scholarly journals Biosurfactants and Their Biodegradability: A Review and Examination

Author(s):  
Shrey Patel ◽  
◽  
Kaashvi Kharawala ◽  

Surfactants are extensively employed in industrial, agricultural, and food, cosmetics and pharmaceuticals applications. Chemically produced surfactants cause environmental and toxicological hazards. Recently, considerable research has led to environmentally friendly procedures for the synthesis of several forms of biosurfactants from microorganisms. In comparison to chemical surfactants, biosurfactants have several advantages, such as biodegradability, low toxicity and ease of availability of raw materials. This paper offers an in-depth review of the types of surfactants, the need for bio-surfactants, their types and advantages, especially biodegradability. It also examines the biodegradability of selected four surfactants and finds that the biosurfactant is more easily biodegradable than the chemical surfactants.

2020 ◽  
Author(s):  
Purwo Subekti

This researchs aims to to find out about the potential of palm oil as a raw material of foam firefighting peat fires in Indonesia.By using the method of literature approach to previous researchers, can be in the know that the vegetable raw materials with thepotential to be developed in Indonesia as a raw material of foam extinguishing peat fires is palm oil. In addition to theavailability of environmentally friendly palm oil is also guaranteed and sustained since 2015, Indonesia produced palm oil andits derivatives amounted to 32.5 million tons, to meet the domestic demand of 18.77% while exports amounted to 81.23%..Utilization of palm oil as a raw material foam fire extinguisher is one form of support to the Indonesian government in order toincrease the downstream and value-added palm oil products as well as reduce the level of risk of peat fires


Synlett ◽  
2022 ◽  
Author(s):  
Zihua Yu ◽  
Xue Tang ◽  
Chenxi Huang ◽  
Yehan Shang ◽  
Yu-Jin Li ◽  
...  

The copper-catalyzed three-component one-pot 1,3-dipole cycloaddition/oxidation has been developed to construct Pyrrolo[2,1-a]isoquinolinoquinone derivatives with environmentally friendly oxygen as the oxidant. The products Pyrrolo[2,1-a]isoquinolinoquinones were obtained from the naturally available raw materials tetrahydroisoquinoline, 1,4-naphthoquinone and benzaldehyde with medium yields.


2021 ◽  
Vol 0 (15) ◽  
pp. 0-0
Author(s):  
Hatice ÖĞÜTCÜ

With the increase in the world population every year, the need for plant and animal foods has increased. In order to meet these needs, the amount of fertilizers (with chemical content) used to increase productivity in agriculture has increased and has become a threat to the soil and the environment. In order to minimize the harms of chemical fertilizers and to preserve the fertility of the soil, new environmentally friendly applications have been researched. In this context, studies on "Plant Probiotics", which are one of the effective applications both in protecting the quality of the soil and increasing the yield in plant production, especially on local isolates and formulations to be prepared from them, have gained momentum. Plant probiotics are a group of microorganisms or microorganisms that can improve soil health, plant growth, and plant tolerance or immunity to various abiotic and biotic stresses, thanks to their potential role in enhanced nutrient acquisition and/or biocontrol activities by colonizing the root zone of plants, called the rhizosphere. As a result of inoculation of plants with strains of these bacteria, which have very different properties (nitrogen binding, phosphate solubilizing, biocontrol agent, stress resistance, phytohormone synthesis), it directly affects the growth and development of the roots and shoots of the plant, increasing the biomass, as well as contributing to the increase of the yield and quality of the product. In this context, the preparation and use of biofertilizer formulations of local plant probiotic bacteria, which will be obtained from their natural areas, has become very important in rational agricultural practices in recent years and intensive researches are carried out. With the use of the aforementioned plant probiotic formulations, environmentally friendly green production will be made by contributing to the production of both foodstuffs and feed raw materials in order to ensure the continuity of the world population. As a result, the protection of the ecosystem will be ensured by preventing environmental pollution, which is the problem of the whole world.


2017 ◽  
Vol 36 (2) ◽  
pp. 67
Author(s):  
Elmi Kamsiati ◽  
Heny Herawati ◽  
Endang Yuli Purwani

<p>Plastic is a packaging materials that are widely used but has an adverse impact on the environment because it is difficult to degrade in nature. Production technology of biodegradable plastics from natural resources that have characteristic environmentally friendly has developed. Starch-based biodegradable plastic is a widely developed type because the production process is simple and the raw materials more readily available. The starch of cassava and sago has potential as a raw material of biodegradable plastic because of the availability and its characteristic. Also, to make starch as the main ingredient, plasticizers and structural strengthening materials are required to produce biodegradable plastic with excellent characteristics. The production stages of biodegradable plastics include mixing, heating, and casting. The starch-based biodegradable plastic that can apply to an environmentally friendly packaging material has an excellent opportunity developed in Indonesia.</p><p>Keywords: Starch, sago, cassava, biodegradable plastics, production technology</p><p> </p><p><strong>Abstrak</strong></p><p>Plastik merupakan bahan pengemas yang banyak digunakan namun berdampak buruk bagi lingkungan karena sulit terdegradasi di alam. Teknologi produksi plastik biodegradable atau bioplastik yang dibuat dari bahan alami dan ramah lingkungan sudah mulai dikembangkan. Plastik biodegradable berbahan dasar pati relatif lebih mudah diproduksi dan bahan baku mudah diperoleh. Pati ubi kayu dan sagu memiliki potensi sebagai bahan baku plastik biodegradable ditinjau dari ketersediaan dan karakteristiknya. Selain pati sebagai bahan utama, diperlukan pula plastisizer atau bahan pemlastis dan bahan penguat struktur untuk menghasilkan plastik biodegradable dengan karakteristik yang baik. Tahapan produksinya meliputi pencampuran, pemanasan, dan pencetakan. Plastik biodegradable berbahan dasar pati dapat digunakan sebagai bahan pengemas yang ramah lingkungan dan berpeluang besar dikembangkan.</p><p>Kata kunci: Pati, sagu, ubi kayu, bioplastik, teknologi produksi</p>


Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5023
Author(s):  
Ge Li ◽  
Menghui Zhao ◽  
Fei Xu ◽  
Bo Yang ◽  
Xiangyu Li ◽  
...  

