scholarly journals Towards Functional Insect Feeds: Agri-Food By-Products Enriched with Post-Distillation Residues of Medicinal Aromatic Plants in Tenebrio molitor (Coleoptera: Tenebrionidae) Breeding

Antioxidants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 68
Author(s):  
Stefanos S. Andreadis ◽  
Nikolas Panteli ◽  
Maria Mastoraki ◽  
Eleftheria Rizou ◽  
Vassilia Stefanou ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Nutritional Value ◽  
Tenebrio Molitor ◽  
Total Phenolic ◽  
Human Consumption ◽  
Larval Weight ◽  
Alternative Substrates ◽  
Distillation Residues ◽  
Promising Source ◽  
By Products

Sustainability, circular economy and alternative production systems are urgent imperatives for humanity and animal husbandry. Unless wasted, agri-food by-products can offer a promising source of high value. We evaluated the effect of rice bran (RB), corncob (CC), potato peels (PP), solid biogas residues (BR), and olive-oil processing residuals (OR), as alternative substrates to wheat bran (WB as control), on the growth and nutritional value of Tenebrio molitor during its breeding for animal feeds and/or human consumption. Innovation-wise, we further investigated the substrate supplementation (0, 10, 20%) with post-distillation residues of Mediterranean aromatic-medicinal plants (MAPs: lavender, Greek oregano, rosemary, olive; 1:1:1:1 ratio). Tenebrio molitor larvae (TML) were reared in all the studied substrates, and TML and diets’ proximate and fatty acid compositions as well as total phenol and flavonoid content and antioxidant potential were assessed using standard procedures. After statistical analysis of correlations, we observed that CC promoted oviposition and progeny survival; larval weight and dry matter were positively affected mainly by dietary energy and fat content; number of TML and/or larval weight increased using 10% MAPs inclusion in WB, RB and OR or RB, OR, BR and PP, respectively, which did not affect protein content; TML fatty acid composition decreased the content of saturated ones and increased that of mono-unsaturated ones; MAPs residues had an apparent favorable impact on total phenolic content and antioxidant activity of each substrate, with RB displaying the highest capacity and content. These findings indicate that alternative substrates can be exploited and their enrichment with natural phenolics is able to influence T. molitor growth, offering highly beneficial and nutritional value.

scholarly journals Composition and Nutritional Value of Acid Oils and Fatty Acid Distillates Used in Animal Feeding

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 196
Author(s):  
Elisa Varona ◽  
Alba Tres ◽  
Magdalena Rafecas ◽  
Stefania Vichi ◽  
Ana C. Barroeta ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Nutritional Value ◽  
Oil Refining ◽  
Analytical Control ◽  
Dietary Energy ◽  
Feed Ingredients ◽  
Animal Feeding ◽  
By Products

Acid oils (AO) and fatty acid distillates (FAD) are oil refining by-products rich in free fatty acids. The objective of this study is their characterization and the identification of their sources of variability so that they can be standardized to improve their use as feed ingredients. Samples (n=92) were collected from the Spanish market and the MIU value (sum of moisture, insoluble impurities, and unsaponifiable matter), lipid classes, fatty acid composition, and tocol content were analyzed. Their composition was highly variable even between batches from the same producer. As FAD originated from a distillation step, they showed higher free fatty acid amounts (82.5 vs 57.0 g/100 g, median values), whereas AO maintained higher proportions of moisture, polymers, tri-, di-, and monoacylglycerols. Overall, the MIU value was higher in AO (2.60–18.50 g/100 g in AO vs 0.63-10.44 g/100 g in FAD), with most of the contents of insoluble impurities being higher than those in the guidelines. Tocol and fatty acid composition were influenced by the crude oil’s botanical origin. The calculated dietary energy values were, in general, higher for AO and decreased when a MIU correction factor was applied. The analytical control and standardization of these by-products is of the outmost importance to revalorize them as feed ingredients.

scholarly journals Fatty acid, mineral content and antioxidant activities of Algerian fat bee pollen

2020 ◽  
Vol 19 (2) ◽  
pp. 208-215
Author(s):  
Bakchiche Boulanouar ◽  
Hadjira Guenane ◽  
Bihter Sahin ◽  
Mehmet Öztürk ◽  
Mosad Ghareeb ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fatty Acid ◽  
Specific Gravity ◽  
Antioxidant Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Total Phenolic ◽  
Dpph Assay ◽  
Bee Pollen ◽  
Iodine Values ◽  
Promising Source

