Published 2000 | Version v1
Report Open

A study on the improvement of microbiological quality of bromelain by gamma-irradiation

  • 1. Biological Science Division, Office of Atomic Energy of Peace, Bangkok (Thailand)

Description

Sixty bromelain samples produced from Great Food ( Biochem) company and Hong Mao Biochemical company were investigated for microbiological quality. It was found that bromelain quality of both companies did not meet the microbiological standard of the buyers. The total viable microbial counts found in bromelain samples were higher than 5,000 cells per gram. Besides, microorganisms used as hygenic indicator of foods such as coliforms and Escherichia coli were found in some samples. The irradiation effect at the doses of 2, 4, 6, 8 and 10 kGy on microbiological quality and enzyme activity of bromelain were also studied. It was found that irradiation with 4-6 kGy resulted in 1-4 log cycles and 2-5 log cycles reduction of the total viable microbial counts of Great Food and Hong Mao samples, respectively. No coliforms, E. coli. Salmonella and staph. aureus were found in any irradiated sample at the dose of 6 kGy. In addition, irradiation with 6 kGy resulted in average percentage lost of enzyme activity of Great Food and Hong Mao samples were 10.4 and 6.2, respectively. It could be concluded that irradiation with 6 kGy appeared to sufficient for the improvement of microbiological quality of bromelain

Availability note (English)

Available from INIS in electronic form

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Additional details

Publishing Information

ISBN
974-7400-54-5
Imprint Pagination
32 p.
Report number
OAEP--1-196

INIS

Country of Publication
Thailand
Country of Input or Organization
Thailand
INIS RN
34043720
Subject category
S60: APPLIED LIFE SCIENCES;
Resource subtype / Literary indicator
Numerical Data
Quality check status
Yes
Descriptors DEI
DOSE RATES; EXPERIMENTAL DATA; FRUITS; IRRADIATION; MICROORGANISMS;
Descriptors DEC
DATA; FOOD; INFORMATION; NUMERICAL DATA;