A5072259288- Medicinal Plant Research
- Phytochemicals and Antioxidant Activities
- Advanced Chemical Sensor Technologies
- Agricultural and Biological Research
- Natural Products and Applications
- Biosensors and Analytical Detection
- Natural Antidiabetic Agents Studies
- Food and Agricultural Sciences
- Advanced biosensing and bioanalysis techniques
- Tea Polyphenols and Effects
- Essential Oils and Antimicrobial Activity
- Electrochemical sensors and biosensors
- Advanced Biosensing Techniques and Applications
- Phytoestrogen effects and research
- Dye analysis and toxicity
- Probiotics and Fermented Foods
- Forest Ecology and Conservation
- Ethnobotanical and Medicinal Plants Studies
- Medicinal Plants and Neuroprotection
- Coconut Research and Applications
- Analytical Chemistry and Sensors
- Biochemical Analysis and Sensing Techniques
- Ginger and Zingiberaceae research
- Public Health and Nutrition
- Coffee research and impacts
Universitas Jember
2013-2024
Airlangga University
2019-2020
University of Brawijaya
2019
A simple visual ethanol biosensor based on alcohol oxidase (AOX) immobilised onto polyaniline (PANI) film for halal verification of fermented beverage samples is described. This responds to via a colour change from green blue, due the enzymatic reaction that produces acetaldehyde and hydrogen peroxide, when latter oxidizes PANI film. The procedure obtain this consists immobilization AOX by adsorption. For immobilisation, an solution deposited left at room temperature until dried (30 min)....
Paper-based sensors have received increasing attention in the last decade, their use has spread to various application fields, such as clinical diagnostic, food safety, environmental monitoring, etc. Feature inherent on-side detection is suitable be used point-of-care (POC) testing, including avoided sampling, sample preparation, and laborious procedure classical lab, which undoubtedly driving many developments of this lab-on-paper technology. The biomarkers that are related human health...
The stable chromogenic radical 1,1'-diphenyl-2-picrylhydrazyl (DPPH) solution was immobilized on the microwell plate as dry reagent to construct a simple antioxidant sensor. Then, regular flatbed scanner used microplate reader obtain analytical parameters for assay using one-shot optical sensors scanometry technique. Variables affecting acquisition of images were optimized and are obtained from an area sensing zone inside average luminosity captured mean red, green, blue (RGB) value ImageJ®...
Bacterial cellulose (BC) is a natural biomaterial formed by bacteria. It has distinctive properties and enormous utilization in various fields. The present study focused on BC film preparation using Lentilactobacillus parafarraginis coconut water as fermentation medium. This aimed to characterize with variations storage time. was kept for 1 2 days, then fermented 5, 7, 9 days. dry produced the casting method. Besides characterization, films were also analyzed their morphology based Fourier...
Kenitu or star apple (Chrysophyllum cainito L.) is widely used as traditional remedy for inflammation, cancer, and diabetes mellitus. Leaves of four type kenitu were extracted with different solvents, i.e., 96% ethanol, 70% 50% acetonee, acetone, acetone. The extracts have been screened antioxidant activities using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, total phenolic content, flavonoid content. study showed that ethanol exhibited the highest activity. 2 samples while 1 had
Abstract Antioxidants in chemical terms are electron donors and antioxidants biologically compounds that can overcome the negative effects of oxidants body such as damage to vital cells body. The balance between is very important. Antioxidant from natural sources safer than synthetic antioxidants. Soybeans functional food source contains essential amino acids, vitamin e, saponins rich flavonoids, isoflavones anthocyanins. aim this research investigate antioxidant potential ethanolic extract...
Tea (Camellia sinensis L.) is one of the most popular beverages around world. was reported to contain polyphenols, which play a key role in treatment and preventing many diseases such as cardiovascular neurodegenerative diseases. Thus, content polyphenols could be used indicator for quality tea. Here, development low-cost, portable disposable sensor determination green tea described. The based on immobilization sodium metaperiodate (NaIO4) paper test strip. NaIO4 coupled with...
ABSTRACT
 The people of Tengger in Argosari village receive their knowledge traditional medicine from ancestors. This is inherited and subsequently preserved across generations. ethnobotanical medicinal plant study began with the participation observatory method interviewed 28 local Tenggerese who were selected by purposive snowball sampling. Ethnobotanical data analyzed to understand proportion cited plants. analysis was calculated obtain species use-value (SUV), family (FUV), fidelity...
