scholarly journals Advances in Extraction Methods to Recover Added-Value Compounds from Seaweeds: Sustainability and Functionality

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 516
Author(s):  
Gabriela S. Matos ◽  
Sara G. Pereira ◽  
Zlatina A. Genisheva ◽  
Ana Maria Gomes ◽  
José A. Teixeira ◽  
...  
Keyword(s):  
Considerable Increase ◽  
Value Added ◽  
Extraction Process ◽  
Extraction Methods ◽  
Added Value ◽  
Alternative Methods ◽  
Thermochemical Conversion ◽  
Industrial Practice ◽  
Potential Applications ◽  
Medicinal Properties

Seaweeds are a renewable natural source of valuable macro and micronutrients that have attracted the attention of the scientists in the last years. Their medicinal properties were already recognized in the ancient traditional Chinese medicine, but only recently there has been a considerable increase in the study of these organisms in attempts to demonstrate their health benefits. The extraction process and conditions to be used for the obtention of value-added compounds from seaweeds depends mainly on the desired final product. Thermochemical conversion of seaweeds, using high temperatures and solvents (including water), to obtain high-value products with more potential applications continues to be an industrial practice, frequently with adverse impact on the environment and products’ functionality. However more recently, alternative methods and approaches have been suggested, searching not only to improve the process performance, but also to be less harmful for the environment. A biorefinery approach display a valuable idea of solving economic and environmental drawbacks, enabling less residues production close to the much recommended zero waste system. The aim of this work is to report about the new developed methods of seaweeds extractions and the potential application of the components extracted.

scholarly journals Comparison between Two Solid-Liquid Extraction Methods for the Recovery of Steviol Glycosides from Dried Stevia Leaves Applying a Numerical Approach

Processes ◽  
2018 ◽  
Vol 6 (8) ◽  
pp. 105 ◽  
Author(s):  
Monica Gallo ◽  
Andrea Formato ◽  
Gaetano Formato ◽  
Daniele Naviglio
Keyword(s):  
Stevia Rebaudiana ◽  
Value Added ◽  
Numerical Approach ◽  
Extraction Process ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Steviol Glycosides ◽  
Stevia Rebaudiana Bertoni ◽  
Solid Liquid Extraction ◽  
Solid Liquid

Abstract: Stevia rebaudiana Bertoni is a perennial shrub belonging to the Asteraceae family. The leaves contain a mixture of steviol glycosides with extraordinary sweetening properties, among which the most important are stevioside and rebaudioside A. These components have a high sweetening power, which is about 300 times that of sucrose, and a negligible calorie content. However, their extraction and purification are not easy. In this paper, the extraction technique under cyclic pressure, known as rapid solid-liquid dynamic extraction (RSLDE), was compared using a Naviglio extractor (NE) with conventional maceration. The aim was to identify an efficient and economically viable method for obtaining high amounts of steviol glycosides in a short time. Furthermore, a numerical model was set up for the solid-liquid extraction process of value-added compounds from natural sources. Several parameters must be evaluated in relation to the characteristics of the parts of the plant subjected to extraction. Therefore, since diffusion and osmosis are highly dependent on temperature, it is necessary to control the temperature of the extraction system. On the other hand, the final aim of this work was to provide a scientific and quantitative basis for RSLDE. Therefore, the results obtained from stevia extracts using the corresponding mathematical model allowed hypothesizing the application of this model to the extraction processes of other vegetable matrices.

scholarly journals Valorization of Mushroom By-Products as a Source of Value-Added Compounds and Potential Applications

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2672 ◽  
Author(s):  
Filipa Antunes ◽  
Sara Marçal ◽  
Oludemi Taofiq ◽  
Alcina M. M. B. Morais ◽  
Ana Cristina Freitas ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Food System ◽  
Animal Feed ◽  
Value Added ◽  
Pharmaceutical Formulations ◽  
Extraction Methods ◽  
Industrial Wastes ◽  
Added Value ◽  
Future Research ◽  
By Products

