Article Per Year (5 Year)
p-Index From 2019 - 2024
1.152
P-Index
This Author published in this journals
All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) JURNAL GIZI INDONESIA Prosiding Seminar Nasional MIPA Natural B Majalah Obat Tradisional Jurnal Media Sains Acta Chimica Asiana Seminar Ilmiah Nasional Teknologi, Sains, dan Sosial Humaniora (SINTESA) Jurnal aplikasi IPTEK
I Made Wisnu Adhi Putra
University Of Dhyana Pura
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Public Health Social Sciences

Published : 17 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 17 Documents
Search

 1   2 
PENGARUH RASIO MOLAR MINYAK JELANTAH DENGAN METANOL DAN SUHU REAKSI DALAM REAKSI TRANSESTERFKASI TERKATALIS CaO/ZEOLIT ALAM TERHADAP YIELD BIODIESEL Ana Malia; Putu Suarya; Ida Ayu Raka Astiti Asih; I Made Wisnu Adhi Putra
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 1 Januari 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.262 KB) | DOI: 10.24843/JCHEM.2016.v10.i01.p07

Abstract

The research of transesterification reaction catalyzed by CaO/natural zeolite has been carried out. This work was aimed to obtain the high yield of biodiesel. The supporting process of CaO on natural zeolite (CaO/ZAA) was done by using wet impregnation method and characterization of CaO/ZAA was performed using XRD, FTIR and the determination of specific surface area of natural zeolite as CaO supporter was performed by BET method. This research aims to study the influence of transesterification reaction which was executed by varying molar ratio of oil to methanol and reaction temperature. Analysis of functional groups and minerals using FTIR and XRD, respectively, showed no significant changes before and after the impregnation of CaO on natural zeolites. CaO supported on natural zeolite was undetected by FTIR. Instead, it was detected by the vibration of carbonate groups as the result of the CO2 absorption by CaO and the result of surface area analysis using BET method showed that the greater the size of natural zeolite, the smaller the specific surface area of catalyst. The result analysis using BET method showed that the spesific surface area of 200 mesh sized natural zeolite as CaO supporter was 9.993 m2/g. The simple gravimetric test revealed that  the amount of CaO supported on 200 mesh sized natural zeolite was 0.2155 g/g. It was concluded that CaO/ZAA 200 mesh was the most suitable catalyst which was then used in the production of biodiesel. The transesterification result showed that the highest biodiesel yield of 98.34% was gained at molar ratio of oil to methanol of 1:15 and at the temperature of 60 oC. The GC-MS analysis indicated that the main components of the biodiesel were methyl palmitate and methyl oleate.
In Vitro ACE Inhibitory Activity and Bioactive Compounds of Aqueous Extract of Citrus amblycarpa I Gusti Ayu Wita Kusumawati; I Made Wisnu Adhi Putra; Ida Bagus Agung Yogeswara
Majalah Obat Tradisional Vol 26, No 2 (2021)
Publisher : Faculty of Pharmacy, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/mot.65028

Abstract

Citrus amblycarpa contain flavonoid-rich compounds and play important role in suppressing the conversion of angiotensin-converting enzyme 1 (ACE 1) to angiotensin-enzyme 2 (ACE 2). This study aimed to determine the bioactive compounds in the lime peel extract and their ability as in vitro ACE inhibitor activity. The lime peel extract was obtained by boiling the dried peel and dried leaves for 7 min at 70oC. The bioactive compound of the peel and the leaves were compared. The total phenolic, quercetin, rutin, and GABA were further quantified using spectrophotometer UV vis. The aqueous extract of C. ambylcarpa peel showed a high concentration of phenolic, quercetin, rutin, and GABA than that of the leaves extract. Furthermore, the peel extract at low concentration (0.0001 g/mL) has high efficiency in inhibiting ACE activity up to 133%. It can be concluded that the peel of C. amblycarpa is a good candidate for the management of hypertension.
PEMBUATAN CONCRETE ZEOLIT-LEMPUNG UNTUK PERVAPORASI CAMPURAN ETANOL/AIR TANPA PEMANASAN I Made Wisnu Adhi Putra; Yateman Arryanto; Indriana Kartini
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACTPreparation of zeolite-clay concrete for new ethanol/water pervaporation without heating has been carried out. Concrete was made by mixing natural zeolite, portland cement, natural clay and distilled water in porcelain disk. The mixture was manually stirred until homogenous suspension obtained. The suspension formed was then placed in the mold and allowed to dry in open air for 48 hours. The mass of natural zeolite was varied from 10, 12.5, 15, 17.5, and 20 g meanwhile the mass of natural clay was varied from 0, 1.25, 2.5, 3.75, and 5 g. The mass of portland cement was fixed in the value of 10 g. The concrete was characterized by infrared spectrophotometer (IR) and X-ray diffraction (XRD). Material testing machine was used to determine the compressive strength of the concrete agreeable with decided ASTM C349-08 standard.Based on preparation of zeolite-clay concrete, it was found that the increase of the natural zeolite mass from 15 to 20 g caused fracture to the concrete, but water adsorption percentage increased from 27.7% to 35.2%. Meanwhile, the higher the mass of natural clay, the greater the compressive strength of concrete from 130.3 MPa to 179.9 MPa and water adsorption percentage from 28.9% to 32.3%. The adsorption-desorption data showed that the water was faster to adsorb into the concrete than ethanol, whereas the desorption rate of concrete with respect to ethanol was greater than that to water. The difference on desorption rate was then used to separate ethanol/water mixture through pervaporation without heating. Pervaporation test using the concretes resulted in the increase of ethanol feed concentration from 60%, 70%, 80%, and 90% to 82.9%, 82.5%, 87.8%, and 93.7% respectively.Keywords: concrete, compressive strength, adsorption-desorption, ethanol/water mixture, pervaporation.
Antioxidant Capacity and α-Amilase Inhibition by Avocado (Persea americana Mill) Peel and Red Ginger (Zingiber officinale var. Rubrum) based Functional Drink I Made Wisnu Adhi Putra; Ketut Ayu Sukesi; Ni Putu Eny Sulistyadewi
Acta Chimica Asiana Vol. 3 No. 1 (2020)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.24 KB) | DOI: 10.29303/aca.v3i1.22

