Skip to main content

Irradiation and Postirradiation Storage at 2 ± 2°C of Tilapia (Tilapia nilotica × T. aurea) and Spanish Mackerel (Scomberomorus commerson): Sensory and Microbial Assessment

The full text article is temporarily unavailable.

We apologise for the inconvenience. Please try again later.

Abstract:

Tilapia (low-fat farm fish, Tilapia nilotica × T. aurea) and Spanish mackerel (high-fat seawater fish, Scomberomorus commerson) were subjected to gamma irradiation doses of 1.5, 3.0, 4.5, 6.0, and 10.0 kGy by using a semicommercial gamma irradiator. The irradiated and unirradiated (controls) fish were stored at 2 ± 2°C and samples were drawn at day 0, 4, 8, 12, 16, and 20 for sensory evaluation and microbiological analysis. Doses of 3.0 and/or 4.5 kGy extended the sensory acceptability (appearance, odor, texture, taste) and the microbial quality (total count and coliforms) by 8 days compared to the unirradiated controls. Hydrogen sulfide-producing bacteria were low in both types of fish and a dose of 1.5 kGy kept this flora at low levels throughout the storage period. Moreover, this dose level was also sufficient to eliminate Salmonella spp. from both fish. Yersinia and Campylobacter species were effectively eliminated by doses of 1.5 and 3.0 kGy. Doses of 6.0 and 10.0 kGy caused a reduction in psychrotrophic counts but were detrimental to the quality of both species of fish.

Keywords: FISH; GAMMA IRRADIATION; MICROBIAL QUALITY; SENSORY EVALUATION; SPANISH MACKEREL; TILAPIA

Document Type: Research Article

Affiliations: 1: Department of Food Science, College of Agriculture, King Saud University, Riyadh, 11451, Saudi Arabia 2: King Faisal Specialist Hospital and Research Center, Riyadh, 11451, Saudi Arabia

Publication date:

  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more