Generic and Shiga toxin-producing Escherichia coli (O157:H7) contamination of lettuce and radish microgreens grown in peat moss and perlite

Işık, Hasan; Topalcengiz, Zeynal; Guner, Senem; Aksoy, Aziz

doi:10.1016/j.foodcont.2019.107079

Cited by 21 publications

(20 citation statements)

References 23 publications

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“…Indeed, harvesting by cutting may increase susceptibility to contamination, since the cut site may be a breach from where pathogens can enter the system [130], as already reported in lettuce [143]. Screening for pathogens in sprouting seedbeds should also be performed [129], since soil and soil substitutes could provide a direct nutrient source as well as a protective surface from mechanical damage, thus promoting their proliferation or survival [144][145][146]. In this regard, Işık et al [144] have studied the possible transfer of non-pathogenic and pathogenic E. coli from contaminated growth media to the edible part of radish and lettuce microgreens.…”

Section: Microbiological Safety Of Sprouts and Microgreensmentioning

confidence: 99%

“…Screening for pathogens in sprouting seedbeds should also be performed [129], since soil and soil substitutes could provide a direct nutrient source as well as a protective surface from mechanical damage, thus promoting their proliferation or survival [144][145][146]. In this regard, Işık et al [144] have studied the possible transfer of non-pathogenic and pathogenic E. coli from contaminated growth media to the edible part of radish and lettuce microgreens. Moreover, hydroponic systems, which are preferably chosen by modern commercial facilities, are not safer than other growing systems [142].…”

Section: Microbiological Safety Of Sprouts and Microgreensmentioning

confidence: 99%

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Sprouts and Microgreens: Trends, Opportunities, and Horizons for Novel Research

et al. 2020

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Sprouts and microgreens have attracted tremendous interest across multiple disciplines in recent years. Here, we critically review the most recent advances to underscore research prospects and niches, and related challenges, not yet addressed or fully pursued. In particular, we report a number of themes that merit special attention as a result of their relevance to plant science, nutrition, health, and zootechnics: (1) species not yet or inadequately investigated, such as wild plants, and fruit tree strains; (2) abiotic and biotic factors, and biostimulants, for elicitation strategies and metabolic engineering; (3) sanitization and processing technologies to obtain high-quality products; (4) digestive fate and impact of bioactive elements, antinutrients, and allergens on human nutrition; (5) experimental challenges to researching health benefits; (6) the opportunity to generate natural product libraries for drug discovery; and (7) sprouts in animal feeding to improve both animal health and the nutritional value of animal products for the human diet. The convergence of different themes involving interdisciplinary competencies advocate fascinating research pursuits, for example, the elicitation of metabolic variants to generate natural product collections for identification and selection of bioactive chemicals with a role as nutraceuticals, key constituents of functional foods, or interactive partners of specific drugs.

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Section: Microbiological Safety Of Sprouts and Microgreensmentioning

confidence: 99%

Section: Microbiological Safety Of Sprouts and Microgreensmentioning

confidence: 99%

Sprouts and Microgreens: Trends, Opportunities, and Horizons for Novel Research

et al. 2020

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“…Previous microgreen food safety studies comparing the risks of overhead versus subsurface irrigation are limited, although it has been studied in other leafy greens (45). Neither of the previous studies that investigated watering technique in microgreens production (28,68) found statistically significant differences in the transfer of Escherichia coli O157:H7 to microgreens between the two watering methods. However, a difference in E. coli O157:H7 transfer to full-sized lettuce was found by Solomon et al (47).…”

Section: Resultsmentioning

confidence: 99%

Characterization of Microgreen Growing Operations and Associated Food Safety Practices

