Article Per Year (5 Year)
p-Index From 2020 - 2025
1.908
P-Index
This Author published in this journals
All Journal AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian REACTOR : Journal of Research On Chemistry And Engineering JURNAL KIMIA SAINTEK DAN PENDIDIKAN Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri Jurnal Pengabdian Cendikia Nusantara
Riani, Pevi
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

 1   2 
PENGARUH PENAMBAHAN NATRIUM HIPOKLORIT (NaOCl) TERHADAP MIKROBA PADA AIR LIMBAH DENGAN METODE MEMBRANE FILTER Riani, Pevi; Hidayana, Hijratul
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 20, No 2 (2023): VOL 20 NO 2 DESEMBER 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/sainti.v20i2.238

Abstract

This research was conducted to determine the effect of adding sodium hypochlorite (NaOCl) on the number of E. coli and Total Coliform bacterial colonies in industrial wastewater using membrane filters. The prepared wastewater is added with NaOCl with concentration variations 0 ; 0.5 ; 1 ; 1.5 ; 2 ; 3 ; 4 ; 5 ppm. The vacuum pump and filter membrane are placed in laminar air flow and the filtration process is carried out. The filtered membrane paper was placed into a petri dish containing CCA agar media and incubated for 24-48 hours at a temperature of 35oC with the petri dish upside down. Reddish pink colonies indicate colonies of Coliform bacteria, while dark blue or violet colonies are colonies of Escherichia coli bacteria. The results showed that the number of E. coli bacteria at NaOCl concentrations of 0 ppm to 5 ppm was 0 cfu/100 mL and Total Coliform was obtained at NaOCl concentrations of 0 ; 0,5 ; 1 ; 1,5 ; 2 ; 3 ; 4 dan 5 ppm is cannot be Calculated, 96 ; 74 ; 53 ; 31 ; 19 ; 3 and 0 cfu/100 mL.
PRODUCTION OF CELLULOSE ACETATE MEMBRANE FROM COCOA (THEOBROMA CACAO L) SHELL MODIFIED POLYETHYLENE GLICOL FOR PB METAL ION FILTRATION Riani, Pevi; Syafrinal; Ikhlas Armin, Muhammad
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 6 No. 2 (2022): Jurnal Kimia Saintek dan Pendidikan
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v6i2.3521

Abstract

In this study, a modified polyethylene glycol modified cellulose acetate membrane was made. Cellulose acetate was synthesized from cocoa husk waste (Theobroma cacao L) with several steps, namely isolation of alpha cellulose from cocoa husk waste, synthesis of cellulose acetate from alpha cellulose, preparation of 10% cellulose acetate membrane with the addition of polyethylene glycol 0, 5, 10, 15, 20 & 25% . From the results of the research, it was found that the FT-IR analysis of -cellulose from cocoa shells showed an absorption peak at wave numbers between 3400 – 3500 cm-1 which indicated the presence of O-H stretch groups. At wave numbers 2800-2900 cm-1 indicates C-H stretching, then it can be seen at wave numbers 1160 cm-1 indicates C-O-C stretching, and at 1035-1060 cm-1 indicates C-O stretching. In the fingerprint area, we found absorption peaks at wave numbers around 1300 cm-1 which indicated the presence of C-H bending and around 1400 cm-1 indicating the presence of CH2 bending. The cellulose acetate obtained is white and smooth compared to alpha cellulose. At the membrane preparation stage, the results of the insoluble cellulose acetate & PEG using acetone as a solvent. So it is necessary to do a solubility test and find a suitable solvent to form polyethylene glycol modified cellulose acetate membrane for Pb metal ion filtration.
PENENTUAN DISOLUSI PADA OBAT SENYAWA KETOPROFEN SECARA SPEKTROFOTOMETRI Futeri, Renny; Riani, Pevi
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3868

Abstract

Research on dissolution determination of Ketoprofen compounds by Spectrophotometry. Ketoprofen is a non-steroidal anti-inflammatory drug compound (NSAID) that works as an anti-inflammatory. Anti-inflammatory here is a group of drugs used to reduce inflammation and relieve pain. The dissolution test is a method used to determine the content of active compounds that dissolve in drugs, where the time, temperature and media are set according to the human stomach and intestines, and can find out how much the content of active compounds dissolves in the human intestines and stomach. This dissolution test, then the ketoprofen drug is read by spectrophotometry. Test the dissolution by spectrophotometer at a wavelength of 260 nm using HCl 0.1 N and buffer pH 7.4. The results of the determination of the dissolution test of the active substance on ketoprofen at the acid stage obtained an average of 0.009% and at the pH 7.4 buffer stage obtained an average content of 86.4155%. It can be concluded that the determination of the ketoprofen dissolution test in the sample meets the requirements (MS), in accordance with the specifications of the Internal Standard of PT Novell Pharmaceutical Laboratories, namely at the acid stage not more than 10% of ketoprofen dissolved in 2 hours, and at the pH 7.4 buffer stage it has a requirement of 75%. ketoprofen dissolved in 45 minutes. In the dissolution of acidic media, 0.1 N HCl is used because its condition resembles that of the stomach.
PENENTUAN JENIS MEDIA TERHADAP EFEKTIVITAS PERTUMBUHAN JAMUR TRICHODERMA HARZIANUM Riani, Pevi; Futeri, Renny
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3909

