Department of Microbial and Molecular Systems, Faculty of Engineering Technology, Research Group for Insect Production and Processing, KU Leuven - Campus Geel, Kleinhoefstraaat 4, 2440, Geel, Belgium.
Department of Pharmaceutical Sciences, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Toxicological Centre, University of Antwerp - Campus Drie Eiken, Universiteitsplein 1, 2610, Wilrijk, Belgium.
Sci Rep. 2023 Mar 16;13(1):4341. doi: 10.1038/s41598-023-31176-9.
Black soldier fly (BSF) larvae (Hermetia illucens) are voracious feeders that can be reared on food waste streams originating from the food industry and retailers. Because these food waste streams are automatically being unpacked in substantial amounts, they can contain microplastics, potentially jeopardising the larvae's chemical safety when applied as compound feed ingredients. During this study, the dynamics of ingestion and excretion of microplastics by BSF larvae reared on substrates containing different contents (w = 0.00, 0.01, 0.10, 0.50, 1.00, 3.00%) of fluorescent blue-labelled microplastics (median size, Dv(50) = 61.5 µm) were monitored. To correlate the particle size with their uptake, larval mouth opening dimensions were measured during the rearing process. In conclusion, it appeared that ingestion of microplastics by BSF larvae depends on initial particle load, mouth size, and consequently also age. The larvae took up between 131 (w = 0.01%) and 4866 (w = 3.00%) particles leading to bioaccumulation factors (BAF) between 0.12 (w = 3.00%) and 1.07 (w = 0.01%). Larvae also appeared to excrete the microplastics, lowering the BAFs to values between 0.01 (w = 3.00%) and 0.54 (w = 0.01%).
黑水虻（BSF）幼虫（Hermetia illucens）是贪婪的食者，可以在食品工业和零售商产生的食物废物流上饲养。由于这些食物废物流自动以大量形式被打开，它们可能含有微塑料，当用作复合饲料成分时，可能危及幼虫的化学安全性。在这项研究中，监测了在含有不同含量（w = 0.00、0.01、0.10、0.50、1.00、3.00%）荧光蓝色标记微塑料（中值粒径，Dv（50）= 61.5 µm）的基质上饲养的 BSF 幼虫对微塑料的摄取和排泄动力学。为了将粒径与吸收相关联，在饲养过程中测量了幼虫的口张开尺寸。总之，似乎 BSF 幼虫对微塑料的摄取取决于初始颗粒负荷、口大小，因此也取决于年龄。幼虫摄取了 131 个（w = 0.01%）到 4866 个（w = 3.00%）颗粒，导致生物积累因子（BAF）在 0.12（w = 3.00%）和 1.07（w = 0.01%）之间。幼虫似乎也排泄了微塑料，将 BAF 值降低到 0.01（w = 3.00%）和 0.54（w = 0.01%）之间。
