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The fine structure and water permeability of potato tuber periderm have been studied. Periderm membranes (PM) were isolated enzymatically using pectinase and cellulase. They were composed of, about six layers of phellem cells arranged in radial rows. The walls of phellem cells consist of cellulosic primary and tertiary walls and suberized secondary walls(More)
Polyphenolic grape seed extract (0.1 w/v%) was encapsulated in liposomes (1% soy lecithin) by high pressure homogenization at 22 500 psi. Liposomes containing grape extract had mean particle diameters of <100 nm compared to control liposomes that contained no extract and that had mean particle diameters of <40 nm. Liposomes with grape seed extract were(More)
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