Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis

Hidayati Syamimi Mohd Noor, Abd. Salam Babji, Seng Joe Lim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Edible bird nest (EBN) is a powerful and nutritious food usually consumed by the Chinese Community and it is considered among the most expensive animal products which are made up by salivation of swiftlets (Aerodramus fuciphagus). The other 5% to 10% are made up of foreign matters such as feathers, faecal matter and dirt. The EBN is graded based on its aesthetics as well as its cleaning processes. The aim of this study were to determine and compare EBN of different grades (A, B, C, D) in terms of proximate composition and amino acid profile, and next to enzymatically hydrolyse and determine the degree of hydrolysis (DH) and the recovery percentage of EBN hydrolysates. The enzymatic hydrolysis were performed as an alternative cleaning process of the various grades of EBN, where the glycoproteins were hydrolysed to glycopeptides, making them soluble and leaving behind other insoluble impurities. The results in this study showed that EBN contained high crude protein content: 60.59% (EBNA), 59.50% (EBNB), 54.29% (EBNC) and 56.57% (EBND). Lower grade EBNs (EBNC and EBND) has much higher ash content, i.e. impurities, compared to higher grade EBNs (EBNA and EBNB). In terms of amino acid profile, EBND showed the highest total amino acids compared to EBNA, EBNB and EBNC, with serine and aspartic acid being the main amino acids. Treating the EBN with alcalase for 1.0-4.0 hours produced hydrolysates with different degree of hydrolysis (DH), ranging from 10.83 %DH (EBNA) to 13.79 %DH (EBNC). The recovery of EBN after enzymatic hydrolysis range from 89 % (EBNB) to 99% (EBNA). Overall, results showed nutritional composition and amino acid profile of EBN of various grades were significantly different in its nutritional quality, while the enzymatic hydrolysis has successfully separated the impurities from the lower grades EBN.

Original languageEnglish
Title of host publication2017 UKM FST Postgraduate Colloquium
Subtitle of host publicationProceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium
PublisherAmerican Institute of Physics Inc.
Volume1940
ISBN (Electronic)9780735416321
DOIs
Publication statusPublished - 4 Apr 2018
Event2017 UKM FST Postgraduate Colloquium - Selangor, Malaysia
Duration: 12 Jul 201713 Jul 2017

Other

Other2017 UKM FST Postgraduate Colloquium
CountryMalaysia
CitySelangor
Period12/7/1713/7/17

Fingerprint

birds
hydrolysis
grade
amino acids
impurities
cleaning
acids
profiles
recovery
dirt
aspartic acid
ashes
food
animals
proteins

Keywords

  • amino acid composition
  • degree of hydrolysis
  • Edible bird nest (EBN)
  • Proximate analysis
  • Recovery of EBN

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Noor, H. S. M., Babji, A. S., & Lim, S. J. (2018). Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis. In 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium (Vol. 1940). [020088] American Institute of Physics Inc.. https://doi.org/10.1063/1.5028003

Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis. / Noor, Hidayati Syamimi Mohd; Babji, Abd. Salam; Lim, Seng Joe.

2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940 American Institute of Physics Inc., 2018. 020088.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Noor, HSM, Babji, AS & Lim, SJ 2018, Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis. in 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. vol. 1940, 020088, American Institute of Physics Inc., 2017 UKM FST Postgraduate Colloquium, Selangor, Malaysia, 12/7/17. https://doi.org/10.1063/1.5028003
Noor HSM, Babji AS, Lim SJ. Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis. In 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940. American Institute of Physics Inc. 2018. 020088 https://doi.org/10.1063/1.5028003
Noor, Hidayati Syamimi Mohd ; Babji, Abd. Salam ; Lim, Seng Joe. / Nutritional composition of different grades of edible bird's nest and its enzymatic hydrolysis. 2017 UKM FST Postgraduate Colloquium: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Vol. 1940 American Institute of Physics Inc., 2018.
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abstract = "Edible bird nest (EBN) is a powerful and nutritious food usually consumed by the Chinese Community and it is considered among the most expensive animal products which are made up by salivation of swiftlets (Aerodramus fuciphagus). The other 5{\%} to 10{\%} are made up of foreign matters such as feathers, faecal matter and dirt. The EBN is graded based on its aesthetics as well as its cleaning processes. The aim of this study were to determine and compare EBN of different grades (A, B, C, D) in terms of proximate composition and amino acid profile, and next to enzymatically hydrolyse and determine the degree of hydrolysis (DH) and the recovery percentage of EBN hydrolysates. The enzymatic hydrolysis were performed as an alternative cleaning process of the various grades of EBN, where the glycoproteins were hydrolysed to glycopeptides, making them soluble and leaving behind other insoluble impurities. The results in this study showed that EBN contained high crude protein content: 60.59{\%} (EBNA), 59.50{\%} (EBNB), 54.29{\%} (EBNC) and 56.57{\%} (EBND). Lower grade EBNs (EBNC and EBND) has much higher ash content, i.e. impurities, compared to higher grade EBNs (EBNA and EBNB). In terms of amino acid profile, EBND showed the highest total amino acids compared to EBNA, EBNB and EBNC, with serine and aspartic acid being the main amino acids. Treating the EBN with alcalase for 1.0-4.0 hours produced hydrolysates with different degree of hydrolysis (DH), ranging from 10.83 {\%}DH (EBNA) to 13.79 {\%}DH (EBNC). The recovery of EBN after enzymatic hydrolysis range from 89 {\%} (EBNB) to 99{\%} (EBNA). Overall, results showed nutritional composition and amino acid profile of EBN of various grades were significantly different in its nutritional quality, while the enzymatic hydrolysis has successfully separated the impurities from the lower grades EBN.",
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