Over the past few decades, with the development of science and technology, the field of biomedicine has rapidly developed, especially with respect to biomedical materials. Low toxicity and good biocompatibility have always been key targets in the development and application of biomedical materials. As a degradable and environmentally friendly polymer, polylactic acid, also known as polylactide, is favored by researchers and has been used as a commercial material in various studies. Lactic acid, as a synthetic raw material of polylactic acid, can only be obtained by sugar fermentation. Good biocompatibility and biodegradability have led it to be approved by the U.S. Food and Drug Administration (FDA) as a biomedical material. Polylactic acid has good physical properties, and its modification can optimize its properties to a certain extent. Polylactic acid blocks and blends play significant roles in drug delivery, implants, and tissue engineering to great effect. This article describes the synthesis of polylactic acid (PLA) and its raw materials, physical properties, degradation, modification, and applications in the field of biomedicine. It aims to contribute to the important knowledge and development of PLA in biomedical applications.


Synlett ◽  
2018 ◽  
Vol 29 (20) ◽  
pp. 2693-2696 ◽  
Author(s):  
Fuhong Xiao ◽  
Guo-Jun Deng ◽  
Shanshan Yuan ◽  
Huawen Huang

An ethylenediamine-promoted three-component synthesis of 3-(thiomethyl)indoles from indoles, thiophenols, and paraformaldehyde has been developed. Water is used as the green solvent in a simple and environmentally friendly procedure. Stable and low-toxicity paraformaldehyde is used as a carbon source.


Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5408
Author(s):  
Yichao Gong ◽  
Jianbing Su ◽  
Muyuan Li ◽  
Aixue Zhu ◽  
Guisui Liu ◽  
...  

A novel magnetic composite material, Fe3O4@SiO2/chitosan/graphene oxide/β-cyclodextrin (MCGC), was prepared by multi-step methods. Various methods were used to systematically characterize the morphology, composition, structure, and magnetic properties of MCGC. The results obtained show that the composite material has good morphology and crystal structure and can be separated quickly by an external magnetic field. The operation is relatively easy, and the raw materials used to prepare this material are economical, easy to obtain, and environmentally friendly. The performance and adsorption mechanism for using this material as an adsorbent to remove bisphenol A (BPA) and bisphenol F (BPF) from water were studied. The adsorption parameters were optimized. Under optimal conditions, MCGC was found to remove more than 90% of BPA and BPF in a mixed solution (20 mg/L, 50 mL); the adsorption process for BPA and BPF on MCGC was found to follow a Redlich–Peterson isotherm model and Pseudo-second-order kinetic model. The adsorption mechanism for MCGC may involve a combination of various forces. Recycling experiments showed that after five uses, MCGC retained a more than 80% removal effect for BPA and BPF, and through real sample verification, MCGC can be used for wastewater treatment. Therefore, MCGC is economical, environmentally friendly, and easy to separate and collect, and has suitable stability and broad application prospects.


Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3727
Author(s):  
M. Isabel Más-López ◽  
Eva M. García del Toro ◽  
Alfredo Luizaga Patiño ◽  
L. Jaime Marco García

The use of glass waste, which by its nature cannot be recycled, might be a viable alternative in the manufacture of cements and concrete that is also economical and environmentally friendly. This alternative can reduce landfill areas with this inert residue but also limit the use of raw materials employed in the manufacture of cement and concrete and, consequently, contribute to minimize the environmental impact generated by this activity. In this research, the feasibility of using a limestone-type material treated with a binder manufactured with micronized glass powder and basic reagents, in the preparation of a gravel–cement- or soil–cement-type material, was analyzed. For this purpose, the strength, compactability, structural capacity, resistance to the action of water, stiffness and durability of the material obtained were characterized. From the tests that were carried out and the results obtained, it can be concluded that the use of glass powder, with a particle size of 16 μm, is ideal for the production of a gravel–cement- or soil–cement-type material. This material could be used as an environmentally-friendly pavement, especially suitable for peri-urban roads and park roads, where it can be used without coating, or as a base layer or sub-base for road surfaces, with little cracking due to shrinkage.


2021 ◽  
Vol 12 (2-2021) ◽  
pp. 120-124
Author(s):  
Yu. G. Kiselev ◽  
◽  
E. S. Shchukina ◽  

Mineral raw materials have a multicomponent composition. The extraction and translation of all or the main components into useful products is an urgent and important task. The integrated use of mineral raw materials is an essential requirement of environmentalists for technology developers. The methods of disposal of hydrochloric acid processing of sphene, developed by the authors, make it possible to carry out the process in an environmentally friendly version with obtaining the demanded main and by-product.


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