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- Extraction and Characterization of Residue Fibers from Defatted Date-Pits after Alkaline-Acid Digestion: Effects of Different Pretreatments
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Extraction and Characterization of Residue Fibers from Defatted Date-Pits after Alkaline-Acid Digestion: Effects of Different Pretreatments
Authors: Nasser Al-Habsi,
Identifier: CSBE21926
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: Holo-cellulose fibers were prepared by pre-treatments (i.e. water, ethanol, microwave and pressure cooker) and alkaline-acid digestion of defatted date-pits. Ethanol pre-treated fibers showed the highest content of hollo-cellulose (i.e. 76.1 g/100 g sample) and the lowest content of lignin (0.8 g/100 g sample). Thermal analysis of defatted date-pits showed a structural relaxation at -5.3oC followed by an onset glass transition at 135oC and solids melting-decomposition endothermic peak at 183oC with enthalpy of 125 kJ/kg. However, all treated defatted date-pits showed a cold crystallization exothermic peak (i.e. 155-160oC). Ethanol pre-treated sample showed the highest specific heat change (i.e. 380 J/kg oC) at the glass transition (i.e. highest fraction of amorphous component) and the highest solids melting-decomposition peak at 187oC and enthalpy of 239 kJ/kg (i.e. more energy to decompose molecular networks). Fourier Transform Infrared (FTIR) spectra of all treated date-pits showed higher absorptions, indicating more interlinking ability with other components.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Food 2 - Processing & Quality
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Type: Text.Abstract
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Publication type: Presentation
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Coverage: Oman
Language 1: en
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Rights: Canadian Society for Bioengineering
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DOI:
Description: Holo-cellulose fibers were prepared by pre-treatments (i.e. water, ethanol, microwave and pressure cooker) and alkaline-acid digestion of defatted date-pits. Ethanol pre-treated fibers showed the highest content of hollo-cellulose (i.e. 76.1 g/100 g sample) and the lowest content of lignin (0.8 g/100 g sample). Thermal analysis of defatted date-pits showed a structural relaxation at -5.3oC followed by an onset glass transition at 135oC and solids melting-decomposition endothermic peak at 183oC with enthalpy of 125 kJ/kg. However, all treated defatted date-pits showed a cold crystallization exothermic peak (i.e. 155-160oC). Ethanol pre-treated sample showed the highest specific heat change (i.e. 380 J/kg oC) at the glass transition (i.e. highest fraction of amorphous component) and the highest solids melting-decomposition peak at 187oC and enthalpy of 239 kJ/kg (i.e. more energy to decompose molecular networks). Fourier Transform Infrared (FTIR) spectra of all treated date-pits showed higher absorptions, indicating more interlinking ability with other components.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Food 2 - Processing & Quality
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Oman
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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