Reversing the nutrient drain through urban insect farming—opportunities and challenges

Yingyu Law; Leo Wein; Yingyu Law; Leo Wein

doi:10.3934/bioeng.2018.4.226

AIMS Bioengineering

2018, Volume 5, Issue 4: 226-237. doi: 10.3934/bioeng.2018.4.226

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Reversing the nutrient drain through urban insect farming—opportunities and challenges

Yingyu Law ^{1
,
,},
Leo Wein ²

1.
Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 637551, Singapore
2.
Protenga Pte. Ltd, Singapore

Received: 05 September 2018 Accepted: 19 November 2018 Published: 28 November 2018

Cities consume the majority of proteins produced globally but have unsustainable, linear food systems from production to consumption to disposal, resulting in significant nutrient losses. The industrial rearing of insects is a promising strategy for converting otherwise lost nutrients back into protein-rich animal feed and fertilizer, particularly to supplement local food production. The black soldier fly (BSF), Hermetia illucens, has been identified as a candidate for industrial rearing. BSF has a superior feed conversion ratio and cycle-time compared to other edible insects and can convert and recover nutrients from a vast variety of organic materials to protein, oil and chitin making it an attractive solution for the management of urban organic solid waste. With an increasing awareness of the environmental urgency and interest in the economic potential of the technology, this review discusses the technological factors confounding the upscaling of insect farming in urban and peri-urban contexts using BSF as a case study. These include the challenges of feed homogenisation and pre-treatment, of integrating insect life-cycle factors (e.g. mating) with bioprocess engineering concepts (which complicates automation), of meeting the nutritional requirements of the larvae at different stages of growth in order to maximize bioconversion and product quality, and of elucidating the impact of microbiome on complex behaviours and bioconversion. A multidisciplinary effort is therefore required to lead urban insect farming to full development to ultimately contribute to future food security.
- organic waste valorisation,
- nutrient recycling,
- animal feed,
- alternative protein source,
- process optimization,
- black soldier fly (BSF),
- fish meal replacement
Citation: Yingyu Law, Leo Wein. Reversing the nutrient drain through urban insect farming—opportunities and challenges[J]. AIMS Bioengineering, 2018, 5(4): 226-237. doi: 10.3934/bioeng.2018.4.226

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Abstract

Cities consume the majority of proteins produced globally but have unsustainable, linear food systems from production to consumption to disposal, resulting in significant nutrient losses. The industrial rearing of insects is a promising strategy for converting otherwise lost nutrients back into protein-rich animal feed and fertilizer, particularly to supplement local food production. The black soldier fly (BSF), Hermetia illucens, has been identified as a candidate for industrial rearing. BSF has a superior feed conversion ratio and cycle-time compared to other edible insects and can convert and recover nutrients from a vast variety of organic materials to protein, oil and chitin making it an attractive solution for the management of urban organic solid waste. With an increasing awareness of the environmental urgency and interest in the economic potential of the technology, this review discusses the technological factors confounding the upscaling of insect farming in urban and peri-urban contexts using BSF as a case study. These include the challenges of feed homogenisation and pre-treatment, of integrating insect life-cycle factors (e.g. mating) with bioprocess engineering concepts (which complicates automation), of meeting the nutritional requirements of the larvae at different stages of growth in order to maximize bioconversion and product quality, and of elucidating the impact of microbiome on complex behaviours and bioconversion. A multidisciplinary effort is therefore required to lead urban insect farming to full development to ultimately contribute to future food security.

