Colombia, with a prevalence of 30 to 40%, estimated from 96 lettuce fields. Infected plants exhibited vein clearing, big vein, ruffling of the edge of outer leaves, and small or no head. Mirafiori lettuce big ...
DOI:
10.1094/PDIS-07-19-1471-PDN

11. Effect of nitrogen limitation on antioxidant qualities is highly associated with genotypes of lettuce (Lactuca sativa L.)

Author:
ZHOU, Weiwei; LV, Ting; HU, Yan; LIU, Wenjing; BI, Qingfang; JIN, Chongwei; LU, Lingli; LIN, Xianyong
Source:
Pedosphere 2020 v.30 no.3 pp. 414-425
ISSN:
1002-0160
Subject:
lettuce,   etc   ; Lactuca sativa; antioxidant activity; antioxidants; ascorbic acid; biomass; carotenoids; environmental factors; genotype; glutathione; human health; leaves; nitrogen; phenolic compounds;     Show all 14 Subjects
Abstract:
... Antioxidants are highly beneficial to human health, and their accumulation in lettuce, one of the most popular leafy vegetables, depends on both genetic and environmental factors. Nitrogen (N) availability plays an essential role in regulating antioxidant accumulation, but the influence of genotype × N interactions on the antioxidant qualities of lettuce is poorly understood. Therefore, the presen ...
DOI:
10.1016/S1002-0160(19)60833-7

12. Foliar versus root exposure of AgNPs to lettuce: Phytotoxicity, antioxidant responses and internal translocation

Author:
Wu, Juan; Wang, Guiyin; Vijver, Martina G.; Bosker, Thijs; Peijnenburg, Willie J.G.M.
Source:
Environmental pollution 2020 v.261 pp. 114117
ISSN:
0269-7491
Subject:
lettuce,   etc   ; Lactuca sativa; antioxidant activity; exposure pathways; food safety; humans; ions; nanoparticles; nanosilver; nutrient transport; phytotoxicity; plant tissues; risk; silver;     Show all 14 Subjects
Abstract:
... Whether toxicity of silver nanoparticles (AgNPs) to organisms originates from the nanoparticles themselves or from the dissolved Ag-ions is still debated, with the majority of studies claiming that extracellular release of Ag-ions is the main cause of toxicity. The objective of this study was to determine the contributions of both particles and dissolved ions to toxic responses, and to better unde ...
DOI:
10.1016/j.envpol.2020.114117

13. Inactivation of Salmonella enterica on post-harvest cantaloupe and lettuce by a lytic bacteriophage cocktail

Author:
Wong, Catherine W.Y.; Delaquis, Pascal; Goodridge, Lawrence; Lévesque, Roger C.; Fong, Karen; Wang, Siyun
Source:
Current research in food science 2020 v.2 pp. 25-32
ISSN:
2665-9271
Subject:
romaine lettuce,   etc   ; Lactuca sativa; Salmonella enterica; bacteriophages; cantaloupes; etiological agents; foodborne illness; fresh produce; leaves; sanitizers; serotypes; tissues; water activity;     Show all 13 Subjects
Abstract:
... Salmonella enterica (S. enterica) is a causative agent of multiple outbreaks of foodborne illness associated with fresh produce, including pre-cut melon and leafy vegetables. Current industrial antimicrobial interventions have been shown to reduce microbial populations by <90%. Consequently, bacteriophages have been suggested as an alternative to chemical sanitizers. Seven S. enterica strains from ...
DOI:
10.1016/j.crfs.2019.11.004

14. Small scale Plant Factories with Artificial Lighting and wind energy microgeneration: A multiple revenue stream approach

Author:
Xydis, George A.; Liaros, Stelios; Avgoustaki, Dafni-Despoina
Source:
Journal of cleaner production 2020 v.255 pp. 120227
ISSN:
0959-6526
Subject:
lettuce,   etc   ; automation; basil; cities; cost effectiveness; energy; factories; food availability; hydroponics; income; lighting; tomatoes; wind power; wind turbines;     Show all 14 Subjects
Abstract:
... New, more innovative, better-focused and cost effective ways need to be developed in order to ascertain the sustainability of the global food system. This work introduced the research problem as if small scale urban Plant Factories with Automated Lighting (ssPFAL) are a viable investment option in order to promote food supply security in the ever expanding distributed energy generation environment ...
DOI:
10.1016/j.jclepro.2020.120227

15. Design and evaluation of a solar-based trigeneration system for a nearly zero energy greenhouse in arid region

Author:
Mohsenipour, Mahmoud; Ebadollahi, Mohammad; Rostamzadeh, Hadi; Amidpour, Majid
Source:
Journal of cleaner production 2020 v.254 pp. 119990
ISSN:
0959-6526
Subject:
lettuce,   etc   ; arid zones; cold season; cost analysis; electricity generation; equations; fuels; greenhouses; solar energy; tomatoes; traditional farming; water conservation; Iran;     Show all 13 Subjects
Abstract:
... Greenhouses driven by renewable sources such as solar energy can be a reliable alternative to the traditional farming approaches, especially for geographically restricted locations. In light of such requirement, a solar-based greenhouse using a high efficient combined cooling, heating and power system is dynamically simulated for the Yazd city in Iran to cultivate lettuce and tomato, using Enginee ...
DOI:
10.1016/j.jclepro.2020.119990

