scholarly journals Study of fatty acid esters obtained from the biomass of Hermetia illucens larvae and the prospects of their use in the food industry

2021 ◽  
Vol 845 (1) ◽  
pp. 012090
Author(s):  
Smirnova K Yu ◽  
Yu S Karmeeva ◽  
A V Bannikova ◽  
P V Smutnev ◽  
S V Shpul ◽  
...  

Abstract In this study we carried out a physicochemical analysis of fatty acid esters (FFA) obtained from the biomass of larvae, which can be used as ingredients in the food industry and for the manufacture of feed. The acute toxicity of fatty acid esters obtained from the biomass of Hermetia illucens larvae was determined. It was revealed that the acid and peroxide values of the fat fraction obtained from the biomass of Hermetia illucens larvae are within the limits established by the norm, which indicates the high quality of this product. The fatty acid composition is represented mainly by lauric, palmitic, oleic and myristic acids. It was shown that the differences in fatty acid composition of the samples, obtained from the biomass of Hermetia illucens larvae manually and using the Soxhlet extraction apparatus, were insignificant and within the acceptable values. In the study of presence of toxic elements in fat fractions, lead, cadmium, arsenic, mercury, iron were not detected or they did not exceed the established values.

Biocatalysis ◽  
1990 ◽  
Vol 3 (4) ◽  
pp. 295-305 ◽  
Author(s):  
Akihiko Nagao ◽  
Makoto Kito

Author(s):  
R.M. Papaev ◽  
◽  
G.G. Shalamova ◽  
T.Yu. Motina ◽  
M.S. Talan ◽  
...  

The article presents the results of studies of the fatty acid composition of Zophobas morio mealworms and Hermetia illucens larvae. It was found that the insects contained saturated and mono- and polyunsaturated fatty acids. Comparative analysis of insects showed that the most at-tractive in terms of unsaturated acids was the composition of mealworms, where sapienic, linoleic, oleic and cervonic fatty acids prevailed. More than 70 % of the larvae contained saturated fatty ac-ids with a significant proportion of lauric and myristic acids. It was found that the use of mealworms Zophobas morio and larvae of Hermetia illucens in live and dried form in feeding young white rats provided an increase in live weight by 12.1-16.7 and 11.4-14.0 % in comparison with control animals.


Author(s):  
Bello, Adunola Abosede ◽  
Muniru, Oluwasegun Soliu ◽  
Igwe, Chima Cartney

Aim: To investigate the varietal difference in the composition of the oil of two Chryosophyllum albidium species. Study Design: Laboratory experimental design was used. Place and Duration of Study: Chryosophyllum acreanum and Chrysophyllum africana seed species of Chrysophyllum albidium were collected from Oja Oba market, Ibadan, Oyo State. The study was carried out between February 2019 - August 2019 at the Oilseed Laboratory of Federal Institute of Industrial Research, Oshodi, Lagos State, Nigeria. Methodology: Oil in both seeds was extracted using Soxhlet extraction method. The physical and chemical properties of the oils were determined using official methods of analysis while the fatty acid composition of the seed oils was analysed using Gas Chromatography- Mass Spectrophotometer. Results: The oil yield for both seeds was low, 3.52% for C. acreanum and 3.75% for C. africana. The values for the physical properties (Specific gravity, refractive index and unsaponifiable matter) of C. acreanum seed oil were higher than for C. africana seed oil. The chemical properties shows that the acid and peroxide values are 2.79mgKOH/g; 2.67mgKOH/g, 1.78mEq/kg; 1.63mEq/kg for C. acreanum and C. africana seed oil respectively while the iodine values for both seed oils are below 100mgI2/100g. The fatty acid composition shows that both seed oil contains myristic acid as their major fatty acid. Conclusion: The evaluated characteristics of the seed oils showed that there is no significant differences in the oil composition of C. albidium seed varieties as the oil composition are closely related except for the slight difference in their fatty acid profile.


2020 ◽  
Vol 50 (2) ◽  
pp. 222-231
Author(s):  
Anna Mukhortova ◽  
Olga Uzbekova ◽  
Ivan Lyzhov

Introduction. Deep-sea fauna of the North Atlantic has a great potential for the development of food industry. Rabbitfish (Chimaera monstrosa) is a hydrobionts that makes up a significant proportion of bycatch in the traditional trawl and longline fishery. The research objective was to determine the technochemical composition and biochemical properties of organs and tissues of rabbitfish. Study objects and methods. The size-mass and total chemical composition was performed by standard methods. The amino acid composition of proteins was determined by chromatographic separation of amino acid derivatives obtained by reaction with orthophthalic aldehyde and β-mercaptoethanol. The method of one-dimensional thin-layer chromatography made it possible to determine the fractional composition of lipids. The fatty acid composition was determined using an S-180 gas-liquid chromatograph (Yanaco, Japan). The fat-soluble vitamins were determined by the saponification of samples with alkali, extraction, and separation of the unsaponifiable part. The fractional composition of proteins became clear after a planar polyacrylamide gel electrophoresis on (MultiPhor II, Sweden). Results and discussion. The research featured the size-mass and chemical composition of body parts, the fractional and amino acid composition of proteins, as well as the fractional and fatty acid composition of lipids, vitamins, heavy metals, and organochlorine compounds in the tissues and organs of the rabbitfish. The sensory properties of the samples proved quite high. Hot smoked rabbitfish meat can be recommended for snack foods. Waste (heads, entrails, skin, cartilage, fins) makes up more than 50% of total body weight and can be used in feed production or as a protein-containing raw material for hydrolysates in microbiology, medicine, and food industry. Conclusion. The research involved a complex biochemical study of the rabbitfish organs and tissues. The performed technochemical studies made it possible to give preliminary recommendations on the directions of its most rational integrated use.


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