Biochemical Characterization of Thermostable Acrylamide Amidohydrolase from Aspergillus fumigatus with Potential Activity for Acrylamide Degradation in Various Food Products

Faculty Science Year: 2024
Type of Publication: ZU Hosted Pages:
Authors:
Journal: Current Microbiology Springer Volume:
Keywords : Biochemical Characterization , Thermostable Acrylamide Amidohydrolase from Aspergillus    
Abstract:
Acrylamide is the major by-product of the Maillard reactions in foods with the overheating processes of L-asparagine-rich foods with reducing sugars that usually allied with neurotoxicity and carcinogenicity. Several approaches have been used to prevent the formation of acrylamide, however, degrading the already formed acrylamide in foods remains unequivocal. Acrylamide hydrolyzing enzyme “amidohydrolase” is one of the most promising enzymes for acrylamide degradation in foods. So, amidohydrolase “amidase” from thermotolerant Aspergillus fumigatus EFBL was purified to their electrophoretic homogeneity by gel-filtration and ion-exchange chromatography, with overall purification folds 2.8 and yield 9.43%. The apparent molecular subunit structure of the purified A. fumigatus amidase was 50 kDa, with highest activity at reaction temperature of 40 °C and pH of 7.5 The enzyme displayed a significant thermal stability as revealed from the value of T1/2 (13.37 h), and thermal denaturation rate (Kr 0.832 × 10– 3 min) at 50 °C, with metalloproteinic identity. The purified enzyme had a significant activity for acrylamide degradation in various food products such as meat, cookies, potato chips, and bread as revealed from the HPLC analysis and LC–MS analysis. So, with the purified amidase, the acrylamide in the food products was degraded by about 95% to acrylic acid, ensuring the possibility of using this enzyme in abolishing the toxic acrylamide in the foods products. This is the first report exploring the potency of A. fumigatus amidase for an actual degradation of acrylamide in foods efficiently. Further biochemical analyses are ongoing to assess the affinity of this enzyme for selective hydrolyses of acrylamide in foods, without affecting the beneficial stereochemical related compounds.
   
     
 
       

Author Related Publications

  • Ashraf Sabry Abdelfattah alsaied, "Phytochemical fingerprinting of phytotoxins as a cutting-edge approach for unveiling nature’s secrets in forensic science", Springer Nature, 2025 More
  • Ashraf Sabry Abdelfattah alsaied, "Characterization of Homocysteine γ-Lyase from Submerged and Solid Cultures of Aspergillus fumigatus ASH (JX006238)", Korean Society of Microbiology and Biotechnology, 2013 More
  • Ashraf Sabry Abdelfattah alsaied, "Purification and Characterization of LAmino Acid Oxidase from the SolidState Grown Cultures of Aspergillus oryzae ASH1", Pleiades Publishing, LTD, 2013 More
  • Ashraf Sabry Abdelfattah alsaied, "Microbial L-methioninase: production, molecular characterization, and therapeutic applications", Springer-Verlag 2010, 2010 More
  • Ashraf Sabry Abdelfattah alsaied, "Characterization and immobilization of purified Aspergillus flavipes L-methioninase: continuous production of methanethiol", The Society of Applied Microbiology, 2011 More

Department Related Publications

  • Tamer Aly Elsayed Sweilem, "تأثير البرولين و حامض السالسليك و قش الأرز على نمو و انتاجية نبات الفول البلدي المنزرع تحت ظروف الجفاف", كلية العلوم - جامعة الزقازيق, 2013 More
  • Tamer Aly Elsayed Sweilem, "تغيرات الرقم الهيدروجينى (pH) للتربة باستخدام محلفات القش المحروقة", كلية الزراعة - جامعة الزقازيق, 2008 More
  • Yasser Hussein Ahmed Hussein, "In vivo Influence of Auxin-like and Fusilade Herbicides on the Essential Oils, Protein and Growth of Marjoram (Origanum majorana L", acta zhengzhou university- marsalland press USA, 2013 More
  • Khaled AbdelAal Ali AbdelAal, "إنتاج إنزيم الكيتوزينيز من بعض الفطريات دراسة ظروف التخمر المثلي لإنتاج إنزيم الكيتوزينيز من اسبرجيلس اورناتس", Faculty of Science-Zagazig University, 2007 More
  • Mohamed Farouk Ibrahim Aly, "Biodeterioration of binding media in tempera paintings by Streptomyces isolated from some ancient Egyptian paintings", African Journal of Biotechnology, 2013 More
Tweet