Effects of gamma irradiation on microbiological quality, protein and amino acid profile of edible bird nest powder

Norrakiah Abdullah Sani, Ong Kuan Yee, Mohd. Khan Ayob, Muhamad Samudi Yasir, Abd. Salam Babji, Nazaruddin Ramli

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effect of gamma irradiation was determined on the microbiological quality and amino acid profile of edible bird nest (EBN) powder. Seven doses of irradiation were used: 0.0 (control), 1.0, 2.0, 5.0, 7.5, 10.0, 20.0 and 30.0 kGy. The total plate count (TPC) of EBN samples that were inhibited or had TPC < 100 colony forming units (CFU).g-1 at 20.0 kGy was determined. An irradiation dose of 5.0 kGy was required to reduce the coliform and Staphylococcus aureus counts to below 100 CFU.g-1 and the yeast and mold counts to below 1,000 CFU.g-1, while for Escherichia coli, 1.0 kGy was sufficient to inhibit or reduce the count to below 100 CFU.g-1. Salmonella spp. was not detected in any sample. A minimum irradiation dose of 20 kGy was required to sterilize the EBN powder samples most effectively. The pH and water activity values of the samples were in the ranges 8.34-8.90 and 0.621-0.674, respectively. The microbiological quality changes of irradiated samples were caused by the gamma irradiation alone. Gamma irradiation at doses as high as 10.0 and 20.0 kGy did not produce significant changes in the amino acid profiles of the EBN samples compared to the non-irradiated samples. Gamma irradiation improved the microbiological quality of the EBN samples without affecting their amino acid profiles.

Original languageEnglish
Pages (from-to)880-894
Number of pages15
JournalKasetsart Journal - Natural Science
Volume49
Issue number6
Publication statusPublished - 15 Nov 2015

Fingerprint

microbiological quality
Powders
gamma radiation
Birds
powders
Amino Acids
Stem Cells
amino acids
Proteins
proteins
sampling
irradiation
dosage
plate count
Salmonella
Staphylococcus aureus
Fungi
Yeasts
edible bird's nests
Escherichia coli

Keywords

  • Amino acid profile
  • Edible bird nest
  • Gamma irradiation
  • Microbiological quality
  • Protein

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Effects of gamma irradiation on microbiological quality, protein and amino acid profile of edible bird nest powder. / Abdullah Sani, Norrakiah; Yee, Ong Kuan; Ayob, Mohd. Khan; Yasir, Muhamad Samudi; Babji, Abd. Salam; Ramli, Nazaruddin.

In: Kasetsart Journal - Natural Science, Vol. 49, No. 6, 15.11.2015, p. 880-894.

Research output: Contribution to journalArticle

Abdullah Sani, Norrakiah ; Yee, Ong Kuan ; Ayob, Mohd. Khan ; Yasir, Muhamad Samudi ; Babji, Abd. Salam ; Ramli, Nazaruddin. / Effects of gamma irradiation on microbiological quality, protein and amino acid profile of edible bird nest powder. In: Kasetsart Journal - Natural Science. 2015 ; Vol. 49, No. 6. pp. 880-894.
@article{3427bb9e179f454da1e68be358379a26,
title = "Effects of gamma irradiation on microbiological quality, protein and amino acid profile of edible bird nest powder",
abstract = "The effect of gamma irradiation was determined on the microbiological quality and amino acid profile of edible bird nest (EBN) powder. Seven doses of irradiation were used: 0.0 (control), 1.0, 2.0, 5.0, 7.5, 10.0, 20.0 and 30.0 kGy. The total plate count (TPC) of EBN samples that were inhibited or had TPC < 100 colony forming units (CFU).g-1 at 20.0 kGy was determined. An irradiation dose of 5.0 kGy was required to reduce the coliform and Staphylococcus aureus counts to below 100 CFU.g-1 and the yeast and mold counts to below 1,000 CFU.g-1, while for Escherichia coli, 1.0 kGy was sufficient to inhibit or reduce the count to below 100 CFU.g-1. Salmonella spp. was not detected in any sample. A minimum irradiation dose of 20 kGy was required to sterilize the EBN powder samples most effectively. The pH and water activity values of the samples were in the ranges 8.34-8.90 and 0.621-0.674, respectively. The microbiological quality changes of irradiated samples were caused by the gamma irradiation alone. Gamma irradiation at doses as high as 10.0 and 20.0 kGy did not produce significant changes in the amino acid profiles of the EBN samples compared to the non-irradiated samples. Gamma irradiation improved the microbiological quality of the EBN samples without affecting their amino acid profiles.",
keywords = "Amino acid profile, Edible bird nest, Gamma irradiation, Microbiological quality, Protein",
author = "{Abdullah Sani}, Norrakiah and Yee, {Ong Kuan} and Ayob, {Mohd. Khan} and Yasir, {Muhamad Samudi} and Babji, {Abd. Salam} and Nazaruddin Ramli",
year = "2015",
month = "11",
day = "15",
language = "English",
volume = "49",
pages = "880--894",
journal = "Kasetsart Journal - Natural Science",
issn = "0075-5192",
publisher = "Kasetsart University",
number = "6",

