Cholesterol detection needs to be carried out detect early symptoms of dangerous diseases such as heart disease. The process detecting cholesterol in the human blood requires a sensitive tool order produce accurate values. This paper reports performance chitosan thin films modified with reduced graphene oxide (rGO) and manganese dioxide (MnO2) layer working electrodes cholesterol. electrode substrate is copper-screen printed (copper-SPE) which was patterned into 5 mm area. chitosan-reduced...

Bacterial cellulose (BC) is a biopolymer commonly used for wound dressing due to its high biocompatible properties either in-vitro or in-vivo. The three-dimensional fiber structure of BC becomes an advantage because it provides template the impregnation materials in order improve BC’s as dressing, since has not displayed any bioactivity properties. In this study, micro-colloidal Zanthoxylum acanthopodium (MZA) fruit was loaded into fibers via in-situ method. Z. known have anti-inflammatory,...

This paper reports the ability of chitosan-reduced graphene oxide (rGO) modified electrode as a sensitive layer working in detecting formaldehyde. The substrate is form copper-SPE which has been shaped into 5 mm area. On top electrode, number chitosan and matrices were placed thin film that works electrode. Characterization films was done using SEM, TEM, AFM FTIR. test for electrochemical sensing observed cyclic voltammetry (CV), whereas chitosan-rGO deposited onto surface electrodes....

In this study, all-cellulose composite film which was fabricated by utilizing the cellulose extracted from empty brunch of palm oil has been successfully conducted. The initially prepared performing chemical technique treatments involving alkaline to remove ligno-cellulosic contents. To obtain nano-scale materials, mechanical experiments were performed using homogenizer instruments, so nanofiber could be obtained in addition fabricate film. Next, fiber partially dissolved 8% LiCl/DMAc and it...

Abstract The success of ceramic membranes as solute separation and filtration makes membrane technology widely used because it has high effectiveness efficiency a separator filtration. performances typical depend on the porosity properties itself. Membrane indicates number porous areas in membrane. Precipitated silica filler was added into at 0.30 %, 1.01 1.68 2.34 2.99 % per hundred masses It revealed that acting increased This confirmed with SEM (Scanning Electron Microscopy) test Origin...

Sensing materials are crucial in a wide range of fields, including environmental monitoring, healthcare, security, and industrial applications. By leveraging their specific properties, sensing enable the development innovative devices systems for improved detection, control various parameters our environment. This study aimed to prepare chitosan/reduced graphene oxide film as using simple casting method. The reduced (rGO) was mixed with chitosan (CS), consisting concentration ratio 200, 250,...

Transesterification is the reaction to produce methyl esters in which this reaction’s involves catalyst of blood clam shell ashes combustion at temperatures 900 ° C for 3 hours and amount ash that used by 8%, 10%, 12% (w / w). Ash dissolved methanol with a molar ratio methanol: oil 9: 1, 12: 1 (n n) obtain compound calcium methoxide. Used cooking filtered then esterified 3.0% w) H2SO4 98% TG (6: 1) reduce FFA <1%. carried out temperature 65 hours, keep stirring 700 rpm. Quantitatively,...

Ammonia (NH3) is a toxic gas from various sources, including industrial waste, agriculture, and other human activities. The high concentration can cause negative impacts on air, water, soil quality harm health ecosystems. objective of this research was to detect ammonia based chitosan-CS/titanium dioxide-TiO2 film. CS solution supplemented with TiO2 in quantities ranging 0.01 g 0.05 g, increments g. formed films were characterized using FTIR SEM, the sensing characteristic CS/TiO2 film-based...

Abstract In this study, the working electrode (WE) from Screen-Printed Copper modified with chitosan/rGO to detect epinephrine has been successfully performed by using electrodeposition method. Samples are conducted varying rGO concentration (300, 350, 400, 450, and 500) ppm chitosan 1:1 (v/v). The obtained electrodes were tested for FTIR determine functional group, surface area of WE, characterized SEM, amperometry method output voltage optimum. analysis confirmed N-H, OH, C-H, NH 2 , C-H...

Abstract Water pollution is currently an increasingly widespread environmental problem. Methylene blue a synthetic dye used in the textile industry which pollutes aquatic environment. The absorption of Blue environment uses silica precipitate as filler ceramic membranes with clay matrix. Silica added to membrane varies concentration 0.3 %, 1.01 1.68 2.34 % and 2.99 %. will be characterized using Fourier Transform Infrared (FTIR) testing determine functional groups components it contains....

This research implemented a green route to multifunctional nanocomposite materials composed by cellulose nanofiber (CNF) and graphene oxide (GO). Aqueous solutions with different ratio of GO (prepared LiCl/DMAc 8%(w/v)) were mixed using magnetic stirrer at the temper

The cationic surfactant of N, N-(2-Lauric-Ethyl) Stearamidium Chloride had been successfully synthesized. It is long-chain alkyl derivative from ammonium salt with amide. Cationic surfactants that are synthesized fatty acid derivatives stearic and lauric acid. Stearic used as stearamide-making material which the product methyl stearate amidation diethanolamine use methoxide sodium catalyst. Lauric was esterification stearamide thus obtaining Stearamide alcanolamide ester. Alcanolamide ester...

Orange is one of the local fruits, which a source income for farmers in Narigunung 1 Village, Tiganderket District, Karo Regency. However, recent years, many orange orchards have been attacked by fruit fly pest Bactrocera sp. (Diptera: Tephritidae), causing oranges become rotten and fall. This resulted losses farmers; there are crop failures some orchards, while had to pay off large pesticide purchase. One effective ways ward arrival these flies using ultrasonic waves. Based on research,...