References

[1]	Alexandratos N, Bruinsma J (2012) World agriculture towards 2030/2050: The 2012 revision. ESA Working Paper No. 12-03, Food and Agriculture Organization of the United Nations (FAO) , Rome.
[2]	Godfray HCJ, Beddington JR, Crute IR, et al. (2010) Food security: The challenge of feeding 9 billion people. Science 327: 812–818. doi: 10.1126/science.1185383
[3]	Oliva-Teles A, Enes P, Peres H (2015) Replacing fishmeal and fish oil in industrial aquafeeds for carnivorous fish, In: Davis DA, Feed and Feeding Practices in Aquaculture, 8 Eds., Oxford: Woodhead Publishing, 203–233.
[4]	Skøt J, Lipper L, Thomas G, et al. (2016) The state of food and agriculture: Climate change, agriculture and food security. Food and Agriculture Organization of the United Nations (FAO), Rome.
[5]	Food and Agriculture Organization of the United Nations (FAO) (2013) Food wastage footprint: Impact on natural resources. Summary report. Rome.
[6]	Tilman D, Fargione J, Wolff B, et al. (2001) Forecasting agriculturally driven global environmental change. Science 292: 281–284. doi: 10.1126/science.1057544
[7]	Zhao C, Liu B, Piao S, et al. (2017) Temperature increase reduces global yields of major crops in four independent estimates. P Natl Acad Sci USA 114: 9326–9331. doi: 10.1073/pnas.1701762114
[8]	Adhikari B, Barrington S, Martinez J (2009) Urban food waste generation: Challenges and opportunities. Int J Environ Waste Manage 3: 4–21. doi: 10.1504/IJEWM.2009.024696
[9]	Hoornweg D, Bhada-Tata P, Kennedy C (2013) Environment: Waste production must peak this century. Nature 502: 615–617. doi: 10.1038/502615a
[10]	Gustavsson J, Cederberg C, Sonesson U, et al. (2011) Global fodd losses and food waste. extent, causes and prevention. Food and Agriculture Organization of the United Nations (FAO), Rome, Italy.
[11]	Diener S, Zurbrügg C, Tockner K (2009) Conversion of organic material by black soldier fly larvae: Establishing optimal feeding rates. Waste Manag Res 27: 603–610. doi: 10.1177/0734242X09103838
[12]	St-Hilaire S, Sheppard C, Tomberlin JK, et al. (2007) Fly Prepupae as a Feedstuff for Rainbow Trout, Oncorhynchus mykiss. J World Aquacul Soc 38: 59–67. doi: 10.1111/j.1749-7345.2006.00073.x
[13]	Newton GL, Booram CV, Barker RW, et al. (1977) Dried Hermetia illucens larvae meal as a supplement for swine. J Anim Sci 44: 395–400. doi: 10.2527/jas1977.443395x
[14]	Lee J, Kim YM, Park YK, et al. (2018) Black soldier fly (Hermetia illucens) larvae enhances immune activities and increases survivability of broiler chicks against experimental infection of Salmonella Gallinarum. J Vet Med Sci 80: 736–740. doi: 10.1292/jvms.17-0236
[15]	Kupferschmidt K (2015) Feature: Why insects could be the ideal animal feed. Science.
[16]	Alltech (2017) 7th Annual Alltech Global Feed Survey 2018. Available from: https://go.alltech.com/alltech-feed-survey.
[17]	Gilbert R (2004) The world animal feed industry. Protein Sources for the Animal Feed Industry. Food and Agriculture Organization of the United Nations (FAO). Rome, Italy.
[18]	SEAFISH (2016) Fishmeal and fish oil facts and figures. Available from: http://www.seafish.org/media/Publications/SeafishFishmealandFishOilFactsandFigures_201612.pdf.
[19]	Food and Agriculture Organization of the United Nations (FAO) (2018)The State of World Fisheries and Aquaculture: Meeting the sustainable development goals. Rome.
[20]	Masuda T, Goldsmith PD (2009) World soybean production: Area harvested, yield, and long-term projections. Int Food Agribus Man 12: 143–163.
