TY - JOUR
T1 - Nutritional composition of black soldier fly (Hermetia illucens) prepupae reared on different organic waste substrates
AU - Spranghers, Thomas
AU - Ottoboni, Matteo
AU - Klootwijk, Cindy
AU - Ovyn, Anneke
AU - Deboosere, Stefaan
AU - De Meulenaer, Bruno
AU - Michiels, Joris
AU - Eeckhout, Mia
AU - De Clercq, Patrick
AU - De Smet, Stefaan
PY - 2017
Y1 - 2017
N2 - BACKGROUND: Black soldier fly larvae are converters of organic waste into edible biomass, of which the composition may depend on the substrate. In this study, larvae were grown on four substrates: chicken feed, vegetable waste, biogas digestate, and restaurant waste. Samples of prepupae and substrates were freeze-dried and proximate, amino acid, fatty acid and mineral analyses were performed. RESULTS: Protein content of prepupae varied between 399 and 431 g kg−1 dry matter (DM) among treatments. Differences in amino acid profile of prepupae were small. On the other hand, the ether extract (EE) and ash contents differed substantially. Prepupae reared on digestate were low in EE and high in ash (218 and 197 g kg−1 DM, respectively) compared to those reared on vegetable waste (371 and 96 g kg−1 DM, respectively), chicken feed (336 and 100 g kg−1 DM, respectively) and restaurant waste (386 and 27 g kg−1 DM, respectively). Prepupal fatty acid profiles were characterised by high levels of C12:0 in all treatments. CONCLUSION: Since protein content and quality were high and comparable for prepupae reared on different substrates, black soldier fly could be an interesting protein source for animal feeds. However, differences in EE and ash content as a function of substrate should be considered.
AB - BACKGROUND: Black soldier fly larvae are converters of organic waste into edible biomass, of which the composition may depend on the substrate. In this study, larvae were grown on four substrates: chicken feed, vegetable waste, biogas digestate, and restaurant waste. Samples of prepupae and substrates were freeze-dried and proximate, amino acid, fatty acid and mineral analyses were performed. RESULTS: Protein content of prepupae varied between 399 and 431 g kg−1 dry matter (DM) among treatments. Differences in amino acid profile of prepupae were small. On the other hand, the ether extract (EE) and ash contents differed substantially. Prepupae reared on digestate were low in EE and high in ash (218 and 197 g kg−1 DM, respectively) compared to those reared on vegetable waste (371 and 96 g kg−1 DM, respectively), chicken feed (336 and 100 g kg−1 DM, respectively) and restaurant waste (386 and 27 g kg−1 DM, respectively). Prepupal fatty acid profiles were characterised by high levels of C12:0 in all treatments. CONCLUSION: Since protein content and quality were high and comparable for prepupae reared on different substrates, black soldier fly could be an interesting protein source for animal feeds. However, differences in EE and ash content as a function of substrate should be considered.
KW - black soldier fly
KW - fatty acid, amino acid
KW - feed
KW - protein
KW - vegetable waste processing
U2 - 10.1002/jsfa.8081
DO - 10.1002/jsfa.8081
M3 - Article
AN - SCOPUS:85006042835
SN - 0022-5142
VL - 97
SP - 2594
EP - 2600
JO - Journal of the Science of Food and Agriculture
JF - Journal of the Science of Food and Agriculture
IS - 8
ER -