Nowadays, the food sector is highly concerned with environmental issues and foreseen to develop strategies to reduce waste and losses resulting from activities developed in the food system. An approach is to increment added value to the agro-industrial wastes, which might provide economic growth and environmental protection, contributing to a circular economy. Mushroom by-products represent a disposal problem, but they are also promising sources of important compounds, which may be used due to their functional and nutritional properties. Research has been developed in different fields to obtain value added solutions for the by-products generated during mushroom production and processing. Bioactive compounds have been obtained and applied in the development of nutraceutical and pharmaceutical formulations. Additionally, other applications have been explored and include animal feed, fertilizer, bioremediation, energy production, bio-based materials, cosmetics and cosmeceuticals. The main purpose of this review is to highlight the relevant composition of mushroom by-products and discuss their potential as a source of functional compounds and other applications. Future research needs to explore pilot and industrial scale extraction methods to understand the technological feasibility and the economic sustainability of the bioactive compounds extraction and valorization towards different applications.

scholarly journals Getting Environmentally Friendly and High Added-Value Products from Lignocellulosic Waste

2021 ◽  
Author(s):  
Elizabeth Quintana Rodríguez ◽  
Domancar Orona Tamayo ◽  
José Nicacio González Cervantes ◽  
Flora Itzel Beltrán Ramirez ◽  
María Alejandra Rivera Trasgallo ◽  
...  
Keyword(s):  
Value Added ◽  
Environmentally Friendly ◽  
Barrier Properties ◽  
Nanofibrillated Cellulose ◽  
Global Market ◽  
Added Value ◽  
Lignocellulosic Waste ◽  
Potential Applications ◽  
Cellulose Nanomaterials ◽  
Micro Nanofibrillated Cellulose

In recent years, alternatives have been sought for the reuse of lignocellulosic waste generated by agricultural and other industries because it is biodegradable and renewable. Lignocellulosic waste can be used for a wide variety of applications, depending on their composition and physical properties. In this chapter, we focus on the different treatments that are used for the extraction of natural cellulose fibers (chemical, physical, biological methods) for more sophisticated applications such as reinforcement in biocomposites. Due to the different morphologies that the cellulose can present, depending from sources, it is possible to obtain cellulose nanocrystals (CNCs), micro- nanofibrillated cellulose (MFC/NFC), and bacterial nanocellulose (BNC) with different applications in the industry. Among the different cellulose nanomaterials highlighted characteristics, we can find improved barrier properties for sound and moisture, the fact that they are environmentally friendly, increased tensile strength and decreased weight. These materials have the ability to replace metallic components, petroleum products, and nonrenewable materials. Potential applications of cellulose nanomaterials are present in the automotive, construction, aerospace industries, etc. Also, this chapter exhibits global market predictions of these new materials or products. In summary, lignocellulosic residues are a rich source of cellulose that can be extracted to obtain products with high value-added and eco-friendly characteristics.

scholarly journals Brewer’s Spent Grains: Possibilities of Valorization, a Review

2020 ◽  
Vol 10 (16) ◽  
pp. 5619 ◽  
Author(s):  
Ancuța Chetrariu ◽  
Adriana Dabija
Keyword(s):  
Food Packaging ◽  
Nutritional Value ◽  
Low Cost ◽  
Value Added ◽  
Extraction Process ◽  
Extraction Methods ◽  
Point Of View ◽  
Spent Grains ◽  
Ultrasonic Assisted ◽  
Spent Grain

This review was based on updated research on how to use brewer’s spent grains (BSG). The use of BSG was considered both in food, as an ingredient or using value-added components derived from brewer’s spent grain, or in non-food products such as pharmaceuticals, cosmetics, construction, or food packaging. BSG is a valuable source of individual components due to its high nutritional value and low cost that is worth exploiting more to reduce food waste but also to improve human health and the environment. From the bioeconomy point of view, biological resources are transformed into bioenergetically viable and economically valuable products. The pretreatment stage of BSG biomass plays an important role in the efficiency of the extraction process and the yield obtained. The pretreatments presented in this review are both conventional and modern extraction methods, such as solvent extractions or microwave-assisted extractions, ultrasonic-assisted extractions, etc.

scholarly journals Biodiesel and Other Value-Added Products from Bio-Oil Obtained from Agrifood Waste

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 797
Author(s):  
Francisco José Sánchez-Borrego ◽  
Paloma Álvarez-Mateos ◽  
Juan F. García-Martín
Keyword(s):  
Fossil Fuels ◽  
Value Added ◽  
Extraction Methods ◽  
H2 Production ◽  
Future Research ◽  
Bio Oil ◽  
Recent Developments ◽  
Potential Applications ◽  
Pyrolysis Of Biomass ◽  
Promising Source

