Table of Contents

Volume 2,Issue 4

Open Access Communication

Biocatalyzed Hydrolysis of Residual Oils and Proteins from Flax and Camelina Oilseed Press Cakes Using Lipase and Protease

Received: 14 September 2022;  Published: 17 November 2022;  doi: 10.21926/cr.2204041

Abstract

In this study, a PoC (Proof of Concept) of a possible biomass valorization of flax and camelina oilseed press cakes was presented. Biocatalyzed hydrolysis of residual oils and proteins extracted from these wastes was studied. The biotransformation of oils was performed using commercial immobilized lipases, including Amano PS, Amano AK, and Candida Antarctica Lipase B (CALB). Acylglycerols were partially or fully hydrolyzed using Amano PS and AK. Triglycerides were not hydrolyzed by CALB, which b [...]

Open Access Research Article

Effect of Different Additives on the Structure and Activity of β-Galactosidase Immobilized on a Concanavalin A–Modified Silica-Coated Titanium Dioxide Nanocomposite

Received: 06 August 2022;  Published: 17 November 2022;  doi: 10.21926/cr.2204040

Abstract

Interpreting the relationship between the activity and structure of β-galactosidase is necessary to perceive the impact of the enzyme’s conformation on its catalysis. The current study thoroughly explains the effects of additives such as ethylenediaminetetraacetic acid (EDTA), sodium dodecyl sulfate (SDS), dithiothreitol (DTT), and urea on β-galactosidase activity and structure. β-Galactosidase activity was determined at [...]

Open Access Original Research

Enhanced Photocatalytic Degradation of p-Nitrophenol and Phenol Red Through Synergistic Effects of a CeO2-TiO2 Nanocomposite

Received: 24 July 2022;  Published: 03 November 2022;  doi: 10.21926/cr.2204039

Abstract

Organic compounds are one of the most severe pollutants occurring in the environment. Hence, it is important to remove these compounds from the environment through remediation processes such as photocatalysis. The present study investigated the photocatalytic degradation of p-nitrophenol (NP) and phenol red (PR) using a cerium oxide-titanium oxide nanocomposite (CeO2-TiO2nc) under UV light. CeO2-TiO

Open Access Original Research

Thermokinetic and Thermodynamic Parameters for Catalytic Pyrolysis of Medium Density Fiber over Ni/Beta Zeolite

Received: 31 August 2022;  Published: 02 November 2022;  doi: 10.21926/cr.2204038

Abstract

Catalytic pyrolysis is an attractive alternative for converting biomass into energy and chemicals to replace fossil sources. This has encouraged the search for efficient catalysts that can directly remove oxygenated products during pyrolysis, since they are the main problem in the processing and use of the products obtained. The catalytic and non-catalytic pyrolysis of medium density fiber (MDF) over beta zeolite-supported nickel (3 and 5%) was performed using the biomass/catalyst of 1.0/0.2 rat [...]

Open Access Original Research

The Effect of Oxygen-containing Additives in Feedstock on the Performance of the Catalytic Cracking Process

Received: 28 July 2022;  Published: 26 October 2022;  doi: 10.21926/cr.2204037

Abstract

In this study, we found that adding catalytic cracking feedstock, vacuum gas oil, and naphthenic acids in the amount of 0.005–0.0075% vol. increased the liquid target fractions, i.e., gasoline and light gas oil. The decrease in the yield of hydrocarbon gas at a practically constant degree of conversion of the raw material indicated a small proportion of the reactions of re-cracking of the resulting products. This also indicated the resource-saving nature of the process, allowing a larger amount [...]

Open Access Research Article

Short Hydroacylation-Based Synthesis of Four Aryl-3-hydroxypropanones, Predictable Biomass-Derived C9 Platform Molecules

Received: 22 July 2022;  Published: 26 October 2022;  doi: 10.21926/cr.2204036

Abstract

A two-step protocol for the synthesis of aryl-3-hydroxypropanones, which were regarded as lignin degradation products, was proposed herein. This protocol provided a more rapid and easier access to aryl-3-hydroxypropanones, and aryl-3-hydroxypropanones were expected to be ideal platform molecules for the synthesis of more complex value-added targets.

Open Access Original Research

Effect of ZSM-5 Particle Size and Framework Silica-to-Alumina Ratio on Hexane Aromatization

Received: 13 August 2022;  Published: 17 October 2022;  doi: 10.21926/cr.2204035

Abstract

Parent ZSM-5 and Ga-modified ZSM-5 catalysts with different Si/Al ratios and particle sizes were prepared. The physicochemical properties of the prepared catalysts were investigated by performing X-ray powder diffraction analysis, BET surface area analysis, and NH3-TPD analysis. The performance of the aromatization reaction of the prepared catalysts was evaluated with 1-hexane as a model compound. The zeolite catalysts with a low SiO2/Al2& [...]

Open Access Research Article

Kinetic Modeling of the Esterification of Oleic Acid and Methanol in Conventional and Adsorptive Reaction Systems

Received: 23 August 2022;  Published: 17 October 2022;  doi: 10.21926/cr.2204034

Abstract

Biodiesel is derived from renewable vegetable or animal sources and is either used as a standalone fuel or blended with oil-based diesel. The kinetic mechanism of the esterification of oleic acid was investigated in a conventional batch reactor and a batch reactor coupled to a water adsorption system. The esterification was performed with oleic acid and methanol at different temperatures (70 to 110 °C) and alcohol-to-oleic acid molar ratios (3:1 to 9:1), using sulfuric acid as a catalyst. A kine [...]

Open Access Review

Perovskite Solar Cells: Assessment of the Materials, Efficiency, and Stability

Received: 14 August 2022;  Published: 14 October 2022;  doi: 10.21926/cr.2204033

Abstract

Solar cells based on organic-inorganic lead halide perovskites are popular in the photovoltaic community due to their high efficiency, low cost, and solution processability. Understanding the fundamentals of metal halide perovskite and its interfaces is extremely important for achieving high-quality materials and developing efficient devices using these materials with the necessary properties. Various methodologies have been used to evaluate the excellent optoelectronic properties, efficiency, a [...]

Open Access Original Research

3D Printed Polylactic Acid (PLA) Well Plates for Enzyme Inhibition Studies: The Case of Pancreatic Lipase

Received: 31 July 2022;  Published: 08 October 2022;  doi: 10.21926/cr.2203032

Abstract

3D printed PLA has already been demonstrated for several biotechnological applications, including enzymes immobilization. The prerequisites for an efficient screening assay include using small volumes of reagents, low cost, and rapid screening of large numbers of compounds and extracts. Hence, assays based on microtiter plates are predominant. Thus, designing and fabricating scaffolds on a similar scale, which could serve as immobilization carriers, and their recruitment in inhibitors screening [...]

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