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A study of molds and yeasts associated with Thelah fish Scomberoides commersonianus dried by solar dryer and by sun light during different storage periods | ||
| Journal of Basrah Researches (Sciences) | ||
| Article 1, Volume 37, Issue 2, 2011, Pages 89-103 PDF (0 K) | ||
| Authors | ||
| Yehya A. Salih; Sabah M. H. Al-Shatty; Nawal K. Z. Al- Fadhly | ||
| Abstract | ||
| This study was conducted to isolate and identify the molds and yeasts associated with Thelah fish Scomberoides commersonianus (Forskal,1775) which dried in laboratory using solar dryer and compared with sun dried fish which obtained from the local market in Basrah during 6 months storage periods at laboratory temperature (25±2)˚C from Jan.2007 to May 2008. The effects of temperature and pH on the molds were also studied. The following finding were obtained : Nine species of molds were isolated from dried Thelah fish, eight of them related to the genus Aspergillus except one species which related to the genus Penicillium .There were significant differences at (P>0.05) for means logarithmic numbers of molds in dried Thelah fish . A.niger had given the highest mean for logarithmic numbers of molds. Three types of yeasts were isolated and identified as: Candida albicans , C. catenuiata and Rhodotorulla sp. The first one gave the highest mean. From the other hand the number of molds and yeasts in the samples directly dried by sun light were found to be more than the solar dryer samples within the progress of storage periods up to 6 months. The study also showed that the means of radial growth of molds increased with increasing of temperature degrees up to 35 ˚C , while they decreased with increasing of pH values up to 4.5. The statically analysis results revealed significant differences (P>0.05) among the means of molds radial growth at all tested temperature degrees and pH values. | ||
| Keywords | ||
| Molds; Yeasts; Drying; Thelah fish; storage period and Aspergillus spp; Aspergillus spp | ||
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