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 (sī-tŏs′tə-rôl′, -rōl′, sĭ-)
Any of a group of sterols that occur in high concentrations in certain plants and are used in the synthesis of steroid hormones.

[Greek sītos, food, grain + sterol.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a white powder or waxy white solid extracted from soya beans, consisting of a mixture of isomers of the formula C29H50O with other sterols: used in cosmetics and medicine
[C20: from Greek sitos food, grain + sterol]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(saɪˈtɒs təˌrɔl, -ˌrɒl)

any of five steroid alcohols having the formula C22H50O, esp. the beta form: used in organic synthesis.
[1898; < Greek sīto-, comb. form of sîtos grain + sterol]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Mustard seeds are high in essential oil and are great source of plant sterols such as brassicasterol, campesterol, sitosterol, avenasterol, and stigmasterol.
The minerals magnesium, zinc, iron and germanium, which plays an important role in all bio-chemical life and is found in the soil and water at Lourdes that also contains Pfaffic acid, allantoin, sitosterol and stipmasterol.
In conclusion, three active ingredients including Vitamin C, Folate and Sitosterol, were picked out as agonists by the high-throughput screening from 13 compounds, particularly the effects of Sitosterol.
compounds (%) fermentation) fermentation Day 0 Day 3 Day 7 Day 0 Day 3 Day 7 Caffeine 74.59 18.26 38.45 46.64 20.26 30.59 Theobromine 37.71 17.59 26.26 35.47 19.22 25.66 [gamma]- ND ND 3.63 0.95 0.43 1.29 tocopherol Stigmasterol 0.51 0.16 1.46 0.69 0.28 0.70 [beta]- 1.07 0.22 1.74 1.31 0.41 1.17 sitosterol Targeted Candida sp.
In principal the exact masses of these ions are identical with the corresponding masses of the typical secondary ions ([[M-OH].sup.+]) of the free campesterol and sitosterol molecules ([C.sub.28][H.sub.48][O.sup.+] and [C.sub.29][H.sub.50][O.sup.+]).
Sterol Cholesterol Desmosterol Brassicasterol Concentration 321 [+ or -] 76 148 [+ or -] 47 104 [+ or -] 32 (mg/kg) Sterol Sitosterol Ergosterol Campesterol Concentration 28 [+ or -] 8 26 [+ or -] 4 13 [+ or -] 3 (mg/kg) * Data are mean of three individual mussels [+ or -] SD.
The Broad Spectrum SPF 30 Sunscreen with Vitamin D uses a lipid-balancing formula made of all-natural ingredients--meadow-foam, olive, chamomile, calendula, jojoba, beta sitosterol and abyssinian--intended to hydrate the skin holistically while providing an SPF product that offers the user the additional vitamin D required for healthy skin metabolism.
ASE extracted higher yields of oil, at 89.2%, and phytosterols, such as stigmasterol, at 34.2 ppm, and sitosterol, at 1001.6 ppm, than did the CP method.
Extract of the unsaponifiable fraction of Zea mays oils (between 20.0% and 25.0% [beta] sitosterol).
And lathosterol, campesterol, and sitosterol declined with dual therapy but increased with monotherapy.
However, a ratio between sitosterol and stigmasterol was calculated for all the stations that had both sterols, and a negative linear regression was obtained between this ratio and seaward distance (Fig.