Mortality of insects and quality of maize grains in hermetic and non-hermetic storage

ABSTRACT Due to the need to improve the quality and safety of foods, chemical methods used to control grain pests have been replaced by alternative methods. For example, modified atmosphere within the storage units has been used. Therefore, the objective was to evaluate maize grain quality and mortality of insects of the species Sitophilus zeamais and Tribolium castaneum in hermetic and non-hermetic environments for 50 days of storage. The hermetic units consisted of polyethylene "bags" with capacity for 60 kg. A cage with 20 adults of each species and 200 g of maize was placed inside each unit. The oxygen level was quantified every five days. Evaluations of insect mortality and survival occurred at 10, 20, 30, 40 and 50 days of storage. At 0, 30 and 50 days, density, moisture and fungal incidence analyses were conducted. The airtight system is efficient in the control of insects, with satisfactory mortality values for both species. Insects favor the development of fungi during the storage, regardless of the storage system.

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Quality of Canned Celery Produced from Sliced Celery Stored Under Modified Atmospheres

Journal of Food Protection ◽

10.4315/0362-028x-43.12.924 ◽

1980 ◽

Vol 43 (12) ◽

pp. 924-928

Author(s):

C. E. JOHNSON ◽

R. C. LINDSAY ◽

J. B. WESSON

Keyword(s):

Low Density Polyethylene ◽

Modified Atmosphere ◽

Low Density ◽

Sensory Panel ◽

Green Color ◽

Modified Atmospheres ◽

Co2 Levels ◽

Polyethylene Bags ◽

Pale Green

Canned celery that was acceptable to a laboratory sensory panel was produced from fresh, sliced celery which had been held up to 3 weeks at 4 C under modified atmospheres in closed polyethylene bags. Sliced celery held in air at 4 C became unacceptable within 1 week. Celery packaged in 0.7-mil high density/4.4-mil low density coextruded polyethylene developed the highest CO2 levels (25%) of samples prepared, and became progressively dark olive-green colored. Similar darkening was not observed for celery in 3-mil low density polyethylene packages. Modified-atmosphere packaged celery became more firm than fresh celery during storage. Sliced celery dipped in sodium bisulfite solutions was a lighter, pale-green color than untreated celery. Celery tissue and microbial respiratory action rapidly modified atmospheres in closed bags to give ca. 2% O2 and 12% CO2 in 2 days, and ca. 1.5% O2 and 17–25% CO2 after 16 days.

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Adaptation of technological packaging for conservation of soybean seeds in storage units as an alternative to modified atmospheres

PLoS ONE ◽

10.1371/journal.pone.0241787 ◽

2020 ◽

Vol 15 (11) ◽

pp. e0241787

Author(s):

Paulo Carteri Coradi ◽

Claudir Lari Padia ◽

Lanes Beatriz Acosta Jaques ◽

Guilherme Abreu Coelho de Souza ◽

Roney Eloy Lima ◽

...

Keyword(s):

Seed Quality ◽

Initial Conditions ◽

Storage Period ◽

Ambient Air ◽

Storage Conditions ◽

Modified Atmosphere ◽

Soybean Seeds ◽

Physiological Quality ◽

Storage Units

This study aimed to evaluate the quality of seeds of RR and RR2 PRO soybean cultivars stored in ambient air with raffia packaging (ANER), ambient air with laminated packaging (ANEL), modified atmosphere with polyethylene packaging (AMEP), refrigerated atmosphere (1 to 3°C) with raffia packaging (ARER), refrigerated atmosphere (1 to 3°C) with laminated packaging (AREL), and modified (-14 PSI) and refrigerated (1 to 3°C) atmosphere with polyethylene packaging (AMREP), over 6 months of storage. Results showed that the seeds of cultivar RR2 were preserved with better physiological quality. Raffia and polyethylene packaging under natural storage conditions, in a refrigerated and modified atmosphere, did not preserve the seed quality over the storage period. The conditions of storage in ambient air with laminated packaging (ANEL) and in a refrigerated atmosphere with laminated packaging (AREL) reduced the environmental effects of temperature and relative humidity, leading to better results of physiological quality of the seeds. Storage time negatively influenced the physiological quality of seeds, except for AREL and ANEL, which maintained the quality close to that of the initial conditions, over the 6 months of storage. The best alternatives for soybean seeds storage over 6 months are the laminated packaging in a natural environment, matching the refrigerated conditions. The technological laminated packaging can be used as a new alternative for conserving soybean seeds in processing and storage units.

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Evaluation of Drying Performance, Energy Consumption, and Quality of Two-Stage Dried Maize Grain

Journal of Biosystems Engineering ◽

10.1007/s42853-021-00095-w ◽

2021 ◽

Author(s):

Md. Akhtaruzzaman ◽

Md. Hasan Tarek Mondal ◽

Mrityunjoy Biswas ◽

Md. Abdul Momin Sheikh ◽

Anwara Akter Khatun ◽

...

