scholarly journals Valorization of Wastewater from Table Olives: NMR Identification of Antioxidant Phenolic Fraction and Microwave Single-Phase Reaction of Sugary Fraction

Antioxidants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1652
Author(s):  
Alberto J. Huertas-Alonso ◽  
Mohsen Gavahian ◽  
Diego J. González-Serrano ◽  
Milad Hadidi ◽  
Manuel Salgado-Ramos ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Single Phase ◽  
Environmental Concern ◽  
Value Added ◽  
Phase Reaction ◽  
Phenolic Fraction ◽  
Processing Cost ◽  
Development Goals ◽  
Olive Industry ◽  
Nmr Identification

The table olive industry is producing a huge amount of wastewater, which is a post-processing cost and an environmental concern. The present study aims to valorize this processing by-product to obtain a value-added product, thereby enhancing resource efficiency and contributing to achieving sustainable development goals (SDGs). In this sense, a chemical reaction-based platform was developed to obtain valuable components, such as levulinic acid (LA) and 5-hydromethylfurfural (HMF). The products were then analyzed using NMR identification of the antioxidant phenolic fraction and microwave single-phase reaction of the sugary fraction. According to the results, the highest concentration of phenolic compounds does not correspond to the sample directly obtained from NaOH treatment (S1), indicating that water washing steps (S2–S5) are fundamental to recover phenolic substances. Moreover, glucose was presented in the sugary fraction that can be transformed into levulinic acid by a single-phase reaction under microwave irradiation. The information provided in this manuscript suggests that the wastewater from the olive processing industry can be valorized to obtain valuable products.

scholarly journals Olive Fruit and Leaf Wastes as Bioactive Ingredients for Cosmetics—A Preliminary Study

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 245
Author(s):  
María de la Luz Cádiz-Gurrea ◽  
Diana Pinto ◽  
Cristina Delerue-Matos ◽  
Francisca Rodrigues
Keyword(s):  
Olive Oil ◽  
High Performance ◽  
Value Added ◽  
Bioactive Compound ◽  
In Vitro Assays ◽  
Oil Consumption ◽  
Cosmetic Ingredients ◽  
Bioactive Ingredients ◽  
Olive Industry

Olea europaea cultivar, native in the Mediterranean basin, has expanded worldwide, mainly due to the olive oil industry. This expansion is attributed to the benefits of olive oil consumption, since this product is rich in nutritional and bioactive compounds. However, the olive industry generates high amounts of wastes, which could be related to polluting effects on soil and water. To minimize the environmental impact, different strategies of revalorization have been proposed. In this sense, the aim of this work was to develop high cosmetic value added oleuropein-enriched extracts (O20 and O30), a bioactive compound from olive byproducts, performing a comprehensive characterization using high performance liquid chromatography coupled to mass spectrometry and evaluate their bioactivity by in vitro assays. A total of 49 compounds were detected, with oleuropein and its derivatives widely found in O30 extract, whereas iridoids were mainly detected in O20 extract. Moreover, 10 compounds were detected for the first time in olive leaves. Both extracts demonstrated strong antioxidant and antiradical activities, although O30 showed higher values. In addition, radical oxygen and nitrogen species scavenging and enzyme inhibition values were higher in O30, with the exception of HOCl and hyaluronidase inhibition assays. Regarding cell viability, olive byproduct extracts did not lead to a decrease in keratinocytes viability until 100 µg/mL. All data reported by the present study reflect the potential of industrial byproducts as cosmetic ingredients.

scholarly journals Mini-Review on the Synthesis of Furfural and Levulinic Acid from Lignocellulosic Biomass

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1234
Author(s):  
Zhiwei Jiang ◽  
Di Hu ◽  
Zhiyue Zhao ◽  
Zixiao Yi ◽  
Zuo Chen ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Lignocellulosic Biomass ◽  
Catalytic System ◽  
Levulinic Acid ◽  
Value Added ◽  
Environmental Issues ◽  
Alternative Route ◽  
Catalytic Systems ◽  
Renewable Biomass ◽  
Platform Chemicals

Efficient conversion of renewable biomass into value-added chemicals and biofuels is regarded as an alternative route to reduce our high dependence on fossil resources and the associated environmental issues. In this context, biomass-based furfural and levulinic acid (LA) platform chemicals are frequently utilized to synthesize various valuable chemicals and biofuels. In this review, the reaction mechanism and catalytic system developed for the generation of furfural and levulinic acid are summarized and compared. Special efforts are focused on the different catalytic systems for the synthesis of furfural and levulinic acid. The corresponding challenges and outlooks are also observed.

