title: Development and certification of green tea-containing standard reference materials.
abstract: A suite of three green tea-containing Standard Reference Materials (SRMs) has been issued by the National Institute of Standards and Technology (NIST): SRM 3254 Camellia sinensis (Green Tea) Leaves, SRM 3255 Camellia sinensis (Green Tea) Extract, and SRM 3256 Green Tea-Containing Solid Oral Dosage Form. The materials are characterized for catechins, xanthine alkaloids, theanine, and toxic elements. As many as five methods were used in assigning certified and reference values to the constituents, with measurements carried out at NIST and at collaborating laboratories. The materials are intended for use in the development and validation of new analytical methods, and for use as control materials as a component in the support of claims of metrological traceability.
authors: Analytical Chemistry Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899-8392, USA. lane.sander@nist.gov
authors: L C
authors: LC
authors: Sander
authors: M
authors: M
authors: Bedner
authors: M C
authors: MC
authors: Tims
authors: J H
authors: JH
authors: Yen
authors: D L
authors: DL
authors: Duewer
authors: B
authors: B
authors: Porter
authors: S J
authors: SJ
authors: Christopher
authors: R D
authors: RD
authors: Day
authors: S E
authors: SE
authors: Long
authors: J L
authors: JL
authors: Molloy
authors: K E
authors: KE
authors: Murphy
authors: B E
authors: BE
authors: Lang
authors: R
authors: R
authors: Lieberman
authors: L J
authors: LJ
authors: Wood
authors: M J
authors: MJ
authors: Payne
authors: M C
authors: MC
authors: Roman
authors: J M
authors: JM
authors: Betz
authors: A
authors: A
authors: NguyenPho
authors: K E
authors: KE
authors: Sharpless
authors: S A
authors: SA
authors: Wise
mesh_terms: D028241:Camellia sinensis / Q000737:chemistry*; D005504:Food Analysis / Q000379:methods / Q000592:standards*; D012015:Reference Standards; D013662:Tea / Q000737:chemistry*
chemical_list: D013662:Tea