果品营养价值“三度”评价法

针对目前果品营养价值评价中存在的概念不清、参照不明、指标与方法不统一等问题,提出果品营养价值的"三度"评价法。"三度"指的是果品中营养素的多样度、匹配度和平衡度。多样度表明其营养素种类的多少,匹配度检测各营养素含量的高低,平衡度评价各营养素间的比例关系。"三度"指数的计算基于人体每日对必需营养素的需求。因此,"三度"评价法揭示的是果品中含有的人体必需营养素及其与人体需求的关系。"三度"评价法是果品营养价值全面、系统和规范化评价的首次尝试,它为不同果品营养价值的比较,营养品质的分类、定级和质量监管提供了可能的途径。

On‘Three Degree’Method for the Evaluation of the Fruit Nutritive Values

In an attempt to solve the problems，such as concept confusion，no specified reference，no recognized method and standard，which were encountered in current studies of fruit nutrition values，we proposed a new‘Three Degree’（3D）method for future evaluation of fruit nutrition quality in this paper . By saying 3D，we mean the degree of diversity（DD），degree of match（DM）and degree of balance（DB）of the human essential nutrients contained in a fruit or its derived products. DD indicates the‘presence’or‘absence’of the different nutrients in a fruit，DM shows their percentages in meeting the daily needs of human body，and DB evaluates the‘ratio-relationships’among the nutrients. All 3D indices were calculated based on the daily human needs of the essential nutrients. Therefore，3D method revealed the relationship between the essential nutrients of a fruit or fruit product and their daily human needs. To our knowledge，this study was the first report on a comprehensive，systematic and normalized evaluation of fruit nutritive values. Our 3D index provided a potential new approach for the categorization，grading and control of fruit nutrition quality，and made it possible for a direct comparison of the nutritive values of different fruits and their derived products.