Background: Biocellulose is a natural polymer produced by bacteria with distinct physicochemical properties, although it has chemical composition identical to plant cellulose. Before use, biocellulose was purified treatment increase its properties. Objective: The study aimed evaluate properties using NaOH solution as purification agent. Method: After harvesting, all samples were of 0.25 M (BC0.25), 0.5 (BC0.5), and 1 (BC1) determined for their such mechanical strength, swelling degree, water...
Daun Guazuma ulmifolia telah digunakan secara tradisional untuk antiobesitas. Aktivitas antiobesitas dipengaruhi oleh kandungan senyawa bioaktif. Ekstraksi adalah langkah utama mendapatkan Metode dan pelarut ekstraksi merupakan faktor penting menghasilkan ekstrak dengan jumlah aktif yang tinggi. Penelitian ini bertujuan menentukan kadar fenol flavonoid total dari etanol, rebusan, infusa daun G. serta aktivitas antioksidan antilipase. Folin-Ciocalteu total, sedangkan penentuan dilakukan...
A simple scanometric assay for antioxidant capacity of the herbal extracts has been developed based on dry reagent 2,2-diphenyl-1-picrylhydrazyl (DPPH) immobilized pharmaceutical blister.The deep violet color DPPH solution was regenerated by introducing methanol to each well as sensing zones.The plant extract will proportionally reduce form corresponding yellow adduct, where change captured a flatbed scanner.Then, optical responses toward are presented an averaged value red green blue (RGB)...
Background: Starch of ginger (Zingiber officinale) is potentially developed as a pharmaceutical excipient dosage forms. In Indonesia, there are three varieties ginger, namely Z. officinale var. Roscoe, Amarum, and Rubrum. Objective: To characterise the morphology physicochemical properties starches from varieties. Method: The starch was characterised using light microscope Scanning Electron Microscope (SEM). Physicochemical were determined several methods previous studies. Result: granules...
Methicillin-resistant Staphylococcus aureus (MRSA) is endemic in healthcare settings Indonesia.To evaluate the effect of a bundle preventive measures on transmission and acquisition MRSA surgical ward resource-limited hospital Indonesia.The study consisted pre-intervention (7 months), intervention (2 post-intervention phase (5 months) included screening for among eligible patients, workers (HCWs), environment. In phase, actions was introduced, comprising: hand hygiene educational program,...
This present study aimed to develop a paper-based colorimetric sensor in the form of paper-microzone plates (PµZP), for simple and fast quercetin determination guava leaf extract samples. Here, N-bromosuccinimide (NBS) solution was immobilized on microzone as sensing probe, where can be dropped it red-purplish color adducts which seen by naked eye or captured using flatbed scanner. The intensity quantified against blank used analytical data scanometric assay. showed response time 8 min,...
An optical fiber formaldehyde biosensor based on a modified single sol–gel film consisting of alcohol oxidase (AOX) and chlorophenol red (CPR) was developed. The modification relies addition poly(vinyl alcohol) (PVA) into matrix, in order to increase the function AOX. biosensing element has been placed inside flow-cell for flow system measurements. In presence constant AOX, color change CPR measured term its reflected signal intensity at wavelength 555 nm. This could be related concentration...
Bacterial cellulose is a polysaccharide that possesses chemical structure identical to derived from plants. Due its high purity and distinct physicochemical properties, bacterial extensively used in several industries, e.g., biomedical, food, tissue engineering. The study aimed to evaluate the impact of storage time coconut water inoculum size Lentilactobacillus parafarraginis on properties dried cellulose. In this study, was stored for 1, 2, 3 days. produce 4, 6, 8, 10%. After...
Tengger is one of the tribes in East Java Province, Indonesia practising traditional medicine by using mantras and medicinal plants. A disease with a high incidence rate widely treated plants Indonesia, including Tosari District, Pasuruan Regency, diarrhoea. To conserve medicine, mainly utilization as anti-diarrhoea agents, it necessary to develop database that keeps up technological advances. The study aimed determine for antidiarrheal remedies tribe four villages namely Wonokitri, Tosari,...