Cholesterol stearate

Figure 3 Infrared spectra (1800 to 1600 cm 1) of 5-oxo potassium stearate (5-oxo KSA) incorporated in hydrated DHPC bilayers in the absence (—) and presence of 45 mol % cholesterol (—) (A) spectra recorded at 22 C, and (B) spectra recorded at 53 C. The broad bands at 1703 cm 1 (A) and 1705 cm 1 (B) are due to the COOH group of stearic acid (see Text).

Niosomes are non-ionic surfactant vesicles. They have been used to develop a vaccine-delivery system by peroral and oral routes. Ovalbumin was encapsulated in various lyophilized niosome preparations consisting of sucrose esters, cholesterol, and dicetyl phosphate. Encapsulation of ovalbumin into niosomes consisting of 70% stearate sucrose ester and 30% pal-mitate sucrose ester (40%i mono-, 60% di/triester) resulted in a significant increase in antibody titers in serum, saliva, and intestinal washings. ... 

The step height analysis of these two-dimensional cholesterol crystals gives 90 A, which corresponds to six layers of cholesterol (90 A/length of cholesterol molecule =15 A). This is different from what is seen for the collapsed films of Mg-(stearate)2, as is well known from monolayer surface pressure vs. area isotherms. ... 

Cholesterol esterase (CEH, EC 3.1.1.13) catalyzes the hydrolysis of many cholesterol esters, ranging from the acetate to the stearate, liberating cholesterol and the corresponding fatty acid. Different temperature optima have been found for CEH, 25°C (Lynn et al., 1982), above 60°C (Clark et al., 1978), and 35°C (Tabata et al., 1981). The pH optimum has been determined to be between 6 and 8 in phosphate buffer of 0.3-1.0 mol/1 (Dietschy et al., 1976). Maximum activity has been observed in the presence of 0.05-0.3% Triton X-100. Above 0.3% the enzyme is almost completely inhibited. 

AcetulanCi. Acetylated lanolin alcohols Prepn-Conrad, Muliuk, J. Soc. Cosmet. Chem. 6, 344 (1955), eidem. LS. pal 2,723.334 (I9S5 to American Cholesterol Prod ) Pale yellow, practically odorless liquid Sp gr at 25 0867 Neutral to litmus. Acid no 0 34 Hydroxyl no. 2.0. Saponification no 190.0 Hydrophobic, practically insol in water with no emulsification. Miscible with mineral oil, castor ml, vegetable oils, isopropanol. 95% ethanol, isopropyl mynstale. isopropyl palmiialc. hutyl stearate l F In cosmetic formulations and shampoo. 

The rates of autoxidation of cholesterol have been determined in aqueous dispersions and in monomolecular films. The main products, 7-oxo- and 7-hydroxy-cholesterols, are formed rapidly at 85 °C in an aerated dispersion stabilized by sodium stearate (over 60 % oxidized in 8 h) or when a surface film is exposed to air at room temperature. No oxidation was observed, however, when a dispersion was aerated at 25 Cholesterol 26-hydroperoxide has... 

Fig. 11.6.1. HPLC separation of cholesterol and cholesteryl ester standards. Chromatographic conditions column, Supelcosil LC-18 (250x4.6 mm I.D.) mobile phase, acetonitrile-methanol-chloroform (1 1 1, v/v/v) flow rate, 1.0 ml/min temperature, ambient detection, differential refractometer. Peaks 1, cholesterol, 2, acetate 3, propionate 4, butyrate 5, nonanoate 6, decanoate 7, arachidonate 8, laurate 9, linoleate 10, oleate 11, elaidate 12, palmitate 13, stearate. The average mass of lipid chromatographed was 20-40 ng. Reproduced from Perkins et al. (1981), with...

The profile of fatty acids in cholesterol esters showed a difference between the two diet groups (Table III). The high levels of palmitate and stearate esters presumably originated from the dietary fat. Since the absorption of palmitate and stearate is low, more of these fatty acids were available in the intestine for esterification. The percentage of oleate was three times greater in the cellulose-diet group than in the pectin-diet group. 