Bio-oil is a promising source of chemicals and renewable fuels. As the liquid phase obtained from the pyrolysis of biomass, the composition and amount of bio-oil generated depend not only on the type of the biomass but also on the conditions under which pyrolysis is performed. Most fossil fuels can be replaced by bio-oil-derived products. Thus, bio-oil can be used directly or co-fed along with fossil fuels in boilers, transformed into fuel for car engines by hydrodeoxygenation or even used as a more suitable source for H2 production than biomass. On the other hand, due to its rich composition in compounds resulting from the pyrolysis of cellulose, hemicellulose and lignin, bio-oil co-acts as a source of various value-added chemicals such as aromatic compounds. This review presents an overview of the potential applications of bio-oils and the pyrolysis conditions under which they are obtained. Then, different extraction methods for value-added chemicals, along with the most recent developments, are discussed and future research directions for bio-oil upgrades are highlighted.

scholarly journals Recent advances in oregano (Lippia graveolens and Poliomintha Iongiflora): Extraction methods component determination, and their potential applications.

Quimica Hoy ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 15
Author(s):  
V. M. Jiménez Pérez ◽  
B. M. Muñoz Flores ◽  
E. Hernández Fernández ◽  
D. Celis ◽  
J. Treviño Carreón ◽  
...  
Keyword(s):  
Essential Oil ◽  
Extraction Methods ◽  
Oil Extraction ◽  
Recent Advances ◽  
Potential Applications ◽  
Medicinal Properties ◽  
Main Components

The work presented here describes the most significant advances in concerning the chemistry of oregano (Lippia graveolens and Poliomintha longiflora). We present new, green methods for essential oil extraction as well as the potential medicinal properties of said oil. This review also focuses on the determination of its main components, such as carvacrol and thymol. We describe their syntesis, reactivity, and potential applications of both compounds in various areas.

scholarly journals Characterising and testing European business cycles asymmetry

Equilibrium ◽  
2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Zlatko J. Kovacic ◽  
Milos Vilotic
Keyword(s):  
Economic Policy ◽  
Business Cycles ◽  
Linear Models ◽  
Value Added ◽  
Statistical Modelling ◽  
Extraction Methods ◽  
Alternative Methods ◽  
Economic Implication ◽  
Band Filter ◽  
European Business

Research background: One of business cycles stylised facts is that contractions are shorter than expansions, but less persistent, more volatile, and therefore asymmetric. Investigating existence and type of business cycles asymmetry is important for analysis of economic policy and statistical modelling. Economic implication of business cycles asymmetry is that economic policy should be different in a period of contractions than in one of expansion. Statistical implication is that linear models of business cycles cannot capture this stylised fact. Purpose of the article: The article has two objectives: extend the literature on the business cycles asymmetry by testing data from 36 European countries including countries never been analysed before and test robustness of the results to extraction methods and asymmetry tests used. Methods: Quarterly GDP series from Eurostat database covering period 2000q1–2016q3 were used with two exceptions. In the case of Bosnia and Herzegovina and Montenegro quarterly industrial productions indexes were used. Series were prepared by removing seasonal component using X13-ARIMA procedure. To assess robustness of asymmetry tests results to alternative methods of detrending business cycles were extracted using two filters: Corbae-Ouliaris ideal band filter and double Hodrick-Prescott filter. For testing the deepness and steepness asymmetry of the business cycles three tests were used: Mills, Mira and Sichel tests. Findings & value added: Weaker evidence of deepness asymmetry was found in Cyprus, Montenegro and Turkey cycles, where all three tests statistics for both filters have a negative sign. However, only for one of the tests in each country the result was statistically significant. For two other countries, Germany and Sweden, four out of six tests indicated deepness asymmetry, but only one of these tests results was statistically significant. Most of the cycles show steepness asymmetry, with the exception of Ireland business cycles, and to a certain extent cycles of Poland, Malta, Montenegro and Spain.

scholarly journals Identification and Recovery of Valuable Bioactive Compounds from Potato Peels: A Comprehensive Review

