A study on the improvement of microbiological quality of bromelain by gamma-irradiation
Creators
- 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 formFiles
34043720.pdf
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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;