Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 9, Pages 3268-3273Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.12.062
Keywords
Mulberry; Branch bark; Pectin; Esterification
Funding
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0654]
- Program for New Century Excellent Talents in University [NCET070763]
- Program for Qianjiang Talents of Zhejiang Province [2008R10006]
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Pectins were extracted from mulberry branch bark, a byproduct of the sericulture industry. A single-factor experiment was used to optimize the production conditions. Under optimal conditions, the galacturonic acid yields from bark with and without epidermis were 61.73 +/- 1.39% and 35.12 +/- 0.24%, respectively. The extracted pectins mainly consisted of galacturonic acid with a trace amount of neutral sugars, and the total galacturonic acid content in the pectins extracted from the bark without epidermis reached 85.46 +/- 2.76%. Pectins extracted from bark without epidermis had a higher degree of esterification (71.13 +/- 1.67%) than those extracted from bark with epidermis (24.27 +/- 2.89%). Pectin Solution from bark without epidermis showed higher apparent viscosity, suggesting its higher gelation ability. Thus, the mulberry branch bark is a potential source of pectin with different degrees of esterification. (C) 2009 Elsevier Ltd. All rights reserved.
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