Oil Press-Cakes and Meals Valorization through Circular Economy Approaches: A Review

The food industry generates a large amount of waste every year, which opens up a research field aimed at minimizing and efficiently managing this issue to support the concept of zero waste. From the extraction process of oilseeds results oil cakes. These residues are a source of bioactive compounds (protein, dietary fiber, antioxidants) with beneficial properties for health, that can be used in foods, cosmetics, textile, and pharmaceutical industries. They can also serve as substrates for the production of enzymes, antibiotics, biosurfactants, and mushrooms. Other applications are in animal feedstuff and for composites, bio-fuel, and films production. This review discusses the importance of oilseed and possible valorization methods for the residues obtained in the oil industry.

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Valorization of Kiwi by-Products for the Recovery of Bioactive Compounds: Circular Economy Model

Proceedings ◽

10.3390/foods_2020-07647 ◽

2020 ◽

Vol 70 (1) ◽

pp. 9

Author(s):

Franklin Chamorro ◽

María Carpena ◽

Bernabé Nuñez-Estevez ◽

Miguel A. Prieto ◽

Jesus Simal-Gandara

Keyword(s):

Bioactive Compounds ◽

Circular Economy ◽

Agricultural Production ◽

Organic Waste ◽

Antimicrobial Activities ◽

Added Value ◽

Economic Returns ◽

Industrial Processing ◽

Pharmaceutical Industries ◽

By Products

Currently, agricultural production generates large amounts of organic waste, both from the maintenance of farms and crops, and from the industrialization of the product. Generally, these wastes are accumulated in landfills or burned, sometimes causing environmental problems. However, many scientific studies suggest that these residues are rich in bioactive compounds, so these matrices could be revalued for their use in food, cosmetic, or pharmaceutical industries. In this way, the circular and sustainable economy is favored, while obtaining products with high added value. In this case, this approach is applied to the residues generated from kiwi production, since numerous studies have shown the high content of kiwi in bioactive compounds of interest, such as phenolic compounds, vitamins, and carotenoids. These compounds have been reported for their antioxidant, anti-inflammatory, and antimicrobial activities, among other beneficial properties for health such as its use as prebiotic. Therefore, this article reviews the potential of residues derived from industrial processing and agricultural maintenance of kiwi as promising matrices for the development of new nutraceutical, cosmetic, or pharmacological products, obtaining, at the same time, economic returns and a reduction of the environmental impact of this industry, attaching it to the perspective of the circular economy.

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Bioactive Compounds in Bael Fruit Pulp Waste: Ultrasound-Assisted Extraction, Characterization, Modeling, and Optimization Approaches

Biointerface Research in Applied Chemistry ◽

10.33263/briac112.93189334 ◽

2020 ◽

Vol 11 (2) ◽

pp. 9318-9334

Keyword(s):

Bioactive Compounds ◽

Food Additives ◽

Extraction Process ◽

Coefficient Of Determination ◽

Fruit Pulp ◽

Ultrasound Assisted Extraction ◽

Modeling And Optimization ◽

Assisted Extraction ◽

Pharmaceutical Industries ◽

Ultrasound Assisted

Bael fruit is an abundant source of bioactive compounds that have importance in the food and pharmaceutical industries. The process of extraction of the bael fruit juice produced a higher percentage of bael fruit pulp waste (BFPW) (37.33 %), which was recycled for the extraction of bioactive compounds. Thus the bioactive compounds like polyphenols, flavonoids, and carotenoids were extracted from BFPW by using the ultrasound-assisted extraction (UAE) technique. The modeling and optimization of the extraction process were carried out by using the experimental design of response surface methodology (RSM). The ethanol concentration of 51.22 %, ultrasound amplitude of 51.45 %, and ultrasound treatment time of 6.11 minutes were obtained to be an RSM optimized values of extraction process variables. The lower values of root mean squared error (RMSE) and mean absolute error (MAE) and higher values of coefficient of determination (R2) indicated admissibility and acceptability of RSM. This extraction process of bioactive compounds has the potential to implement it on an industrial scale for the formulation of food additives and medicines.

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Intensified green-based extraction process as a circular economy approach to recover bioactive compounds from soursop seeds (Annona muricata L.)

Food Chemistry X ◽

10.1016/j.fochx.2021.100164 ◽

2021 ◽

pp. 100164

Author(s):

Patricia C. Mesquita ◽

Luiz Gustavo G. Rodrigues ◽

Simone Mazzutti ◽

Mayara da Silva ◽

Luciano Vitali ◽

...

