Evaluation of surfactant-aided degumming of vegetable oils by membrane technology.

Subramanian, R. and Nakajima, N. and Yasui, A. and Nabetani, H. and Kimura, T. and Maekawa, T. (1999) Evaluation of surfactant-aided degumming of vegetable oils by membrane technology. Journal of the American Oil Chemists' Society, 76 (10). pp. 1247-1253.

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Abstract

The first step in the process of vegetable oil refining is degumming, in which phospholipids and mucilaginous gums are removed that otherwise result in a low-grade oil. A membrane process is remarkably simple yet potentially offers many advantages in degumming. Studies were conducted on surfactant- aided membrane degumming with soybean and rapeseed oils in a magnetically stirred flat membrane batch cell with different types of microfiltration membranes. The reduction of phospholipids in soybean oil was in the range of 85.8–92.8% during the membrane process. The phosphorus content of membrane permeates of soybean oil was in the range of 20–58 mg/kg. Crude rapeseed oil contained higher amount of nonhydratable phospholipids and hence resulted in lower reduction in phospholipids, in the range of 66.4–83.2%. Addition of hydratable phospholipids could improve the efficiency of degumming in the membrane process without using any electrolyte, resulting in improvement of quality as well as quantity of the phospholipids.

Item Type:	Article
Uncontrolled Keywords:	Degumming, lecithin, microfiltration, nonhydratable phospholipids, observed rejection, permeate flux, phospholipids, phosphatidylcholine, rapeseed oil, soybean oil.
Subjects:	600 Technology > 08 Food technology > 05 Processing and Engineering 600 Technology > 08 Food technology > 19 Lipids-oils/fats
Divisions:	Food Engineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	01 Jul 2009 05:08
Last Modified:	28 Dec 2011 09:46
URI:	http://ir.cftri.res.in/id/eprint/4157

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