Inhibition of Listeria in cold-smoked salmon using liquid smoke and isoeugenol

Thesis (M.S.) University of Alaska Fairbanks, 2000Listeria monocytogenes is a foodborne pathogen, ubiquitous in nature and sometimes found in seafood. Cold-smoked salmon products have few barriers to inhibit pathogen growth. This study investigated the antilisterial effects of liquid smoke and the phenolic compound isoeugenol. Five commercial liquid smokes were tested 'in vitro' and the most inhibitory to Listeria monocytogenes ATCC 19115 and L. innocua ATCC 33090 was Charsol Supreme. Chum salmon samples (100-g each) were dipped for 15 seconds at varying concentrations of liquid smoke, processed, and analyzed for L. innocua. Liquid smoke concentrations of 60-100% reduced L. innocua by 3-logs in the final product. Dwell times of 15 seconds to 5 minutes using 60% liquid smoke gradually decreased listerial survival. Isoeugenol was antilisterial 'in vitro, ' but lacked synergism with liquid smoke in cold-smoked salmon. Charsol Supreme formed an antilisterial barrier in cold-smoked salmon, and may be a useful application to commercial products

Students' production of curricular knowledge: perspectives on empowerment in financial capability education

The aim of this article is to extend our understanding of the relationship between knowledge of personal finance and empowerment. The analysis is based on interview data obtained as part of a longitudinal study of students, aged 16–19, who completed a financial capability course in the UK. The analysis presents a set of cultural models or storylines implied in student discourse about what it means to be financially capable. Possibilities for empowerment are interpreted from these cultural models with implications for how we define the boundaries of financial capability education. References to empowerment in terms of having a voice and feeling confident to make consumer decisions and to advise others in matters of finance were common across the interview data. However, a form of knowledge and empowerment that positioned students not as aware consumers but as individuals with a critical awareness of financial and economic systems was less evident

Genome Sequence of the Brown Norway Rat Yields Insights Into Mammalian Evolution

The laboratory rat (Rattus norvegicus) is an indispensable tool in experimental medicine and drug development, having made inestimable contributions to human health. We report here the genome sequence of the Brown Norway (BN) rat strain. The sequence represents a high-quality 'draft' covering over 90% of the genome. The BN rat sequence is the third complete mammalian genome to be deciphered, and three-way comparisons with the human and mouse genomes resolve details of mammalian evolution. This first comprehensive analysis includes genes and proteins and their relation to human disease, repeated sequences, comparative genome-wide studies of mammalian orthologous chromosomal regions and rearrangement breakpoints, reconstruction of ancestral karyotypes and the events leading to existing species, rates of variation, and lineage-specific and lineage-independent evolutionary events such as expansion of gene families, orthology relations and protein evolution

Forty years of IVF

This monograph, written by the pioneers of IVF and reproductive medicine, celebrates the history, achievements, and medical advancements made over the last 40 years in this rapidly growing field