Bee pollen is known for its nutritional value, and therefore it is used in the treatment of some health disorders as food supplements. Herein, the chemical fatty acid profile and mineral contents of two Algerian bee pollen collected from different regions were investigated, along with their physicochemical properties such as specific gravity, refractive index, and acid, saponification, and iodine values. In addition, their total phenolic contents (TPC) were also investigated. Gas chromatography/mass spectrometry (GC/MS) analysis revealed that the bee pollens mainly contained palmitic (17.0 and 26.5 %), oleic (8.5 and 10.1 %), linoleic (15.7 and 12.6 %) and linolenic acids (27.2 and 26.3 %), respectively. The saponification values were 178.54 and 175.73 mg KOH.g-1, while the specific gravity 0.915 and 0.924, the refractive index 1.465 and 1.464, and acid values 22.04, and 10.01 mg KOH.g-1 oil. The iodine values were, however, 44.42 and 32.90 mg I2.g-1 fat, respectively. Potassium and sodium were the main detected elements in both pollen samples with variable percentages. In the DPPH assay, the IC50 was 4.88 and 1.73 mg.mL-1 for samples 1 and 2, respectively, ABTS and phosphomolybdenum assays supported DPPH assay results. It was concluded that the fat part of bee pollen by honeybees (Apis mellifera L.) is a promising source of naturally occurring antioxidants and nutrients.

scholarly journals Farmed Gilthead Sea Bream (Sparus aurata) by-Products Valorization: Viscera Oil ω-3 Enrichment by Short-Path Distillation and In Vitro Bioactivity Evaluation

Marine Drugs ◽  
2021 ◽  
Vol 19 (3) ◽  
pp. 160
Author(s):  
Concetta Maria Messina ◽  
Rosaria Arena ◽  
Simona Manuguerra ◽  
Giuseppe Renda ◽  
Vincenzo Alessandro Laudicella ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Short Path ◽  
Business Models ◽  
Ethyl Esters ◽  
Gilthead Sea Bream ◽  
Sea Bream ◽  
Human Consumption ◽  
Short Path Distillation ◽  
By Products

This study shows a pilot scale protocol aimed to obtain an omega 3-enriched oil after the processing of farmed gilthead sea bream viscera (SBV); this was oil was tested in vitro for bioactivity, attesting to the possibility to turn waste into profit The quality of the oil, in terms of requirements for animal and human consumption, was assessed by determining some chemical parameters, such as peroxide value (PV), thiobarbituric acid reactive substances (TBARS), ρ-anisidine (ρ-AV) content, total oxidation value (TOTOX), and phospholipids and free fatty acid (%), both in crude viscera oil (CVO) and refined viscera oil (RVO). Among the extraction conditions, the higher CVO yields were obtained at 60 °C for 10 min (57.89%) and at 80 °C for 10 min (67.5%), and the resulting oxidation levels were low when utilizing both extraction conditions. RVO, obtained from CVO extracted at 60 °C, showed the highest quality on the basis of the assessed parameters. The ethyl esters of the total fatty acid (TFA) contents extracted from RVO were enriched in the ω-3 polyunsaturated fatty acid fraction (PUFAE) up to almost 56% via short path distillation (SPD). Antioxidant activities and adipogenic properties were tested in vitro. PUFAE protected 3T3 L1 cells from oxidative stress and exerted an anti-adipogenic effect in Dicentrarchus labrax pre-adipocytes, attesting to the beneficial properties for both farmed fish and human health. These results could stimulate the adoption of solutions aimed to recover and utilize aquaculture by-products at a higher scale, turning “waste into profit” and indicating a strategy to reach more sustainable business models in aquaculture resource utilization according to the principles of the circular economy.

scholarly journals Valorization of Agri-Food Waste from Pistachio Hard Shells: Extraction of Polyphenols as Natural Antioxidants

Resources ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 45
Author(s):  
Nunzio Cardullo ◽  
Melania Leanza ◽  
Vera Muccilli ◽  
Corrado Tringali
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Extract ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Industrial Processing ◽  
Phenolic Constituents ◽  
Potential Applications ◽  
Hard Shell ◽  
Promising Source ◽  
By Products

