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Production of chitosan films grafted with quinones produced enzymatically for fresh meat bio-packaging

إنتاج أغلفة الكيتوزان المدعمة بالكينونات المنتجة إنزيمياً لأغراض التّغليف الحيوي للّحوم الطّازجة

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 Publication date 2013
  fields Food Sciences
and research's language is العربية
 Created by Shamra Editor




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The production of chitosan polymer had been cheaply optimized from collected shrimp shell wastes collected from Syrian local sources and the yielded chitosan was modified by subjecting molecules to the process of linking the enzymatic partial and to phenol compounds oxidation residues called quinines. The phenol oxidation was done by Laccase enzyme extracted from olive mill solid wastes (Pyrene) and liquid (jift). The amount of extracted phenols from liquid waste was more successful than the solid wastes and thus, it was chosen as a rich source of phenols for being grafted on the chitosan since both of phenols and quinones had a strong activity towards pathogenic microbes. Films were fabricated from the chitosan that was functionalized with quinones. Thus, a double barrier was designed against pathogenic microbes that usually attack uncovered red and white fresh meat in the slaughters and selling places. On the other hand, the research was mainly based on recycling the shrimp shells and olive mill residues that are useless and environmental pollutants.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة إنتاج أغلفة الكيتوزان المدعمة بالكينونات لأغراض التغليف الحيوي للحوم الطازجة. تم استخدام مخلّفات قشور القريدس لاستخلاص الكيتوزان، الذي تم تعديله بعملية ربط إنزيمية باستخدام إنزيم اللاكاز المستخلص من مخلفات معاصر الزيتون. أظهرت النتائج أن الجفت كان أكثر فعالية في استخلاص الفينولات مقارنة بالبيرين. تم تصنيع أغلفة الكيتوزان المحملة بالكينونات، والتي أثبتت فعاليتها في حماية اللحوم الطازجة من الميكروبات الممرضة. الدراسة تركز على إعادة تدوير المخلفات الحيوانية والنباتية، مما يساهم في تقليل التلوث البيئي.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة نحو تطوير حلول مستدامة لتغليف اللحوم الطازجة باستخدام مواد طبيعية ومعاد تدويرها. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم التطرق بشكل كافٍ إلى تكلفة الإنتاج على نطاق واسع، والتي قد تكون عائقاً أمام تطبيق هذه التقنية تجارياً. ثانياً، لم يتم اختبار الأغلفة على مجموعة متنوعة من اللحوم أو في ظروف تخزين مختلفة، مما قد يؤثر على فعالية الأغلفة في بيئات مختلفة. أخيراً، يمكن أن تكون هناك حاجة لمزيد من الدراسات حول تأثير هذه الأغلفة على جودة اللحوم من حيث الطعم والرائحة.
Questions related to the research
  1. ما هي المواد الأساسية المستخدمة في إنتاج أغلفة الكيتوزان المدعمة بالكينونات؟

    المواد الأساسية هي مخلّفات قشور القريدس لاستخلاص الكيتوزان ومخلفات معاصر الزيتون لاستخلاص الفينولات.

  2. ما هو الإنزيم المستخدم في عملية الربط الإنزيمي للفينولات بالكيتوزان؟

    الإنزيم المستخدم هو إنزيم اللاكاز.

  3. ما هي الفائدة الرئيسية لاستخدام أغلفة الكيتوزان المدعمة بالكينونات؟

    الفائدة الرئيسية هي حماية اللحوم الطازجة من الميكروبات الممرضة، مما يطيل مدة حفظها.

  4. ما هي النتائج التي توصلت إليها الدراسة بشأن فعالية الجفت مقارنة بالبيرين في استخلاص الفينولات؟

    أظهرت النتائج أن الجفت كان أكثر فعالية في استخلاص الفينولات مقارنة بالبيرين.


References used
Afify, A. S., M. A. Mahmoud, H. A. Emara and A. I. Khadega. 2009. Phenolic compounds and COD removal from olive mill wastewater by chemical and biological procedures. Australian journal of basic and applied sciences. 3(2):1087-1095
Ahmed, J and S. K. Varshney. 2011. Polylactides Chemistry, Properties and green packaging technology. International journal of food properties. 14:37–58
Andrade, S.M.B., R. Ladchumandasivam, B. G. Rocha., D. D. Belarmino and A. O. Galvao. 2012. The use of exoskeletons of shrimp (litopenaeus vanammei) and crab (ucides cordatus) for the extraction of chitosan and production of nanomembrane. Materials sciences and applications. 3: 495– 508
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