scholarly journals The Effect of Microwave Irradiation on the Representation and Growth of Moulds in Nuts and Almonds

Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 221
Author(s):  
Eva Popelářová ◽  
Eva Vlková ◽  
Roman Švejstil ◽  
Lenka Kouřimská
Keyword(s):  
Microwave Irradiation ◽  
Microbiological Quality ◽  
Promising Method ◽  
Alternative Method ◽  
Mw Irradiation ◽  
Non Destructive ◽  
Different Doses

Microwave (MW) irradiation is a non-destructive method that can be applied as an alternative method to inhibit the growth of microorganisms. The present study evaluated the effect of MW irradiation on the occurrence of moulds in nuts and almonds. Samples of unshelled natural almonds, pistachios, and in-shell peanuts were treated with different doses of MW irradiation (2400–4000 W). The effect of MW irradiation on mould counts was evaluated by cultivating immediately after irradiation and after 3 and 6 months of storage. The most represented genera in all analysed samples were Aspergillus (68%), Penicillium (21%), and a small amount of Cladosporium (3%). Mould numbers significantly decreased after MW treatment. The treatments with MW irradiations at 3000 and 4000 W significantly reduced the mould colony counts, and their effect persisted during storage; irradiation at 2400 W was partially effective. The strongest effect of MW irradiation was observed in in-shell peanuts. MW irradiation seems to be a promising method for maintaining the microbiological quality of nuts.

scholarly journals Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

2013 ◽  
Vol 33 (2) ◽  
pp. 316-322 ◽  
Author(s):  
Isabela Costa Guimarães ◽  
Evandro Galvão Tavares Menezes ◽  
Priscilla Silva de Abreu ◽  
Ariel Costa Rodrigues ◽  
Paulo Rogério Siriano Borges ◽  
...  
Keyword(s):  
Gamma Irradiation ◽  
Microbiological Quality ◽  
Rubus Idaeus ◽  
Different Doses

scholarly journals Physicochemical, microbiological and bioactive evaluations of ‘Araçá-Boi’ (Eugenia stipitata Mc Vaugh) pulp exposed to Gamma Irradiation

2020 ◽  
Vol 9 (8) ◽  
pp. e131985453
Author(s):  
Romário Oliveira de Andrade ◽  
Gustavo Santos de Lima ◽  
Saul Ramos de Oliveira ◽  
Ana Raquel Carmo de Lima ◽  
Auryclennedy Calou de Araújo ◽  
...  
Keyword(s):  
Vitamin C ◽  
Gamma Irradiation ◽  
Water Activity ◽  
Physicochemical Parameters ◽  
Microbiological Quality ◽  
Agricultural Practices ◽  
The Other ◽  
Brazilian Legislation ◽  
Different Doses

The aim of this research was to evaluate the physicochemical, microbiological and bioactive quality of ‘Araçá-Boi’ pulps exposed to Gamma Irradiation. Manual harvesting was done in the morning, using good agricultural practices, and fruits were packed in thermal boxes and transported to the ‘Laboratório de Armazenamento e Processamento de Produtos Agrícolas’ of the ‘Universidade Federal de Campina Grande’, to obtain the pulp. The ‘Araçá-Boi’ pulp was irradiated in the ‘Laboratório de Irradiação Gama do Centro de Desenvolvimento de Tecnologia Nuclear’ (CDTN), located at UFPE - Recife, PE, where three doses of Gamma Irradiation (2, 3, 4 kGy) were applied for later comparison with the non-irradiated sample (control). After irradiation, the microbiological, physicochemical parameters and the quantification of vitamin C and flavonoids were evaluated it can be observed that dose 6 is grouped in a set with differential characteristics of the other treatments, as it provided higher AA, pH, luminosity and water activity (Aw). It was observed that there was no microorganism development after irradiation in all analyzed treatments. It can be concluded that the different doses of Gamma Irradiation guaranteed the microbiological quality of the ‘Araçá-Boi’ pulp, remaining fit for consumption and in compliance with the Brazilian legislation.

scholarly journals Rapid Microbiological Assessment in Raw Milk: Validation of a Rapid Alternative Method for the Assessment of Microbiological Quality in Raw Milk

Foods ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1186
Author(s):  
Nicla Marri ◽  
Francesca Losito ◽  
Loris Le Boffe ◽  
Gilberto Giangolini ◽  
Simonetta Amatiste ◽  
...  
Keyword(s):  
Microbiological Quality ◽  
Bacterial Count ◽  
Raw Milk ◽  
Plate Count ◽  
Microbiological Analysis ◽  
Biological Survey ◽  
Alternative Method ◽  
Colony Forming Units ◽  
Plate Count Method

