Bioconversion of chicken meat and bone meal by black soldier fly larvae: Effects of straw addition on the quality and microbial profile of larval frass

Wu, Nan; Wang, Xiaobo; Mao, Zhiyue; Liang, Jiaqi; Liu, Xinyuan; Xu, Xiao

doi:10.1016/j.jenvman.2022.114579

Cited by 22 publications

(15 citation statements)

References 38 publications

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“…On September 2020, four treatments were carried out by adding 0%, 1%, 2% and 3% of rice straw (w/w) into fish MBM, namely control check (CK), T1, T2 and T3, respectively. Considering the conversion rates of raw rice straw by BSFL were low and the digestion period was long (C. Liu et al, 2021;Manurung et al, 2016;Wu et al, 2022), only a small amount of rice straw was added into MBM substrate. Each treatment was repeated in triplicate, and a total of 12 tests were performed.…”

Section: Methodsmentioning

confidence: 99%

“…Considering the conversion rates of raw rice straw by BSFL were low and the digestion period was long (C. Liu et al, 2021; Manurung et al, 2016; Wu et al, 2022), only a small amount of rice straw was added into MBM substrate. Each treatment was repeated in triplicate, and a total of 12 tests were performed.…”

Section: Methodsmentioning

confidence: 99%

“…Fourier transform infrared (FTIR) spectrometry (PerkinElmer, Inc., USA) was used to scan the organic functional groups in BSFL frass (Wu et al, 2022). Samples were placed in sample cell and scanned in the wavelength range of 400–4000 cm −1 with the following parameters: resolution of 8 cm −1 , scan interval of 2 cm −1 and 64 repetitions for each sample.…”

Section: Methodsmentioning

confidence: 99%

“…It was presumably due to the formation of an oily film on top of the substrate containing large amounts of fish waste, which further prevented BSFL from breathing. Accordingly, rice straw, a common agricultural waste, was used as a loosening agent to increase the porosity of MBM substrate and to provide a better growth environment for larvae (Wu et al, 2022), just as rice bran did in MBM (X. Zhang et al, 2021a).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the conversion rates of raw rice straw by BSFL were low (C. Liu et al, 2021; Manurung et al, 2016; Wu et al, 2022), too much straw addition into MBM substrate might affect BSFL transformation rate. Further studies to understand the influence of straw addition into fish MBM on BSFL growth and conversion efficiency are necessary.…”

Section: Introductionmentioning

confidence: 99%

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Effects of straw addition on the physicochemical and microbial features of black soldier fly larvae frass derived from fish meat and bone meal

Liang

Cheng

et al. 2023

Waste Manag Res

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Black soldier fly larvae (BSFL) hold great promise for sustainable management of meat and bone meal (MBM), a kind of organic waste. Harvested BSFL frass can be used as soil amendment or organic fertilizer. This study evaluated the quality and microbial profile in the frass of BSFL, fed with fish MBM containing 0% (CK), 1% (T1), 2% (T2) and 3% (T3) of rice straw. Results suggested straw addition into fish MBM had no significant impacts on BSFL weight; however, straw addition remarkably affected waste reduction and conversion efficiency, as well as physicochemical properties including electric conductivity, organic matter (OM) and total phosphorus contents in frass. Fourier transform infrared analysis indicated that increasing levels of cellulose and lignin might not be fully degraded or transformed by BSFL when more straw was introduced into substrates. Straw addition had hardly significant influences on microbial richness or evenness in BSFL frass, only T3 treatment remarkably elevated the phylogenetic diversity value more than the control. Bacteroidetes, Proteobacteria, Actinobacteria and Firmicutes were the most dominant phyla. Genera Myroides, Acinetobacter and Paenochrobactrum maintained high abundances in all frass samples. Elements including OM, pH and Na were key factors in shaping the microbiological characteristics of BSFL frass. Our findings helped to understand the effects of fish MBM waste manipulation on BSFL frass qualities and contributed to the further application of BSFL frass.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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