The effects of feeds containing several food by‐products on the fatty acid compositions of Hermetia illucens larvae were studied. Coconut, tomato, apple, and viscera by‐products, as well as combinations of control feed containing carbohydrate‐rich additives were assayed. Final live weight (mg) and daily growth coefficient (%/day) ranged from 41 and 0.548 (tomato) to 93 and 1.292 (coconut), respectively. Oils containing lauric acid were obtained from larvae‐fed vegetable by‐products, especially those fed feed containing apple, coconut, and tomato (65.3, 54.4 and 52.3% of total fatty acids, respectively). Feed containing apple and a 1:1 (w/w) mix of control feed and apple by‐products yielded the highest proportion of fatty acids in the larvae (23.5 and 15.6 g fatty acids/100 g fresh larvae, respectively). The properties of biodiesel that could be produced from larvae fatty acids were calculated and the following values were obtained: cetane number (58.5–60.2), higher heating value (38.3–39.0 MJ·kg⁻¹), density (0.869–0.873 g·cm⁻³), and induction period, an index of oxidation stability (8.4–150 hours). Such values were within the ranges specified by the ASTM D6751 and Europe EN 14214:2008 standards, while values for cold filter plugging point (−9.6 to 2.8 °C) were adequate for biodiesels intended for use in temperate climates. However, values for kinematic viscosity (2.93–3.58 mm²·s⁻¹) were slightly below the requirements of EN 14214:2008 (3.5–5.0). Overall, larvae fed food by‐products produced lauric acid‐rich oils, and the calculated properties of the oils were largely suitable for biodiesel production.

中文翻译：

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Hermetia illucens幼虫作为活的生物反应器，可同时进行食品副产品回收和有用油生产

含几种食品副产物的饲料对Hermetia illucens脂肪酸组成的影响研究了幼虫。测定了椰子，番茄，苹果和内脏副产品，以及含丰富碳水化合物添加剂的对照饲料的组合。最终活体重（mg）和每日生长系数（％/天）分别从41和0.548（番茄）到93和1.292（椰子）。含有月桂酸的油是从幼虫喂养的蔬菜副产品中获得的，尤其是那些含有苹果，椰子和番茄的饲料（分别占总脂肪酸的65.3％，54.4％和52.3％）。含苹果的饲料以及对照饲料和苹果副产品的1：1（w / w）混合物在幼虫中产生的脂肪酸比例最高（分别为23.5和15.6 g脂肪酸/ 100 g新鲜幼虫）。计算了可以由幼虫脂肪酸生产的生物柴油的特性，并获得了以下值：十六烷值（58。^-1），密度（0.869-0.873 g·cm ^-3）和诱导期，氧化稳定性指标（8.4-150小时）。这些值在ASTM D6751和欧洲EN 14214：2008标准规定的范围内，而冷滤器堵塞点（-9.6至2.8°C）的值对于打算在温带气候中使用的生物柴油是足够的。但是，运动粘度值（2.93-3.58 mm ² ·s ^-1）略低于EN 14214：2008的要求（3.5-5.0）。总体而言，以幼虫为食的食品副产品生产的是富含月桂酸的油，其油的计算特性在很大程度上适合于生物柴油的生产。