Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEffect of Washing and Cooling Treatments on Microbial Contents and Sensory Evaluation of Eggs During Storage
تأثير معاملات الغسل و التبريد في المحتوى الميكروبي و الصفات الحسية للبيض في مراحل تخزينه
1208
1 30
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2010
fields
Food Sciences
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
هدف البحث إلى تحديد تأثير كل من عمليتي غسل البيض و تبريده في محتواه الميكروبـي (بكتيريـا و خمائر و فطريات العفن) و في جملة من خصائصه الحسية (الرائحة و اللـون و القـوام و حجـم الحجـرة الهوائية) و ذلك خلال مدة التخزين التي امتدت 92 يوما. طُبقت أربعة أنواع من المعاملات علـى البـيض الطازج، شملت الأولى البيض غير المغسول و غير المبرد، و تضمنت الثانية البيض المبرد غير المغسول، و المعاملة الثالثة كان فيها البيض مغسولاً و غير مبرد، أما الرابعة فالبيض كان مغسولاً و مبـرداً. بينـت نتائج الاختبارات أن المعاملات جميعها خلت من السالمونيلا، أما أفضل معاملة من المعاملات الأربع فكانت الرابعة (البيض المغسول و المبرد)، تلتها الثانية (البيض المبرد و غير المغسول)، و في المرتبـة الثالثـة المعاملة الثالثة (البيض المغسول غير المبرد).
The objective of this investigation was to determine the effect of washing and cooling treatments on microbial content and sensory evaluation of eggs during storage. Four treatments were applied: first unwashed and uncooled (UW-UC), second unwashed, but cooled (UW-C), third washed and uncooled (W-UC), and finally: washed and cooled (W-C). Microbiological studies ( total count of bacteria, yeast, fungi and salmonella) and sensory evaluation of eggs have been carried out to determine the best treatment applied on eggs during storage time (92 days). Result showed that all treatments were free from Salmonella. The washing and cooling treatment (W-C) was the best, followed by the unwashed but cooled (UW-C). the third in order was the washed uncooled and finally the unwashed uncooled treatment.
References used
Anderson, K. E., Jones, F. T., and Curtis, P. A. (1992). Heat loss from commercially packed eggs in post-processing coolers. NC Cooperative extension service special report. Vol. 1, ER-1April 1992. North Carolina State University, Raleigh, NC
Banwart, G. J. (1998). Basic Food Microbiology 2ed. Chapman& Hall New York 393-409
Baumler, A. J., Hargsb. M. B and Tsolis R. M. (2000). Tracing the origins of Salmonella out breaks Science 287:50-52
rate research
Read More
This investigation was conducted to study the effect of cooling preservation
on some microbiological (total count of organism, yeast and fungi, Coliform
bacteria), chemical (total soluble solids, total acids, vitamin C) parameters and
sensory eval
uation of Broccoli during refrigerated storage and to determine the
acceptability of the best treatment of the broccoli by customer during
refrigerated storage. Two hybrids of broccoli, F1 Kondi and F1 Kibbah grow at
Abi Jarash farms of Damascus University in 2011/2012 season were used.
Three treatments were applied on two hybrids of broccoli. Treatments 1
(broccoli was stored without any packaging), treatments 2 (broccoli was stored
after packaging without vacuum sealed) and treatments 3 (broccoli was stored
after packaging with vacuum sealed).
Results showed and based on microbiology, chemically and sensory
evaluation that the best treatment to save the broccoli reverberated was
treatment 3 for the both hybrids of broccoli F1 Kondi and F1 Kibbah (broccoli
was stored after packaging with vacuum sealed) where the broccoli F1 Kondi
was preserved without any changes in sensory parameters and accepted
qualities for 15 days and for 10 days for broccoli F1 Kibbah.
The aim of present research was to study chemical, microbial and sensory
changes of commercial eggs during refrigerated storage and after treatment
with two different chlorinated water concentrations (100 ppm and 200 ppm)
and two different tempera
tures (20ºC and 40ºC) for 1 minute. Microbial
analysis showed that all eggs samples were free of Pseudomonas, Salmonella,
E.coli bacteria, molds and yeasts. The best treatment was (100 ppm at 20 °C),
followed by treatment with 100 ppm at 40 ° C and the third one was control
sample.
The aim of this investigation is studying effect of heat treatment and polyethylene packaging method in storability and quality of lemon fruits' Monachello and Enterdonato'. The experience was carried out in cold store of agriculture college in /Dama
scus university/, lemon fruits were stored at 10°c and 85% humidity for 180 days. laboratory experiences was carried out in laboratory of department of horticultural science in the same college during 2010-2011&2011-2012. Part of fruits were packaged in polyethylene bags with 30 microns, the other part of fruits dipped with hot water (62°c for 3 seconds)+ fungicide then were packed in polyethylene packs in addition to the control which untreated and unpacked.
The obtained results indicated the significant effect of dipping and packaging in perforated and unperforated bags treatments in maintain fruits quality of 'Monachello and Enterdonato' until the end of storage. maintaining of (32.89 and 39.06%( juice rate of Monachello respectively, and(11.05 and10.01%) of Enterdonato respectively. (35.27 and 36.57 mg/100ml (vitamin C of Monachello and (18 and11.07mg/100 ml( of Enterdonato, respectively.
On the other hand, the present investigation showed the positive effect of packaging treatment with 30 microns packs by reducing the weight loss for two sorts which was (51.94 and 68.83%) in dipping and packaging in perforated bags treatment respectively, and the important role to stop fruit decadence, and conserve their marketing specification until end of storage.
Orange fruits are characterized at harvesting with physical and sensory
properties determine consumer acceptance and in order to identify these
characteristics and vulnerability storage and irradiation conditions, Valancia
orange fruits were subje
cted to gamma irradiation at doses of 0.0, 0.5, 1.0, and
1.5 kGy using gamma 60Co irradiator facility. Fruits were kept in a refrigerator
for 18 weeks. Results indicated that physical and sensory properties of Valencia
orange fruits were affected by storage time and irradiation. The overall color
differences were increased and the firmness of fruits and skin were decreased.
The used doses of gamma irradiation increased the overall color differences of
fruit skin. Whereas the fruit firmness, and the sensory properties (aroma,
color, test and firmness) of irradiated Valencia orange fruits were decreased.
The aim of this research was studying effects of traditional heat treatments
used in hen egg preparing in nutrient compounds content and nutrient value.
This research was conducted in internal trade and consumer protection
directorate laboratories.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