Keyword(s):

Bioactive Compounds ◽

Circular Economy ◽

Extraction Process ◽

Annona Muricata

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Vegetable by-products in the European food legislative framework

Hrvatski časopis za prehrambenu tehnologiju biotehnologiju i nutricionizam ◽

10.31895/hcptbn.16.3-4.1 ◽

2021 ◽

Vol 16 (3-4) ◽

pp. 115-122

Author(s):

Nada Knežević ◽

Jasmina Ranilović ◽

Tanja Cvetković ◽

Slavka Grbavac ◽

Marina Palfi

Keyword(s):

Fatty Acids ◽

Dietary Fiber ◽

Bioactive Compounds ◽

Circular Economy ◽

Food Products ◽

Legislative Framework ◽

Food Legislation ◽

By Products

Vegetable by-products are a source of many useful bioactive compounds, dietary fiber, fatty acids and proteins that have a great potential in the development of new food products and the promotion of the circular economy and sustainability.Considering processed pepper by-products as an example, the aim of this paper is to provide an overview of EU food legislation that should be taken into account before placing such products on the market, as well as of the voluntary labeling of functional, nutritional and sustainability benefits important for consumers.

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Lovage (Levisticum officinale W.D.J. Koch) Roots: A Source of Bioactive Compounds towards a Circular Economy

Resources ◽

10.3390/resources9070081 ◽

2020 ◽

Vol 9 (7) ◽

pp. 81

Author(s):

Rafael Mascoloti Spréa ◽

Ângela Fernandes ◽

Tiane C. Finimundy ◽

Carla Pereira ◽

Maria José Alves ◽

...

Keyword(s):

Phenolic Compounds ◽

Bioactive Compounds ◽

Circular Economy ◽

Folk Medicine ◽

Thiobarbituric Acid ◽

Biological Properties ◽

Hexane Extract ◽

Pharmaceutical Industries ◽

Hydroethanolic Extract ◽

First Time

Lovage (Levisticum officinale W.D.J. Koch) is an aromatic plant from the Apiaceae (Umbelliferae) family used as a condiment in several regions of Europe and also described to have medicinal properties. While the aerial parts are used as foods, the roots are generally discarded. In the past, lovage roots were used in folk medicine for their diuretic, carminative, and spasmolytic properties. Therefore, the exploitation of this undervalued part of the plant can be a source of valuable bioactive compounds for food and/or pharmaceutical industries. Thus, in this study, extracts of different polarity were prepared and studied regarding their chemical composition and bioactive properties. To the best of our knowledge, the composition in phenolic compounds and the volatile profile of the n-hexane extract are reported for the first time. A total of 24 compounds were identified by GC-MS in the n-hexane extract, evidencing a high relative abundance of phthalides. A total of eight phenolic compounds were identified in lovage root extracts (decoction and hydroethanolic extract), with vanillic acid being the major compound. Regarding antioxidant activity, also reported for the first time, decoction and hydroethanolic extract exhibited a high antioxidant capacity in thiobarbituric acid reactive substances (TBARS) (179 ± 11 μg/mL) and in oxidative hemolysis (OxHLIA) assays (510 ± 6 μg/mL), respectively. n-Hexane extract showed relevant anti-proliferative activity against all tumor cell lines tested (GI50, 48–69 μg/mL), despite inhibiting also the growth of a non-tumoral hepatocyte cell line, however, presenting a significantly higher GI50 value (147 μg/mL). This study revealed that lovage root, an agri-food residue, can be a source of valuable bioactive compounds also presenting biological properties that deserve being explored, which could lead to a circular economy for food and/or the pharmaceutical industry.

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Monomers, Materials and Energy from Coffee By-Products: A Review

Sustainability ◽

10.3390/su13126921 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6921

Author(s):

Laura Sisti ◽

Annamaria Celli ◽

Grazia Totaro ◽

Patrizia Cinelli ◽

Francesca Signori ◽

...

Keyword(s):

Circular Economy ◽

Food Industry ◽

Food Packaging ◽

Low Cost ◽

Biofuel Production ◽

Material Technology ◽

Coffee Production ◽

Coffee Pulp ◽

Coffee Waste ◽

By Products

In recent years, the circular economy and sustainability have gained attention in the food industry aimed at recycling food industrial waste and residues. For example, several plant-based materials are nowadays used in packaging and biofuel production. Among them, by-products and waste from coffee processing constitute a largely available, low cost, good quality resource. Coffee production includes many steps, in which by-products are generated including coffee pulp, coffee husks, silver skin and spent coffee. This review aims to analyze the reasons why coffee waste can be considered as a valuable source in recycling strategies for the sustainable production of bio-based chemicals, materials and fuels. It addresses the most recent advances in monomer, polymer and plastic filler productions and applications based on the development of viable biorefinery technologies. The exploration of strategies to unlock the potential of this biomass for fuel productions is also revised. Coffee by-products valorization is a clear example of waste biorefinery. Future applications in areas such as biomedicine, food packaging and material technology should be taken into consideration. However, further efforts in techno-economic analysis and the assessment of the feasibility of valorization processes on an industrial scale are needed.

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Utilization of Cumbeba (Tacinga inamoena) Residue: Drying Kinetics and Effect of Process Conditions on Antioxidant Bioactive Compounds

Foods ◽

10.3390/foods10040788 ◽

2021 ◽

Vol 10 (4) ◽

pp. 788

Author(s):

João Paulo de Lima Ferreira ◽

Alexandre José de Melo Queiroz ◽

Rossana Maria Feitosa de Figueirêdo ◽

Wilton Pereira da Silva ◽

Josivanda Palmeira Gomes ◽

...