Stern and Shapiro (1954) incubated the intact mesenteric fat of starved rats with serum and observed a deerease in the total serum esterified fatty acid content but no decrease in the phospholipid or cholesterol ester fraction. When mesenteric adipose tissue was incubated with sodium stearate-1-C or sodium oleate, a significant uptake could be demonstrated and the fatty acids that disappeared from the medium could be recovered in good yield inside the tissue. Of the stearate absorbed, 20-30% was found in the tissue in a combined form, presumably in ester linkage. Stern and Shapiro (1954) also showed that adipose tissue can absorb fatty acids from emulsions of triolein, sorbitan-monolaurate, sorbitan-monopalmitate, and... 

Cholest-5-en-3-ol, octadecanoate. See Cholesteryl stearate Cholesteric esters Cholesterin. See Cholesterol Cholesterol... 

Unichem ZO. See Zinc oxide Unichem ZPS. See Zinc phenolsulfonate Unichem ZS. See Zinc stearate Unichlor 40-90, 40-150, Unichlor 40-170, 40-205, 50L-50, Unichlor 50-220, 50-270, 50-375, Unichlor 50-450, 60L-60, 65L-85, Unichlor 70-AX, 70L-190, 70-SSG, Unichlor 5510, 5722. See Paraffin, chlorinated Unichol EUM-L. See PPG-2-ceteareth-9 Unichol. See Cholesterol Unicide U-13. See Imidazolidinyl urea Unicoi 12. See Trideceth-12 Unicoi 15. See Tri deceth-15 Unicoi 50. See Benzalkonium chloride Unicoi 1200. SeePPG-20 Unicoi AETH-8. See PPG-5-laureth-5 Unicoi CA-2. See Ceteth-2 Unicoi CA-4. See Ceteth-4 Unicoi CA-10. See Ceteth-10 Unicoi CA-20. See Ceteth-20 Unicoi CSA-2. See Ceteareth-2 Unicoi CSA-4. See Ceteareth-4 Unicoi CSA-5. See Ceteareth-5 Unicoi CSA-10. See Ceteareth-10 Unicoi CSA-15. See Ceteareth-15 Unicoi CSA-20. See Ceteareth-20 Unicoi CSA-30. See Ceteareth-30 Unicoi CSA-40. See Ceteareth-40 Unicoi LA-4. See Laureth-4 Unicoi LA-9. See Laureth-9 Unicoi LA-23. See Laureth-23 Unicoi NP-2. See Nonoxynol-2 Unicoi NP-4. See Nonoxynol-4 Unicoi NP-5. See Nonoxynol-5 Unicoi NP-6. See Nonoxynol-6 Unicoi NP-7. See Nonoxynol-7 Unicoi NP-8. See Nonoxynol-8 Unicoi NP-9. See Nonoxynol-9 Unicoi NP-10. See Nonoxynol-10 Unicoi NP-20. See Nonoxynol-20 Unicoi NP-30. See Nonoxynol-30 Unicoi NP-40. See Nonoxynol-40 Unicoi NP-50. See Nonoxynol-50 Unicoi NP-100. SeeNonoxynoMOO Unicoi OA-2. See Oleth-2 Unicoi OA-4. SeeOleth-4 Unicoi OA-10. SeeOleth-10 Unicoi OA-20. See Oleth-20 Unicoi P-400. SeePPG-9 Unicoi P-2000. See PPG-26 Unicoi P-4000. See PPG-30 Unicoi Propox 1695. See PPG-5 lanolin wax Unicoi SA-2. See Steareth-2 Unicoi SA-10. See Steareth-10 Unicoi SA-13. See Steareth-13 Unicoi SA-15. See Steareth-15 Unicoi SA-20. See Steareth-20... 