Abstract

Avocado peel (Persea americana Mill) and red ginger (Zingiber officinale var. Rubrum) proved to have antidiabetic properties. However, there has been no research on the analysis of antidiabetic activity of the combination of avocado peel and red ginger in functional beverages. This study aims to make functional beverages from the combination of avocado peel and red ginger. Total phenolic content, antioxidant capacity, inhibition of the α-amylase activity, and public preferences towards functional beverages (organoleptic) were then evaluated. Functional beverages were made by brewing the powdered avocado peel and red ginger with 200 ml of hot water (96oC) for 5 minutes. The results showed that the increase of avocado peels amount in the combination coukd increase total phenolic content. The high antioxidant capacity was also found in samples with high content of avoccado peels. The results of inhibition of α-amylase enzyme activity did not show any significant differences. Organoleptic test results showed that there were no significant differences in each sample. The combination of avocado peel and red ginger has the potential to be an antidiabetic functional beverage.
Physical Characteristics, Total Phenolic, and Flavonoid Content of Coccinia grandis (L.) Voigt Leaves Extract I Made Wisnu Adhi Putra; I Gusti Ayu Wita Kusumawati; Ni Luh Utari Sumadewi
Acta Chimica Asiana Vol. 4 No. 2 (2021)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v4i2.66

Abstract

Coccinia grandis (L.) Voigt is an herbal plant that has been widely used for the treatment of various types of diseases. The phenolic and flavonoid content of plant extracts largely determine their pharmacological activity. The aim of this study was to determine the total phenolic and flavonoid contents of the ethanol extract of C. grandis leaves. Leaf samples in this study were obtained in the area of ​​Dalung, North Kuta, Badung, Bali. The powdered C. grandis leaf was extracted by maceration method using 70% ethanol followed by evaporation using an oven at 45oC to obtain a thick extract. The non-specific parameters of the extract were then determined, such as moisture content, ash content, and acid insoluble ash. Total phenolic content was determined using the follin-ciocalteu method and total flavonoid content was determined using the aluminum chloride method. Based on the research results, the yield of C. grandis leaf extract was 19.36%. C. grandis leaf extract has a description of a thick and sticky extract, blackish brown color, distinctive aroma, and a bitter sour taste. The water content of the ethanolic extract of C. grandis leaves was 9.93±0.03% (g/g). The total ash value of the simplicia and ethanolic extract of C. grandis leaves were 20.76±0.15% (g/g) and 27.38±0.19% (g/g), respectively. The acid insoluble ash content of the extract was 4.05±0.30% (g/g). The total phenolic and total flavonoid contents of the extract were 111.92±0.49 µg GAE/mg dry extract and 73.60±3.53 µg QE/mg dry extract, respectively.
IDENTIFIKASI KOMPONEN FLAVONOID EKSTRAK KULIT LIMAU Citrus amblycarpa (HASSK) OCHSE MENGGUNAKAN THIN LAYER CHROMATOGRAPHY I Gusti Ayu Wita Kusumawati; I Made Wisnu Adhi Putra; Ida Bagus Agung Yogeswara
Seminar Ilmiah Nasional Teknologi, Sains, dan Sosial Humaniora (SINTESA) Vol 3 (2020): PROSIDING SINTESA
Publisher : LPPM Universitas Dhyana Pura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (808.555 KB)

