ISO/TR 23304:2021 PDF

Name: ISO/TR 23304:2021 — Food products — Guidance on how to express vitamins and their vitamers content
SKU: ISO/TR 23304:2021
Price: 25 EUR
Availability: InStock

Food products — Guidance on how to express vitamins and their vitamers content

Название (английский):

ISO/TR 23304:2021

Food products — Guidance on how to express vitamins and their vitamers content

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 21
Дата публикации:: 18 мая 2021 г.
Издание:: ISO TR 23304 edition 1 version 1
ICS:: 67.040

Тип поставки:

Full version315 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:315 €

Описание (английский):

This document provides guidelines on: — how to express vitamin quantity, — the expression of different molecular forms in appropriate units, — and in some cases, vitamin activity, according to vitamers present or used in food products, in addition to the quantitative content determination obtained from ISO and CEN analytical standards. It provides information to be used as a basis for discussion between stakeholders and food control laboratories. It is not intended to be prescriptive or exhaustive.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TR 23304:2021 - Food products - Guidance on how to express vitamins and their vitamers content provides practical guidance for expressing vitamin quantities and the different molecular forms (vitamers) found in foods. It clarifies how to report vitamin mass, when to express vitamin activity, and how to interpret results from ISO and CEN analytical standards. The report is intended as a discussion basis between stakeholders and food control laboratories; it is informative rather than prescriptive or exhaustive.

Key technical topics and requirements

Scope and purpose

Guidance on how to express vitamin quantity, vitamers’ molecular forms in appropriate units, and, where relevant, vitamin activity.
No normative references; intended to harmonize reporting and reduce misinterpretation.

Definitions

Clear definition of a vitamer: different chemical compounds of a vitamin with biological activity.

Vitamin-specific guidance

Detailed recommendations per vitamin (Vitamin E first, then other fat‑soluble and water‑soluble vitamins). Topics include expression units, conversion factors, and when activity equivalents should be used.

Vitamin E complexity (illustrative example)

Discusses differences between natural D‑alpha‑tocopherol and synthetic D,L‑alpha‑tocopherol, tocopherol esters and tocotrienols.
Presents commonly used conversion factors and example calculations to convert measured mass into vitamin activity equivalents (e.g., mg alpha‑TE), and procedures when the molecular form is unknown.
Describes two analytical approaches: saponification + HPLC (EN 12822) and direct extraction + HPLC (ISO 20633), and how method choice affects expression of results.

Regulatory and regional considerations

Reviews conversion factors and labelling units across regions and standards (EU, US FDA, CODEX, FSANZ, GB China), noting that labelling conventions differ internationally.

Practical applications and who uses this standard

Food control laboratories - harmonize reporting of vitamin analyses, interpret analytical results in the context of regional labelling and fortification rules.

Food manufacturers and formulators - convert ingredient/vitamer additions into label‑claim units and ensure compliance with fortification regulations.

Regulators and enforcement bodies - assess lab results for conformity with national or regional rules.

Nutrition scientists and database compilers - standardize nutrient composition databases by consistent expression of vitamers and vitamin activity.

Quality assurance teams - reduce misinterpretation when analytical methods do not distinguish between stereoisomers or esters.

Related standards and guidance

ISO and CEN analytical methods (e.g., EN 12822, ISO 20633) - used to generate quantitative data that ISO/TR 23304:2021 helps to interpret.

Regional regulations and standards: EU regulations (e.g., Regulation (EU) No 609/2013, Regulation (EC) No 1925/2006, Directive 2002/46/EC), US FDA guidance, CODEX, FSANZ, and national standards (GB).

Keywords: ISO/TR 23304:2021, vitamins, vitamers, vitamin E, labelling, vitamin activity, alpha‑tocopherol, analytical standards, food fortification, ISO, CEN.

ISO/TR 23304:2021 PDF

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications and who uses this standard

Related standards and guidance

Технические детали

BS ISO 20633:2015

Infant formula and adult nutritionals. Determination of vitamin E and vitamin A by normal phase high performa…

ISO 8689-1:2000

Water quality — Biological classification of rivers — Part 1: Guidance on the interpretation of biological qu…

ISO/ASTM51540-04(2012)

Standard Practice for Use of a Radiochromic Liquid Dosimetry System (Withdrawn 2020)

ISO/ASTM51204-04

Standard Practice for Dosimetry in Gamma Irradiation Facilities for Food Processing (Withdrawn 2013)

ISO/ASTM51431-05

Standard Practice for Dosimetry in Electron Beam and X-Ray (Bremsstrahlung) Irradiation Facilities for Food P…

ISO/ASTM52628-20e1

Standard Practice for Dosimetry in Radiation Processing

ISO/ASTM52921-13(2019)

Standard Terminology for Additive Manufacturing—Coordinate Systems and Test Methodologies

ISO/ASTMTR52917-EB

Additive Manufacturing — Round Robin Testing — General Guidelines