Standardisation of fermented pellet feed of Tenebrio molitor larvae for use as a biodiesel raw material

IF 4.7 3区农林科学 Q1 ENTOMOLOGY

Journal of Insects as Food and Feed Pub Date : 2023-11-09 DOI:10.1163/23524588-20230091

D. Hwang, S.H. Lee, T.-W. Goo, K.-S. Lee, E.-Y. Yun

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引用次数: 0

Abstract

To use mealworm (Tenebrio molitor larva) as a raw material for biodiesel production, after selecting three raw materials (wheat bran, mealworm frass, food waste) among 10 raw materials, WB50-FW50 (wheat bran:food waste = 50:50), which had the highest weight gain rate (WGR) and body fat content increase efficacy, was determined to be the optimal raw material combination. As a result of fermenting WB50-FW50 using microorganisms (Limosilactobacillus fermentum, Lactobacillus acidophilus, and Pediococcus acidilactici) with excellent enzymatic activities to increase the absorption rate in the body, WGR was increased by 40% compared to non-fermented WB50-FW50. To increase the value of the product and the convenience of distribution and use, we attempted to manufacture a pellet-type feed with a diameter of 6 mm and length of 10 mm. Based on the selection of inexpensive raw materials without adversely affecting viability and WGR, 0.05% sorbic acid was added as a preservative, and 20% agar was added as an excipient. The drying time after pellet moulding was determined to be 50 min, considering the high WGR, and the final pellet-type fermented mixed feed with sorbic acid and agar (PFMF) preparation was completed. Finally, compared to powdered wheat bran, a conventional mealworm feed, PFMF fed to mealworms increased WGR by 25.6% and body fat content by 18.8%. In conclusion, we suggest that the PFMF is a valuable feed with high economic feasibility, eco-friendliness, and convenience for breeding of mealworms for biodiesel production.

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作为生物柴油原料使用的天牛幼虫发酵颗粒饲料的标准化

以黄粉虫（Tenebrio molitor larva）为原料生产生物柴油，在 10 种原料中选择了 3 种原料（麦麸、黄粉虫虫体残渣、食物残渣）后，确定增重率（WGR）和体脂含量增加效果最高的 WB50-FW50（麦麸：食物残渣=50:50）为最佳原料组合。利用具有优良酶活性的微生物（发酵乳杆菌、嗜酸乳杆菌和酸性球菌）对 WB50-FW50 进行发酵，以提高其在体内的吸收率，结果与未发酵的 WB50-FW50 相比，增重率提高了 40%。为了提高产品价值并方便销售和使用，我们尝试生产直径为 6 毫米、长度为 10 毫米的颗粒饲料。在选择廉价原料的基础上，在不影响活力和 WGR 的情况下，添加了 0.05% 的山梨酸作为防腐剂，并添加了 20% 的琼脂作为赋形剂。考虑到较高的 WGR，确定颗粒成型后的干燥时间为 50 分钟，最终完成了山梨酸和琼脂颗粒型发酵混合饲料（PFMF）的制备。最后，与传统的黄粉虫饲料麦麸粉相比，黄粉虫饲喂 PFMF 可使 WGR 提高 25.6%，体脂含量提高 18.8%。总之，我们认为 PFMF 是一种有价值的饲料，具有较高的经济可行性、生态友好性和养殖黄粉虫生产生物柴油的便利性。

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来源期刊

Journal of Insects as Food and Feed Agricultural and Biological Sciences-Insect Science

CiteScore

7.00

自引率

17.60%

发文量

133

期刊介绍： The Journal of Insects as Food and Feed covers edible insects from harvesting in the wild through to industrial scale production. It publishes contributions to understanding the ecology and biology of edible insects and the factors that determine their abundance, the importance of food insects in people’s livelihoods, the value of ethno-entomological knowledge, and the role of technology transfer to assist people to utilise traditional knowledge to improve the value of insect foods in their lives. The journal aims to cover the whole chain of insect collecting or rearing to marketing edible insect products, including the development of sustainable technology, such as automation processes at affordable costs, detection, identification and mitigating of microbial contaminants, development of protocols for quality control, processing methodologies and how they affect digestibility and nutritional composition of insects, and the potential of insects to transform low value organic wastes into high protein products. At the end of the edible insect food or feed chain, marketing issues, consumer acceptance, regulation and legislation pose new research challenges. Food safety and legislation are intimately related. Consumer attitude is strongly dependent on the perceived safety. Microbial safety, toxicity due to chemical contaminants, and allergies are important issues in safety of insects as food and feed. Innovative contributions that address the multitude of aspects relevant for the utilisation of insects in increasing food and feed quality, safety and security are welcomed.