Phytic acid content and digestibility of coconut residues derived-proteins after solid-state fermentation by Aspergillus awamori
The growing industry of aquaculture is in demand of alternative protein sources as fish feeds. An adequate amount of digestible protein and the presence of anti-nutritional such as phytic acid factors are limiting factors in feed formulations. One alternative source of protein for fish feeds is fe...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2020
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| Online Access: | http://journalarticle.ukm.my/17231/1/49_04_16.pdf http://journalarticle.ukm.my/17231/ http://www.mabjournal.com/index.php?option=com_content&view=article&id=1070&catid=59:current-view&Itemid=56 |
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| Summary: | The growing industry of aquaculture is in demand of alternative protein sources as fish feeds. An adequate amount of digestible
protein and the presence of anti-nutritional such as phytic acid factors are limiting factors in feed formulations. One alternative
source of protein for fish feeds is fermented coconut residues. However, the phytic acid content, an anti-nutrient compound
produced during the bioconversion or fermentation process of agriculture waste has not yet been determined. Therefore, the
objective of the present study was to determine the phytic acid content and protein digestibility of coconut residues after
solid-state fermentation (SSF) by Aspergillus awamori. Samples from three optimized fermentation conditions were analyzed
for soluble proteins, phytic acid contents, and in-vitro digestibility activity by trypsin and pepsin. Results showed that phytic
acid content in all samples were lower than 0.1 mg/g dry wt. of the sample after seven days of fermentation. The protein
digestibility by trypsin (ranging from 36.54 ± 4.22 to 43.22 ± 2.46%) was higher than pepsin, where it fell within the
percentage required for fish feed formulation. The findings suggested that fermented coconut residues are a highly potential
alternative source of protein for fish feed formulation. |
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