Abstract：
Dietary oils─rich in omega-3, -6, and -9 fatty acids─exhibit critical impacts on health parameters such as cardiovascular function, bodily inflammation, and neurological development. There has emerged a need for low-cost, accessible method to assess dietary oil consumption and its health implications. Existing methods typically require specialized, complex equipment and extensive sample preparation steps, rendering them unsuitable for home use. Addressing this gap, herein, we study passive wireless, biocompatible biosensors that can be used to monitor dietary oils directly from foods either prepared or cooked in oil. This design uses broad-coupled split ring resonators interceded with porous silk fibroin biopolymer (requiring only food-safe materials, such as aluminum foil and biopolymer). These porous biopolymer films absorb oils at rates proportional to their viscosity/fatty acid composition and whose response can be measured wirelessly without any microelectronic components touching food. The engineering and mechanism of such sensors are explored, alongside their ability to measure the oil presence and fatty acid content directly from foods. Its simplicity, portability, and inexpensiveness are ideal for emerging needs in precision nutrition─such sensors may empower individuals to make informed dietary decisions based on direct-from-food measurements.
摘要：
富含omega-3、-6和-9脂肪酸的膳食油脂对心血管功能等健康参数具有重要影响，身体发炎,和神经发育。出现了对低成本的需求，评估膳食油脂消耗及其健康影响的可利用方法。现有的方法通常需要专门的，复杂的设备和大量的样品制备步骤，使它们不适合家庭使用。解决这个差距，在这里，我们研究无源无线，生物相容性生物传感器，可用于直接从准备的或在油中烹饪的食物中监测膳食油。此设计使用宽耦合的开口环谐振器，并与多孔丝素蛋白生物聚合物（仅需要食品安全材料，如铝箔和生物聚合物)。这些多孔生物聚合物膜以与其粘度/脂肪酸组成成比例的速率吸收油,并且其响应可以在没有任何微电子元件接触食物的情况下无线测量。探索了此类传感器的工程和机理，以及它们直接从食物中测量油的存在和脂肪酸含量的能力。它的简单性，便携性,廉价是精确营养新兴需求的理想选择──这种传感器可以使个人能够根据直接来自食物的测量结果做出明智的饮食决定。
