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首页> 外文会议>Optical diagnostics and sensing XVIII: Toward Point-of-Care Diagnostics >Differential color space analysis for investigating nutrient content in a pureed food dilution-flavor matrix: a step toward objective malnutrition risk assessment
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Differential color space analysis for investigating nutrient content in a pureed food dilution-flavor matrix: a step toward objective malnutrition risk assessment

机译：差异色空间分析，用于研究食品稀释液-调味品基质中的营养成分：迈向客观营养不良风险评估的一步

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摘要

Dysphagia (swallowing difficulty) increases risk for malnutrition and affects at least 15% of American older adults, and 590 million people worldwide. Malnutrition is associated with increased mortality, increased morbidity, decreased quality of life, and accounts for over $15 billion (USD) health-care related costs each year. While modified texture diets (e.g., pureed food) reduce the risk of choking, quality assurance is necessary for monitoring nutrient density to ensure food meets nutritional requirements. However, current methods are subjective and time consuming. The purpose of this study was to investigate the feasibility of optical techniques for an objective assessment of food nutrient density in pureed samples. Motivated by a theoretical optical dilution model, broadband spectral images of commercially prepared puree samples were acquired. Specifically, 13 flavors at five dilutions relative to initial concentration, each with six replicates, were acquired for a total of 390 samples. Puree samples were prepared and loaded onto a white reflectance back plane to maximize photon traversal path length through the puree. The sample was illuminated with a tungsten-halogen illumination source fitted with a front glass fabric diffuser for spatially homogeneous illumination. This broadband illuminant was chosen to observe as many food-light spectral absorbance interactions as possible. Flavor-stratified correlation analysis was performed on this food image dataset to investigate the relationship between nutritional information and color space transformations. A special case of blueberry is presented as the effect of anthocyanins was quantitatively observed through normalized spectral trends in response to pH perturbations across dilutions.
机译：吞咽困难（吞咽困难）会增加营养不良的风险，并影响至少15％的美国老年人和全世界5.9亿人。营养不良与死亡率增加，发病率增加，生活质量下降有关，每年造成的医疗保健相关费用超过150亿美元。改良质地的饮食（例如，果泥食品）可降低窒息的风险，但质量监控对于监测营养素密度以确保食物满足营养要求是必要的。但是，当前的方法是主观的且耗时的。这项研究的目的是研究光学技术用于客观评估菜泥样品中食物营养成分密度的可行性。根据理论上的光学稀释模型，可以获取商业制备的果泥样品的宽带光谱图像。具体而言，获得了390种样品，相对于初始浓度有5种稀释度的13种风味剂，每种都有6个重复。准备果泥样品并将其加载到白色反射率背板上，以使通过果泥的光子遍历路径长度最大化。样品用装有前玻璃纤维布漫射器的卤素钨灯照明，以进行空间均匀照明。选择该宽带光源以观察尽可能多的食物-光谱吸收度相互作用。对食物图像数据集进行了风味分层相关分析，以研究营养信息与色彩空间转换之间的关系。蓝莓是一种特殊情况，因为花青素的作用是通过标准化光谱趋势定量地观察到的，这些花色趋势是响应于各稀释液的pH扰动而产生的。

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