scholarly journals Effect of preservatives on the shelf-life and sensory characteristics of pasteurized liquid whole egg stored at 4°C

2019 ◽  
Vol 98 (11) ◽  
pp. 5940-5948
Author(s):  
Lenka Necidová ◽  
Šárka Bursová ◽  
František Ježek ◽  
Danka Haruštiaková ◽  
Lenka Vorlová ◽  
...  
Keyword(s):  
Shelf Life ◽  
Sensory Characteristics ◽  
Liquid Whole Egg ◽  
Whole Egg

scholarly journals Shelf life extension of liquid whole eggs by heat and bacteriocin treatment

2010 ◽  
Vol 28 (No. 4) ◽  
pp. 280-289 ◽  
Author(s):  
P. Miller ◽  
M.E. Haveroen ◽  
K. Solichová ◽  
R. Merkl ◽  
L.M. McMullen ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Shelf Life ◽  
Proteolytic Activity ◽  
Inhibitory Concentration ◽  
Lipolytic Activity ◽  
Life Extension ◽  
High Proteolytic Activity ◽  
Liquid Whole Egg ◽  
Spoilage Microflora ◽  
Whole Egg

During a 15-month period, samples of commercially pasteurised liquid whole egg (LWE) were tested for the presence of spoilage microflora. The total bacterial counts were 2.2 ± 0.6 log CFU/g and total lactic acid bacteria (LAB) counts were 1.9 ± 0.6 log CFU/g. Enterobacteriaceae were detected in 2 samples. Out of the tested samples, 45 LAB were isolated and identified, with 30 strains identified as Enterococcus faecium, 12 as Enterococcus faecalis, and 3 as Lactobacillus paracasei subsp. paracasei. All strains, except 6 strains of E. faecium, possessed lipolytic activity. All the E. faecalis strains and one strain of E. faecium showed a high proteolytic activity, while moderate proteolytic activity was shown by 3 lactobacilli strains. Minimum inhibitory concentration (MIC) of nisin and Micocin X was measured against groups of isolated strains, and ranged from 10.4 µg/ml to 41.7 µg/ml for nisin and from 0.2 mg/ml to 1.6 mg/ml for Micocin X. The LWEs supplemented with 6.25 mg/l of nisin or with 500 mg/ml of Micocin X were pasteurised at 65°C for 2.5 minutes. The shelf life of LWE with the addition of nisin or Micocin X stored under refrigerator conditions was extended by a minimum of 5 weeks.

Review: Application of Pulsed Electric Fields in Egg and Egg Derivatives

2006 ◽  
Vol 12 (5) ◽  
pp. 397-405 ◽  
Author(s):  
F. Sampedro ◽  
D. Rodrigo ◽  
A. Martínez ◽  
G. V. Barbosa-Cánovas ◽  
M. Rodrigo
Keyword(s):  
Shelf Life ◽  
Electric Fields ◽  
Salmonella Enteritidis ◽  
Structural Changes ◽  
Pulsed Electric Fields ◽  
Egg White ◽  
Treatment Conditions ◽  
Quality Aspects ◽  
Liquid Whole Egg ◽  
Whole Egg

This work overviews works published on the application of pulsed electric fields (PEF) in egg and egg derivatives, grouped by subject, and arranged chronologically in terms of the factor studied (microorganisms, quality aspects, shelf life and structural changes in gel formation properties). The inactivation of microorganisms by PEF in egg is very considerable, 3.5 decimal reductions in egg white were achieved by PEF in Salmonella enteritidis, 5.5 log reductions of Listeria innocua by means of a synergistic effect of PEF and nisin in liquid whole egg, and 5.6 log reductions of Escherichia coli in beaten fresh liquid egg by PEF treatment applied continuously or discontinuously in five steps. The shelf life of PEF-treated fresh liquid egg was extended to 4 weeks in refrigeration, and quality (colour, viscosity and sensory attributes) was not affected by PEF treatment. PEF treatment did not cause notable changes in proteins in a solution of ovalbumin and dialysed fresh egg white. However, some structural changes and functional modifications were observed in fresh egg white as a result of PEF treatment. The texture and microstructure of gels were affected by the application of PEF, and therefore PEF treatment conditions in egg white must be optimised to minimise possible modifications.

scholarly journals Shelf Life of Pasteurized Liquid Whole Egg

1973 ◽  
Vol 52 (4) ◽  
pp. 1657-1658 ◽  
Author(s):  
L.R. York ◽  
L.E. Dawson
Keyword(s):  
Shelf Life ◽  
Liquid Whole Egg ◽  
Whole Egg

