Facing the challenge of discarded fish: improving nutritional quality of two insect species larvae for use as feed and food

2020 ◽  
pp. 1-12
Author(s):  
D. Fabrikov ◽  
E. Morote ◽  
J. Montes ◽  
M.J. Sánchez-Muros ◽  
F.G. Barroso ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Insect Larvae ◽  
Insect Rearing ◽  
Pagellus Bogaraveo ◽  
Fishery Discards ◽  
Long Chain ◽  
Broiler Feed

Fishery discards represent 10% of total fishery catches, and insect rearing can be accomplished using this wasted resource. Considering that fish are the main source of n-3 very long-chain polyunsaturated fatty acids for human nutrition, and that fish contain both eicosapentaenoic acid and docosahexaenoic acid, this study focused on monitoring the accumulation of such n-3 very long-chain polyunsaturated fatty acids in insect larvae. To determine the feasibility of this process, we monitored nutritional changes achieved in two insect larvae – black soldier fly (Hermetia illucens Linnaeus, 1758) and mealworm (Tenebrio molitor Linnaeus, 1758) – fed using two different fish species from discards, i.e. round sardinella (Sardinella aurita Valenciennes, 1847) and blackspot seabream (Pagellus bogaraveo, Brünnich, 1768). Five different diets were prepared: control (broiler feed), 50% discarded fish (round sardinella and blackspot seabream) +50% broiler feed, and 100% discarded fish. The 100% blackspot seabream fed H. illucens accumulated eicosapentaenoic acid and docosahexaenoic acid up to 2.4 g /100 g and 0.8 g /100 g, respectively. T. molitor accumulated lower amounts of both n-3 very long-chain polyunsaturated fatty acids due to the low intake of fish-containing feed by the larvae.

scholarly journals Microalgae n-3 PUFAs Production and Use in Food and Feed Industries

Marine Drugs ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 113
Author(s):  
Marine Remize ◽  
Yves Brunel ◽  
Joana L. Silva ◽  
Jean-Yves Berthon ◽  
Edith Filaire
Keyword(s):  
Fatty Acids ◽  
Global Warming ◽  
Docosahexaenoic Acid ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Human Health ◽  
Current Knowledge ◽  
Epa And Dha ◽  
Anti Cancer ◽  
Food And Feed

N-3 polyunsaturated fatty acids (n-3 PUFAs), and especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are essential compounds for human health. They have been proven to act positively on a panel of diseases and have interesting anti-oxidative, anti-inflammatory or anti-cancer properties. For these reasons, they are receiving more and more attention in recent years, especially future food or feed development. EPA and DHA come mainly from marine sources like fish or seaweed. Unfortunately, due to global warming, these compounds are becoming scarce for humans because of overfishing and stock reduction. Although increasing in recent years, aquaculture appears insufficient to meet the increasing requirements of these healthy molecules for humans. One alternative resides in the cultivation of microalgae, the initial producers of EPA and DHA. They are also rich in biochemicals with interesting properties. After defining macro and microalgae, this review synthesizes the current knowledge on n-3 PUFAs regarding health benefits and the challenges surrounding their supply within the environmental context. Microalgae n-3 PUFA production is examined and its synthesis pathways are discussed. Finally, the use of EPA and DHA in food and feed is investigated. This work aims to define better the issues surrounding n-3 PUFA production and supply and the potential of microalgae as a sustainable source of compounds to enhance the food and feed of the future.

Lipase-catalyzed esterification of glycerol with n-3 polyunsaturated fatty acids from winterized fish oil Esterificación catalítica de glicerol con ácidos grasos 3-n poliinsaturados de aceite de pescado

1998 ◽  
Vol 4 (6) ◽  
pp. 401-405 ◽  
Author(s):  
V.J. Robles ◽  
H.S. García ◽  
J.A. Monroy ◽  
O. Angulo
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Phosphate Buffer ◽  
Esterification Reaction ◽  
Pseudomonas Sp ◽  
Menhaden Oil ◽  
Glyceride Synthesis ◽  
Esterified Fatty Acids

Menhaden oil was hydrolyzed using a lipase from Pseudomonas sp. The hydrolysate was cold frac tionated at-72°C. Glyceride synthesis was performed using the same lipase under different reaction environments. The best conditions for the esterification reaction were 39 °C for 18 h in a reaction mixture containing anhydrous glycerol, n-3 polyunsaturated fatty acids (PUFA) enriched solution (2% lipids in hexane), hexane, and phosphate buffer-lipase solution (1% w/v). Product composition was 81.33% triacylglycerides and 18.67% of free fatty acids (w/w). Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) accounted for 36.18% of the esterified fatty acids, of which 58% was EPA and 42% was DHA. This method offers an alternative to produce glycerides rich in n-3 PUFA.

scholarly journals Rapeseeds a Rich Source of Polyunsaturated Fatty Acids

Proceedings ◽  
2019 ◽  
Vol 29 (1) ◽  
pp. 115
Author(s):  
Cristina Emanuela Enăşcuţă ◽  
Elena Emilia Oprescu ◽  
Adrian Radu ◽  
Elena Radu ◽  
Marian Deaconu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Stroke Prevention ◽  
Essential Role ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Human Diet ◽  
Brain Functions

In human diet, polyunsaturated fatty acids (PUFA), have an essential role in optimal brain functions and stroke prevention, specially, omega-3 fatty acids, e.g., 9,12,15-linolenic acid (ALA, 18:3), 5,8,11,14,17-eicosapentaenoic acid (EPA, 20:5), and 4,7,10,13,16,19-docosahexaenoic acid (DHA, 22:6). [...]

Hydrolysis of long-chain, n-3 fatty acid enriched chylomicrons by cardiac lipoprotein lipase

1999 ◽  
Vol 77 (10) ◽  
pp. 813-818 ◽  
Author(s):  
Ryna Levy ◽  
Gene R Herzberg
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Docosahexaenoic Acid ◽  
Stearic Acid ◽  
Eicosapentaenoic Acid ◽  
Free Fatty Acids ◽  
Lipoprotein Lipase ◽  
Alpha Linolenic Acid ◽  
Hydrolysis Of ◽  
Long Chain

The hydrolysis of chylomicrons enriched in long-chain n-3 fatty acids by cardiac lipoprotein lipase was studied. In 60 min, 24.8% of the triacylglycerol fatty acids were released as free fatty acids. The fatty acids were hydrolyzed at different rates. DHA (docosahexaenoic acid, 22:6n-3) and EPA (eicosapentaenoic acid, 20:5n-3) were released at rates significantly less than average. Stearic acid (18:0), 20:1n-9, and alpha-linolenic acid (18:3n-3) were released significantly faster than average. There was no relationship between the rate of release of a fatty acid and the number of carbons or the number of double bonds. Lipoprotein lipase selectively hydrolyzes the fatty acids of chylomicron triacylglycerols. This selectively will result in remnants that are relatively depleted in 18:0, 20:1, and 18:3 and relatively enriched in 20:5 and 22:6.Key words: lipoprotein lipase, chylomicrons, fish oil, eicosapentaenoic acid, docosahexaenoic acid.

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