scholarly journals The Study of Microbiological Safety of Germinated Seeds of Broad Beans in the Process of their Production and Storage

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Gurbanov NH ◽  
Gurbanova RI ◽  
Gadimova NS ◽  
Akhundova NА ◽  
Mageramova MH
2021 ◽  
Vol 10 (9) ◽  
pp. e50110917893
Author(s):  
Amanda Domingas Ediodato de Sousa ◽  
Luciana Botezelli ◽  
Patrícia Neves Mendes

High-altitude fields have been subjected to an intense anthropization process. Due to this, studies on germination, seed storage and propagation of species that compose this plant formation become fundamental. Among such species is the Chresta sphaerocephala DC., Asteraceae. The purpose of this work was to study different temperatures for germination and storage of this species. Four germination temperatures (15°C, 20°C, 25°C and 30°C) and two storage temperatures (-5°C and +5°C) were tested. In order to assess seed vigor, the germination speed index (GSI) and average seed germination time were calculated. ANOVA and Tukey's test were performed at a 5% significance level. In addition, a morphological difference was observed in the analyzed Chresta sphaerocephala seeds, with these being classified as C1 (small seeds), C2 (long thin seeds), C3 (thicker seeds) and C4 (dark colored seeds). As for the storage temperature, 5°C was shown to be the best. When correlated with the germination temperature, 20°C resulted in a statistically higher number of germinated seeds.


Author(s):  
Caíke De Sousa Pereira ◽  
Victor Virginio de Sousa e Silva ◽  
Jardel Alves da Costa ◽  
Renato Santos Rocha ◽  
Wagner Rogério Leocádio Soares Pessoa ◽  
...  

A valorização de vegetais frescos, como o feijão-caupi imaturo, tem demonstrado um crescimento nos últimos anos, favorecendo o aumento gradativo na aquisição destes produtos   pelos consumidores. No   entanto, tais alimentos não são livres de micro-organismos, sendo necessários processos que priorizem a segurança microbiológica e o controle restrito da temperatura. Diante do exposto, objetivou-se com este trabalho avaliar a ação de diferentes tratamentos pós-colheita e tempo de armazenagem sobre os micro-organismos presentes em grãos imaturos de feijão-caupi da variedade sempre-verde. Sendo os tratamentos: T1 acondicionamento em embalagem (testemunha); T2 acondicionamento em embalagem + refrigeração; T3 condicionamento em embalagem + vácuo + refrigeração; T4 acondicionamento em embalagem + branqueamento + refrigeração; T5 acondicionamento em embalagem + branqueamento + vácuo + refrigeração. Realizaram-se    as análises microbiológicas aos 10, 20 e 40 dias de armazenamento, em que para cada época, quatro repetições foram aleatoriamente amostradas e avaliadas, por tratamento, e os resultados obtidos foram expressos sob a forma de tabela. Foram realizadas as observações da incidência de bactérias, e a identificação de fungos via microscópio óptico comum. Conforme os resultados. o pré-tratamento de branqueamento em T4 e T5 apresenta uma maior redução da diversidade de micro-organismos nos grãos imaturos de feijão-caupi após armazenagem, no entanto, não é capaz de eliminar completamente fungos produtores de micotoxinas e bactérias.   Palavras-chave: Feijão-Verde. Conservação Alimentar. Segurança Alimentar.   Abstract The appreciation of fresh vegetables, such as immature cowpea, has shown a growth in recent years, favoring the gradual increase in the purchase of these products by consumers. However, such food is not free of microorganisms, requiring processes that prioritize microbiological safety and restricted temperature control. Given the above, the objective of this work was to evaluate the action of different post-harvest treatments and storage time on microorganisms present in immature cowpea grains of the evergreen variety. The treatments: T1 packaging in packaging (control); T2 packaging in packaging + refrigeration; T3 packaging conditioning + vacuum + refrigeration; T4 packaging in packaging + bleaching + refrigeration; T5 packaging in packaging + bleaching + vacuum + refrigeration. Microbiological analyzes were performed at, 10, 20 and 40 days of storage, where for each season, four replications were randomly sampled and evaluated, per treatment, and the results obtained were expressed in the form of a table. Observations of  bacteria incidence were carried out, as well as the  fungi identification  using a standard optical microscope. According to the results, the  bleaching pretreatment in T4 and T5 presents a greater reduction in the diversity of microorganisms in immature cowpea grains after storage, however, it it is not able to completely eliminate mycotoxin-producing fungi and bacteria.   Keywords: Green Beans. Food Conservation. Food Security.


2016 ◽  
pp. 447-452
Author(s):  
M.A. Gatto ◽  
L. Sergio ◽  
M. Pieralice ◽  
V. Linsalata ◽  
L. Spremulli ◽  
...  