Survival of Salmonella senftenberg 775W to current liquid whole egg pasteurization treatments

2003 ◽  
Vol 20 (5) ◽  
pp. 593-600 ◽  
Author(s):  
Pilar Mañas ◽  
Rafael Pagán ◽  
Ignacio Alvarez ◽  
Santiago Condón Usón
Keyword(s):  
Liquid Whole Egg ◽  
Salmonella Senftenberg ◽  
Whole Egg

Extension of Shelf Life of Whole and Peeled Shrimp with Organic Acid Salts and Bifidobacteria

1999 ◽  
Vol 62 (1) ◽  
pp. 51-56 ◽  
Author(s):  
MOSFFER M. AL-DAGAL ◽  
WAEL A. BAZARAA
Keyword(s):  
Organic Acid ◽  
Shelf Life ◽  
Generation Time ◽  
Sodium Acetate ◽  
East Coast ◽  
Sensory Characteristics ◽  
Potassium Sorbate ◽  
Lag Phase ◽  
Organic Acid Salts ◽  
Acid Salts

Microbiological and sensory characteristics of treated whole and peeled shrimp from the east coast of Saudi Arabia were evaluated. Shrimp samples were treated with organic acid salts with or without Bifidobacterium breve culture and stored in ice. Peeling alone extended the microbiological shelf life by 4 days. Treatment of whole shrimp with sodium acetate alone or potassium sorbate with bifidobacteria prolonged the microbiological shelf life by 3 days and increased the microbial generation time from 12.8 h (control) to 30.1 h or 31.4 h, respectively. The microbiological and sensory shelf life of peeled shrimp treated with sodium acetate was more than 17 days. Sodium acetate extended the microbial lag phase and lengthened the generation time (38.7 h compared to 15.8 h for the control). Micrococci and coryneforms were the predominant microorganisms in whole shrimp during storage. Treatment with sodium acetate maintained better sensory characteristics for peeled shrimp than potassium sorbate combined with bifidobacteria.

Nonthermal Inactivation of Pseudomonas fluorescens in Liquid Whole Egg

2019 ◽  
pp. 193-211
Author(s):  
M. M. Góngora-Nieto ◽  
L. Seignour ◽  
P. Riquet ◽  
P. M. Davidson ◽  
G. V. Barbosa-Cánovas ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Liquid Whole Egg ◽  
Whole Egg

scholarly journals HOW DOES CRYOGENIC FREEZING AFFECT THE CALORIMETRIC PROPERTIES OF LIQUID EGG PRODUCTS?

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Hidas Karina Ilona ◽  
Ildikó Csilla Nyulas-Zeke ◽  
László Friedrich ◽  
Anna Visy ◽  
Judit Csonka ◽  
...  
Keyword(s):  
Liquid Nitrogen ◽  
Frozen Storage ◽  
Colour Change ◽  
Egg Yolk ◽  
Egg White ◽  
Dry Matter Content ◽  
Scanning Calorimetry ◽  
Egg Products ◽  
Liquid Whole Egg ◽  
Whole Egg

Eggs are widely utilized because of their high nutrient value, coagulating, foaming, emulsifying and sometimes even colouring or flavouring facilities in food manufacturing. Production of processed egg products shows an increasing trend. Frozen products belong to first processing, their shelf life can increase up to 1 year. By freezing, a large reduction in microbial loss can be achieved. But different undesirable processes can occur. The effect of freezing on animal cells is highly dependent on freezing parameters. It has a different effect on egg subtituents. Egg yolk undergoes a gelation process while proteins can denaturate. In our study pasteurized liquid egg products (liquid egg white, liquid egg yolk and liquid whole egg) were frozen by dripping into liquid nitrogen. After that, a 14-day frozen storage experiment was carried out at -18°C. Before freezing and on the 1th, 7th and 14th days of storage experiment pH, dry matter content, colour and calorimetric properties (denaturation temperatures and enthalpy of denaturation) with differential scanning calorimetry were tested. For statistical analysis, one-way ANOVA (α = 0.05) was employed. In our experiment, we found no significant change in calorimetric properties of liquid egg white after freezing, but significant decreasing of enthalpy and denaturation temperatures of liquid egg yolk and liquid whole egg was identified. In contrast, frozen storage had a decreasing effect in all these products. Freezing caused a clearly visible colour change in LEW, a visible change in colour of LWE and a very clearly visible change in colour of LEY. In case of LEW and LEY changes increased to clearly visible 14 days. In conclusion, our results show that frozen storage had a greater effect on liquid egg products properties than freezing in liquid nitrogen.

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