Do you want to publish a course? Click here

Studying some chemical and microbial properties in Syrian Akkawi cheese

دراسة بعض الصفات الكيميائية و الميكروبية للجبن العكاوي السوري

1775   2   69   0 ( 0 )
 Publication date 2012
  fields Food Sciences
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

This study was carried out at the laboratory of Food Science Department, Faculty of Agriculture, Damascus University in order to evaluate physical, chemical and microbial properties of Akkawi cheese in Syria. Thirty samples of Akkawi Cheese collected randomly from different Syrian cities and urban markets during 2011 were analyzed. Chemical and microbiological analyses were applied to determine their suitability to the Syrian standards. Results showed that the quality of cheese samples did not fulfill the set minimum Syrian quality standards and the proportion of the violation of the Syrian specification for total dry matter in cheese samples studied was nearly 10%, and 100% for sodium chloride. The study also demonstrated differences in chemical properties, with an average of acidity, moisture content 0.34 %, 53.9 % respectively. The fat content had a wide range for all cheese samples. On the other hand, the proportion of health violation for this type of cheese from the Syrian standard was 73.3 % for Coliform bacteria and 56.6 % for the E. coli. but they were acceptable for the existence and account of Staphylococcus aureus , Salmonella and Listeria.


Artificial intelligence review:
Research summary
هدفت هذه الدراسة إلى تقييم الجبن العكاوي المنتج في سوريا من خلال تحديد مواصفاته الفيزيائية والكيميائية والميكروبية. تم جمع ثلاثين عينة من مناطق مختلفة في سوريا خلال عام 2011. أظهرت النتائج أن جودة الجبن لم تطابق الحد الأدنى من المواصفات القياسية السورية، حيث كانت نسبة المخالفة للمادة الجافة الكلية حوالي 10%، ولملح كلوريد الصوديوم 100%. كما أظهرت الدراسة تفاوتًا في الخصائص الكيميائية، حيث بلغ متوسط نسبة الحموضة 0.34% ومتوسط المحتوى الرطوبي 53.9%. أما بالنسبة للخصائص الميكروبية، فقد كانت نسبة المخالفة الصحية نحو 73.3% بالنسبة إلى بكتيريا الكوليفورم و56.6% بالنسبة إلى بكتيريا E. coli، بينما كانت أعداد بكتيريا Staphylococcus aureus ضمن الحدود المسموح بها محليًا، وخلو العينات من بكتيريا السالمونيلا والليستيريا. توصي الدراسة بضرورة مراعاة الشروط الصحية والنظافة خلال مراحل تصنيع المنتجات وتداولها وبيعها، وتحاشي تناول الأجبان البيضاء المحلية إلا بعد أن تعامل حراريًا كوسيلة للتخلص من الأحياء الدقيقة الممرضة الممكن وجودها.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة نحو تحسين جودة وسلامة الجبن العكاوي المنتج في سوريا. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة. أولاً، الدراسة اعتمدت على عينات محدودة من مناطق معينة، مما قد لا يعكس الوضع العام في جميع أنحاء البلاد. ثانيًا، لم تتناول الدراسة تأثير العوامل البيئية والموسمية على جودة الجبن. ثالثًا، كان من الممكن أن تتضمن الدراسة توصيات أكثر تحديدًا لتحسين عمليات الإنتاج وضمان الامتثال للمواصفات القياسية. وأخيرًا، كان من الممكن أن تكون هناك مقارنة مع منتجات مشابهة من دول أخرى لتحليل الفروقات وتحسين الجودة.
Questions related to the research
  1. ما هي نسبة المخالفة للمادة الجافة الكلية في عينات الجبن المدروسة؟

    كانت نسبة المخالفة للمادة الجافة الكلية حوالي 10%.

  2. ما هي نسبة المخالفة لملح كلوريد الصوديوم في العينات المختبرة؟

    كانت نسبة المخالفة لملح كلوريد الصوديوم 100%.

  3. ما هي نسبة الحموضة ومتوسط المحتوى الرطوبي في العينات المختبرة؟

    بلغ متوسط نسبة الحموضة 0.34% ومتوسط المحتوى الرطوبي 53.9%.

