From the boiling water extract of limed orange pee1 (Citrus Unshiu), white powder (PO) was obtained by means of alcohol precipitation, dialysis, removal of cation with ion exchange resin, and decolorization. Since PO was easily soluble in water and contained arabinose and galactose, it was presumed to be one of hemicellulose of comparatively low molecule. And it was found that this substance not only prevented the crystalization of hesperidin, but also precipitated tannin. Morevor when PO was 4 times as much as tanninc acid, this precipitate became remarkably soluble. These phenomenons agreed with the previously reported properties of methyl cellulose. By the addition of PO in canned mandarin orange, the transparency of syrup was preserved for a long time. Therefore, PO would be utilized as the natural prevention agent for the white turbidity in the syrup of canned mandarin orange
The Prevention of White Turbidity in the Syrup of Canned Mandarin Orange by the Addition of Orange Peel Extract