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Author (up) Cahoon, L.B.; Halkides, C.J.; Song, B.; Williams, C.M.; Dubay, G.R.; Fries, A.S.; Farmer, J.; Fridrich, W.; Brookshire, C. doi  openurl
  Title Swine waste as a source of natural products: A carotenoid antioxidant Type Journal Article
  Year 2012 Publication Agricultural Sciences Abbreviated Journal  
  Volume 3 Issue 6 Pages 806-815  
  Keywords Swine Waste; Purple Phototrophic Bacteria; Carotenoids; Spirilloxanthin  
  Abstract Development of Environmentally Superior Tech- nologies for swine waste management has fo- cused on extraction of products with relatively low unit values. Analyses of the bacterial com- position of swine waste lagoon samples con- firmed the presence of several purple non-sulfur bacteria (PNSB) species known to produce a variety of carotenoids. We examined a carote- noid naturally abundant in North Carolina swine waste lagoons dominated by PNSB. Analytical methods including high performance liquid chromatography (HPLC), mass spectrometry, and nuclear magnetic resonance (NMR) con- firmed the identity of the dominant carotenoid as spirilloxanthin, C42H60O2, with 13 conjugated double bonds. This structure confers antioxi- dant properties as good as those of carotenoids currently marketed as antioxidants. Visual esti- mates of the “redness” of swine waste lagoon liquids were highly correlated with carotenoid content. Spirilloxanthin concentrations in a la- goon with a strong PNSB bloom were approxi- mately 0.5 grams·m−3. These results support further investigations into the potential for ex- tracting commercially valuable natural products from swine waste lagoons.  
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  Publisher SciRes Place of Publication Editor  
  Language English Summary Language Original Title  
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  Call Number UMCES @ ajones @ Serial 4292  
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Permanent link to this record:  http://ian.umces.edu/literature/show.php?record=4292
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