The agricultural processing industry usually generates a remarkable amount of by-products rich in bioactive compounds, which can be exploited for agri-food or nutraceutical applications. Pistachio’s hard shell is one of the major by-products from pistachio industrial processing. The aim of this work was the evaluation of pistachio shells as a potential source of natural antioxidants. We evaluated different extraction procedures by measuring total phenolic content, total flavonoid content and antioxidative activity (DPPH•, TEAC and ORAC). The microwave-assisted ethanol extract turned out to be the most promising and was fractionated by XAD-16 column chromatography, affording six fractions analyzed through HPLC/ESI-MS/MS and 1H-NMR to identify the main antioxidative constituents. Fractions Fr4–Fr6 demonstrated the highest antioxidant activity. Gallic acid and a monogalloylglusose isomer are the main phenolic constituents of Fr4. Both simple and complex phenolics, such as flavonoids and hydrolysable tannins, were identified in fractions Fr5 and Fr6; pentagalloylglucose and kaempferol, well-known for their antioxidant activity, are the most abundant constituents. The results highlighted that the proposed methodology can be an effective way to recover bioactive phenolic compounds from pistachio hard shell, making this by-product a promising source of compounds with potential applications in food and healthcare sectors.

scholarly journals Evaluation of Long Sea Snail Hinia reticulata (Gastropod) from the Middle Adriatic Sea as a Possible Alternative for Human Consumption

Foods ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 905
Author(s):  
Alberto Felici ◽  
Nina Bilandžić ◽  
Gian Enrico Magi ◽  
Nicolaia Iaffaldano ◽  
Elisa Fiordelmondo ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Meat Quality ◽  
Fatty Acid Profile ◽  
Nutritional Value ◽  
Adriatic Sea ◽  
Calcium Content ◽  
Human Consumption ◽  
Quality Traits ◽  
The Common ◽  
Total Body

In mid Adriatic Sea the common sea snail is the habitual snail eaten, but over the years fishermen started to capture also the long sea snail, a possible alternative for human consumption. This study aims to compare the quality traits of the edible fraction in the common and long sea snails. In this study, common and long sea snail samples were provided by fishermen in November 2018 and March 2019. Total weight (meat and shell), fractions of meat and shell (after having extracted the edible part), fatty acid, elements in meat, and calcium content in shells were determined. Meat quality traits showed high nutritional value without significant differences between the two species. The fatty acid profile showed n3/n6 ratio significantly different both considering the season of sampling (November: 4.1; March: 2.38) and the species of sea snail (common: 4.98; long: 2.86). The long species showed a higher yield in the total body and calcium content concentrations. However, the long sea snail showed 50% lower meat yield compared with the common sea snail. In conclusion, the long sea snail can be used as an alternative to the common sea snail for human consumption.

Comparison of the nutritional value of mysore thorn borer (Anoplophora chinensis) and mealworm larva (Tenebrio molitor): Amino acid, fatty acid, and element profiles

2020 ◽  
Vol 323 ◽  
pp. 126818 ◽  
Author(s):  
Ricardo A. Wu ◽  
Qingzhi Ding ◽  
Litao Yin ◽  
Xiuwei Chi ◽  
Nianzhen Sun ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Nutritional Value ◽  
Tenebrio Molitor

scholarly journals Nutritional Composition of Apis mellifera Drones from Korea and Denmark as a Potential Sustainable Alternative Food Source: Comparison Between Developmental Stages

Foods ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 389 ◽  
Author(s):  
Sampat Ghosh ◽  
Ho-Yong Sohn ◽  
Su-Jin Pyo ◽  
Annette Bruun Jensen ◽  
Victor Benno Meyer-Rochow ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Apis Mellifera ◽  
Honey Bee ◽  
Nutritional Value ◽  
Developmental Stages ◽  
Saturated Fatty Acids ◽  
Antioxidant Properties ◽  
Human Consumption

We compared nutrient compositions of honey bee (Apis mellifera) drones of different developmental stages from two different populations—the Italian honey bee reared in Korea and Buckfast bees from Denmark. Analyses included amino acid, fatty acid, and mineral content as well as evaluations of antioxidant properties and haemolysis activities. The compositions of total amino acids, and thus protein content of the insects, increased with development. A similar trend was observed for minerals presumably due to the consumption of food in the adult stage. In contrast, total fatty acid amounts decreased with development. Altogether, seventeen amino acids, including all the essential ones, except tryptophan, were determined. Saturated fatty acids dominated over monounsaturated fatty acids in the pupae, but the reverse held true for the adults. Drones were found to be rich in minerals and the particularly high iron as well as K/Na ratio was indicative of the nutritional value of these insects. Among the three developmental stages, adult Buckfast drones exhibited the highest antioxidant activity. Bearing in mind the overall high nutritional value, i.e., high amino acids, minerals and less fatty acids, late pupae and adult drones can be useful for human consumption while the larvae or early pupal stage can be recommended as feed. However, owing to their relatively high haemolysis activity, we advocate processing prior to the consumption of these insects.

