MUDr. Dana Maňasková


Vyhledávání na medicinman.cz
 

potraviny/hmyz/lipidy

Lipids

  • After protein, the second largest fraction of the insect
  • 10 to 15% of the insect in dry matter
  • One of the major co-products of insect industry
  • Species, stage of growth, extraction technologies can impact the fat quality
  • Replace vegetal or fish oil in poultry or aqua feed
  • Health or human food applications are also envisaged to replace vegetal oil or butter in processed foods
  • Submitted to the regulation and especially to the Novel Food EU regulation
  • Some energy or surfactant applications can also be considered
  • In dry weight 10 to 15%
    • Chorthippus parallelus, Conocephalus discolor, Acheta Domesticus
  • More than 30%
    • Tenebrio molitor larvae (Aman et al., 2017)
  • Tenebrio molitor contained the highest amount of lipids
  • Among the four following insect species
    • A. diaperinus, A. domesticus and B. dubia.

Chorthippus Parallelus

  • Alpha-linolenic acid (C18:omega3, 39%) formed the major lipid component,
  • Followed by oleic acid and linoleic acid.

Insect feeding

  • Can also change the nutritive values (Oonincx and Finke, 2021)
  • Addition of flaxseed in Galleria mellonella feed increased the
    • Omega3 fatty acid content from 2 to 14.8%
    • omega6 fatty acid value from 9.9 to 12.6%
  • Larvae fed with flaxseed
    • Showed a omega6/omega3 ratio optimal for human health
    • Total PUFA incremented from 9.5 to 25.5% (Francardi et al., 2017)
  • Tenebrio molitor and Hermetia illucens larvae (Lawal et al. 2021) obdobně
  • Supplementing a basal diet with specific seed meals
    • Increase omega-3 fatty acid
    • Obtain a omega-6/omega-3 ratio closer to that recommended for healthy diet.

Solid at room temperature

  • lipids extracted from black soldier fly larvae (Hermetia illucens)
  • Insect “fat”
  • High content in saturated fatty acids
    • From 57 to 75% of total fatty acids
  • More abundant saturated fatty acids in this fat are lauric acid (C12:0)
    • Representing around 45%,
  • Myristic acid (C14:0) around 9%
  • Palmitic acid C16:0 (? 12 of total fatty acids) (Tzompa-Sosa and Fogliano, 2017).

The quality of insect fat

  • Processing method and extraction technology
  • Process should be carefully selected according to desired application and the costs (Tzompa-Sosa and Fogliano, 2017)

Soxhlet extraction

  • Aqueous method
  • Supercritical CO2 extractions
  • Not a major impact in the fatty acid composition
  • But strongly influence the lipid extraction yield and the types of extracted lipids

Aqueous extraction



O úroveň výše

Poslední aktualizace: 26. 9. 2023 0:07:13