  4. ما هي نسبة المخالفة الصحية بالنسبة إلى بكتيريا الكوليفورم وE. coli؟

    كانت نسبة المخالفة الصحية نحو 73.3% بالنسبة إلى بكتيريا الكوليفورم و56.6% بالنسبة إلى بكتيريا E. coli.


References used
AOAC. 1990. Official methods of analysis, 15th Ed., Association of Official Analytical Chemists. Washington. DC. U.S.A
Aydemir, A. S. 2000. Lipaz enziminin Beyaz ve Kaşar peynirlerinin olgunlaşması uzerine etkisi. A. U. Fen Bilimleri Enstitusu, Doktora Tezi, Ankara
Beerens, H. and F. Luquet. 1987. Guide practique analyse microbiolog- que Des Laits Et Des Produits Laitiers. Lavoisier 11, Rue Lavoisier, Paris Cedex 08
rate research

Read More

This research was conducted in Agriculture College (Food Science Dep., Damascus U university). The purpose of this research was to evaluate Cherkes Cheese by determination some Chemical and microbial properties for 40 samples collected randomly fr om different places Damascus and country sides. The results showed very deferent changes in Chemical properties. The acidity ranged between (0.25 - 0.54%), moisture content (38 - 56%), and total dry matter (44 - 62.7%). Results also showed that all samples were rejected by (Syrian Normal Standard)for fat content in dry matter (20 -33%). Fifty percent of samples were rejected for their content of sodium chloride which was (1.2 - 4.3%). Results also showed that samples were free of Salmonella and there was no rejection for existence of Staph. aureus but 37.5 % and 10% of samples were rejected by (Syrian Normal Standard)as per content of coliform and E.coli, respectively.
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.
Akkawi chesse is classified as white brined cheese is produced in the Middle Eastern region as Syria, Plestin, Jordan and Lebanon countries. In this study, Akkawi cheese was manufactured by traditional method using raw cow's milk with a content of 13.44% total solids, 4.20% fat, 3.48% total protein, 0.17% acidity and pH 6.65.
In this paper, we evaluated some varieties of local white cheeses (Baladi and Akkawi). 100 samples were collected randomly from various production sites in Syria between 2003 and 2004. Chemical and microbiological analyses were applied to determin e their suitability to the Syrian standards. This study shows that their quality do not fulfill the set minimum Syrian quality standards. The microbiological analyses (Coliform, Escherichia, Staphylococcus aureus, and Salmonella), rate was 75% for Coliform organisms and 66% for Escherichia in Baladi, while it decreased to 43% for Coliform and 25% for Escherichia in Akkawi. As concerns the positive coagulation bacteria (S. aureus), the rate exceeded 15% for both types of cheeses. 18% and 12% of Salmonella were found in Baladi and Akkawi also respectively. Various types of Coliform and Salmonella were identified. This study indicated that local cheeses have no uniform or standardized chemical characteristics. The averages of acidity, moisture content and salt percentage were 0.24%, 60%, and 2.6%, for Baladi and 0.28%, 53.53%, and 9.96% for Akkawi, respectively. The fat content had a wide range for all cheese samples. This study classified these fresh cheeses as raw cheeses that have vast flora and no uniform chemical and quality characteristics. The above findings, lead to different defects and properties which do not fulfill the Syrian quality standards. Thus, the quality of Syrian cheeses varieties is still questionable.
Five Species of the most widely consumed fish in the Syrian Coast (namely Merluccius merluccius, Diplodus sargus, Siganus luridus, Lithognathus mormyrus, and Chelon labrosus). were selected for this research. Samples were collected from the fish m arket in lattakia, with weight ranging between 150 and 200g. Samples were cleaned by removing scales and inner organs, freezed at -35°C for five hours and then stored at - 18°C for a maximum period of six months. Chemical analysis of fish samples was carried out before and after freezing periods of one week, 1, 2, 4 and 6 months. Analysis included determination of moisture, proteins, lipids, acidity, volatile nitrogen, and peroxide value. Organoleptic evaluation was also performed on the control (fresh samples) and on the frozen samples after thawing and frying. The evaluation included taste, flavor, color, texture or meat consistency and form homogeneity.

suggested questions

comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا