Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium
Fishbones contain significant amounts of plant nutrients. Fish residues may be preserved by acidification to pH < 4, which may affect the chemical extractability, and the plant availability of nutrients when applied as fertilisers. Grinded bone material from cod (Gadus morhua) heads was mixed wit...
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ftunivmob:oai:nmbu.brage.unit.no:11250/3038057 2023-05-15T16:19:21+02:00 Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium Løes, Anne-Kristin Ahlin, Johan Petter Ahuja, Ishita Krogstad, Tore Smevoll, Ståle Waag, Hanne 2022-05-03T12:28:13Z application/pdf https://hdl.handle.net/11250/3038057 https://doi.org/10.1007/s12649-022-01744-7 eng eng Waste and Biomass Valorization. 2022, 13 3547-3559. urn:issn:1877-2641 https://hdl.handle.net/11250/3038057 https://doi.org/10.1007/s12649-022-01744-7 cristin:2020931 3547-3559 13 Waste and Biomass Valorization Peer reviewed Journal article 2022 ftunivmob https://doi.org/10.1007/s12649-022-01744-7 2022-12-21T23:44:10Z Fishbones contain significant amounts of plant nutrients. Fish residues may be preserved by acidification to pH < 4, which may affect the chemical extractability, and the plant availability of nutrients when applied as fertilisers. Grinded bone material from cod (Gadus morhua) heads was mixed with formic acid to investigate if this would increase the concentrations of ammonium lactate–acetate (AL)-extractable nutrients. Two degrees of fineness of fishbones (coarse 2–4 mm; fine < 0.71 mm) were compared at pH 3.0 and 4.0 plus a water control in a laboratory study over 55 days. Samples for measurement of AL-extractable P, Ca, Mg and K were taken on day 2, 15, 34 and 55. Whereas more formic acid and thereby lower pH clearly increased the concentrations of AL-extractable calcium (Ca-AL) and magnesium (Mg-AL), AL-extractable phosphorus (P-AL) was only significantly increased in finely grinded bones at pH 3. After 34 days at pH 3, 6% of the total content of P was extracted by AL in fine fishbones. In the water control, about 1% of the P was extracted, possibly from phospholipids. This P-AL concentration was well above P-AL extracted from acidified coarse fishbones (pH 3 and 4) and from fine fishbones acidified to pH 4. With acidification, about 30% of total Ca and 100% of total Mg were extracted by AL, and the Ca-AL and Mg-AL concentrations were closely correlated. A possible reason for lower P-AL in coarse fishbones at pH 3 and 4, and in fine fishbones at pH 4 than in water controls may be a precipitation of apatite from phospholipids and dissolved calcium. publishedVersion Article in Journal/Newspaper Gadus morhua Open archive Norwegian University of Life Sciences: Brage NMBU Waste and Biomass Valorization 13 8 3547 3559 |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
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ftunivmob |
language |
English |
description |
Fishbones contain significant amounts of plant nutrients. Fish residues may be preserved by acidification to pH < 4, which may affect the chemical extractability, and the plant availability of nutrients when applied as fertilisers. Grinded bone material from cod (Gadus morhua) heads was mixed with formic acid to investigate if this would increase the concentrations of ammonium lactate–acetate (AL)-extractable nutrients. Two degrees of fineness of fishbones (coarse 2–4 mm; fine < 0.71 mm) were compared at pH 3.0 and 4.0 plus a water control in a laboratory study over 55 days. Samples for measurement of AL-extractable P, Ca, Mg and K were taken on day 2, 15, 34 and 55. Whereas more formic acid and thereby lower pH clearly increased the concentrations of AL-extractable calcium (Ca-AL) and magnesium (Mg-AL), AL-extractable phosphorus (P-AL) was only significantly increased in finely grinded bones at pH 3. After 34 days at pH 3, 6% of the total content of P was extracted by AL in fine fishbones. In the water control, about 1% of the P was extracted, possibly from phospholipids. This P-AL concentration was well above P-AL extracted from acidified coarse fishbones (pH 3 and 4) and from fine fishbones acidified to pH 4. With acidification, about 30% of total Ca and 100% of total Mg were extracted by AL, and the Ca-AL and Mg-AL concentrations were closely correlated. A possible reason for lower P-AL in coarse fishbones at pH 3 and 4, and in fine fishbones at pH 4 than in water controls may be a precipitation of apatite from phospholipids and dissolved calcium. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Løes, Anne-Kristin Ahlin, Johan Petter Ahuja, Ishita Krogstad, Tore Smevoll, Ståle Waag, Hanne |
spellingShingle |
Løes, Anne-Kristin Ahlin, Johan Petter Ahuja, Ishita Krogstad, Tore Smevoll, Ståle Waag, Hanne Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
author_facet |
Løes, Anne-Kristin Ahlin, Johan Petter Ahuja, Ishita Krogstad, Tore Smevoll, Ståle Waag, Hanne |
author_sort |
Løes, Anne-Kristin |
title |
Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
title_short |
Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
title_full |
Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
title_fullStr |
Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
title_full_unstemmed |
Effects of Formic Acid Preservation of Fishbones on the Extractability of Ammonium Lactate–Acetate Soluble Calcium, Phosphorus, Magnesium, and Potassium |
title_sort |
effects of formic acid preservation of fishbones on the extractability of ammonium lactate–acetate soluble calcium, phosphorus, magnesium, and potassium |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3038057 https://doi.org/10.1007/s12649-022-01744-7 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
3547-3559 13 Waste and Biomass Valorization |
op_relation |
Waste and Biomass Valorization. 2022, 13 3547-3559. urn:issn:1877-2641 https://hdl.handle.net/11250/3038057 https://doi.org/10.1007/s12649-022-01744-7 cristin:2020931 |
op_doi |
https://doi.org/10.1007/s12649-022-01744-7 |
container_title |
Waste and Biomass Valorization |
container_volume |
13 |
container_issue |
8 |
container_start_page |
3547 |
op_container_end_page |
3559 |
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1766005725500276736 |