OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS
The effect of time, acid concentration, temperature and solid concentration on dilute-acid hydrolysis of orange peels was investigated. A central composite rotatable experimental design (CCRD) was applied to study the individual effects of these hydrolysis factors and also their interdependence effe...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2008-02-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_03_1_0108_Talebnia_PLT_CitrusWastesSaccharif_Acid/171 |
| _version_ | 1811197716127023104 |
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| author | Farid Talebnia Mohammad Pour Bafrani Magnus Lundin Mohammad Taherzadeh |
| author_facet | Farid Talebnia Mohammad Pour Bafrani Magnus Lundin Mohammad Taherzadeh |
| author_sort | Farid Talebnia |
| collection | DOAJ |
| description | The effect of time, acid concentration, temperature and solid concentration on dilute-acid hydrolysis of orange peels was investigated. A central composite rotatable experimental design (CCRD) was applied to study the individual effects of these hydrolysis factors and also their interdependence effects. The enzymatic hydrolysis of the peels by cellulase, β-glucosidase, and pectinase enzyme resulted in 72% dissolution of the peels, including 18.7% galacturonic acid and 53.3% of a total of glucose, fructose, galactose, and arabinose. Dilute-acid hydrolysis up to 210°C was not able to hydrolyze pectin to galacturonic acid. However, the sugar polymers were hydrolyzed at relatively low temperature. The optimum results were obtained at 116°C, 0.5% sulfuric acid concentration, 6% solid fraction, and 12.9 min retention time. Under these conditions, the total sugars obtained at 41.8 g/g dry peels and 2.6% of total hexose sugars were further degraded to hydroxymethylfurfural (HMF). No furfural was detected through these experiments from decomposition of pentoses. |
| first_indexed | 2024-04-12T01:18:59Z |
| format | Article |
| id | doaj.art-adbb4ba6119e480bb2c4736a187074e0 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-04-12T01:18:59Z |
| publishDate | 2008-02-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-adbb4ba6119e480bb2c4736a187074e02022-12-22T03:53:52ZengNorth Carolina State UniversityBioResources1930-21262008-02-0131108122OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSISFarid TalebniaMohammad Pour BafraniMagnus LundinMohammad TaherzadehThe effect of time, acid concentration, temperature and solid concentration on dilute-acid hydrolysis of orange peels was investigated. A central composite rotatable experimental design (CCRD) was applied to study the individual effects of these hydrolysis factors and also their interdependence effects. The enzymatic hydrolysis of the peels by cellulase, β-glucosidase, and pectinase enzyme resulted in 72% dissolution of the peels, including 18.7% galacturonic acid and 53.3% of a total of glucose, fructose, galactose, and arabinose. Dilute-acid hydrolysis up to 210°C was not able to hydrolyze pectin to galacturonic acid. However, the sugar polymers were hydrolyzed at relatively low temperature. The optimum results were obtained at 116°C, 0.5% sulfuric acid concentration, 6% solid fraction, and 12.9 min retention time. Under these conditions, the total sugars obtained at 41.8 g/g dry peels and 2.6% of total hexose sugars were further degraded to hydroxymethylfurfural (HMF). No furfural was detected through these experiments from decomposition of pentoses.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_03_1_0108_Talebnia_PLT_CitrusWastesSaccharif_Acid/171Orange peelDilute-acid hydrolysisExperimental designSugar optimization |
| spellingShingle | Farid Talebnia Mohammad Pour Bafrani Magnus Lundin Mohammad Taherzadeh OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS BioResources Orange peel Dilute-acid hydrolysis Experimental design Sugar optimization |
| title | OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS |
| title_full | OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS |
| title_fullStr | OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS |
| title_full_unstemmed | OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS |
| title_short | OPTIMIZATION STUDY OF CITRUS WASTES SACCHARIFICATION BY DILUTE ACID HYDROLYSIS |
| title_sort | optimization study of citrus wastes saccharification by dilute acid hydrolysis |
| topic | Orange peel Dilute-acid hydrolysis Experimental design Sugar optimization |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_03_1_0108_Talebnia_PLT_CitrusWastesSaccharif_Acid/171 |
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