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10 results on '"Van Schelt, Jeroen"'

3. Data and R code: Bioconversion efficiencies, greenhouse gas and ammonia emissions during black soldier fly rearing – a mass balance approach

Author

Parodi, Alejandro, de Boer, Imke, Gerrits, Walter, van Loon, Joop, Heetkamp, Marcel, van Schelt, Jeroen, Bolhuis, Liesbeth, van Zanten, Hannah, Parodi, Alejandro, de Boer, Imke, Gerrits, Walter, van Loon, Joop, Heetkamp, Marcel, van Schelt, Jeroen, Bolhuis, Liesbeth, and van Zanten, Hannah

Abstract

Contains data and R code for analysis and visualizations of the study Bioconversion efficiencies, greenhouse gas and ammonia emissions during black soldier fly rearing.

Published
2020

4. Supplementary Information and R code from: Black soldier fly larvae show a stronger preference for manure than for a mass-rearing diet

Author

Parodi, Alejandro, van Dijk, Kim, van Loon, Joop, de Boer, Imke, van Schelt, Jeroen, van Zanten, Hannah, Parodi, Alejandro, van Dijk, Kim, van Loon, Joop, de Boer, Imke, van Schelt, Jeroen, and van Zanten, Hannah

Abstract

Black soldier fly larvae (BSFL) was reared on two different feeds: a mass rearing diet made of food by-products and pig manure. Preference tests were performed to determine if at different larval ages, BSFL showed a preference for any of the two diets.

Published
2020

5. Black soldier fly larvae show a stronger preference for manure than for a mass‐rearing diet

Author

Parodi, Alejandro, van Dijk, Kim, van Loon, Joop J.A., de Boer, Imke J.M., van Schelt, Jeroen, van Zanten, Hannah H.E., Parodi, Alejandro, van Dijk, Kim, van Loon, Joop J.A., de Boer, Imke J.M., van Schelt, Jeroen, and van Zanten, Hannah H.E.

Abstract

The attention for black soldier fly larvae (BSFL) as an alternative ingredient for food and feed products is on the rise. While many studies have reported the efficiency of BSFL to bio‐convert a wide range of organic waste streams into larval biomass, so far, it is unknown whether BSFL prefer certain waste streams over others when they have the possibility to choose. Here, we performed a choice‐test experiment to explore the preference of BSFL when exposed to pig manure and a mass‐rearing diet consisting of plant by‐products currently used for industrial BSFL production. We found that after 1 hr of exposure to both feeds, BSFL strongly preferred pig manure over the mass‐rearing diet. The preference for manure became stronger as larval age increased. Our results provide the first evidence that BSFL express a distinct diet preference. Understanding the reasons for the strong preference for manure is relevant for a diverse array of practical applications and to inform the discussion on insect welfare.

Published
2020

9. Tolerance and Excretion of the Mycotoxins Aflatoxin B1, Zearalenone, Deoxynivalenol, and Ochratoxin A by Alphitobius diaperinus and Hermetia illucens from Contaminated Substrates.

Author

Camenzuli, Louise, Van Dam, Ruud, de Rijk, Theo, Andriessen, Rob, Van Schelt, Jeroen, and Van der Fels-Klerx, H. J. (Ine)

Subjects
MYCOTOXINS, BIOCHEMICAL substrates, OCHRATOXINS, MASS budget (Geophysics), METABOLITES
Abstract

This study aimed to investigate the potential accumulation of mycotoxins in the lesser mealworm (Alphitobius diaperinus, LMW) and black soldier fly (Hermetia illucens, BSF) larvae. Feed was spiked with aflatoxin B1, deoxynivalenol (DON), ochratoxin A or zearalenone, and as a mixture of mycotoxins, to concentrations of 1, 10, and 25 times the maximum limits set by the European Commission for complete feed. This maximum limit is 0.02 mg/kg for aflatoxin B1, 5 mg/kg for DON, 0.5 mg/kg for zearalenone and 0.1 mg/kg for ochratoxin A. The mycotoxins and some of their metabolites were analysed in the larvae and residual material using a validated and accredited LC-MS/MS-based method. Metabolites considered were aflatoxicol, aflatoxin P1, aflatoxin Q1, and aflatoxin M1, 3-acetyl-DON, 15-acetyl-DON and DON-3-glycoside, and α- and β-zearalenol. No differences were observed between larvae reared on mycotoxins individually or as a mixture with regards to both larvae development and mycotoxin accumulation/excretion. None of the mycotoxins accumulated in the larvae and were only detected in BSF larvae several orders of magnitude lower than the concentration in feed. Mass balance calculations showed that BSF and LMW larvae metabolized the four mycotoxins to different extents. Metabolites accounted for minimal amounts of the mass balance, except for zearalenone metabolites in the BSF treatments, which accounted for an average maximum of 86% of the overall mass balance. Both insect species showed to excrete or metabolize the four mycotoxins present in their feed. Hence, safe limits for these mycotoxins in substrates to be used for these two insect species possibly could be higher than for production animals. However, additional analytical and toxicological research to fully understand the safe limits of mycotoxins in insect feed, and thus the safety of the insects, is required. [ABSTRACT FROM AUTHOR]

Published
2018
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