A structure–activity relationship study using DFT analysis of Bronsted–Lewis acidic ionic liquids and synergistic effect of dual acidity in one-pot conversion of glucose to value-added chemicals

2018 ◽  
Vol 42 (2) ◽  
pp. 1423-1430 ◽  
Author(s):  
Firdaus Parveen ◽  
Tanmoy Patra ◽  
Sreedevi Upadhyayula
Keyword(s):  
Ionic Liquids ◽  
Synergistic Effect ◽  
Formic Acid ◽  
Levulinic Acid ◽  
Value Added ◽  
One Pot ◽  
Structure Activity ◽  
Acidic Ionic Liquids ◽  
Commercially Important ◽  
Relationship Study

The catalytic conversion of biomass-derived carbohydrates to value-added chemicals, such as 5-hydroxymethylfurfural, levulinic acid, and formic acid, is a commercially important reaction and requires the use of both Lewis and Bronsted acids.

scholarly journals Rural Tourism within the Sustainable Development Goals: the Case of Ukraine

2021 ◽  
Vol 95 ◽  
pp. 01004
Author(s):  
Hanna Shevchenko ◽  
Mykola Petrushenko
Keyword(s):  
Sustainable Development ◽  
Sustainable Development Goals ◽  
Value Added ◽  
Graphical Analysis ◽  
Rural Tourism ◽  
Inclusive Development ◽  
The Sustainable Development ◽  
Green Tourism ◽  
Development Goals

Research background: rural tourism is an economic and environmental activity that fits harmoniously into the concept of sustainable and inclusive development. In Ukraine, it is called rural green tourism, but in practice not all aspects of it can meet the Sustainable Development Goals 2030. Purpose of the article: to analyze the relationship between the structures of the rural tourism goals and the SDGs, to demonstrate the evolution, possibilities of the development on the example of Ukraine’s rural tourism, especially in the framework of the European Green Deal. Methods: factor analysis – when studying the structure of the rural tourism goals and the factors that affect it, as well as when comparing it with the structure of other sustainable activities; elements of graph theory – in the graphical analysis of the Sustainable Development Goals decomposition in their projection into the plane of rural tourism. Findings & Value added: the structure of the rural green tourism goals in Ukraine have been harmonized with the Sustainable Development Goals 2030. Sustainability factors have been identified that allow the tourism and recreation sphere in the medium and long term perspective not only to form a competitive market for relevant services, but also to serve as an important component of the inclusive development. Factors of tourism sphere transformation due to the coronavirus pandemic are taken into consideration. The concept of the phased programming in sphere of rural tourism in Ukraine within the framework of the European Green Deal 2030 and 2050 has been improved.

Critical factors for levulinic acid production from starch-rich food waste: solvent effects, reaction pressure, and phase separation

2021 ◽  
Author(s):  
Shanta Dutta ◽  
Iris K. M. Yu ◽  
Jiajun Fan ◽  
James H. Clark ◽  
Daniel C. W. Tsang
Keyword(s):  
Sustainable Development ◽  
Phase Separation ◽  
Food Waste ◽  
Circular Economy ◽  
Levulinic Acid ◽  
Sustainable Development Goals ◽  
Critical Factors ◽  
Reaction Pressure ◽  
Platform Chemicals ◽  
Development Goals

This study provides new and critical insights into sustainable catalytic conversion of food (bread) waste to platform chemicals for achieving sustainable development goals and fostering a circular economy.

Boosting levulinic acid hydrogenation to value-added 1,4-pentanediol using microwave-assisted gold catalysis

2019 ◽  
Vol 380 ◽  
pp. 267-277 ◽  
Author(s):  
F. Bucciol ◽  
S. Tabasso ◽  
G. Grillo ◽  
F. Menegazzo ◽  
M. Signoretto ◽  
...  
Keyword(s):  
Levulinic Acid ◽  
Value Added ◽  
Gold Catalysis ◽  
Microwave Assisted

scholarly journals Soil Erosion as an Environmental Concern ... for Everyone?

