An assessment of the nutritional adequacy of scientifically published, plant-centric, modelled diets from a nutrient bioavailability perspective

可持续饮食旨在解决围绕当前粮食生产和消费模式日益增长的环境和健康问题。许多拟议的可持续饮食战略主张转向以植物为主的饮食。这些饮食的营养成分是使用当前的食物营养成分和公共卫生建议数据集建模的。支持者指出，这些以植物为基础的饮食营养丰富，适合所有生命阶段的人。然而，在以植物为中心的饮食的营养建模中，很少考虑营养生物利用度和氨基酸分布。许多因素可以影响必需营养素的生物利用度，例如食物基质，抗营养化合物的存在，储存，加工和烹饪方法。此外，植物蛋白质来源中不可或缺的氨基酸通常有限，并且比动物源性食品中的氨基酸更难消化。此外，人的消化、吸收和代谢营养的能力可能因生命阶段或现有疾病而存在固有差异，本项目将利用现有数据和实验室技术相结合，评估科学出版的、以植物为中心的、模拟饮食的氨基酸概况和营养生物利用度。这项研究的目的是确定是否坚持这些模拟饮食在其目前的形式可能会增加营养缺乏症的风险。如果发现是这种情况，目的是确定将解决任何营养不足的修改。对目前以植物为中心的模型饮食的任何改进建议都将考虑到可持续饮食的所有四个领域：营养，社会，经济和环境。

Sustainable diets are intended to address the growing environmental and health concerns surrounding current food production and consumption patterns. Many of the proposed strategies for sustainable diets advocate a switch to predominantly plant based diets. The nutrient profiles of these diets have been modelled using current datasets of food nutrient content and public health recommendations. Proponents state that these plant-based diets are nutritionally replete and suitable for people of all life stages.However, nutrient bioavailability and the amino acid profile have rarely been considered in the nutrient modelling of plant-centric diets. Numerous factors can affect the bioavailability of essential nutrients, such as the food matrix, presence of anti-nutritive compounds, storage, processing and cooking methods. Further, indispensable amino acids are often limited in plant sources of protein and are less digestible than those found in animal derived foods. In addition, there can be inherent variations in peoples ability to digest, absorb and metabolise nutrients as a result of life stage or existing illnesses.This project will use a combination of existing data and laboratory techniques to assess the amino acid profile and nutrient bioavailability aspects of scientifically published, plant-centric, modelled diets. The purpose of this research is to determine whether adherence to these modelled diets in their current form is likely to increase risk of nutrient deficiency. If this is found to be the case, the aim is to identify modifications that will address any nutrient inadequacies. Any suggested refinements to the current plant-centric modelled diets would be made with consideration for all four domains of sustainable diets: nutrition, society, economics and the environment.