Enzymatic production of a soluble-fibre hydrolyzate from carrot pomace and its sugar composition

This study was conducted to determine the sugar composition of soluble dietary fibre from carrot pomace, a by-product from the carrot juice processing industry. Carrot pomace was treated with a mixture of 1% NaOH and 2% acetic acid, and the pretreated sample was hydrolyzed by edible snails crude enz...

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Bibliographic Details
Published in:Food chemistry 2005-08, Vol.92 (1), p.151-157
Main Authors: Yoon, Kyung Young, Cha, Myeonghwa, Shin, Seung Ryeul, Kim, Kwang Soo
Format: Article
Language:English
Subjects:
Biological and medical sciences
Carrot pomace
Cellulase
Daucus
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
Soluble dietary fibre
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Summary:This study was conducted to determine the sugar composition of soluble dietary fibre from carrot pomace, a by-product from the carrot juice processing industry. Carrot pomace was treated with a mixture of 1% NaOH and 2% acetic acid, and the pretreated sample was hydrolyzed by edible snails crude enzyme. The supernatant portion was then treated with 85% ethanol and separated into alcohol-soluble dietary fibre (ASDF) and alcohol-insoluble dietary fibre (AIDF). AIDF increased from an initial value of 3.3 g/100 g to 41.7 g/100 g carrot pomace after 96 h of reaction. The AIDF contained rhamnose, arabinose, mannose, galactose, glucose and a small amount of xylose. Monosaccharides (glucose, fructose, galactose, arabinose), cellooligosaccharides (cellopentaose, cellotetraose, cellotriose, cellobiose), and galactooligosaccharides (galactotetraose, galactotriose) were detected in the ASDF.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2004.07.014