[21]	Department of Agriculture (US) (2018) Fish Meal Production by Country in 1000 MT. Available from: https://www.indexmundi.com/agriculture/?commodity=fish-meal: Index Mundi.
[22]	Tacon AGJ, Metian M (2008) Global overview on the use of fish meal and fish oil in industrially compounded aquafeeds: Trends and future prospects. Aquaculture 285: 146–158. doi: 10.1016/j.aquaculture.2008.08.015
[23]	Trostle R (2010) Global Agricultural Supply and Demand: Factors Contributing to the Recent Increase in Food Commodity Prices. Available from: https://www.hsdl.org/?abstract&did=485652.
[24]	Verkerk MC, Tramper J, van Trijp JCM, et al. (2007) Insect cells for human food. Biotechnol Adv 25: 198–202. doi: 10.1016/j.biotechadv.2006.11.004
[25]	Dobermann D, Swift JA, Field LM (2017) Opportunities and hurdles of edible insects for food and feed. Nutr Bull 42: 293–308. doi: 10.1111/nbu.12291
[26]	van Huis A (2013) Potential of insects as food and feed in assuring food security. Annu Rev Entomol 58: 563–583. doi: 10.1146/annurev-ento-120811-153704
[27]	Hilkens W, de Klerk B (2017) The cultivation of insects: A small sector with great opportunities. Netherlands: ABN AMRO and BOM.
[28]	Tomberlin JK, Sheppard DC, Joyce JA (2002) Selected Life-History Traits of Black Soldier Flies (Diptera: Stratiomyidae) Reared on Three Artificial Diets. Ann Entomol Soc Am 95: 379–386. doi: 10.1603/0013-8746(2002)095[0379:SLHTOB]2.0.CO;2
[29]	Sheppard C (1983) House Fly and Lesser Fly Control Utilizing the Black Soldier Fly in Manure Management Systems for Caged Laying Hens. Environ Entomol 12: 1439–1442. doi: 10.1093/ee/12.5.1439
[30]	Čičková H, Newton GL, Lacy RC, et al. (2015) The use of fly larvae for organic waste treatment. Waste Manage 35: 68–80. doi: 10.1016/j.wasman.2014.09.026
[31]	Nguyen TTX, Tomberlin JK, Vanlaerhoven S (2015) Ability of Black Soldier Fly (Diptera: Stratiomyidae) larvae to recycle food waste. Environ Entomol 44: 406–410. doi: 10.1093/ee/nvv002
[32]	Li W, Li Q, Zheng L, et al. (2015) Potential biodiesel and biogas production from corncob by anaerobic fermentation and black soldier fly. Bioresource Technol 194: 276–282. doi: 10.1016/j.biortech.2015.06.112
[33]	Spranghers T, Ottoboni M, Klootwijk C, et al. (2016) Nutritional composition of black soldier fly (Hermetia illucens) prepupae reared on different organic waste substrates. J Sci Food Agr 97: 2594–2600.
[34]	Cammack AJ, Tomberlin KJ (2017) The impact of diet protein and carbohydrate on select life-history traits of the black soldier fly Hermetia illucens (L.) (Diptera: Stratiomyidae). Insects 8: 56.
[35]	Cheng JYK, Chiu SLH, Lo IMC (2017) Effects of moisture content of food waste on residue separation, larval growth and larval survival in black soldier fly bioconversion. Waste Manage 67: 315–323.
[36]	Lardé G (1989) Investigation on some factors affecting larval growth in a coffee-pulp bed. Biol Wastes 30: 11–19. doi: 10.1016/0269-7483(89)90139-0
[37]	Gupta S, Lee JJL, Chen WN (2018) Analysis of improved nutritional composition of potential functional food (Okara) after probiotic solid-state fermentation. J Agr Food Chem 66: 5373–5381. doi: 10.1021/acs.jafc.8b00971
[38]	Jucker C, Erba D, Leonardi MG, et al. (2017) Assessment of vegetable and fruit substrates as potential rearing media for Hermetia illucens (diptera: stratiomyidae) larvae. Environ Entomol 46: 1415–1423. doi: 10.1093/ee/nvx154
[39]	Rehman Ku, Rehman A, Cai M, et al. (2017) Conversion of mixtures of dairy manure and soybean curd residue by black soldier fly larvae (Hermetia illucens L.). J Clean Prod 154: 366–373.