2009 ◽  
Vol 72 (4) ◽  
pp. 853-855 ◽  
Author(s):  
C. L. LITTLE ◽  
W. JEMMOTT ◽  
S. SURMAN-LEE ◽  
L. HUCKLESBY ◽  
E. de PINNA

There is little published information on the prevalence of Salmonella in edible nut kernels. A study in early 2008 of edible roasted nut kernels on retail sale in England was undertaken to assess the microbiological safety of this product. A total of 727 nut kernel samples of different varieties were examined. Overall, Salmonella and Escherichia coli were detected from 0.2 and 0.4% of edible roasted nut kernels. Of the nut varieties examined, Salmonella Havana was detected from 1 (4.0%) sample of pistachio nuts, indicating a risk to health. The United Kingdom Food Standards Agency was immediately informed, and full investigations were undertaken. Further examination established the contamination to be associated with the pistachio kernels and not the partly opened shells. Salmonella was not detected in other varieties tested (almonds, Brazils, cashews, hazelnuts, macadamia, peanuts, pecans, pine nuts, and walnuts). E. coli was found at low levels (range of 3.6 to 4/g) in walnuts (1.4%), almonds (1.2%), and Brazils (0.5%). The presence of Salmonella is unacceptable in edible nut kernels. Prevention of microbial contamination in these products lies in the application of good agricultural, manufacturing, and storage practices together with a hazard analysis and critical control points system that encompass all stages of production, processing, and distribution.


2020 ◽  
Vol 42 ◽  
Author(s):  
Willian Goudinho Viana ◽  
Ana Paula Lando ◽  
Rosa Angelica da Silva ◽  
Cláudia Dias da Costa ◽  
Pedro Henrique Mastriane Vieira ◽  
...  

Abstract: Garcinia gardneriana (Planch. & Triana) Zappi is a native species widely distributed in Brazil. It has ornamental features, edible fruits, and its leaves have medicinal properties; however, its potential has not been explored. The aim of this study was to evaluate seed physiological performance due to dormancy, desiccation and storage tolerance. Only decoated seeds germinated. Seeds had an initial water content of 1.07 g H2O.g-1 dw and final germination of 95%. Both desiccation to 0.67 g H2O.g-1 dw and storage at 25 ºC for ninety days resulted in decreased germination, 43 and 41%, respectively. Desiccation below 0.25 g H2O.g-1 dw and storage for ninety days at 5 ºC were lethal. A rapid decrease in enzymic protection by superoxide dismutase and ascorbate peroxidase was correlated to desiccation sensitivity. Total polyamines content was higher in fresh seeds and markedly decreased with desiccation. The decrease in enzyme activity and polyamines content seems to be associated with seed viability loss. In sum, G. gardneriana seeds have a low tolerance to desiccation and are sensitive to chilling. Therefore, the seeds can be categorized as recalcitrant and dormant, a rare combination in terms of seed biology.


Author(s):  
R. C. Gonzalez

Interest in digital image processing techniques dates back to the early 1920's, when digitized pictures of world news events were first transmitted by submarine cable between New York and London. Applications of digital image processing concepts, however, did not become widespread until the middle 1960's, when third-generation digital computers began to offer the speed and storage capabilities required for practical implementation of image processing algorithms. Since then, this area has experienced vigorous growth, having been a subject of interdisciplinary research in fields ranging from engineering and computer science to biology, chemistry, and medicine.


Author(s):  
John W. Roberts ◽  
E. R. Witkus

The isopod hepatopancreas, as exemplified by Oniscus ascellus. is comprised of four blind-ending diverticula. The regenerative cells at the tip of each diverticula differentiate into either club-shaped B-cells, which serve a secretory function, or into conoid S-cells, which serve in the absorption and storage of nutrients.The glandular B-cells begin producing secretory material with the development of rough endoplasmic reticulum during their process of maturation from the undifferentiated regenerative cells. Cytochemical and morphological data indicate that the hepatopancreas sequentially produces two types of secretory material within the large club-shaped cells. The production of the carbohydrate-like secretory product in immature cells seems to be phased out as the production of the osmiophilic secretion was phased in as the cell matured.


Author(s):  
J. M. Paque ◽  
R. Browning ◽  
P. L. King ◽  
P. Pianetta

Geological samples typically contain many minerals (phases) with multiple element compositions. A complete analytical description should give the number of phases present, the volume occupied by each phase in the bulk sample, the average and range of composition of each phase, and the bulk composition of the sample. A practical approach to providing such a complete description is from quantitative analysis of multi-elemental x-ray images.With the advances in recent years in the speed and storage capabilities of laboratory computers, large quantities of data can be efficiently manipulated. Commercial software and hardware presently available allow simultaneous collection of multiple x-ray images from a sample (up to 16 for the Kevex Delta system). Thus, high resolution x-ray images of the majority of the detectable elements in a sample can be collected. The use of statistical techniques, including principal component analysis (PCA), can provide insight into mineral phase composition and the distribution of minerals within a sample.


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