scholarly journals Influence of Packaging Type on the Dynamics of Powdered Eggs Chemical Composition

2017 ◽  
Vol 54 (2) ◽  
pp. 380-385
Author(s):  
Alexandru Usturoi ◽  
Cristina Simeanu ◽  
Marius Giorgi Usturoi ◽  
Marius Gheorghe Dolis ◽  
Roxana Nicoleta Ratu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
High Density Polyethylene ◽  
Dry Matter ◽  
Chemical Compounds ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Nitrogen Free Extract ◽  
Polyethylene Bags ◽  
Proximate Chemical Composition

The aim of the study was to investigate the dynamics of the main chemical compounds in the powdered eggs stored under constant environmental conditions (temperature=10�0.5oC; relative humidity=65�1%) and packaged in bags made of different plastic fabric (Lc group = high density polyethylene - HDPE; Lexp group = low density polyethylene - LDPE). The assessments were run to measure the inner water and dry matter contents, as well as the ash, proteins, lipids and nitrogen free extract levels. The analysis of data gathered throughout 90 days of storage suggested that the product packaged in low density polyethylene bags - LDPE (Lexp group) absorbed +0.82% humidity from the environment, compared to Lc group (highly significant differences), lost 0.41% from its initial proteins level and 0.59% of the nitrogen free extract, while lipids and ash values were not affected by the experimental factor (different package). Consequently, it might be concluded that the type and quality of the utilised package could significantly influence the proximate chemical composition, due to the transfers from the outer storage environment toward the inner volume of the package, whose intensity is given by the direct influence of the barrier features of the fabric the packages are made of.

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

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.

scholarly journals Proximate Composition of Thai and Cambodian Ready-to-Eat Insects

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
N. T. Grabowski ◽  
T. Chhay ◽  
S. Keo ◽  
R. Lertpatarakomol ◽  
J. Kajaysri ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Bombyx Mori ◽  
Proximate Composition ◽  
Dry Matter ◽  
High Fat ◽  
Nitrogen Free Extract ◽  
Nutrition Disorders ◽  
Lethocerus Indicus ◽  
Proximate Chemical Composition

Samples of ready-to-eat snacks based on Lethocerus indicus, Gymnogryllus vietnamensis, Tarbinskiellus portentosus, Teleogryllus mitratus, Bombyx mori, Omphisa fuscidentalis, and Cybister limbatus were purchased in Cambodia and Thailand, and their proximate chemical composition (including Na and Cl) was analysed. Comparing the results with the few existing references from the literature (based on unprocessed specimens), marked differences occurred. This was expected as the insect chemical composition varies strongly intra- and interspecifically due to taxon, feeding, instar, and processing, among others. In general, the insects mainly consisted of fat (35 to 60%) and protein (25 to 38%), with 2 to 16% nitrogen-free extract, 2 to 15% fibre, 3 to 5% ashes, 0.4 to 1.6% Na, and 0.6 to 1.4% Cl (dry matter base). In this way, this contribution adds to the compositional knowledge about traditional insect-based foodstuffs. The combination of high fat and protein with low carbohydrates makes them suitable to combat nutrition disorders.

scholarly journals The Effect of Low-Density Poly Ethylene (LDPE) Towards Plastic Oil Quality

2021 ◽  
Vol 10 (1) ◽  
pp. 1-8
Author(s):  
Dedy Hariadi ◽  
Sofyan M. Saleh ◽  
R. Anwar Yamin ◽  
Sri Aprilia
Keyword(s):  
High Density Polyethylene ◽  
Oil Quality ◽  
Chemical Compounds ◽  
Low Density ◽  
Daily Life Activities ◽  
Plastic Bags ◽  
Carbon Compounds ◽  
Poly Ethylene ◽  
Average Individual

