饥饿对食用蟋蟀脂肪含量和微生物负荷的影响（Achetadomesticus）,Journal of Insects as Food and Feed

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饥饿对食用蟋蟀脂肪含量和微生物负荷的影响（Achetadomesticus）
Journal of Insects as Food and Feed ( IF 4.7 ) Pub Date : 2021-06-09 , DOI: 10.3920/jiff2020.0157
A.C. Inácio _{1,

2} , I. Vågsholm ₂ , A. Jansson ₃ , M. Vaga ₃ , S. Boqvist ₂ , M.J. Fraqueza ₁

Affiliation

全世界对昆虫作为食物的兴趣正在增加，特别是在工业化国家。以昆虫为基础的成分在欧洲被认为是新型食品，食品安全方面存在未解决的问题。昆虫中的微生物数量可能很高，对消费者构成潜在的健康风险，并可能导致腐败微生物迅速变质。在杀死之前通过饥饿排空肠道可以减少昆虫肠道中的微生物负荷，但也可能导致脂肪损失和能量含量降低，从而降低生产的盈利能力。本研究评估了家蟋蟀（Achetadomesticus）的微生物负荷（总需氧量（TAC），肠杆菌科）) 饥饿 0 小时（对照）、24 小时和 48 小时，以及相应的脂肪损失。与对照组相比，24 小时饥饿组的肠杆菌科细菌计数显着降低（P = 0.004），为 1 log cfu/g，但未显示 TAC。与对照组相比，48 小时饥饿组的TAC 显着增加（P = 0.002），几乎增加了 1 log cfu/g。昆虫的性别对微生物数量没有显着影响（TAC 和肠杆菌科分别为P =0.72 和P =0.46 ）。饥饿 24 小时会降低蟋蟀的脂肪含量（P=0.02)，表明潜在的生产损失。这表明饥饿不是减少可食用蟋蟀中微生物负荷的有效方法。

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Impact of starvation on fat content and microbial load in edible crickets (Acheta domesticus)

Interest in insects as food is increasing worldwide, particularly in industrialised countries. Insect-based ingredients are considered novel foods in Europe and there are unresolved concerns regarding food safety. Microbial counts in insects can be high, posing potential health risks to consumers and possibly causing rapid deterioration by spoilage microorganisms. Gut emptying by starvation prior to killing could reduce the microbial load in the insect gut but could also lead to fat loss and lower energy content, reducing the profitability of production. This study evaluated the microbial load (total aerobic counts (TAC), Enterobacteriaceae) in house crickets (Acheta domesticus) starved for 0 h (control), 24 h, and 48 h, and the corresponding fat losses. The 24 h starvation group showed significantly lower (P=0.004) Enterobacteriaceae counts of one log cfu/g, but not TAC, (compared to the control group). TAC was significantly increased (P=0.002), by almost one log cfu/g in the 48 h starvation group compared with the control. Sex of the insects had no significant effect on microbial numbers (P=0.72 and P=0.46 for TAC and Enterobacteriaceae, respectively). Starvation for 24 h decreased fat content in crickets (P=0.02), indicating potential production losses. This shows that starvation is not an effective method for reducing microbial loads in edible crickets.

更新日期：2021-06-09

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