scholarly journals Relationship of temperature and length of storage on ph of internal contents of chicken table egg in humid tropics

2016 ◽  
Vol 32 (3) ◽  
pp. 285-296 ◽  
Author(s):  
Ayoola Mathew ◽  
Alabi Olufemi ◽  
Aderemi Foluke ◽  
Oguntunji Abel
Keyword(s):  
Shelf Life ◽  
Storage Temperature ◽  
Storage Period ◽  
Storage Conditions ◽  
Humid Tropics ◽  
Ph Values ◽  
Randomized Design ◽  
Internal Properties ◽  
Relationship Of ◽  
And Storage

All foods have limited shelf life which vary depending on the food and storage conditions. Table eggs are perishable food and storage temperature is an important factor that affects the shelf life. In tropical countries like Nigeria, eggs are usually preserved under ambient condition due to erratic power supply, which reduces the efficiency of refrigeration system. The aim of the present study was to examine the effects of storage periods, temperature and their relationship on the pH of chicken egg internal properties (yolk, albumen and whole egg). Fresh chicken table eggs were randomly allotted to three treatments of storage temperatures; refrigerator (40C ? 2), laboratory (320c ? 4), and poultry store room (370C ? 4). Eggs were assigned to treatments in a completely randomized design, and each treatment was replicated thrice. The pH was measured daily for each storage temperature in all treatments. Storage temperature and periods had significant (P<0.05) effect on pH of measured parameters. The pH values increased with storage temperature and period of storage. The rate of pH increase was significantly (P<0.05) higher in ambient as compared to refrigerator temperature. In this study, only the refrigerator storage has pH values within the range for fresh table eggs. At storage period above three weeks, pH values increased beyond the range for fresh egg. It is validated that storage temperature and period affected egg shelf life, the rate of freshness reduced with increased temperature, thus, storage beyond three weeks of ambient temperature is not advisable in humid tropics.

scholarly journals Pengujian Umur Simpan Kopi Arabika Bubuk Pada Jenis Kemasan dan Suhu Simpan Yang Berbeda

2021 ◽  
Vol 8 (1) ◽  
pp. 37
Author(s):  
Elsera Br Tarigan ◽  
Edi Wardiana ◽  
Handi Supriadi
Keyword(s):  
Shelf Life ◽  
Storage Temperature ◽  
Storage Period ◽  
Fat Content ◽  
Test Method ◽  
Life Test ◽  
Coffee Plantations ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
And Storage

<p><em>Coffee is a beverage that is widely consumed around the world. Proper packaging and storage temperature may extend shelf life of ground coffee. The study aimed to analyze the shelf life of ground Arabica coffee stored in different packaging types and temperature, conducted at smallholder coffee plantations in Garut Regency and the Integrated Laboratory of Indonesian Industrial and Beverage Crops Research Institute, Sukabumi, from June to August 2018. A completely randomized design in factorial was used with 3 factors and 2 replications. The first factor was the packaging type  which consisted of 3 types: thick alumunium  foil 65</em><em>m</em><em> (AF65), thick alumunium  foil 130</em><em>m</em><em> (AF130), and thick lamination 114</em><em>m</em><em> (L144). The second factor was the storage temperature which consisted of 3 levels: 25 <sup>o</sup>C, 35 <sup>o</sup>C, and 45 <sup>o</sup>C, while the third factor was the storage period which consisted of 5 levels: coffee unstored, and coffee stored for 2 weeks, 4 weeks, 6 weeks, and 8 weeks. The variables observed were the water and fat content, and the analysis of shelf life was carried out using the ASLT (Accelerated Shelf Life Test) method. The results showed that during storage, the water content increased, whereas the fat content decreased. Fat content is a critical variable in determining the shelf life of coffee. The coffee in AF130 packaging has longer shelf life than in AF65 and L144. To extend the shelf life of coffee packaged in AF130 and L144 is best kept at 45<sup> o</sup>C whereas coffee in AF65 packaging  is ideally at 25<sup> o</sup>C.</em></p>

scholarly journals Influence of drying methods on preservation of biologically active substances of garden strawberries being raw material for food enrichment