Nowadays, the use of plastics is inseparable from daily life activities for both industrial commercial and household needs. Every year, an average individual consumes 700 plastic bags. Furthermore, the major types of plastic pollutants are High-Density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE). The nature of LDPE plastic makes it very difficult to undergo decomposition. Subsequently, efforts to overcome this problem have been carried out by several methods of processing or utilizing its waste through pyrolysis. This study aims to determine the effect of the quality of LDPE plastic waste on the plastic oil produced from the pyrolysis process. Based on their chemical compounds, all plastic oils produced were categorized as carbon compounds instead of hydrocarbons. Although, from the quality of the LDPE plastic used, the process produced gasoline, naphtha, and kerosene, the quality of each oil was different. Therefore, the higher the quality of the LDPE plastic used, the better the quality of the oil produced

scholarly journals Photo-selective shade nets on the production and quality of sugarcane plantlets

2019 ◽  
Vol 23 (5) ◽  
pp. 366-371 ◽  
Author(s):  
José J. F. Cordeiro Júnior ◽  
Héliton Pandorfi ◽  
José A. D. Barbosa Filho ◽  
Alex S. Moraes ◽  
Luiz A. de Almeida Neto ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Substrate Temperature ◽  
Principal Component ◽  
Global Solar Radiation ◽  
Saccharum Officinarum ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT Brazil is the world’s largest producer of sugarcane (Saccharum officinarum L.) and research aimed at propagation has promoted higher quality in production. The objective of this study was to investigate the effect of the variation of micrometeorological elements on the survival and quality of pre-sprouted sugarcane plantlets. The study was carried out in a protected environment (UFRPE). Plantlets of the cultivar RB92579 were obtained by the technique of production of pre-sprouted plantlets. The protected environments were divided into four modules covered with low-density polyethylene plastic + photo-selective shade nets and one module without shade net. Micrometeorological data of global and photosynthetically active solar radiation, air temperature, substrate temperature, relative humidity and the solar radiation spectrum were recorded in each module. The experiment was conducted in a completely randomized design and the principal component analysis was used to verify the association between the cultivation modules, micrometeorological variables and crop variables. Anti-UV low-density polyethylene plastic + freshnet led to lower transmittance of global solar radiation, higher percentage of photosynthetically active radiation and lower plantlet mortality. Substrate temperature above 30.2 °C resulted in higher plantlet mortality. Larger spectrum in the red range led to the production of better quality plantlet. The use of freshnet shade net promoted adequate conditions for the cultivation of sugarcane plantlets and allows obtaining better quality plantlets.

scholarly journals Chemical Composition of Earthworm (Eisenia foetida) Co-Dried with Vegetable Meals as an Animal Feed

2019 ◽  
Vol 16 (2) ◽  
pp. 79-92
Author(s):  
Kirenia Pérez-Corría ◽  
Aroldo Botello-León ◽  
Abril Karina Mauro-Félix ◽  
Franklin Rivera-Pineda ◽  
María Teresa Viana ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Animal Species ◽  
Animal Feed ◽  
Eisenia Foetida ◽  
Corn Meal ◽  
Feed Ingredient ◽  
Nitrogen Free Extract ◽  
Market Requirement

To evaluate the chemical composition of the earthworm (Eisenia foetida) co-dried (EW) with vegetable meals (VM) as animal feed ingredient, the blends were mixed with wheat bran (WB), rice powder (RP), corn meal (CM) and soy cake meal (SCM) in proportions of 85:15; 75:25 and 65:35. The dry matter (DM), crude protein (CP), crude fat (CFA), crude fiber (CF), ashes and nitrogen-free extract (NFE) of the ingredients and final mixtures were determined. All the mixtures resulted with a high content of DM (≥90.00 %). No significant differences among the proportions were revealed (P>0.05). In addition, the higher inclusion of the earthworm in the proportions (85:15) increased (P<0.05) the CP (54.70 %), CFA (7.28 %), and ashes (10.20 %), mainly when mixed with SCM, CM, and RP, respectively. However, the use of vegetable meals proportionally increased the CF (7.31 %), and NFE (52.62 %), mainly with the proportion of 65:35 and with RP and CM, respectively (P<0.05). The results showed that the vegetable meals (WB, RP, CM, and SCM) are useful to co-dry the earthworm to be use for animal feed. It is concluded that the most appropriate proportion (VM:EW) will depend on the animal species, productive stage and market requirement.

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