Tjuanda, Ricky and Puteri, Maria Dewi P. T. Gunawan and Prabawati, Elisabeth K. (2015) Extraction Optimization and Characterization of Pectin from Peels of some Indonesian Citrus Varieties. Bachelor thesis, Swiss German University.

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Abstract

Pectin production from citrus peels is a potential way to manage waste from citrus industries. In this research, various method was developed in optimizing the pectin extraction from three variant of local citrus peels (Baby Jaffa, Bali Madu, Keprok). Pectin was extracted by comparing two different methods, pretreatment with drying (microwave and tray drier) and extraction with the same extraction reagent (citric acid) for 1 hour at 1.5 pH (addition of sodium hexametaphosphate at 80oC and without the addition sodium hexametaphosphate at 90oC). The chosen method was further purified with several adjustment methods. The development of purification method was based on variables such as pretreatment method, separation of liquid-solid, washing process, re-coagulation, and pH adjustment. The best extraction method was dried under microwave and extracted with citric acid and addition of sodium hexametaphosphate at 90oC for 1 hour at 1.5 pH. The best purification method was by re-coagulation while the pH was adjusted. The yield of pectin varied from 6.13% to 14.05%. The character of pectin regarding equivalent weight varied from 752.03 g/mol to 1201.41 g/mol, methoxyl content from 8.46% to 9.37%, total anhydrouronic acid from 67.38% to 71.03%, degree of esterification from 67.09% to 77.86%, moisture content from 0.96% to 3.50%, and ash content 5.26% to 6.39%.

Item Type:	Thesis (Bachelor)
Uncontrolled Keywords:	Citrus Peel; Pectin; Pretreatment; Extraction; Purification
Subjects:	T Technology > TP Chemical technology > TP156 Extraction (Chemistry) T Technology > TP Chemical technology > TP368 Food processing and manufacture T Technology > TP Chemical technology > TP959 Citrus oils
Divisions:	Faculty of Life Sciences and Technology > Department of Food Technology
Depositing User:	Astuti Kusumaningrum
Date Deposited:	21 Dec 2021 16:56
Last Modified:	21 Dec 2021 16:56
URI:	http://repository.sgu.ac.id/id/eprint/1282

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