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Optimization study of citrus wastes Saccharification by dilute acid hydrolysis
Högskolan i Borås, Institutionen Ingenjörshögskolan.
Högskolan i Borås, Institutionen Ingenjörshögskolan.
Högskolan i Borås, Institutionen Ingenjörshögskolan.ORCID-id: 0000-0003-4887-2433
Högskolan i Borås, Institutionen Ingenjörshögskolan.
2008 (Engelska)Ingår i: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 3, nr 1, s. 108-122Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Optimization study of citrus wastes Saccharification by dilute acid hydrolysis

Abstract [en]

Optimization study of citrus wastes Saccharification by dilute acid hydrolysis

Abstract [en]

The effects of time, acid concentration, temperature and solid concentration on dilute-acid hydrolysis of orange peels were 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, beta-glucosidase, and pectinase enzymes 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 degrees 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% 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.

Ort, förlag, år, upplaga, sidor
North Carolina State University , 2008. Vol. 3, nr 1, s. 108-122
Nyckelord [en]
orange peels, dilute-acid hydrolysis, experimental design, suger optimization
Nyckelord [sv]
Energi och material
Nationell ämneskategori
Annan industriell bioteknik
Identifikatorer
URN: urn:nbn:se:hb:diva-2410Lokalt ID: 2320/3559OAI: oai:DiVA.org:hb-2410DiVA, id: diva2:870504
Tillgänglig från: 2015-11-13 Skapad: 2015-11-13 Senast uppdaterad: 2017-12-01Bibliografiskt granskad

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Talebnia, FaridPourbafrani, MohammadTaherzadeh, Mohammad J.Lundin, Magnus

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