Keyword(s):

Phenolic Compounds ◽

Bioactive Compounds ◽

Fixed Bed ◽

Drying Kinetics ◽

Raw Material ◽

Process Conditions ◽

Temperature Range ◽

Water Diffusivity ◽

Pharmaceutical Industries ◽

Effective Water

The residue generated from the processing of Tacinga inamoena (cumbeba) fruit pulp represents a large amount of material that is discarded without proper application. Despite that, it is a raw material that is source of ascorbic acid, carotenoids and phenolic compounds, which are valued in nutraceutical diets for allegedly combating free radicals generated in metabolism. This research paper presents a study focused on the mathematical modeling of drying kinetics and the effect of the process on the level of bioactive of cumbeba residue. The experiments of cumbeba residue drying (untreated or whole residue (WR), crushed residue (CR) and residue in the form of foam (FR)) were carried out in a fixed-bed dryer at four air temperatures (50, 60, 70 and 80 °C). Effective water diffusivity (Deff) was determined by the inverse method and its dependence on temperature was described by an Arrhenius-type equation. It was observed that, regardless of the type of pretreatment, the increase in air temperature resulted in higher rate of water removal. The Midilli model showed better simulation of cumbeba residue drying kinetics than the other models tested within the experimental temperature range studied. Effective water diffusivity (Deff) ranged from 6.4890 to 11.1900 × 10−6 m2/s, 2.9285 to 12.754 × 10−9 m2/s and 1.5393 × 10−8 to 12.4270 × 10−6 m2/s with activation energy of 22.3078, 46.7115 and 58.0736 kJ/mol within the temperature range of 50–80 °C obtained for the whole cumbeba, crushed cumbeba and cumbeba residue in the form of foam, respectively. In relation to bioactive compounds, it was observed that for a fixed temperature the whole residue had higher retention of bioactive compounds, especially phenolic compounds, whereas the crushed residue and the residue in the form of foam had intermediate and lower levels, respectively. This study provides evidence that cumbeba residue in its whole form can be used for the recovery of natural antioxidant bioactive compounds, mainly phenolic compounds, with the possibility of application in the food and pharmaceutical industries.

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Integrated Mechanistic Engineering Models and Macroeconomic Input-Output approach to Model Physical Economy for Evaluating the Impact of transition to Circular Economy

Energy & Environmental Science ◽

10.1039/d1ee00544h ◽

2021 ◽

Author(s):

Venkata Sai Gargeya Vunnava ◽

Shweta Singh

Keyword(s):

Circular Economy ◽

Emerging Technologies ◽

Low Carbon ◽

Input Output ◽

Zero Waste ◽

Engineering Models ◽

The Impact ◽

Sustainable Transition

Sustainable transition to low carbon and zero waste economy requires a macroscopic evaluation of opportunities and impact of adopting emerging technologies in a region. However, a full assessment of current...

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Circular economy for fashion industry: Use of waste from the food industry for the production of biotextiles

Technological Forecasting and Social Change ◽

10.1016/j.techfore.2021.120858 ◽

2021 ◽

Vol 169 ◽

pp. 120858

Author(s):

Ana Paula Provin ◽

Ana Regina de Aguiar Dutra ◽

Isabel Cristina Aguiar de Sousa e Silva Gouveia ◽

e Anelise Leal Vieira Cubas

Keyword(s):

Circular Economy ◽

Food Industry ◽

Fashion Industry

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Integration of Digital Economy and Circular Economy: Current Status and Future Directions

Sustainability ◽

10.3390/su13137217 ◽

2021 ◽

Vol 13 (13) ◽

pp. 7217

Author(s):

Zhen Liu ◽

Jing Liu ◽

Mohamed Osmani

Keyword(s):

Circular Economy ◽

Digital Technology ◽

Global Economy ◽

Digital Economy ◽

Research Field ◽

Research Progress ◽

Current Status ◽

Future Research ◽

Disruptive Effect ◽

The European Union

Circular economy (CE) is a concept actively advocated by the European Union (EU), China, Japan, and the United Kingdom. At present, CE is considered to grant the most traction for companies to achieve sustainable development. However, CE is still rarely adopted by enterprises. As the backbone of the fourth industrial revolution, the digital economy (DE) is considered to have a disruptive effect. Studies have shown that digital technology has great potential in promoting the development of CE. Especially during the COVID-19 epidemic that has severely negatively affected the global economy, environment, and society, CE and DE are receiving high attention from policy makers, practitioners, and scholars around the world. However, the integration of CE and digital technology is a small and rapidly developing research field that is still in its infancy. Although there is a large amount of research in the fields of CE and DE, respectively, there are few studies that look into integrating these two fields. Therefore, the purpose of this paper is to explore the research progress and trends of the integration of CE and DE, and provide an overview for future research. This paper adopts a bibliometric research method, employs the Web of Science database as its literature source, and uses VOSviewer visual software to carry out keyword co-occurrence analysis, which focuses on publication trends, journal sources, keyword visualization, multidisciplinary areas, life cycle stages, and application fields.

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