2021 ◽  
Vol 845 (1) ◽  
pp. 012094
Author(s):  
I M Novikova ◽  
O M Blinnikova ◽  
L G Eliseeva ◽  
D A Blinnikova
Keyword(s):  
Shelf Life ◽  
Storage Period ◽  
Storage Conditions ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Raw Material ◽  
Drying Methods ◽  
Urgent Problem ◽  
And Storage ◽  
Active Substances

Abstract At present, the preservation of the consumer properties of berry products is an urgent problem. Use of fresh garden strawberries is limited by a short storage period and seasonality. Under optimal storage conditions in a normal atmosphere, the average shelf life of strawberries is from 2 to 9 days depending on the variety. To meet the needs of the population in garden strawberries and meet the physiological needs in a unique complex of biologically active substances, strawberries are subjected to different processing methods. Drying being a type of fruit and berry products processing has the following advantages: a significant increase in the shelf life of products, a decrease in the mass and storage volumes of dried berries, preservation of minerals, carbohydrates, dietary fiber, antioxidants, bioflavonoids and many biologically active compounds in berries. Modern drying technologies allow preserving the content of essential vitamins to its full extent. Comparison of two technologies for drying garden strawberries has established that vitamins and other biologically active substances are well preserved in berries. Berries dried by convective vacuum-impulse method (CVI) are recommended to be used for food enrichment.

scholarly journals Salep Kullanımının Fermente Türk Sucuğu Kalite Parametreleri Üzerine Etkisi

2018 ◽  
Vol 6 (2) ◽  
pp. 219
Author(s):  
İsmail Gök ◽  
Birol Kılıç ◽  
Cem Okan Özer
Keyword(s):  
Shelf Life ◽  
Storage Period ◽  
Quality Parameters ◽  
Control Group ◽  
Meat Industry ◽  
Treatment Groups ◽  
Ph Values ◽  
Tbars Values ◽  
And Storage ◽  
All Treatment

The aim of this study, the effect of addition to salep at different concentrations (2.5, 5, 7.5 and 10%) into sucuk on physicochemical, textural and sensorial properties were investigated at d fermentation and storage periods (5., 10., 20. ve 30. days). The results indicated that TBARS values gradually increased during fermentation and storage periods in all treatment groups. However, addition of 10% salep decreased TBARS values compared to control group at the end of fermentation and storage period. pH values of sucuks were decreased with addition of salep. Higher L* values were observed in sucuk with 10% salep at the end of the fermentation and storage period. Increasing levels of salep in sucuk formulation caused an increase in hardness and ash values, a decrease in moisture values in sucuk. The results of this study indicated that salep may be used in sucuk manufacture by the meat industry to improve shelf-life and quality parameters of the product.

scholarly journals Germination and Water Content of Cocoa Seeds After Storage Treatments

2018 ◽  
Vol 34 (3) ◽  
pp. 146-155
Author(s):  
Indah Anita-Sari ◽  
Bayu Setyawan ◽  
Agung Wahyu Susilo
Keyword(s):  
Shelf Life ◽  
Water Content ◽  
Storage Temperature ◽  
Seed Viability ◽  
Vacuum Packaging ◽  
Recalcitrant Seed ◽  
R Program ◽  
Randomized Design ◽  
The Stability ◽  
And Storage

