Journal article
Identification of bioactives from the red seaweed Asparagopsis taxiformis that promote antimethanogenic activity in vitro
Journal of Applied Phycology, Vol.28(5), pp.3117-3126
2016
Abstract
Asparagopsis taxiformis has potent antimethanogenic activity as a feed supplement at 2 % of organic matter in in vitro bioassays. This study identified the main bioactive natural products and their effects on fermentation using rumen fluid from Bos indicus steers. Polar through to non-polar extracts (water, methanol, dichloromethane and hexane) were tested. The dichloromethane extract was most active, reducing methane production by 79 %. Bromoform was the most abundant natural product in the biomass of Asparagopsis (1723 μg g-1 dry weight [DW] biomass), followed by dibromochloromethane (15.8 μg g-1 DW), bromochloroacetic acid (9.8 μg g-1 DW) and dibromoacetic acid (0.9 μg g-1 DW). Bromoform and dibromochloromethane had the highest activity with concentrations ≥1 μM inhibiting methane production. However, only bromoform was present in sufficient quantities in the biomass at 2 % organic matter to elicit this effect. Importantly, the degradability of organic matter and volatile fatty acids were not affected at effective concentrations. © 2016, Springer Science+Business Media Dordrecht.
Details
- Title
- Identification of bioactives from the red seaweed Asparagopsis taxiformis that promote antimethanogenic activity in vitro
- Authors
- L Machado (Author) - James Cook UniversityM Magnusson (Author) - James Cook UniversityNicholas A Paul (Author) - James Cook UniversityR Kinley (Author) - James Cook UniversityR de Nys (Author) - James Cook UniversityN Tomkins (Author) - James Cook University
- Publication details
- Journal of Applied Phycology, Vol.28(5), pp.3117-3126
- Publisher
- Springer Netherlands
- Date published
- 2016
- DOI
- 10.1007/s10811-016-0830-7
- ISSN
- 0921-8971
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99451062502621
- Output Type
- Journal article
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- Domestic collaboration
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- Marine & Freshwater Biology
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