[40]	Tschirner M, Simon A (2015) Influence of different growing substrates and processing on the nutrient composition of black soldier fly larvae destined for animal feed. J Insects Food Feed 1: 249–259. doi: 10.3920/JIFF2014.0008
[41]	Ma J, Lei Y, Rehman KU, et al. (2018) Dynamic effects of initial pH of substrate on biological growth and metamorphosis of black soldier fly (Diptera: Stratiomyidae). Environ Entomol 47: 159–165. doi: 10.1093/ee/nvx186
[42]	Paz ASP, Carrejo NS, Rodríguez CHG (2015) Effects of larval density and feeding rates on the bioconversion of vegetable waste using black soldier fly larvae Hermetia illucens (L.), (Diptera: Stratiomyidae). Waste Biomass Valorization 6: 1059–1065. doi: 10.1007/s12649-015-9418-8
[43]	Harnden LM, Tomberlin JK (2016) Effects of temperature and diet on black soldier fly, Hermetia illucens (L.) (Diptera: Stratiomyidae), development. Forensic Sci Int 266: 109–116. doi: 10.1016/j.forsciint.2016.05.007
[44]	Liu X, Chen X, Wang H, et al. (2017) Dynamic changes of nutrient composition throughout the entire life cycle of black soldier fly. PLoS One 12: e0182601. doi: 10.1371/journal.pone.0182601
[45]	Dortmans B, Diener S, Verstappen B, et al. (2017) Black soldier fly biowaste processing. A step-by step guide.
[46]	Kok R (2017) Insect Production and Facility Design, In: Van Huis A, Tomberlin JK, Insects as food and feed: From production to consumption, 8 Eds., Wageningen: Wageningen Academic Publishers, 143–172.
[47]	Basset Y, Cizek L, Cuénoud P, et al. (2012) Arthropod diversity in a tropical forest. Science 338: 1481–1484. doi: 10.1126/science.1226727
[48]	Engel P, Moran NA (2013) The gut microbiota of insects-diversity in structure and function. FEMS Microbiol Rev 37: 699–735. doi: 10.1111/1574-6976.12025
[49]	The Human Microbiome Project C (2012) Structure, function and diversity of the healthy human microbiome. Nature 486: 207–214. doi: 10.1038/nature11234
[50]	Chaucheyras-Durand F, Durand H (2010) Probiotics in animal nutrition and health. Benefic Microbes 1: 3–9. doi: 10.3920/BM2008.1002
[51]	Zheng L, Crippen TL, Holmes L, et al. (2013) Bacteria mediate oviposition by the black soldier fly, Hermetia illucens (L.), (Diptera: Stratiomyidae). Sci Rep 3: 2563.
[52]	Chandler JA, Lang JM, Bhatnagar S, et al. (2011) Bacterial communities of diverse drosophila species: Ecological context of a host–microbe model system. PLoS Genet 7: e1002272. doi: 10.1371/journal.pgen.1002272
[53]	Klammsteiner T, Walter A, Heussler C, et al. (2018) Hermetia illucens (Diptera: Stratiomyidae) larvae in waste valorization and diet-based shifts in their gut microbiome. Available from: http://uest.ntua.gr/naxos2018/proceedings/pdf/86_NAXOS2018_Klammsteiner_etal.pdf.
[54]	Vogel H, Muller A, Heckel DG, et al. (2018) Nutritional immunology: Diversification and diet-dependent expression of antimicrobial peptides in the black soldier fly Hermetia illucens. Dev Comp Immunol 78: 141–148. doi: 10.1016/j.dci.2017.09.008
[55]	Erickson MC, Islam M, Sheppard C, et al. (2004) Reduction of Escherichia coli O157:H7 and Salmonella enterica serovar Enteritidis in chicken manure by larvae of the black soldier fly. J Food Prot 67: 685–690. doi: 10.4315/0362-028X-67.4.685
[56]	Liu Q, Tomberlin JK, Brady JA, et al. (2008) Black soldier fly (Diptera: Stratiomyidae) larvae reduce Escherichia coli in dairy manure. Environ Entomol 37: 1525–1530. doi: 10.1603/0046-225X-37.6.1525

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