The challenge of providing cocoa seeds is the characteristic of recalcitrant seed, thus requiring storage techniques that can slow down the decline in seed viability in an effort to manage the distribution of cocoa seeds which depend to the time of demand and harvest. The research aimed to study the effect ofpackaging method for storage of cocoa seeds; the effect of shelf life and temperature to germination and water content of seeds, and the stability of seed germination at different age and storage temperature. The research was conducted at Kaliwining Experimental Station, Indonesian Coffee and Cocoa Research Institute, Jember, East Java. The research used complete randomized design with research design using split plot. The treatments consisted of packaging methods, storage temperature and storage life. Packaging methods consisted of two methods, i.e. vacuum methods and non vacuum methods. Storage temperature consisted of three treatments, i.e. 15OC, 25OC and 30OC. both of packaging and temperature treatments were stored at four shelf life treatment included 1 week, 2 weeks, 3 weeks, and 4 weeks. Each treatment was repeated with three replications and each treatment per replication consisted of 50 seeds. Data analysis used SAS 9.0 and stability analysis used R program and PB Tool. Water content of seeds, germination of seeds and number of seedy seeds were observed. The results showed that type of packaging and storage temperature effect to germination of cocoa seeds but did not effect to seeds water content. Storage of cocoa seeds by non-vacuum packaging showed a higher of germination compared to vacuum packaging in all temperature treatments. Storage with non vacuum packaging at a temperature 25OC showed a germination more than 85% for 2 weeks of shelf life, while storage of cocoa seeds at a temperature of 30OC had a germination of more than 85% for only 1 week shelf life. Storage of cocoa seed at 15OC showed the lowest of germination at treatment. Storage treatments did not show effect on water content of cocoa seeds.

scholarly journals Postharvest properties of sweet cherry fruit depending on rootstock and storage conditions

2017 ◽  
Vol 29 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Ewa Dziedzic ◽  
Jan Błaszczyk ◽  
Elżbieta Kaczmarczyk
Keyword(s):  
Sweet Cherry ◽  
Storage Temperature ◽  
Storage Period ◽  
Storage Conditions ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Soluble Solids Content ◽  
Fruit Storage ◽  
Solids Content ◽  
And Storage

ABSTRACT‘Regina’ sweet cherry fruit (Prunus avium L.) harvested from trees grown on vigorous and semi-dwarfing rootstocks was stored in normal atmosphere (NA) at 8°C and 2°C, and in a controlled atmosphere (CA) 3% O2 + 5% CO2at 2°C for two weeks. At harvest time, the fruits differed in the measured quality parameters (firmness, soluble solids content - SSC, titratable acidity - TA) depending on the rootstock. The storage conditions and the rootstocks significantly influenced the fruit quality parameters after storage. Generally, reduced fruit firmness and TA, and higher SSC and SSC/TA ratio were observed at the end of the storage period. Among the rootstocks, the lowest soluble solids content was found in the fruit from trees on the vigorous F12/1 rootstock. The lower storage temperature decreased the SSC independently of the storage atmosphere composition. Firmer fruit was found in CA 2°C compared with the other two treatments. The greatest loss of weight was found after fruit storage in NA 8°C. The extent of fruit decay depended on the season, storage conditions and the rootstock. Storage in NA 8°C of the fruit grown on F12/1 rootstock resulted in the highest percentage of fungal decay. The best retention of the green colour of the peduncle was noted in CA 2°C. The findings on how the rootstocks affect sweet cherry fruit properties can be useful for sweet cherry breeding programmes, as well as for sweet cherry crop production and storage technologies.

scholarly journals Influence of Different Concentrations of 1-Methylcyclopropene (1-MCP) and Storage Conditions on the Physico-chemical Properties and Shelf-life of Tomatoes (Solanum lycopersicum L.)

2019 ◽  
pp. 1-11
Author(s):  
M. E. Amoateng ◽  
P. Kumah ◽  
I. Yaala ◽  
B. Amoasah
Keyword(s):  
Shelf Life ◽  
Chemical Properties ◽  
Titratable Acidity ◽  
Storage Conditions ◽  
Ambient Conditions ◽  
Tomato Cultivar ◽  
Solanum Lycopersicum L ◽  
Randomized Design ◽  
Gas Loss ◽  
And Storage

