BS ISO 13171:2016 pdf download

BS ISO 13171:2016 pdf download.Essential oil of oregano [Origanum vulgare L. subsp. hirtum (Link) letsw]
1 Scope
This International Standard specifies certain characteristics of the essential oil of oregano [Origanum vulgare L. subsp. hirtum (Link) letsw], in order to facilitate the assessment of its quality.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TS 210, Essential oils — General rules for packaging, conditioning and storage
ISO/TS 211, Essential oils — General rules for labelling and marking of containers
ISO 212, Essential oils — Sampling
ISO 279, Essential oils — Determination of relative density at 20 °C — Reference method
ISO 280, Essential oils — Determination of refractive index
ISO 592, Essential oils — Determination of optical rotation
ISO 875, Essential oils — Evaluation of miscibility in ethanol
ISO 11024 (all parts), Essential oils — General guidance on chromatographic profiles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 essential oil of oregano
essential oil obtained by steam distillation of the flowering tops of Origanum vulgare L. subsp. hirtum (Link) letsw, of the Lamiaceae family, growing mainly in Germany, Netherlands and Hungary
Note 1 to entry: For information on the CAS number, see ISO/TR 21092.
4 Requirements
4.1 Essential oil of oregano [Origanum vulgare L. subsp. hirtum (Link) letsw] shall meet the requirements as given in Table 1.
4.2 Carry out the analysis of the essential oil by gas chromatography. Determine the chromatographic profile in accordance with ISO 11024 (all parts). Identify in the chromatogram obtained, the representative and characteristic components shown in Table 2. The proportions of these components, indicated by the integrator, shall be as shown in Table 2. This constitutes the chromatographic profile of the essential oil.