Misra¹,

Gibson²

2021

FPT

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Microgreen growing operations are an emerging industry. This study represents the first national survey of microgreen growers in the United States. An online survey, answered by 176 growers, included questions about farm demographics, growing techniques, microgreen varieties grown, and food safety practices. Microgreen growing operations that earned <10,000 USD/year in microgreen revenue (62%) producing microgreens in trays on stacked, artificially lit shelves (40.3%) dominated the response pool.Most farms surveyed opened after 2010 (75%). These farms primarily grow microgreens using peat (17.6%), coco coir (14.2%), or soil (15.3%). Sunflower (28%), peas (27%), and radish (29%) were the most popular microgreen varieties produced. Chi-square tests of association were performed to identify relationships between farm characteristics and food safety practices. Statistically significant relationships were found between growing media testing at least once per year and total number of employees (P = 0.015) and total number of employees who directly handle microgreens (P = 0.001), possibly indicating that larger operations are better equipped to engage in routine quality assurance procedures. Production system type (P = 0.001) and total number of employees (P = 0.011) were associated with pregermination seed disinfection; however, in this instance, smaller operations (i.e., average of four employees) reported seed disinfection more frequently than larger operations. Routine documentation practices were also significantly associated with annual microgreen revenue (P = 0.003), passing a good agricultural practices (GAP) audit (P = 0.001), and number of previous food safety trainings attended (P = 0.001). Overall, this study aims to inform research, outreach, and training efforts on the growing systems, microgreen varieties, and production practices relevant to microgreen safety.

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“…Os surtos alimentares relacionados aos brotos foram, em sua maioria, causados por Salmonella spp., Escherichia coli O157: H7 e Listeria monocytogenes, entre outros (Baenas et al, 2017). Esses mesmos patógenos podem se apresentar em microverdes desde seu cultivo até comercialização, por ser consumido da mesma forma que os brotos, geralmente cru, e possuir o mesmo crescimento rápido (Işık et al, 2020;Reed et al, 2018). A Salmonella spp.…”

Section: Problemas Fitossanitáriosunclassified

Importância das condições de armazenamento de microgreens: Análise bibliométrica e revisão de literatura

Bezerra

Silva

Loss

et al. 2022

RSD

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Microverdes são vegetais jovens que consistem basicamente de três partes: um caule central, folhas cotilédones e um par de folhas verdadeiras. Podem ser cultivados de modo orgânico e colhidos entre 1-2 semanas após a semeadura. Os microverdes concentram 40 vezes mais nutrientes que vegetais maduros, apresentando maior quantidade de nutrientes e micronutrientes. Porém, os microverdes enfrentam variados problemas de conservação e durabilidade devido ao seu difícil armazenamento, por possuir folhas frágeis, com facilidade de murcha e senescência precoce. Por isso, precisam de embalagens que facilitem sua respiração e mantenha sua qualidade visual, já que seu consumo muitas vezes é regido por sua aparência. Nesse contexto, o presente trabalho objetivou realizar uma análise bibliométrica e revisão de literatura acerca da importância do armazenamento de microgreens, trazendo estudos recentes com técnicas que tem sido estudadas e tem mostrado resultados promissores. Verificou-se que o uso de soluções cloradas e ácidos orgânicos tem grande potencial para aumentar a vida de prateleira dos microverdes, além disso, a maioria dos estudos utilizou embalagem de filmes OTR (taxa de transmissão de oxigênio), ou polietileno/embalagens a vácuo, com temperaturas de refrigeração variando de 1 a 10 ºC, onde a temperatura de 5 ºC mostrou-se ser a mais ideal para aumentar a vida de prateleira da maioria dos microgreens.

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Generic and Shiga toxin-producing Escherichia coli (O157:H7) contamination of lettuce and radish microgreens grown in peat moss and perlite

Cited by 21 publications

References 23 publications

Sprouts and Microgreens: Trends, Opportunities, and Horizons for Novel Research

Sprouts and Microgreens: Trends, Opportunities, and Horizons for Novel Research

Characterization of Microgreen Growing Operations and Associated Food Safety Practices

Importância das condições de armazenamento de microgreens: Análise bibliométrica e revisão de literatura

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