Results 171 to 180 of about 29,565 (216)
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Glycoproteins from ulva lactuca
Phytochemistry, 1987Abstract Ulva lactuca yielded glycoprotein materials which differed significantly in their carbohydrate and protein moieties. The electrophoretic patterns of the isolated materials showed the presence in each of glycoprotein and polysaccharide components. All the glycoprotein components moved towards the cathode. The glycoprotein material isolated
A.Fouad Abdel-fattah, H.Hussein Sary
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Norisoprenoids fromUlvalactuca
Journal of Asian Natural Products Research, 2007Five norisoprenoids were isolated from the green marine alga Ulva lactuca. Two new compounds were assigned to (3R,5R,6R,7E)3,5,6-trihydroxy-7-megastigmen-9-one (1) and (3S,5R,6S,7E)3,5,6-trihydroxy-7-megastigmen-9-one (2). The structures and absolute configurations of the five compounds were determined by analyses of NMR, MS and circular dichroism (CD).
Y, Sun, Y-C, Zhan, Y, Sha, Y-H, Pei
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Seasonal changes in the constituents of Ulva lactuca
Phytochemistry, 1973Abstract The green marine algal species Ulva lactuca, contains appreciable amounts of lipids, but there is no correlation between the lipid content and its unsaponified fraction. The sterol content of this alga depended on the proportion of the unsaponified lipid fraction in total lipids.
A.F. Abdel-Fattah, M. Edrees
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The Ionic Relations of Ulva lactuca
Journal of Plant Physiology, 1988Summary The ionic relations of the marine green alga, Ulva lactuca (L.) Grev. have been studied in seawater ([K+]o, 10.1 mol m-3; [Na+]o, 468 mol m-3; [CI-]o, 547 mol m-3). The membrane potential (Δψi,o) was -39 ∓ 1.1mV in the light and -25∓1.9mV in the dark (∓95% confidence limits), based on micro-electrode measurements.
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Interactions of silver nanoparticles with the marine macroalga, Ulva lactuca
Ecotoxicology, 2011The marine macroalga, Ulva lactuca, has been exposed for 48 h to different concentrations of Ag added as either silver nanoparticles (AgNP) or aqueous metal (AgNO(3)) and the resulting toxicity, estimated from reductions in quenching of chlorophyll-a fluorescence, and accumulation of Ag measured.
Andrew, Turner +2 more
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Isolation of a Polysaccharide with Antiviral Effect from Ulva Lactuca
Preparative Biochemistry, 1994A polysaccharide from the green marine algae Ulva lactuca has been isolated. The substance has been investigated after acid hydrolysis by thin-layer and gas chromatography. The following carbohydrate components have been found: arabinose-xylose-rhamnose-galactose-mannose-glucose in ratio 1:1:9:5:2.5:16 respectively.
V, Ivanova +5 more
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Studies on urease extracted from Ulva lactuca
Hydrobiologia, 1984Urea is an excellent nitrogen source for the growth of many algae (Syrett 1962; Naylor 1970). In algae, the enzymes which degrade urea are urease and ATP: urea amidolyase (U ALase) (Leftley & Syrett 1973). The properties of urease and U ALase are obviously different; consequently, they can be easily distinguished in extracts. U ALase requires ATP, Mg2+,
I. A. Bekheet +2 more
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Iranian Journal of Science and Technology, Transactions A: Science, 2020
The removal efficiency for Cd (II) by the marine algae Ulva fasciata and Ulva lactuca was studied at different culture conditions. The maximum biosorption capacities were 8.353 and 8.804 mg g−1 dwt for U. fasciata and U. lactuca, respectively, at optimum conditions for each alga.
Mostafa El-Sheekh +3 more
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The removal efficiency for Cd (II) by the marine algae Ulva fasciata and Ulva lactuca was studied at different culture conditions. The maximum biosorption capacities were 8.353 and 8.804 mg g−1 dwt for U. fasciata and U. lactuca, respectively, at optimum conditions for each alga.
Mostafa El-Sheekh +3 more
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The nutritive value of seaweed (Ulva lactuca) for goats
Small Ruminant Research, 1998327
Ventura, M. R., Castañón, J. I.R.
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