The consumption of dairy products and the dairy industry are one of the main global agri-food sectors for its size, economic importance, and level of technology. Microbiological quality of pasteurized milk or other milk products is dependent on microbiological quality of raw milk. A variety of microbiological count methods is available for monitoring the hygienic quality of raw milk. Among them, the pour plate method is the official essay for counting the number of colony-forming units in milk samples according to International Organization for Standardization (ISO) No. 4833-1:2013. The aim of the present study is the validation of the Micro Biological Survey (MBS) method, against the reference plate-count method, for the assessment of the microbiological quality of raw milk. This comparative study, performed in collaboration with the Istituto Zooprofilattico Sperimentale del Lazio e della Toscana M. Aleandri (IZSLT), demonstrates the accuracy of this alternative method for the determination of total viable bacterial count in cow’s raw milk. The results obtained with the MBS method highlight its potential as a valid tool for reliable microbiological analysis in dairy industries.

scholarly journals Rapid Microbiological Assessment in Raw Milk. Validation of a Rapid Alternative Method for the Assessment of Microbiological Quality in Raw Milk.

2020 ◽  
Author(s):  
Nicla Marri ◽  
Francesca Losito ◽  
Loris Le Boffe ◽  
Gilberto Giangolini ◽  
Simonetta Amatiste ◽  
...  
Keyword(s):  
Microbiological Quality ◽  
Bacterial Count ◽  
Raw Milk ◽  
Plate Count ◽  
Microbiological Analysis ◽  
Biological Survey ◽  
Alternative Method ◽  
Colony Forming Units ◽  
Plate Count Method

The consumption of dairy products and the dairy industry is one of the main global agro-food sectors for size, economic importance and level of technology. Microbiological quality of pasteurized milk or other milk products is dependent on microbiological quality of raw milk. A variety of microbiological count methods is available for monitoring the hygienic quality of raw milk. Among them, the pour plate method is the official essay for counting the number of colony forming units in milk samples according to ISO 4833-1:2013. The aim of the present study is the validation of the Micro Biological Survey (MBS) method, against the reference plate count method, for the assessment of the microbiological quality of raw milk. This comparative study, performed in collaboration with the “Istituto Zooprofilattico Sperimentale del Lazio e della Toscana M. Aleandri” (IZSLT), demonstrates the accuracy of this alternative method for the determination of total viable bacterial count in cow’s raw milk. The results obtained with the MBS method highlighting its potential as a valid tool for reliable microbiological analysis in dairy industries.

Microbiological quality of ready to hang enteral formulas

2005 ◽  
Vol 30 (03) ◽  
Author(s):  
J Kehr ◽  
B Morales ◽  
P Contreras ◽  
L Castillo ◽  
W Aranda
Keyword(s):  
Microbiological Quality ◽  
Enteral Formulas

Productivity and quality of soybean seeds with different fertilization on podzolized chernozem

2020 ◽  
Vol 1 (97) ◽  
pp. 136-144
Author(s):  
H.M. Hospodarenko ◽  
◽  
I.V. Prokopchuk ◽  
K. P. Leonova ◽  
V.P. Boyko
Keyword(s):  
Crop Rotation ◽  
Crop Yields ◽  
Spring Barley ◽  
Mineral Fertilizer ◽  
Nitrogen Fertilizers ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Soybean Seeds ◽  
Different Doses

The productivity of agricultural crops is the most variable and integral indicator of their vital activity, which accumulates their genetic potential, soil fertility, weather conditions and components of agricultural technology. Soybean under optimal growing conditions (the reaction of the soil is close to neutral, sufficient phosphorus and potassium nutrition, the use of nitraginization) assimilates from the air about 70 % of the total nitrogen requirement. Therefore, it is believed that it is enough to apply only a starting dose of nitrogen fertilizers (20–40 kg/ha a. s.), to get a high yield with good indicators of grain quality. The results of studies of the influence of long-term (8 years) application of different doses and ratios of fertilizers in field crop rotation on podzolized chernozem in the conditions of the Right -Bank Forest-Steppe of Ukraine on the yield and quality of soybean seeds preceded by spring barley were presented. It was found that crop yields could be increased by 18–77 % owing to different doses, ratios and types of fertilizers. The highest indicators of seed yields for three years of the research (3,02 t/ha) were obtained under the application of mineral fertilizers at a dose of N110P60K80 per 1 ha of crop rotation area, including under soybean – N60P60K60. Exclusion of the nitrogen component from the complete fertilizer (N60P60K60) reduced its yield by 26 %, phosphorus – by 17, and potassium by 11 %. There was no significant decrease in soybean yield in the variant of the experiment with a decrease in the proportion of potassium in the composition of complete mineral fertilizer (N60P60K30) for three years of study. The largest mass of 1000 soybean seeds was formed at doses of N60К60 fertilizers, and their protein content — under the application of complete mineral fertilizer in doses of N60P60K60 and N60P60K30.

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