Antioxidants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1630
Author(s):  
Beatriz Rodríguez-Martínez ◽  
Beatriz Gullón ◽  
Remedios Yáñez
Keyword(s):  
Biological Activities ◽  
Chemical Compounds ◽  
Extraction Methods ◽  
Added Value ◽  
Antioxidant Compounds ◽  
Potato Peel ◽  
Industrial Processing ◽  
Potential Applications ◽  
Potato Peels ◽  
By Products

Nowadays, the potato is one of the most cultivated and consumed food crops in the world and, in recent years, its production has experienced a sharp increase. Its industrial processing generates several by-products that are wasted and cause economic and environmental problems. Among them, potato peel stands out, representing up to 10% of the total potato residues obtained in the processing. On the other hand, these wastes, in addition to presenting antioxidant compounds, are rich in interesting chemical compounds of great value in a biorefinery model. This review summarizes the main compounds present in potato skins as well as the most used and innovative extraction methods employed for their isolation, with special emphasis on the fractions with biological activities. In addition, a sustainable biorefinery proposal focused on obtaining high added-value products with potential applications in the pharmaceutical, food, nutraceutical, or cosmetic industries is included.

scholarly journals Applications of Nonconventional Green Extraction Technologies in Process Industries: Challenges, Limitations and Perspectives

2020 ◽  
Vol 12 (13) ◽  
pp. 5244
Author(s):  
Gertrude Fomo ◽  
Tafirenyika Nyamayaro Madzimbamuto ◽  
Tunde Victor Ojumu
Keyword(s):  
Electric Fields ◽  
Supercritical Co2 ◽  
Raw Materials ◽  
Value Added ◽  
Extraction Process ◽  
Extraction Methods ◽  
Extraction Yield ◽  
Process Industries ◽  
Functional Value ◽  
Work Done

This study reviewed five different nonconventional technologies which are aligned with green concepts of product recovery from raw materials on industrial scale, with minimal energy consumption and chemical use. Namely, this study reviewed supercritical fluid extraction (SCFE), pressurized liquid extraction (PLE), microwave-assisted extraction (MAE), ultrasound extraction (UAE) and pulsed electric fields extraction (PEFE). This paper provides an overview of relevant innovative work done in process industries on different plant matrices for functional value-added compounds and byproduct production. A comparison of the five extraction methods showed the supercritical CO2 (SC-CO2) process to be more reliable despite some limitations and challenges in terms of extraction yield and solubility of some bioactive compounds when applied in processing industries. However, these challenges can be solved by using ionic liquids as a trainer or cosolvent to supercritical CO2 during the extraction process. The choice of ionic liquid over organic solvents used to enhance extraction yield and solubility is based on properties such as hydrophobicity, polarity and selectivity in addition to a safe environment.

scholarly journals Synthesis of A Sustainable Sago-Based Value Chain via Fuzzy Optimisation Approach

2018 ◽  
Vol 152 ◽  
pp. 01004 ◽  
Author(s):  
Jeffrey Hong Seng Chong ◽  
Yoke Kin Wan ◽  
Viknesh Andiappan
Keyword(s):  
Waste Management ◽  
Value Chain ◽  
Value Added ◽  
Extraction Process ◽  
Sago Starch ◽  
Industrial Case Study ◽  
Industrial Practice ◽  
Sago Bark ◽  
Value Added Products

Sago starch is one of the staple foods for human, especially in Asia’s Region. It can be produced via sago starch extraction process (SSEP). During the SSEP, several types of sago wastes are generated such as sago fiber (SF), sago bark (SB) and sago wastewater (SW). With the increase in production of existing factories and sago mills, the sago industrial practice in waste disposal management is gaining more attention, thus implementation of effective waste management is vital. One of the promising ways to have effective waste management is to create value out of the sago wastes. In a recent study, sago-based refinery, which is a facility to convert sago wastes into value-added products (e.g., bio-ethanol and energy) was found feasible. However, the conversion of other value added products from sago wastes while considering the environmental impact has not been considered in sago value chain. Therefore, an optimum sago value chain, which involved conversion activities of sago wastes into value-added products, is aimed to be synthesised in this work. The optimum sago value chain will be evaluated based on profit and carbon emissions using fuzzy-based optimisation approach via a commercial optimisation software, Lingo 16.0. To illustrate the the developed approach, an industrial case study has been solved in this work.

Sign in / Sign up

Export Citation Format

Share Document