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Preliminary investigation on the extension of shelf-life of boiled Chub mackerel by irradiation

Abstract

The influence of irradiation on the extension of shelf-life of boiled Chub mackerel stored at room temperature (25-30{sup 0}C) was investigated. It was found that boiled Chub mackerel irradiated at 0.1, 0.2, or 0.3 Mrad could be kept with good organoleptic properties at room temperature for 5, 8, and 11 days respectively; while the unirradiated sample could be kept for only 2 days. Boiled Chub mackerel used in this study was found to be heavily contaminated with microorganisms. Irradiation at doses mentioned caused reduction of more than 99% of bacteria. Bacillus and Acinetobacter were found to predominate in the irradiated boiled mackerel. The predominant flora in unirradiated boiled mackerel included Micrococcus, Staphylococcus, Bacillus, Acinetobacter, and Proteus. E. coli was always detected in unirradiated samples and was occasionally detected only in samples irradiated at 0.1 Mrad. Trimethylamine nitrogen (TMA-N) content, total volatile basic nitrogen (TVB-N) content, and total bacterial count (TBC) were used as indices of decomposition of both irradiated and unirradiated samples. TMA-N and TBC were found to be good indices of quality of only unirradiated boiled Chub mackerel, whereas TVB-N was found to be a good index of quality of both irradiated and unirradiated samples.
Publication Date:
Dec 31, 1970
Product Type:
Technical Report
Report Number:
THAI-AEC-38
Reference Number:
SCA: 553004; PA: AIX-25:055170; EDB-94:126101; ERA-19:031092; SN: 94001228655
Resource Relation:
Other Information: PBD: 1970
Subject:
60 APPLIED LIFE SCIENCES; FISH PRODUCTS; RADURIZATION; STORAGE LIFE; EXPERIMENTAL DATA; 553004; FOOD PROTECTION AND PRESERVATION
OSTI ID:
10178984
Research Organizations:
Office of Atomic Energy for Peace, Bangkok (Thailand)
Country of Origin:
Thailand
Language:
Thai
Other Identifying Numbers:
Other: ON: DE94633916; TRN: TH9400046055170
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
23 p.
Announcement Date:
Jul 07, 2005

Citation Formats

Loaharanu, P, Prombubesara, C, and Songprasertchai, S. Preliminary investigation on the extension of shelf-life of boiled Chub mackerel by irradiation. Thailand: N. p., 1970. Web.
Loaharanu, P, Prombubesara, C, & Songprasertchai, S. Preliminary investigation on the extension of shelf-life of boiled Chub mackerel by irradiation. Thailand.
Loaharanu, P, Prombubesara, C, and Songprasertchai, S. 1970. "Preliminary investigation on the extension of shelf-life of boiled Chub mackerel by irradiation." Thailand.
@misc{etde_10178984,
title = {Preliminary investigation on the extension of shelf-life of boiled Chub mackerel by irradiation}
author = {Loaharanu, P, Prombubesara, C, and Songprasertchai, S}
abstractNote = {The influence of irradiation on the extension of shelf-life of boiled Chub mackerel stored at room temperature (25-30{sup 0}C) was investigated. It was found that boiled Chub mackerel irradiated at 0.1, 0.2, or 0.3 Mrad could be kept with good organoleptic properties at room temperature for 5, 8, and 11 days respectively; while the unirradiated sample could be kept for only 2 days. Boiled Chub mackerel used in this study was found to be heavily contaminated with microorganisms. Irradiation at doses mentioned caused reduction of more than 99% of bacteria. Bacillus and Acinetobacter were found to predominate in the irradiated boiled mackerel. The predominant flora in unirradiated boiled mackerel included Micrococcus, Staphylococcus, Bacillus, Acinetobacter, and Proteus. E. coli was always detected in unirradiated samples and was occasionally detected only in samples irradiated at 0.1 Mrad. Trimethylamine nitrogen (TMA-N) content, total volatile basic nitrogen (TVB-N) content, and total bacterial count (TBC) were used as indices of decomposition of both irradiated and unirradiated samples. TMA-N and TBC were found to be good indices of quality of only unirradiated boiled Chub mackerel, whereas TVB-N was found to be a good index of quality of both irradiated and unirradiated samples.}
place = {Thailand}
year = {1970}
month = {Dec}
}