Effect of larval instar and post-harvest treatments on heavy metals in BSFL and frass reared on commercial food waste streams

IF 2.6 3区 农林科学 Q2 FOOD SCIENCE & TECHNOLOGY International Journal of Food Science & Technology Pub Date : 2024-09-10 DOI:10.1111/ijfs.17511
Shanmugam Alagappan, Sam Mallard, Daniel Cozzolino, Deirdre Mikkelsen, Peter James, Sandra Olarte Mantilla, Olympia Yarger, Louwrens Hoffman
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Abstract

The use of black soldier fly larvae (BSFL) to valorise different organic waste streams and the subsequent use of resulting larvae as a feedstock ingredient is increasing rapidly in several regions across the globe. The lack of knowledge about several safety issues including chemical contaminants (e.g. heavy metals) seems to affect the upscaling and commercialisation of this product. This study evaluates the safety of the BSFL against chemical contaminants including heavy metals and mycotoxins in both BSFL and frass samples reared with different food waste streams (e.g. soy waste, customised bread-vegetable diet, food waste mixture, supermarket and childcare centre) from two commercial production facilities. The effect of larval instars and post-harvest treatments (e.g. blanching and drying) on the safety of the BSFL was also investigated. The concentration of heavy metals was primarily influenced by the concentration in the food waste streams. The concentration was also higher in 6th instar compared to 5th instar larvae. The effect of blanching and drying have a varied effect on the concentration of heavy metals. Mycotoxins were found to be below the limit of quantification for all samples. The outcomes of this study indicated that BSFL grown on food waste streams and the resulting frass is safe against different heavy metals analysed. The findings of this study will assist the commercial BSFL manufacturers with the identification of relevant control points to ensure the chemical safety of their products. Therefore, encourage the use of different food waste streams as feedstock for rearing BSFL.

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幼虫龄期和收获后处理对在商业食物垃圾流中饲养的 BSFL 和碎屑中重金属的影响
摘要在全球多个地区,使用黑翅大实蝇幼虫(BSFL)对不同的有机废物流进行增值处理,并随后使用由此产生的幼虫作为原料成分的做法正在迅速增加。对包括化学污染物(如重金属)在内的一些安全问题缺乏了解似乎影响了该产品的推广和商业化。本研究评估了 BSFL 对化学污染物(包括重金属和霉菌毒素)的安全性,这些污染物包括用两个商业生产设施中的不同食物废料流(如大豆废料、定制面包-蔬菜日粮、食物废料混合物、超市和托儿所)饲养的 BSFL 和碎屑样品。此外,还研究了幼虫龄期和收获后处理(如焯水和干燥)对 BSFL 安全性的影响。重金属的浓度主要受食物垃圾流中重金属浓度的影响。与五龄幼虫相比,六龄幼虫体内的浓度也更高。焯水和干燥对重金属浓度的影响各不相同。所有样本的霉菌毒素含量均低于定量限。研究结果表明,在食物垃圾流中生长的 BSFL 及其产生的粪便对所分析的各种重金属都是安全的。这项研究的结果将有助于商业 BSFL 生产商确定相关控制点,以确保其产品的化学安全性。因此,鼓励使用不同的厨余作为饲养 BSFL 的原料。
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来源期刊
CiteScore
5.80
自引率
9.10%
发文量
655
审稿时长
2.9 months
期刊介绍: The International Journal of Food Science & Technology (IJFST) is published for the Institute of Food Science and Technology, the IFST. This authoritative and well-established journal publishes in a wide range of subjects, ranging from pure research in the various sciences associated with food to practical experiments designed to improve technical processes. Subjects covered range from raw material composition to consumer acceptance, from physical properties to food engineering practices, and from quality assurance and safety to storage, distribution, marketing and use. While the main aim of the Journal is to provide a forum for papers describing the results of original research, review articles are also welcomed.
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