‘Power’ tomato cultivar was harvested at the mature green stage and studied to determine how different 1-Methylcyclopropene (1-MCP) concentrations and storage conditions may influence its quality and shelf-life. A 3 x 2 factorial arrangement in Completely Randomized Design (CRD) was used and it was replicated three times. The factors were the tomato cultivar: ‘Power’, three 1-MCP concentration levels: 1 ppm, 2 ppm, untreated was 0 ppm and two storage conditions: Ambient and refrigerator conditions. The research was conducted between January and May 2017 at the Department of Horticulture, KNUST in Kumasi, Ghana. The 1-MCP concentration required were obtained by adding 100 ml of heated distilled water at 50°C to appropriate amounts of 1-MCP (MaxFresh, 3.3%) powder to obtain the 1 ppm and 2 ppm concentrations. After the 1-MCP powder has completely dissolved, it was then placed in a sealed bottle with a mini fan attached and then placed in the treatment chamber and released in a form of vapour on fruits and sealed immediately to avoid gas loss for a period of 24 hours. They were then stored in the refrigerator and ambient conditions at a temperature of 13°C-15°C and 29.5°C with Relative Humidity of 60-75% and 80-85% respectively. There was a significantly (P<0.01) delayed in ripening as characterized by changes in pH, firmness and total titratable acidity. Tomatoes treated with 1 ppm and 2 ppm of 1-MCP concentrations had delayed ripening when stored in the refrigerator and as a result had a longer shelf-life of 74 and 90 days respectively compared to fruits that were not treated and kept at ambient condition which took 60 days. There is confirmation from these results that the use of 1-MCP have saleable outlook for those who grow and trade in a way of delaying the ripening of green tomatoes.

Viability of Salmonella and Listeria monocytogenes in Delicatessen Salads and Hummus as Affected by Sodium Content and Storage Temperature

2012 ◽  
Vol 75 (6) ◽  
pp. 1043-1056 ◽  
Author(s):  
WALID Q. ALALI ◽  
DAVID A. MANN ◽  
LARRY R. BEUCHAT
Keyword(s):  
Listeria Monocytogenes ◽  
Storage Temperature ◽  
Storage Period ◽  
Sodium Concentration ◽  
Sodium Content ◽  
Initial Population ◽  
Ph Values ◽  
Plate Counts ◽  
Survival And Growth ◽  
And Storage

A study was conducted to determine survival and growth behavior of Salmonella and Listeria monocytogenes in commercially prepared mayonnaise-based potato salad, macaroni salad, and coleslaw and in hummus (initial mean pH values were 4.80 to 4.94, 4.18 to 4.31, 3.87, and 4.50 to 4.52, respectively) as affected by sodium concentration (133 to 364, 190 to 336, 146 to 272, and 264 to 728 mg/100 g, respectively) and storage at 4 or 10°C for up to 27 days. Salmonella did not grow in any of the test products. Initial populations (2.02 to 2.38 log CFU/g) decreased in coleslaw to undetectable levels (&lt;1 CFU/25 g) within 13 days and in most formulations of macaroni salad within 20 to 27 days. Salmonella survived in highest numbers in potato salad and hummus. The presence of added sodium in macaroni salad stored at 4°C and hummus stored at 4 or 10°C appeared to protect Salmonella against inactivation. L. monocytogenes, at an initial population of 1.86 to 2.23 log CFU/g, did not grow in test products, but with the exception of coleslaw containing sodium at a concentration used in the standard (control) recipe, this pathogen was detected by direct plating (≥1.0 log CFU/g) in all products stored at 4 or 10°C for 27 days. L. monocytogenes populations were significantly (P &lt; 0.05) lower in potato salad and hummus with no added sodium than in test products with added sodium after storage at 4°C. Sodium concentration did not markedly affect aerobic plate counts over the 27-day storage period. Results confirm that the acidic pH of mayonnaise-based salads and hummus is a major factor preventing growth and influencing rates of inactivation of Salmonella and L. monocytogenes. In the absence of added sodium, death of these bacteria may be more rapid. However, in general decreasing or increasing the sodium concentration in selected delicatessen salad and hummus recipes does not markedly affect the behavior of Salmonella and L. monocytogenes when products are stored at 4 or 10°C for up to 27 days.

