The microbiota of eight species of dehydrated edible seaweeds from North West Spain
Abstract The microbiota of eight species ( Chondrus crispus , Himanthalia elongata , Laminaria ochroleuca , Palmaria palmata , Porphyra umbilicalis , Saccharina latissima , Ulva lactuca and Undaria pinnatifida ) of edible seaweeds collected in North West Spain, marketed as dehydrated product, was quantitatively determined on nine solid media. Representative colonies were selected from solid culture media. The isolated microorganisms were identified by means of morphological characteristics, 16S rDNA sequencing and biochemical tests. U. pinnatifida was the seaweed species showing the most abundant microbial population, with counts on Marine agar up to 7.7 log cfu/g in individual samples and 5.0 log cfu/g as the mean value, and counts of coliforms up to 4.6 log cfu/g in individual samples and 2.4 log cfu/g as the mean value. The 225 identified bacterial isolates belonged to 11 families, 27 genera and 56 species. Bacillaceae was the family accounting for the highest number of isolates (111) followed by Enterobacteriaceae (60), Bacillales Family XII Incertae Sedis (20), Planococcaceae (11), Moraxellaceae (7), Paenibacillaceae (5) and Pseudomonadaceae (5). Bacterial species showing the highest occurrence in dehydrated seaweeds were Bacillus megaterium , B. licheniformis , Pantoea sp. and termoresistant Pantoea sp. Four of the Bacillus species isolated from dehydrated seaweeds ( B. cereus , B. licheniformis , B. pumilus and B. subtilis ) are among those containing strains considered to be foodborne pathogens and nine of the isolated non-Bacillales bacterial species have been reported to contain human opportunistic pathogenic strains. Highlights The microbiota of eight species of dehydrated edible seaweeds was investigated. Counts on Marine agar up to 7.7 log cfu/g were recorded in individual samples. 225 identified bacterial isolates belonged to 11 families, 27 genera and 56 species. B. megaterium , B. licheniformis and Pantoea sp. showed the highest occurrence. Bacterial strains belonging to 13 species of public health relevance were detected.
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기