Cited by 93Insect Utilization and EffectsFood Safety and HygieneFood Allergy and Anaphylaxis Research

Food Safety of Consuming Black Soldier Fly (Hermetia illucens) Larvae: Microbial, Heavy Metal and Cross-Reactive Allergen Risks

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Bessa, Leah W., Pieterse, Elsje, Marais, Jeannine, Dhanani, Karim, Hoffman, Louwrens C.·2021·Foods

Abstract

Black soldier fly (Hermetia illucens) larvae (BSFL) are a promising, sustainable source of nutrients, however, there is limited knowledge regarding the food safety of consuming BSFL. This study determined the safety of consuming BSFL for direct human consumption in terms of microbial, heavy metal and allergen content. Microbial counts were determined using ISO (International Organization for Standardization) methods, heavy metals were determined using inductively coupled plasma mass spectrometry and allergens were determined via Orbitrap mass spectrometry and ELISA (enzyme-linked immunosorbent assay) kits. Feed and killing method influenced the presence of Bacillus cereus (p = 0.011), and only the killing method influenced Escherichia coli (p < 0.00) and total viable count (TVC) (p < 0.00). Blanching resulted in a 3-log reduction in E. coli and a 3.4 log reduction in the TVC counts. Salmonella spp. and Listeria spp. were not detected in the BSFL samples. Heavy metals were detected although they were below maximum legal limits. Cross-reactive allergens, tropomyosin and arginine kinase, were detected in the BSFL samples, although the clinical significance requires research. The feed fed to the BSFL and blanching were found to influence the safety of consuming BSFL, highlighting the importance of incorporating sufficient decontamination steps, such as blanching, to ensure food safety.

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Crossref · 10.3390/foods10081934

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  • BSFL are relevant for human consumption.

    “Thus, many studies investigated BSFL nutrition, which is an early purpose for animal feedstock, and also found that BSFL are relevant for human consumption [81].”
  • The feed fed to the BSFL and blanching were discovered to influence the safety of ingesting BSFL, emphasizing the significance of adding adequate decontamination measures, such as blanching, to assure food safety.

    “Some studies show the feed fed to the BSFL and blanching were discovered to influence the safety of ingesting BSFL, emphasizing the significance of adding adequate decontamination measures, such as blanching, to assure food safety [81].”

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1 of the 59 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. [28]Bernton H. Brown H. Insects as potential sources of ingestant allergens Annals Allergy 1967 25 381 387
  2. [41]SANS Method 4833. Second Edition. Microbiology: General Guidelines for the Enumeration of Microorganisms-Colony Count Technique at 30 °C Standards South Africa Printers Pretoria, South Africa 2012
  3. [46]Jay J.M. Loessner M.J. Golden D.A. Indicators of food microbial quality and safety Modern Food Microbiol. 2005 473 495 10.1007/0-387-23413-6_20 · DOI

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Authors
Bessa, L. W., Pieterse, E., Marais, J., Dhanani, K., & Hoffman, L. C.
Affiliations
  • Stellenbosch University (ZA)
  • The Woodmill Office 11, 1st Floor, Vredenburg Road, Stellenbosch 7602, South Africa
  • The University of Queensland (AU)
Corresponding author
Hoffman, Louwrens C.
Venue
Foods
Publisher
MDPI AG
Published
2021-08-20
Volume
10
Issue
8
Pages
1934
ISSN
2304-8158 (ISSN-L)
OpenAlex
W3194491351
Cited by
88
References
59
Citations by year
2026: 17 · 2025: 21 · 2024: 22 · 2023: 17 · 2022: 11
FWCI
8.60
Type
journal article
Language
en
Open access
Locations
  • Foods (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
South African Research Chairs Initiative (84633)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect Utilization and Effects
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Food Safety and Hygiene
  • Health Sciences › Medicine › Immunology and Allergy › Food Allergy and Anaphylaxis Research
Keywords
black soldier fly larvae, Hermetia illucens, edible insects, food safety, microbial contamination, heavy metals, cross-reactive allergens, tropomyosin, arginine kinase, Escherichia coli, Bacillus cereus, blanching, insect feed, decontamination

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