Proceedings ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 72
Author(s):  
Jesús Rodrigo-Comino
Keyword(s):  
Soil Erosion ◽  
Scientific Community ◽  
Sustainable Development Goals ◽  
Environmental Concern ◽  
Human Perception ◽  
The Sustainable Development ◽  
Development Goals ◽  
Negative Impacts ◽  
And Diffusion

Nowadays, the scientific community is aware of the negative environmental impacts of soil erosion on ecosystem services. Soil erosion is one of the most important causes of land degradation because of its immediate influence of the most fertile topsoil parts. It is well-known that questions related to who, what, why, where and when soil erosion causes negative impacts must be considered by stakeholders and policymakers. However, why do the Sustainable Development Goals tell anything about soil erosion? In this keynote, we will try to show the importance to develop tools which can be used to assess soil erosion to obtain convincing results for stakeholders and policymakers. According to this fact, we present some studies related to in situ soil erosion measures and assessments of human perception and economical approaches. We fully agree that these kinds of studies will greatly benefit the visibility, trust and diffusion of our results. What do you think about this question? Let me know your opinion.

Na2.3Cu1.1Mn2O7−δ nanoflakes as enhanced cathode materials for high-energy sodium-ion batteries achieved by a rapid pyrosynthesis approach

2020 ◽  
Vol 8 (2) ◽  
pp. 770-778 ◽  
Author(s):  
Vaiyapuri Soundharrajan ◽  
Balaji Sambandam ◽  
Muhammad H. Alfaruqi ◽  
Sungjin Kim ◽  
Jeonggeun Jo ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Single Phase ◽  
High Energy ◽  
Positive Electrode ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Phase Reaction

Na2.3Cu1.1Mn2O7−δ nanoflakes prepared by an ultrafast pyrosynthesis approach are used as the positive electrode for SIBs. In situ GITT and XRD results support the occurrence of a single-phase reaction in the Na2.3Cu1.1Mn2O7−δ nanoflakes cathode during Na+ (de)intercalation.

The Synthesis of Levulinic Acid Synthesis from Glucose Using ZSM-5 Zeolite Catalyst

2013 ◽  
Vol 291-294 ◽  
pp. 782-785 ◽  
Author(s):  
Jun Ping Zhuang ◽  
Chun Sheng Pang ◽  
Ying Liu
Keyword(s):  
Reaction Time ◽  
Levulinic Acid ◽  
Zeolite Catalyst ◽  
Maximum Yield ◽  
Value Added ◽  
Acid Synthesis ◽  
Temperature Reaction ◽  
Experimental Parameters ◽  
Fuels And Chemicals ◽  
Broad Variety

Levulinic acid （LA）is a highly versatile platform chemical that can be converted into a broad variety of value-added fuels and chemicals. LA can be produced from the botanic biomass by hydrolyzing. The aim of the present study is to investigate the conversion of glucose to LA by ZSM-5 zeolite catalyst for LA production and optimized to obtain the maximum yield of LA. The main experimental parameters are the amount of ZSM-5 zeolite added, reaction temperature, reaction time and concentration of glucose. The results showed that the optimization of the conversion of glucose to LA by ZSM-5 zeolite. An optimized LA yield was obtained at 190 °C for 2.5 h with 3 g ZSM-5 zeolite catalys and the highest LA yield was 69. 32%.

Development of Solid Nitriding Method Using Thermosetting Waste Plastic

2006 ◽  
Vol 118 ◽  
pp. 121-130
Author(s):  
Kazumasa Sakoshi ◽  
Chuji Kagaya ◽  
Eiji Kagaya
Keyword(s):  
High Performance ◽  
Environmental Concern ◽  
Nitrided Layer ◽  
Value Added ◽  
Industrial Wastes ◽  
Melamine Resin ◽  
Hardening Treatment ◽  
Resource Exhaustion ◽  
Effective Use ◽  
Value Added Products

In recent years, global warming and resource exhaustion problems require the manufacturers to minimize substances of environmental concern and industrial wastes and adopt measures for expedited recycling. As a result, making effective use of wastes to try for further energy conservation and high quality products is an important assignment in the heat treatment and surface hardening treatment fields as well. This study has investigated the effectiveness of waste melamine resin in solid nitriding of JIS SUS304 austenitic stainless steel plate. After heating the stainless plate in waste melamine resin fragments and cooling in air, the surface was analyzed. It was found that a nitrided layer had formed on the surface of the plate, and the nitriding potential of waste melamine was shown to be high. It is therefore likely that this method can be effectively applied to the development of economically advantageous high-performance materials and value-added products.

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