Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland.
Eur J Clin Nutr. 2010 Nov;64 Suppl 3:S68-72. doi: 10.1038/ejcn.2010.214.
BACKGROUND/OBJECTIVES: The glycaemic index (GI) is used to describe the blood glucose-raising potential of carbohydrate-containing foods. Only a few descriptions of the addition of GI values to national food composition databases (FCDBs) exist. We tested whether the value documentation framework established within the European Food Information Resource (EuroFIR) Network could be used for GI values when adding them to the Finnish FCDB.
The list of foods requiring GI values was based on the National FINDIET 2007 Survey data and extended with foods encoded in a food-frequency questionnaire used in other nationally representative studies. The minimum quality of GI measurements was verified when gathering values from various sources, using earlier defined criteria. If a measured GI value for a food was directly available, or could be imputed or estimated, the value was added to the Finnish FCDB and documented using core standard vocabularies of EuroFIR. The GI values of composite foods were calculated using recipe calculation software.
A total of 2210 foods required a GI value. GI values for 1322 foods were available and added to the FCDB. The remaining 888 foods were composite foods and received a GI value through recipe calculation. The standard vocabularies describing the origin of the GI values, the methods used in their derivation and their qualitative characteristics were suitable for GI values.
GI values can be added to FCDBs and documented using terms similar to those used for traditional food composition data. Standardised value documentation may provide transparency for GI database compilation processes.
背景/目的：血糖指数（GI）用于描述含碳水化合物食物对血糖的升高作用。目前仅有少量关于在国家食物成分数据库（FCDB）中添加 GI 值的描述。本研究旨在检验在向芬兰 FCDB 添加 GI 值时，能否使用欧洲食物信息资源（EuroFIR）网络建立的数值文档框架。
需要 GI 值的食物清单基于 2007 年全国 FINDIET 调查数据，并通过其他具有全国代表性的研究中使用的食物频率问卷中编码的食物进行扩展。在从各种来源收集数值时，使用之前定义的标准验证 GI 测量的最低质量。如果一种食物的测量 GI 值可直接获得，或者可以内插或估计，则将该值添加到芬兰 FCDB 中，并使用 EuroFIR 的核心标准词汇进行记录。复合食物的 GI 值通过食谱计算软件进行计算。
共有 2210 种食物需要 GI 值。可获得 1322 种食物的 GI 值并添加到 FCDB 中。其余 888 种食物为复合食物，通过食谱计算获得 GI 值。描述 GI 值来源、推导方法及其定性特征的标准词汇适用于 GI 值。
可以使用类似于传统食物成分数据的术语向 FCDB 添加 GI 值并进行记录。标准化数值文档可为 GI 数据库编制过程提供透明度。