Keyword(s):

Energy Consumption ◽

Two Stage ◽

Maize Grain

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Physical Characteristics and Microbial Quality of Ostrich Meat in Relation to the Type of Packaging and Refrigerator Storage Time

Molecules ◽

10.3390/molecules26113445 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3445

Author(s):

Olaf K. Horbańczuk ◽

Artur Jóźwik ◽

Jarosław Wyrwisz ◽

Joanna Marchewka ◽

Agnieszka Wierzbicka

Keyword(s):

Storage Time ◽

Modified Atmosphere Packaging ◽

Physical Characteristics ◽

Modified Atmosphere ◽

Packaging System ◽

Initial Ph ◽

Viable Bacteria ◽

L Value ◽

Meat Samples

The aim of this study was to evaluate the effect of the packaging system type on the physical characteristics and microbial changes in ostrich meat during refrigerated storage. The applied packaging systems were vacuum packaging (VP) and modified atmosphere packaging (MAP) using two combinations of gases: MAP1 (40% O2/40% CO2/20% N2) and MAP2 (60% O2/30% CO2/10% N2). Eight meat samples were obtained in three replicates for all parameters, except for pH, for which six replicates were obtained from the M. ilifibularis (IF) muscle, and were stored in a refrigerator at 2 °C and analyzed at 0, 4, 8, 12 and 16 days for the effect of packaging methods on physical meat quality. The initial pH (5.99) decreased at the end of the storage time for MAP1 to 5.81, whereas VP was stable from day 0 to 12 and increased up to 6.08 on day 16. Regarding meat color, the L* value increased during storage for MAP1 and MAP2 from 36.99 to 40.75 and 41.60, respectively, whereas it declined for VP to 34.22. The same tendencies were reported for redness (a*) and yellowness (b*). Drip loss was the lowest in MAP1 and highest in VP. The lowest total viable bacteria counts were identified in VP, as compared to MAP1 and MAP2.

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Effect of oxygen scavenging films and modified atmosphere on the color quality of hot‐filled freestone peach puree

Journal of Food Process Engineering ◽

10.1111/jfpe.13681 ◽

2021 ◽

Author(s):

Steven Skrypec ◽

Hansol Doh ◽

William Scott Whiteside

Keyword(s):

Modified Atmosphere ◽

Oxygen Scavenging ◽

Color Quality ◽

Effect Of Oxygen

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Home Mechanical Ventilation: A Patient’s Perspective Survey Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18084048 ◽

2021 ◽

Vol 18 (8) ◽

pp. 4048

Author(s):

Magdalena Kwiatosz-Muc ◽

Bożena Kopacz

Keyword(s):

Health Care ◽

Mechanical Ventilation ◽

Alternative Methods ◽

Survey Study ◽

Home Mechanical Ventilation ◽

Patient’S Satisfaction ◽

Satisfaction Index ◽

Number Of Patients ◽

The Difference

Background: An increasing number of patients included in home mechanical ventilation (HMV) care has been under observation for many years. The study aimed to assess the patients opinion concerning the expected and perceived quality of care in an HMV system and a patient’s satisfaction with care. Methods: In 2017, patients treated with HMV were surveyed in Poland with the modified SERVQUAL questionnaire. Results: One hundred correctly completed surveys were analyzed. Patient Satisfaction Index was high. In every examined area, the expectations were statistically significant larger than the perception of the services. The biggest gap was in the tangibility dimension and the smallest gap was in the empathy dimension. Perceived respect and understanding for a patient’s needs are close to the expectations. Conclusions: The level of satisfaction with health care among patients treated with HMV in majority of investigated components is high. Moreover, the difference between perceived and expected quality of health care in the HMV system was relatively small in the opinion of the patients themselves. Further investigations with alternative methods are needed.

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High carbon-di-oxide modified atmospheric packaging on quality of ready-to-eat minimally processed fresh-cut iceberg lettuce

Food Science and Biotechnology ◽

10.1007/s10068-021-00881-4 ◽

2021 ◽

Author(s):

Md. Azizul Haque ◽

Md. Asaduzzaman ◽

Md. Sultan Mahomud ◽

Md. Rizvi Alam ◽

Alin Khaliduzzaman ◽

...

Keyword(s):

Modified Atmosphere Packaging ◽

Storage Condition ◽

Modified Atmosphere ◽

High Carbon ◽

Modified Atmospheric Packaging ◽

Iceberg Lettuce ◽

Microbial Development ◽

Fresh Cut ◽

Intact Surface

AbstractFresh-cut lettuce is a very well-known salad for today's routines because it obliges minimal preparation to minimize the loss of health beneficial vitamins, minerals, antioxidants and other phytochemicals. It is a prodigious challenge to serve its consumers fresh. Quality of freshly processed lettuce under high CO2 modified atmosphere packaging (MAP) has been investigated as a realistic alternative technique for its preservation. Storage under high CO2 atmospheric treatments exhibited a significant impact in microbial development, electrolyte leakage, volatile metabolites and sensory quality of fresh-cut iceberg lettuce. This storage condition (MAP 1: 5 kPa O2 and 20 kPa CO2 balanced by N2 at 7 °C for 6 days) inhibited the growth of mesophilic bacteria and yeasts; delayed the enzymatic browning (cut-edges and intact surface) of fresh-cut iceberg lettuce and overall visual quality was also in acceptance limit. The development of off-odors was perceived in high CO2 MAP as a consequence of volatiles (ethanol and acetaldehyde) accumulation which was persisted at an inexcusable level during 6 days of storage periods.

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UML Based Design Approach for Storage System of Nano-Satellite

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.599-601.530 ◽

2014 ◽

Vol 599-601 ◽

pp. 530-533

Author(s):

Hong Hao Wang ◽

Hui Quan Wang ◽

Zhong He Jin

Keyword(s):

Storage System ◽

Unified Modeling Language ◽

Object Oriented ◽

Modeling Language ◽

Nand Flash ◽

Unified Modeling ◽

Object Oriented Design ◽

High Level Modeling ◽

High Level

Due to the complex timing sequence of NAND flash, a unified design process is urgently required to guarantee the reliability of storage system of nano-satellite. Unified Modeling Language (UML) is a widely used high level modeling language for object-oriented design. This paper adopts the UML as the design and modelling tool in the low level storage system design to elaborate the UML application in each phase of design in detail. The result shows taking UML as the modelling tool results in a clear and unambiguity design, which promotes the reliability and quality of software. At last, the feasibility of object-oriented implementation in C is presented.

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