16. In vitro gastrointestinal digestion of crisphead lettuce: Changes in bioactive compounds and antioxidant potential

Author:
Ketnawa, Sunantha; Suwannachot, Jutalak; Ogawa, Yukiharu
Source:
Food chemistry 2020 v.311 pp. 125885
ISSN:
0308-8146
Subject:
lettuce,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; Lactuca sativa; antioxidant activity; bioactive compounds; bioavailability; flavonoids; in vitro digestion; intestines; sulfonic acids;     Show all 10 Subjects
Abstract:
... In this study, the potential health benefits of crisphead lettuce (Lactuca sativa L.) before and after digestion were represented by the recovery, bioaccessibility, and change of bioactive compounds including total phenolic (TPC) and total flavonoids content (TFC), and bioactivities [in vitro antioxidant activities including 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2, 2′-azinobis-(3-ethylbenzothiazol ...
DOI:
10.1016/j.foodchem.2019.125885

17. Biofilm formation of Listeria monocytogenes in hydroponic and soil grown lettuce leaf extracts on stainless steel coupons

Author:
Kyere, Emmanuel O.; Foong, Grace; Palmer, Jon; Wargent, Jason J.; Fletcher, Graham C.; Flint, Steve
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2020 v.126 pp. 109114
ISSN:
0023-6438
Subject:
lettuce,   etc   ; Lactuca sativa; Listeria monocytogenes; animal pathogenic bacteria; biofilm; cabbage; fresh produce; hydroponics; leaf extracts; leaves; soil; stainless steel;     Show all 12 Subjects
Abstract:
... Foodborne outbreaks associated with fresh produce due to human pathogenic bacteria have become a global concern. In this study, we investigated the ability of three fresh produce associated L. monocytogenes strains: PFR O8A06 (coleslaw isolate), PFR O8A07 and O8A08 (cabbage isolates) to survive and form biofilms on stainless steel coupons in extracts of lettuce leaves obtained from soil and hydrop ...
DOI:
10.1016/j.lwt.2020.109114

18. Cold plasma enhances the efficacy of aerosolized hydrogen peroxide in reducing populations of Salmonella Typhimurium and Listeria innocua on grape tomatoes, apples, cantaloupe and romaine lettuce

Author:
Song, Yuanyuan; Fan, Xuetong
Source:
Food microbiology 2020 v.87 pp. 103391
ISSN:
0740-0020
Subject:
romaine lettuce,   etc   ; Listeria innocua; Salmonella Typhimurium; Solanum lycopersicum; apples; bacteria; cantaloupes; cold; fresh produce; grape tomatoes; hydrogen peroxide; leaves; mists;     Show all 13 Subjects
Abstract:
... In the present study, we investigated whether cold plasma activation affected the efficacy of aerosolized hydrogen peroxide against S. Typhimurium and L. innocua. Stem scars and smooth surfaces of grape tomatoes, surfaces of Granny Smith apples and Romaine lettuce (both midrib and upper leaves) and cantaloupe rinds were inoculated with two-strain cocktails of S. Typhimurium and 3-strain cocktails ...
DOI:
10.1016/j.fm.2019.103391

19. Prevalence of contamination by intestinal parasites in vegetables (Lactuca sativa L. and Coriandrum sativum L.) sold in markets in Belém, northern Brazil

Author:
Rodrigues, Alessandro Cardoso; da Silva, Melanie Dayane Castro; Pereira, Regina Ângela Seixas; Pinto, Laine Celestino
Source:
Journal of the science of food and agriculture 2020 v.100 no.7 pp. 2859-2865
ISSN:
0022-5142
Subject:
lettuce,   etc   ; Blastocystis hominis; Coriandrum sativum; Lactuca sativa; Protozoa; Trichuris trichiura; hookworms; humans; intestines; monitoring; public health; supermarkets; Brazil;     Show all 13 Subjects
Abstract:
... BACKGROUND: Previous studies have recorded a high prevalence of intestinal parasites in lettuce (Lactuca sativa L.) and coriander (Coriandrum sativum L.) destined for human consumption. This study determined the prevalence of contamination by intestinal parasites in these two plants sold in two street markets and two supermarkets in the city of Belém, northern Brazil. RESULTS: A total of 200 plant ...
DOI:
10.1002/jsfa.10265

20. Effects of Zn in sludge-derived biochar on Cd immobilization and biological uptake by lettuce

Author:
Gao, Jia; Zhao, Tuokun; Tsang, Daniel C.W.; Zhao, Nan; Wei, Hang; Feng, Mingyu; Liu, Kunyuan; Zhang, Weihua; Qiu, Rongliang
Source:
The Science of the total environment 2020 v.714 pp. 136721
ISSN:
0048-9697
Subject:
lettuce,   etc   ; biochar; biomass; cadmium; catalase; hydroponics; leaves; malondialdehyde; peroxidase; pyrolysis; sewage sludge; soil amendments; sorption; surface area; zinc; zinc oxide;     Show all 16 Subjects
Abstract:
... Considering the high Zn content of municipal sewage sludge and its competition with Cd during plant uptake due to their similar properties, the presence of Zn in sludge-derived biochar (SDBC) may affect Cd immobilization and uptake by plants. To confirm this, SDBC samples with different Zn contents were prepared and characterized. Their Cd immobilization behavior was studied by conducting batch so ...
DOI:
10.1016/j.scitotenv.2020.136721