scholarly journals Pineapple (Ananas comosus L.) By-Products Valorization: Novel Bio Ingredients for Functional Foods

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3216
Author(s):  
Diana I. Santos ◽  
Cátia F. Martins ◽  
Renata A. Amaral ◽  
Luísa Brito ◽  
Jorge A. Saraiva ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Nutritional Value ◽  
Large Scale ◽  
Functional Foods ◽  
Ananas Comosus ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Minimally Processed ◽  
The World ◽  
By Products

Pineapple is consumed on a large scale around the world due to its appreciated sensorial characteristics. The industry of minimally processed pineapple produces enormous quantities of by-products (30–50%) which are generally undervalued. The end-of-life of pineapple by-products (PBP) can be replaced by reuse and renewal flows in an integrated process to promote economic growth by reducing consumption of natural resources and diminishing food waste. In our study, pineapple shell (PS) and pineapple core (PC), vacuum-packed separately, were subjected to moderate hydrostatic pressure (225 MPa, 8.5 min) (MHP) as abiotic stress to increase bromelain activity and antioxidant capacity. Pressurized and raw PBP were lyophilized to produce a stable powder. The dehydrated samples were characterized by the following methodologies: chemical and physical characterization, total phenolic compounds (TPC), antioxidant capacity, bromelain activity, microbiology, and mycotoxins. Results demonstrated that PBP are naturally rich in carbohydrates (66–88%), insoluble (16–28%) and soluble (2–4%) fiber, and minerals (4–5%). MHP was demonstrated to be beneficial in improving TPC (2–4%), antioxidant activity (2–6%), and bromelain activity (6–32%) without affecting the nutritional value. Furthermore, microbial and mycotoxical analysis demonstrated that powdered PC is a safe by-product. PS application is possible but requires previous decontamination to reduce the microbiological load.

Productivity and larval growth of Tenebrio molitor reared on differently composed diets of similar nutritional composition

2021 ◽  
pp. 1-12
Author(s):  
S. Naser El Deen ◽  
F. Lamaj
Keyword(s):  
Wheat Bran ◽  
Larval Growth ◽  
Tenebrio Molitor ◽  
Nutritional Composition ◽  
Brewer’S Yeast ◽  
Larval Weight ◽  
Brewer's Yeast ◽  
Wide Range ◽  
Spent Grain ◽  
By Products

The artificial diet of Tenebrio molitor has been a focal point of many studies that aimed to design the best diet combination. Recently, studies are focusing on the use of by-products and their efficiency as diets for rearing T. molitor. The rearing was successful on a wide range of by-products-based diets. The feed has a profound impact on the lifespan, growth, productivity and nutritional composition of T. molitor. Productivity is one of the traits highly influenced by the diet’s composition, especially macronutrients. This work aims to study the effect of eight different diets on the weight and productivity of females and their progeny weight: larval weight. Wheat bran, brewer’s yeast, spent grain and bread remains were used to compose the diets, based on different inclusion percentages of each by-product. The nutritional composition, mainly the macronutrients, of the diets had a narrow range of differences. The diets were designed in a way to avoid the effect of different nutritional compositions and study the effect of the by-products type only. Results showed that the female’s weight-change during the egg-laying period was not significant under different rearing diets. Moreover, the female’s productivity measured by the larval number showed no significant difference between the different diets. However, the total larval biomass (452.4 mg) was significantly higher for larvae reared on diet A composed of wheat bran and brewer’s yeast. Also, the total mean larval weight was significantly higher for larvae reared on diets A (3.1 mg) and G (3.2 mg) composed of wheat bran, brewer’s yeast and spent grain. The mentioned diets although composed of different by-products have similar amounts of protein and carbohydrates. These results prove that the type of by-products included in the experimental diets does not affect the reproductive performance of T. molitor, while it can affect larval growth.

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