| Issue |
BIO Web Conf.
Volume 45, 2022
68th Scientific Conference with International Participation “FOOD SCIENCE, ENGINEERING AND TECHNOLOGY – 2021”
|
|
|---|---|---|
| Article Number | 01011 | |
| Number of page(s) | 4 | |
| Section | Food Science and Technology | |
| DOI | https://doi.org/10.1051/bioconf/20224501011 | |
| Published online | 04 February 2022 | |
Quality of eggs after feed supplements with silkworm pupae (Bombyx mori) and black fly larvae (Hermetia illucens)
1 Agricultural Institute, Agricultural Academy, Stara Zagora, Bulgaria
2 Department of Meat and Fish Technology, Technological Faculty, University of Food Technologies, Plovdiv, Bulgaria
* Corresponding author: nik0zzz11@gmail.com
The quality of hen eggs after partial replacement (7%) of soybean meal with silkworm pupae flour (Bombyx mori) and black soldier fly larvae flour (Hermetia illucens) was studied. Three groups of eggs were examined -C (control, standard feed), K (7% pupae), L (7% larvae flour). Both replacements in feed didn’t have a significant effect on the pH of egg white and yolk (p > 0.05). Lightness (L*) of the egg white KW decreased, and it’s a* values increased (p < 0.05). In egg white LW, was found an opposite effect. A decrease in the yellowness (b*) was found in egg white KW (p < 0.05). The use of fortified feed with black soldier fly larvae significantly reduces the redness (a*) and yellowness (b*) of the colour in the yolk LY. After the addition of larvae to the feed, the b* value increased by about 10% (p < 0.05). The share of oleic (C18:1) and linoleic acid (C18:2) in the yolk (KY) increases, while the yolks of group L had the highest content of linolenic acid (C18:3). The partial replacement of soybean meal with both black soldier fly larvae and silkworm pupae increases the proportion of unsaturated fatty acids in the examined eggs.
© The Authors, published by EDP Sciences, 2022
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