Department of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan.
Biomed Microdevices. 2012 Dec;14(6):1063-8. doi: 10.1007/s10544-012-9706-z.
In this paper, an insect biofuel cell (BFC) using trehalose included in insect hemolymph was developed. The insect BFC is based on trehalase and glucose oxidase (GOD) reaction systems which oxidize β-glucose obtained by hydrolyzing trehalose. First, we confirmed by LC-MS that a sufficient amount of trehalose was present in the cockroach hemolymph (CHL). The maximum power density obtained using the insect BFC was 6.07 μW/cm(2). The power output was kept more than 10 % for 2.5 h by protecting the electrodes with a dialysis membrane. Furthermore, the maximum power density was increased to 10.5 μW/cm(2) by using an air diffusion cathode. Finally, we succeeded in driving a melody integrated circuit (IC) and a piezo speaker by connecting five insect BFCs in series. The results indicate that the insect BFC is a promising insect-mountable battery to power environmental monitoring micro-tools.
本文开发了一种利用昆虫血淋巴中包含的海藻糖的昆虫生物燃料电池（BFC）。昆虫 BFC 基于海藻糖酶和葡萄糖氧化酶（GOD）反应系统，该系统氧化通过水解海藻糖获得的β-葡萄糖。首先，我们通过 LC-MS 确认了在蟑螂血淋巴（CHL）中存在足够量的海藻糖。使用昆虫 BFC 获得的最大功率密度为 6.07 μW/cm(2)。通过用透析膜保护电极，将电极保持超过 10 %的功率输出保持了 2.5 小时。此外，通过使用空气扩散阴极，将最大功率密度提高到 10.5 μW/cm(2)。最后，我们成功地通过将五个昆虫 BFC 串联连接来驱动旋律集成电路（IC）和压电扬声器。结果表明，昆虫 BFC 是一种很有前途的可用于为环境监测微工具供电的昆虫可安装电池。
