Microencapsulated enzymes from Aspergillus oryzae accelerate cheddar cheese ripening and enrich biologically active peptide profile
Article
Article Title | Microencapsulated enzymes from Aspergillus oryzae accelerate cheddar cheese ripening and enrich biologically active peptide profile |
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ERA Journal ID | 5461 |
Article Category | Article |
Authors | Seneweera, Saman (Author) and Kailasapathy, Kasipathy (Author) |
Journal Title | Australian Journal of Dairy Technology |
Journal Citation | 65 (3), pp. 174-177 |
Number of Pages | 4 |
Year | 2010 |
Place of Publication | Melbourne, Australia |
ISSN | 0004-9433 |
Web Address (URL) | https://www.diaa.asn.au/publications/australian-journal-of-dairy-technology/articles/article/australian-journal-of-dairy-technology/23-adjt-articles/2381-microencapsulated-enzymes-from-aspergillus-oryzae-accelerate-cheddar-cheese-ripening-and-enrich-biolo |
Abstract | The delivery of calcium-alginate encapsulated peptidase, Flavourzyme from Aspergillus oryzae to enhance the proteolytic maturity of cheddar cheese was investigated. Cheeses with and without encapsulated enzymes were prepared and stored at 9°C for assessment of proteolytic maturity during ripening (0, 1 and 10 weeks). SDS-PAGE analysis of water-insoluble fractions clearly demonstrated that hydrolysis of casein after three months of maturity was significantly increased in the experimental cheese, in particular, α and κ casein (ON) were largely degraded. The water-soluble fractions were subjected to RP-HPLC on C18 column for analysis of peptide profile. A large number of low molecular weight peptides were identified in experimental cheeses compared to the control cheese, and some of the peptides were unique to the experimental cheese and accumulated during ripening. Six of the identified peptides were purified on the same column using a binary gradient. N-terminal amino acid sequence analysis of identified new peptides were (P1:Leu-Thr-Glu; P3:Asp-Val-Pro-Ser- Glu) and relatively abundant stable peptides (P2, P4: Arg-Pro-Lys- His-Pro-Ile; P5:Arg-Pro-Lys-His-Pro-Ile-Lys and P6) and they mainly originated from αs1-ON and β-CN. Three of the identified peptides (P1, P2, P3 and P4) are known to be biologically active, and P1 and P3 were only present in the experimental cheese, suggesting that the encapsulated fungal peptidase derived from Aspergillus oryzae not only accelerated cheese ripening but has the potential to enrich the bioactive peptide profile in cheddar cheese. |
Keywords | cheese manufacturing; maturation; enzymes; casein; peptides |
ANZSRC Field of Research 2020 | 300602. Food chemistry and food sensory science |
310601. Biocatalysis and enzyme technology | |
340407. Proteins and peptides | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Melbourne |
University of Western Sydney | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q273x/microencapsulated-enzymes-from-aspergillus-oryzae-accelerate-cheddar-cheese-ripening-and-enrich-biologically-active-peptide-profile
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