- Journal of the Turkish Chemical Society Section A: Chemistry
- Vol: 8 Issue: 4
- Extraction and Characterization of Pectin from Lemon Waste for Commercial Applications
Extraction and Characterization of Pectin from Lemon Waste for Commercial Applications
Authors : Ketema Beyech Hundie, Desalegn Abdissa
Pages : 1111-1120
Doi:10.18596/jotcsa.901973
View : 5 | Download : 2
Publication Date : 2021-11-30
Article Type : Research
Abstract :The objective of this paper was preliminary to extract and characterization of purified pectin from lemon wastes. Dry lemon waste was extracted applying citric acid solvent or water at various concentrations under a similar condition (85 ºC for 4 h). It was found that the highest yield of pectin (20.8% dry basis) was achieved using hot water extraction with an esterification degree of 47.8%. It contained 63.2 ± 0.74% galacturonic acid, followed by 17.4 ± 0.76% total sugar. The monosaccharides found in pectin were arabinose (2.7 ± 0.20%), galactose (2.3 ± 0.01%), glucose (1.4 ± 0.09%), mannose (0.4 ± 0.01%), fructose (0.4 ± 0.05%), and xylose (0.1 ± 0.01%). The found pectin had a high atomic weight of 2060 kDa with a wide polydispersity index of 4.41, decided by high-Performance Size Exclusion Chromatography (HPSEC). The extricated lemon waste pectin was grouped into low methoxyl pectin, depends on the methoxyl content and degree of esterification affirmed by Fourier transform infrared spectroscopy (FT-IR) and rheological properties. In conclusion, the discoveries of the study show that lemon waste can be investigated as a promising elective for the commercial manufacturing of pectin.Keywords : Lemon waste, Pectin, Composition, Molecular weight