THE EFFECT OF ZOOCOMPOST FORMED AS A RESULT OF THE DEVELOPMENT OF LARVAE OF THE BLACK SOLDIER FLY HERMETIA ILLUCENS IN ORGANIC SUBSTRATES ON NEMATODES OF VARIOUS TAXONOMIC AFFILIATIONS

Bioconversion of organic material with the help of Hermetia illucens larvae allows to partially solve the problem of waste disposal and to obtain a wide range of various products, including zoocompost. In laboratory conditions, a mixture of lawn grasses was grown in the soil from a natural biocenosis with a predominance of saprobiotic (Rhabditida), polyphage species of nematodes (Dorylaimida) and phytohelminths (Tylenchida) and with the introduction of zoocompost in the soil in a ratio of 1/43. After 30 days, the number of nematodes in the control variants increased almost 6 times, the number of phytohelminths practically remained at the same level, the increase was due to saprobiotic nematodes. The ratio of phytohelminths to saprobiotic nematodes was 1:18. When zoological compost was introduced, a significant increase in saprobionts and a decrease in nematodes of the tylenchid order (~ 1:1380) were observed. The number of polyphagous species at the end of the experiment doubled in the control, while in the experiment it changed slightly. It was shown that in addition to the growth-promoting effect on plants, the introduction of an organic substrate leads to an increase in the number of saprozoid nematodes, with the displacement of phytohelminths.

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USING FOOD WASTE FOR THE GROWING OF HERMETIA ILLUCENS FLY LARVAE (BRIEF REVIEW OF FOREIGN LITERATURE)

Construction economic and environmental management ◽

10.37279/2519-4453-2020-4-17-30 ◽

2021 ◽

Vol 77 (4) ◽

pp. 17-30

Author(s):

I.G. Shaikhiev ◽

S.V. Sverguzova ◽

Zh.A. Sapronova ◽

E.S. Antyufeeva

Keyword(s):

Food Waste ◽

Unsaturated Fatty Acids ◽

Organic Food ◽

Organic Substrate ◽

Organic Substrates ◽

Processing Efficiency ◽

Hermetia Illucens ◽

Foreign Literature ◽

Solid Municipal Waste ◽

Hermetia Illucens Larvae

The information from foreign literature on the use of organic consumption food waste, substandard food products generated at trade objects, as well as their mixtures in the composition of solid municipal waste as substrates for growing larvae and prepupae of the fly Hermetia illucens is briefly summarized. Also shown the possibility of using specific waste as a substrate, such as, in particular, waste from the processing of seafood and mushrooms. It was shown that the larvae and prepupae of Hermetia illucens contribute to the high conversion of the organic substrate into the larvae biomass and waste processing efficiency with a decrease in its mass and volume. Larvae of Hermetia illucens, grown on organic substrates, are characterized in most cases by a high content of saturated and unsaturated fatty acids and proteins. The compost formed after the bioconversion of organic substrates using Hermetia illucens larvae contains a high amount of nutrients and can be used as fertilizer or soil for growing indoor plants and crops. It was revealed that the processing of organic food waste contributes to a significant reduction in greenhouse gas emissions compared to simple composting or anaerobic digestion.

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Valorisation of Organic Waste By-Products Using Black Soldier Fly (Hermetia illucens) as a Bio-Convertor

Sustainability ◽

10.3390/su13158345 ◽

2021 ◽

Vol 13 (15) ◽

pp. 8345

Author(s):

Kieran Magee ◽

Joe Halstead ◽

Richard Small ◽

Iain Young

Keyword(s):

Food Waste ◽

Fish Feed ◽

Black Soldier Fly ◽

Hermetia Illucens ◽

High Quality Protein ◽

The Face ◽

Beet Pulp ◽

By Products ◽

Hermetia Illucens Larvae

One third of food produced globally is wasted. Disposal of this waste is costly and is an example of poor resource management in the face of elevated environmental concerns and increasing food demand. Providing this waste as feedstock for black soldier fly (Hermetia illucens) larvae (BSFL) has the potential for bio-conversion and valorisation by production of useful feed materials and fertilisers. We raised BSFL under optimal conditions (28 °C and 70% relative humidity) on seven UK pre-consumer food waste-stream materials: fish trimmings, sugar-beet pulp, bakery waste, fruit and vegetable waste, cheese waste, fish feed waste and brewer’s grains and yeast. The nutritional quality of the resulting BSFL meals and frass fertiliser were then analysed. In all cases, the volume of waste was reduced (37–79%) and meals containing high quality protein and lipid sources (44.1 ± 4.57% and 35.4 ± 4.12%, respectively) and frass with an NPK of 4.9-2.6-1.7 were produced. This shows the potential value of BSFL as a bio-convertor for the effective management of food waste.

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Conversion of Spent Coffee and Donuts by Black Soldier Fly (Hermetia illucens) Larvae into Potential Resources for Animal and Plant Farming

Insects ◽

10.3390/insects12040332 ◽

2021 ◽

Vol 12 (4) ◽

pp. 332

Author(s):

Hayden Fischer ◽

Nicholas Romano ◽

Amit Kumar Sinha

Keyword(s):

Organic Waste ◽

Glycogen Content ◽

Organic Fertilizer ◽

Organic Fertilizers ◽

Black Soldier Fly ◽

Hermetia Illucens ◽

Hermetia Illucens Larvae ◽

Nitrogen Phosphorus ◽

Dough Stage ◽

Plant Farming

Nutritionally unbalanced organic waste can be converted into potential resources for animal and plant farming by culturing black soldier fly (Hermetia illucens) larvae (BSFL) and prepupae (BSFP). BSFL and BSFP are rich sources of protein and lipids, while the leftover excrement called “frass” can be used as an organic fertilizer. Using readily available resources, BSFL were cultured on spent coffee, donut dough or an equal blend for 35 days. Survival, productivity, daily pupation and biochemical composition of BSFL and BSFP were measured along with the nitrogen-phosphorus-potassium values of the frass. Survival was highest in the blend compared (81%) to spent coffee (45%) or dough (24%); however, BSFL and BSFP were significantly longer and heavier from dough. Stage and food significantly influenced the protein, lipid and glycogen content of the BSFL and BSFP, which tended to be higher in the latter. While fatty acids were often significantly higher in BSFL fed spent coffee, the amino acid composition of BSFL was generally higher in dough. Frass from the blend had significantly highest nitrogen content, while potassium and phosphorus were significantly higher and lower from spent coffee, respectively. Although coffee and donut dough were suboptimal substrates for BSFL, a blend of these produced BSFL and frass that were nutritionally comparable to soybean meal and many organic fertilizers, respectively.

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