Chimyl alcohol Chimyl isostearate Chloro-2-hydroxypropyl trimonium chloride Cholesterol Cholesteryl hydroxystearate Cholesteryl isostearate Cholesteryl macadamiate Cholesteryl nonanoate Cholesteryl stearate C13-14 isoparaffin C18-70 isoparaffin C20-40 isoparaffin Cocaminobutyric acid... 

Caprylic/capric glycerides Caprylic/capric/succinic triglyceride Caprylic/capric triglyceride PEG-4 esters Carbomer 934 Carbomer 940 Carbomer 941 Carrageenan (Chondrus crispus) Cl 0-30 cholesterol/lanosterol esters Ceteareth-2 Ceteareth-3 Ceteareth-4 Ceteareth-6 Ceteareth-7 Ceteareth-8 Ceteareth-9 Ceteareth-11 Ceteareth-13 Ceteareth-16 Ceteareth-17 Ceteareth-18 Ceteareth-20 Ceteareth-22 Ceteareth-23 Ceteareth-25 Ceteareth-27 Ceteareth-28 Ceteareth-29 Ceteareth-30 Ceteareth-33 Ceteareth-34 Ceteareth-40 Ceteareth-50 Ceteareth-60 Ceteareth-10 phosphate Cetearyl alcohol Cetearyl octanoate Cetearyl stearate Ceteth Ceteth-1 Ceteth-2... 

Cl 8-20 glycol isostearate C20-30 glycol isostearate C14-16 glycol palmitate Chimyl alcohol Chimyl stearate Chloro-2-hydroxypropyl trimonium chloride Cholesterol Cholesteryl stearate Choleth-5 Choleth-10 Choleth-15 Choleth-20 Choleth-24... 

Octyl isononanoate Octyl stearate Oleamide DEA Oleamide MIPA Oleth-3 Oleyl alcohol PEG-2 stearate PEG-8 stearate Pentaerythrityl tetracaprylate/tetracaprate Pentaerythrityl tetraisostearate lubricant, pharmaceuticals Acetylated lanolin Acetylated mono- and diglycerides of fatty acids Apricot (Prunus armeniaca) kernel oil Behenic acid Butylene glycol dicaprylate/dicaprate Butyl myristate Cl 8-36 acid glycol ester C18-36 acid triglyceride Canola oil Cl0-30 cholesterol/lanosterol esters Ceteareth-6 Ceteth-16 Ceteth-20 Cetyl lactate Cocoyl sarcosine... 

Balsam copaiba (Copaifera officinalis) Balsam copaiba (Copaifera officinalis) oil Behenamidopropyl dimethylamine Benzyl laurate Boron nitride Butyl octyl benzoate C10-30 cholesterol/lanosterol esters Dicocodimethylamine dimerate Distearyidimethylamine dilinoleate Gold of pleasure (Camelina sativa) oil Hexyldecyl benzoate Hyaluronic acid Isopropyl stearate Linoleamidopropyl dimethylamine Macadamia ternifolia nut oil Octyidodecyl stearoyl stearate Oleyl oleate PEG/PPG-8/3 diisostearate PEG-14 tallate Polymethylsilsesquioxane Polyquaternium-22 PPG-26-buteth-26 Sodium/TEA-lauroyl hydrolyzed keratin Stearamide DEA Stearamidoethyl ethanolamine... 

Brassica campestris/Aleurites fordi oil copolymer Candelilla synthetic Caprylic/capric triglyceride Carboxymethyl chitin Cl0-30 cholesterol/lanosterol esters Cetearyl behenate Cetearyl stearate Ceteth-80 Cetyl ricinoleate Cholesterol Coco-rapeseedate Collagen Collagen amino acids Coneflower (Echinacea pallida) extract Coneflower (Echinacea purpurea) extract Connective tissue extract Copper acetylmethionate Copper PCA Cornflower (Centaurea cyanus) extract Diisostearyl dimer dilinoleate... 

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