Prediction of Quality and Storage Period of Soybean in Small Packages under Different Temperature

2015 ◽  
Vol 731 ◽  
pp. 389-392
Author(s):  
Wen Li Dong ◽  
Wei Xiao ◽  
De Pu Li ◽  
Zhi Hui Sun
Keyword(s):  
Fatty Acid ◽  
Shelf Life ◽  
Storage Temperature ◽  
Storage Period ◽  
Acid Value ◽  
Order Kinetic ◽  
Shelf Life Prediction ◽  
Solubility Ratio ◽  
And Control ◽  
And Storage

The variation and dynamics of fat, fatty acid value and dissolution rate of protein of soybean under four storage temperatures conditions were studied. Dynamical model between the value of fatty acid and storage time, storage temperature was build according to the first-order kinetic equation which could predict and control the quality changes of soybeans during storage. The results showed that fat content of soybean and solubility ratio of protein were decreased with the extension of storage but the fatty acid value was increased. The shelf life was predicted according to the change of value of fatty acid during storage. Shelf life prediction model of any temperature between 5~35°C was established used Arrhenius equation and Q10 model and the error rate is less than 10%.

Effect of Ozone Pretreatment on Fish Storage Life at Low Temperatures

2005 ◽  
Vol 68 (4) ◽  
pp. 778-784 ◽  
Author(s):  
A. GELMAN ◽  
O. SACHS ◽  
Y. KHANIN ◽  
V. DRABKIN ◽  
L. GLATMAN
Keyword(s):  
Shelf Life ◽  
Storage Temperature ◽  
Storage Period ◽  
Control Fish ◽  
Temperature Regimes ◽  
Ozone Pretreatment ◽  
Sensory Qualities ◽  
And Storage ◽  
Storage Characteristics ◽  
Sensory Tests

The purpose of the present study was to determine the effect of ozone pretreatment of live fish on their shelf life and storage characteristics during storage at 0 and 5°C. The evaluation included sensory, chemical, physical, and bacteriological tests at set intervals throughout a storage period of 30 days under two temperature regimes (0 and 5°C). The results of the sensory tests showed that ozone pretreatment of live tilapia prolonged their shelf life by 12 days and improved their quality characteristics during storage at 0°C for 30 days. These results were corroborated by the bacteriological tests. The sensory qualities of ozone-treated tilapia stored at 5°C became unacceptable 3 days later than those of control fish. Although the most important factor affecting the fish shelf life is storage temperature, the combination of ozone pretreatment with storage at 0°C appears to be a promising means of prolonging the shelf life.

scholarly journals EFFECTS OF PLANT INGREDIENTS WITH PRO-HEALTH PROPERTIES AND STORAGE CONDITIONS ON TEXTURE, COLOR AND SENSORY ATTRIBUTES OF STRAWBERRY (FRAGARIA × ANANASSA DUCH.) JAM

2017 ◽  
pp. 610 ◽  
Author(s):  
Anna Korus ◽  
Anna Banaś ◽  
Jarosław Korus
Keyword(s):  
Storage Temperature ◽  
Storage Period ◽  
Storage Conditions ◽  
Gel Strength ◽  
Fragaria Ananassa ◽  
Steviol Glycoside ◽  
Texture Parameters ◽  
Japanese Quince ◽  
Flax Seeds ◽  
And Storage

The following work compares the parameters of texture and color as well as sensory indicators in low-sugar strawberry (Fragaria × ananassa Duch.) jams both with pro-health plant ingredients (chokeberry, elderberry, Japanese quince, flax seeds, wheat germs and inulin) and without them (control). The products were examined immediately after production and after 6 and 12 months of storage at cold (10oC) and room temperature (20oC). Compared with the control jam, the value of gel strength was the highest in the jams with flax seeds and wheat germs, on average by 21% and 159%, respectively. The investigated ingredients, particularly Japanese quince and elderberry fruit, lowered gel strength by 16% and 21%, respectively. The ingredients used had an effect on all color parameters and the general sensory evaluation. Adding steviol glycoside and Japanese quince lead to the color of jams being substantially brighter; however, the brightest were the jams with added flax seeds and wheat germs. The addition of chokeberry and elderberry caused significant darkening of the jam. The dominant colors in jams were red and yellow, especially in the jam with added steviol glycoside, Japanese quince and wheat germs. After storage, the value of all texture parameters in jams increased; there were also changes in color, jams were lighter after storage at 20oC. After a 12-month storage period, the jam with added chokeberry scored the highest (5.0) values, regardless of the storage temperature; the highest scores were also reported for the jam with Japanese quince and inulin stored at 10oC.

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