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Bioconversion of Ca...
Bioconversion of Carrot Pomace to Value-Added Products : Rhizopus delemar Fungal Biomass and Cellulose
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- Mousavi, Najmeh (author)
- Univ Borås, Swedish Ctr Resource Recovery, S-50190 Borås, Sweden.,Swedish Center for Resource Recovery
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- Parchami, Mohsen (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi
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- Kumar Ramamoorthy, Sunil, 1987- (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi,Swedish Center for Resource Recovery
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- Mahboubi, Amir (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi,Swedish Center for Resource Recovery
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- Hakkarainen, Minna (author)
- KTH,Polymerteknologi,Department of Fiber and Polymer Technology, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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- Zamani, Akram (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi,Swedish Center for Resource Recovery
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Univ Borås, Swedish Ctr Resource Recovery, S-50190 Borås, Sweden Swedish Center for Resource Recovery (creator_code:org_t)
- MDPI AG, 2023
- 2023
- English.
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In: FERMENTATION-BASEL. - : MDPI AG. - 2311-5637. ; 9:4
- Related links:
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https://doi.org/10.3...
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https://hb.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Carrot pomace (CP) which is generated in a large volume in the juice production process, is rich in cellulose, hemicellulose, sugars, pectin, and minerals. However, in many previous investigations, only cellulose was purified and utilized while other components of CP were discarded as waste. Here, CP was valorized into fungal biomass and cellulose with the aim of utilizing all the CP components. Enzymatic pretreatments were applied to solubilize the digestible fraction of CP including hemicellulose, pectin, sucrose, and other sugars for fungal cultivation, while cellulose remained intact in the solid fraction. The dissolved fraction was utilized as a substrate for the cultivation of an edible fungus (Rhizopus delemar). Fungal cultivation was performed in shake flasks and bench-scale bioreactors. The highest fungal biomass concentration was obtained after pretreatment with invertase (5.01 g/L) after 72 h of cultivation (36 and 42% higher than the concentrations obtained after hemicellulase and pectinase treatments, respectively). Invertase pretreatment resulted in the hydrolysis of sucrose, which could then be taken up by the fungus. Carbohydrate analysis showed 28-33% glucan, 4.1-4.9% other polysaccharides, 0.01% lignin, and 2.7-7% ash in the CP residues after enzymatic pretreatment. Fourier transform infrared spectroscopy and thermogravimetric analysis also confirmed the presence of cellulose in this fraction. The obtained fungal biomass has a high potential for food or feed applications, or as a raw material for the development of biomaterials. Cellulose could be purified from the solid fraction and used for applications such as biobased-textiles or membranes for wastewater treatment, where pure cellulose is needed.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Bioprocessteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Bioprocess Technology (hsv//eng)
Keyword
- filamentous fungi
- Rhizopus delemar
- carrot pomace
- cellulose
- enzymatic hydrolysis
- fungal cultivation
Publication and Content Type
- ref (subject category)
- art (subject category)
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