Premium
A Comparison of Enzymatic and Lime Treatments for Extraction of Alcohol Soluble Solids from Citrus Peel
Author(s) -
MARSHALL M. R.,
GRAUMLICH T. R.,
BRADDOCK R. J.,
MESSERSMITH M.
Publication year - 1985
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1985.tb13056.x
Subject(s) - pectinase , chemistry , cellulase , sucrose , xylose , sugar , arabinose , food science , lime , fructose , citric acid , chromatography , cellulose , enzyme , biochemistry , materials science , fermentation , metallurgy
Digestion of citrus wastes by pectolytic and cellulolytic enzymes was compared to the currently employed lime method of solubilizing solids from citrus peel. Maximal soluble solids removed from the pressed peel occurred after 6 hr incubation at 45°C with a pectinase concentration of 1.0 PGu/g peel mixture. Decreasing the particle size of the peel caused a 4 ‐ 10% increase in solids removal after enzyme treatment. Addition of cellulase enzyme (20 CEu/g peel mixture) to pectinase enzyme (1.0 PGu/g peel mixture) removed an additional 15% soluble solids from peel. Glucose, fructose, arabinose, and xylose were the major sugars extracted from enzymetreated peel, while sucrose was the major sugar in lime‐treated peel samples. Organic acids (citric, malic, and quinic) were present at higher concentrations in lime‐treated peel extracts than in enzymetreated peel extracts.