title: Development of saw palmetto (Serenoa repens) fruit and extract standard reference materials.
abstract: As part of a collaboration with the National Institutes of Health's Office of Dietary Supplements and the Food and Drug Administration's Center for Drug Evaluation and Research, the National Institute of Standards and Technology has developed two standard reference materials (SRMs) representing different forms of saw palmetto (Serenoa repens), SRM 3250 Serenoa repens fruit and SRM 3251 Serenoa repens extract. Both of these SRMs have been characterized for their fatty acid and phytosterol content. The fatty acid concentration values are based on results from gas chromatography with flame ionization detection (GC-FID) and mass spectrometry (GC/MS) analysis while the sterol concentration values are based on results from GC-FID and liquid chromatography with mass spectrometry analysis. In addition, SRM 3250 has been characterized for lead content, and SRM 3251 has been characterized for the content of beta-carotene and tocopherols. SRM 3250 (fruit) has certified concentration values for three phytosterols, 14 fatty acids as triglycerides, and lead along with reference concentration values for four fatty acids as triglycerides and 16 free fatty acids. SRM 3251 (extract) has certified concentration values for three phytosterols, 17 fatty acids as triglycerides, beta-carotene, and gamma-tocopherol along with reference concentration values for three fatty acids as triglycerides, 17 fatty acids as free fatty acids, beta-carotene isomers, and delta-tocopherol and information values for two phytosterols. These SRMs will complement other reference materials currently available with concentrations for similar analytes and are part of a series of SRMs being developed for dietary supplements.
authors.affiliation: Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. michele.schantz@nist.gov
authors.forename: Michele M
authors.initials: MM
authors.lastname: Schantz
authors.forename: Mary
authors.initials: M
authors.lastname: Bedner
authors.forename: Stephen E
authors.initials: SE
authors.lastname: Long
authors.forename: John L
authors.initials: JL
authors.lastname: Molloy
authors.forename: Karen E
authors.initials: KE
authors.lastname: Murphy
authors.forename: Barbara J
authors.initials: BJ
authors.lastname: Porter
authors.forename: Karsten
authors.initials: K
authors.lastname: Putzbach
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Rimmer
authors.forename: Lane C
authors.initials: LC
authors.lastname: Sander
authors.forename: Katherine E
authors.initials: KE
authors.lastname: Sharpless
authors.forename: Jeanice B
authors.initials: JB
authors.lastname: Thomas
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Wise
authors.forename: Laura J
authors.initials: LJ
authors.lastname: Wood
authors.forename: James H
authors.initials: JH
authors.lastname: Yen
authors.forename: Takashi
authors.initials: T
authors.lastname: Yarita
authors.forename: Agnes
authors.initials: A
authors.lastname: NguyenPho
authors.forename: Wendy R
authors.initials: WR
authors.lastname: Sorenson
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Betz
mesh_terms: D005227:Fatty Acids / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis* / Q000737:chemistry*; D012015:Reference Standards; D028024:Serenoa / Q000737:chemistry*; D013261:Sterols / Q000032:analysis; D024505:Tocopherols / Q000737:chemistry; D019207:beta Carotene / Q000032:analysis
chemical_list: D005227:Fatty Acids; D010936:Plant Extracts; D013261:Sterols; D019207:beta Carotene; D024505:Tocopherols