Abstract

ABSTRAKKandungan flavonoid yang terkandung pada varietas jeruk dapat berfungsi sebagai antioksidan yang mampu melindungi tubuh dari stress oksidatif yang menyebabkan terjadinya penyakit. Penelitian ini bertujuan untuk mengidentifikasi komponen flavonoid yang terkandung pada ekstrak kulit limau. Kulit limau yang telah dikeringkan, diekstraksi dengan perebusan dalam 100 ml air selama 7 menit. Identifikasi komponen flavonoid pada ekstrak kulit limau dilakukan dengan menggunakan Thin Layer Chromatography (TLC). Hasil penelitian menunjukkan bahwa ekstrak kulit limau mengandung kuersetin dan rutin yang merupakan golongan flavonoid. Ekstrak kulit limau berpotensi digunakan sebagai sumber antioksidan alami.Kata kunci: ekstrak kulit limau, flavonoid, thin Layer Chromatography
Peningkatan dan Pengembangan Produksi Usaha Kerajinan Kayu Berbasis Teknologi Tepat Guna di Desa Petulu Kecataman Ubud Gianyar Made Agung Raharja; I Made Wisnu Adhi Putra; Ni Putu Dyah Krismawintari
Paradharma (Jurnal Aplikasi IPTEK) Vol. 1 No. 1 (2017): Jurnal Paradharma
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Dhyana Pura – Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (617.051 KB) | DOI: 10.36002/jpd.v1i1.212

Abstract

ABSTRAKKecamatan Ubud memiliki perusahaan perorangan atau yang tergolong UMKM yang paling banyak diantara daerah lainya. Dalam penerapan Ipteks Bagi Masyarakat (IbM) ini terdapat 2 (dua) mitra yang didampingi berlokasi di Desa Petulu, Kecamatan Ubud, Kabupaten Gianyar, Provinsi Bali. Jenis UMKM yang dimiliki kedua mitra tersebut adalah UMKM Kerajinan Kayu. Dengan metode ini luaran yang diharapkan dari mitra adalah: 1) Peningkatan keterapilan pemasaran UMKM dalam hal penggunaan teknologi informasi berbasis internet dengan menggunakan aplikasi online e-commers. 2) Peningkatan kemampuan manajemen usaha UMKM dan dalam hal pengelolaan keuangan serta pengelolaan aset UMKM. 3) Kemampuan pengolahan limbah kayu menjadi barang bernilai jual. 4) Pengembangan usaha UMKM ke arah usaha ekonomi produktif yang berbasis teknologi informasi untuk menjaga keberlanjutan pendapatan dan diversifikasi usaha. Hasil dari kegiatan IbM ini adalah : (1) Instalasi dan pendampingan pengunaan website pemasaran (e-commerce) dengan nama website untuk mitra yaitu www.gemuhartshop.com dan www.ganggaartshop.com dapat berjalan dengan baik. (2) Pelaksanaan kegiatan pelatihan manajemen UMKM telah memberikan wawasan pengetahuan dan keterampilan kepada para pemilik UMKM. (3) Pemilik UMKM telah mampu menerapkan pembukuan sederhana dengan mengunakan tools Microsoft Office dan (4) Pelatihan pengolahan libah kayu sisa hasil produksi kerajinan kayu berhasil diterapkan menjadi briket.Kata kunci : UMKM, e-commers, Desa Petulu dan Teknologi InformasiABSTRACTUbud subdistrict has many small and medium enterprises (SMEs) belonging to individuals, particularly locals. In program of application of science and technology to the community there are two partners mentored by a team from Universitas Dhyana Pura, located in the village of Petulu, district of Ubud, Gianyar, Bali Province. The type SMEs owned by both partners operate in wood carvings. The expected outcomes of partners are: 1) Increasing the marketing skills of SMEs in terms of the use of information technology by using the internet based e-commerce online applications, 2) Improved business management capabilities of SMEs and in terms of financial management and asset management of SMEs, 3) The ability of wood-waste into marketable goods, 4) Development of SME towards productive economic activities are based on information technology to maintain the sustainability of earnings and diversification. The results of this IbM activities were: (1) The installation and use of website marketing assistance (e-commerce) with the name of the website's partners are www.gemuhartshop.com and www.ganggaartshop.com, (2) The implementation of SME management training has provided insight into the knowledge and skills to the owners of SMEs, (3) The owners of SMEs have been able to apply a simple accounting by using Microsoft office tools, and (4) Training of processing waste from wood production successfully applied into briquettes.Key words : SMEs, e-commers, Desa Petulu and Information Technology
Co-Authors Adiari, Ni Wayan Lisa Ana Malia Ate, Olyn Tien Atikawati, Atikawati I Gede Mustika I Gede Widhiantara I Gusti Ayu Wita Kusumawati I Nengah Simpen I. A. R. Astiti Asih Ida Bagus Agung Yogeswara Indriana Kartini Indriana Kartini Ketut Ayu Sukesi Krismawintari, N.P.D. Made Agung Raharja NI KADEK YUNITA SARI Ni Luh Utari Sumadewi Ni Putu Eny Sulistyadewi Ni Wayan Nursini Putu Suarya Sitanggang, Katrin Walensky Yateman Arryanto Yateman Arryanto