Soybean sterol

Marshall JA et al (2001) Soybean sterol composition and utihzation by Phytophthora sojae. Phytochemistry 58 423... 

The chemistry for providing steroid raw materials from the far more readily available soybean sterols was developed somewhat later. The so-called unsaponifiable fraction... 

Peterson, D.W. 1951. Effect of soybean sterols in the diet on plasma and liver cholesterol in chicks. Proc. Soc. Exp. Biol. Med. 78, 143-147. 

Standard Preparation Transfer about 25 mg of a commercially available soybean sterol mix into a 10-mL volumetric flask. Dissolve in and dilute to volume with heptane to a final concentration of about 2.5 mg/mL. Dilute a suitable portion 1 40 with heptane. 

Katayama, M. M. Katoh. Soybean sterols during maturation of seeds i. Accumulation of sterols in the free form, fatty acid esters, acylated glucosides and non-acylated glucosides. Plant Cell Physiol. 1973,14, 681-688. 

Hernandez HH, Peterson DW, Chaikoff IL, Dauben WG (1953) Absorption of cholesterol-4-C14 in rats fed mixed soybean sterols and beta-sitosterol. Proc Soc Exp Biol Med 83(3) 498-499... 

Methyl sterols occur naturally in only minor amounts as they are precursors of the desmethyl sterols. In commercial soybean sterols, 98.1% are 4-desmethyl sterols, 1.3% are 4-methyl sterols and 0.6% are 4,4-dimethyl sterols (Sierksma et al, 1999). Compared with 4-desmethyl sterols, the number of different 4-methyl sterol compounds is small. 

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