}

TY - JOUR

T1 - Effects of gamma irradiation on microbiological quality, protein and amino acid profile of edible bird nest powder

AU - Abdullah Sani, Norrakiah

AU - Yee, Ong Kuan

AU - Ayob, Mohd. Khan

AU - Yasir, Muhamad Samudi

AU - Babji, Abd. Salam

AU - Ramli, Nazaruddin

PY - 2015/11/15

Y1 - 2015/11/15

N2 - The effect of gamma irradiation was determined on the microbiological quality and amino acid profile of edible bird nest (EBN) powder. Seven doses of irradiation were used: 0.0 (control), 1.0, 2.0, 5.0, 7.5, 10.0, 20.0 and 30.0 kGy. The total plate count (TPC) of EBN samples that were inhibited or had TPC < 100 colony forming units (CFU).g-1 at 20.0 kGy was determined. An irradiation dose of 5.0 kGy was required to reduce the coliform and Staphylococcus aureus counts to below 100 CFU.g-1 and the yeast and mold counts to below 1,000 CFU.g-1, while for Escherichia coli, 1.0 kGy was sufficient to inhibit or reduce the count to below 100 CFU.g-1. Salmonella spp. was not detected in any sample. A minimum irradiation dose of 20 kGy was required to sterilize the EBN powder samples most effectively. The pH and water activity values of the samples were in the ranges 8.34-8.90 and 0.621-0.674, respectively. The microbiological quality changes of irradiated samples were caused by the gamma irradiation alone. Gamma irradiation at doses as high as 10.0 and 20.0 kGy did not produce significant changes in the amino acid profiles of the EBN samples compared to the non-irradiated samples. Gamma irradiation improved the microbiological quality of the EBN samples without affecting their amino acid profiles.

AB - The effect of gamma irradiation was determined on the microbiological quality and amino acid profile of edible bird nest (EBN) powder. Seven doses of irradiation were used: 0.0 (control), 1.0, 2.0, 5.0, 7.5, 10.0, 20.0 and 30.0 kGy. The total plate count (TPC) of EBN samples that were inhibited or had TPC < 100 colony forming units (CFU).g-1 at 20.0 kGy was determined. An irradiation dose of 5.0 kGy was required to reduce the coliform and Staphylococcus aureus counts to below 100 CFU.g-1 and the yeast and mold counts to below 1,000 CFU.g-1, while for Escherichia coli, 1.0 kGy was sufficient to inhibit or reduce the count to below 100 CFU.g-1. Salmonella spp. was not detected in any sample. A minimum irradiation dose of 20 kGy was required to sterilize the EBN powder samples most effectively. The pH and water activity values of the samples were in the ranges 8.34-8.90 and 0.621-0.674, respectively. The microbiological quality changes of irradiated samples were caused by the gamma irradiation alone. Gamma irradiation at doses as high as 10.0 and 20.0 kGy did not produce significant changes in the amino acid profiles of the EBN samples compared to the non-irradiated samples. Gamma irradiation improved the microbiological quality of the EBN samples without affecting their amino acid profiles.

KW - Amino acid profile

KW - Edible bird nest

KW - Gamma irradiation

KW - Microbiological quality

KW - Protein

UR - http://www.scopus.com/inward/record.url?scp=84988884811&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988884811&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84988884811

VL - 49

SP - 880

EP - 894

JO - Kasetsart Journal - Natural Science

JF - Kasetsart Journal - Natural Science

SN - 0075-5192

IS - 6

ER -