Paper Title:
A Study of the Extraction of Pectin from Dried Lemon Peels
  Abstract

Pectin was extracted from dried lemon peels using acid hydrolysis. Five process variables/factors were chosen for investigation; the extraction temperature, extraction time, pH, size of the peels and the peel to water mass ratio. Three response variables were monitored; the Yield (% Yield), Degree of Esterification (% DE) and Galacturonic Acid content (% GA). A duplicated 25 factorial design was conducted on dried peels. The extraction temperature, time, pH and size of the peel were found to be the most significant variables affecting the pectin yield. The most significant variable affecting the % GA was found to be the extraction time and the % DE was most significantly affected by the pH as well as the extraction temperature. A duplicated 24 design (peel size excluded as a process variable) on fresh wet peels was conducted in order to compare the results attained to those of dried peel extraction. Drying the peel therefore increased the greatest pectin yield attained, it had no drastic effect on the % GA, but it reduced the % DE of the pectin extract. A 24 design was also performed on wet peels that had been stored at atmospheric conditions for two days. The results were compared to those found from fresh wet peel extraction, in order to depict the need for drying the peel.

  Info
Periodical
Chapter
Chapter 5: Materials Processing
Edited by
A.O. Akii Ibhadode
Pages
311-318
DOI
10.4028/www.scientific.net/AMR.367.311
Citation
L. Lerotholi, M. Carsky, D.I.O. Ikhu-Omoregbe, "A Study of the Extraction of Pectin from Dried Lemon Peels", Advanced Materials Research, Vol. 367, pp. 311-318, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Thanyamas Nutithawat, Chulalongkorn Kusonwiriyawong, Garnpimol C. Ritthidej
Abstract:Pectic polysaccharide from durian rinds (Durio Zibethinus) has been reported to mainly compose of pectin which is generally used in various...
417
Authors: J.A. Cárcel, Regina Isabel Nogueira, Carmen Rosselló, E.S. Mariano, M. Blasco, A. Mulet
Abstract:The olive crop has a great importance in the economy of Spain. Every year during the pruning of the olive trees a significant quantity of...
1077
Authors: Huan Li, Yang Yang Li, Yi Ying Jin
Chapter 8: Waste Disposal and Recycling
Abstract:The co-combustibility of coal and sludge was investigated with thermogravimetric analysis. The results show that the burning process of...
3271
Authors: Ying Jun Long, Cong Fa Li, Min Hua Yu, Si Xin Liu
Chapter 11: Biomaterials
Abstract:Nata is widely used in food, cosmetics and so on. However dried Nata is insoluble in water. It is very important to increase the rehydration...
2087
Authors: Z. Teferi, T.S. Workneh, K. Woldetsadik
Chapter 5: Materials Processing
Abstract:Pumpkin (Cucuribita Spp.) fruit slices were subjected to pre-drying treatments and drying using methods of uncontrolled sun and oven...
283