Abstract

This study aims to determine a suitable medium for the growth Trichoderma harzianum. The treatments tested were rice media (M1), bran media (M2), corn media (M3), potato media (M4), and rice husk mixed media (M5). The parameters observed in this study were the quality test of conidia density using a microscope and haemacytometer, macroscopic observation of the media for 7 days and microscopic observation of the media to evaluate the media that had the best effectiveness as a medium for propagation of Trichoderma harzianum. The initial isolate of Trichoderma harzianum used had a conidia density of 2,9x109conidia/ml. The results showed that the propagation of Trichoderma harzianum in various media affected the macroscopic, microscopic and conidia density changes of Trichoderma harzianum. Trichoderma harzianum can grow on all treatment media. The bran media is the medium with the highest conidia density compared to other media.
Pelatihan Pembuatan Temulawak Serbuk Instan di Daerah Lubuk Minturun Kecamatan Koto Tangah Kota Padang Futeri, Renny; Syafrinal, Syafrinal; Riani, Pevi; Armin, Muhammad Ikhlas; Dewati Samah, Selfa; Putri, Melysa; Anwar, Hazil
Journal of Industrial Community Empowerment Vol 1, No 1 (2022): Published in April 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.89 KB) | DOI: 10.52759/jice.v1i1.91

Abstract

Curcuma can be used to maintain and improve body health as well as treat disease. Instant powdered curcuma drink is one of the curcuma plant's processed products.People in the Lubuk Minturun Koto Tangah District, Padang City have natural and human resources that can be utilized through training programs for creating instant powdered curcuma. This exercise drew a total of 25 women, including housewives and teenagers. There are three steps to this community service activity: lectures, demonstrations, and practice. Because the production method is simple and the tools and materials required are readily available, more than 90% of the participants in this activity were able to comprehend the process of making instant powdered curcuma. It is intended that by participating in this activity, the community would be able to increase entrepreneurial prospects and so boost the economy.
Pembuatan Cokelat Batang Melalui Proses Fermentasi dari Biji Buah Kakao Syafrinal; Riani, Pevi; Futeri, Renny; Armin, M. Ikhlas; Samah, Selfa Dewati; Hafnimardiyanti; Putri , Melysa
Jurnal Pengabdian Cendikia Nusantara Vol 1 No 2 (2023): Jurnal Pengabdian Cendikia Nusantara
Publisher : Lembaga Riset Cendekia, Yayasan Berkah Putera Indonesia

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

Abstract

Telah dilakukan kegiatan Pengabdian Kepada Masyarakat (PKM) di Sirambang, Cubadak Air Utara, Kota Pariaman, Provinsi Sumatra Barat dengan judul "Pembuatan Cokelat Batang Melalui Proses Fermentasi dari Biji Buah Kakao." Mitra kegiatan ini adalah kelompok usaha petani Kakao, melibatkan 20 peserta petani dan 7 instruktur dari Politeknik ATI Padang. Saat ini, petani di daerah tersebut masih terbatas dalam mengembangkan hasil pertanian buah kakao menjadi produk pangan. Mereka cenderung hanya menjual biji buah kakao kering kepada agen pengumpul hasil bumi. Oleh karena itu, diperlukan pelatihan untuk mengajarkan cara mengolah biji buah kakao menjadi produk pangan berupa cokelat batang yang memiliki daya tarik tinggi di pasar konsumen, sehingga dapat meningkatkan perekonomian masyarakat. Proses pembuatan cokelat batang melalui fermentasi biji buah kakao dimulai dengan memasukkan biji kakao ke dalam alat fermentor dan mengfermentasinya selama 7 hari. Hasil fermentasi kemudian dijemur di bawah sinar matahari hingga kering, lalu biji kakao disangrai dalam kuali hingga benar-benar kering. Biji kakao yang telah bersih dimasukkan ke dalam blender dan dicampur dengan minyak goreng, susu, dan gula dalam perbandingan 1:1:1:1. Adonan di-blender hingga halus, membentuk pasta cokelat, yang kemudian dicetak dalam cetakan cokelat dan dibekukan dalam freezer. Cokelat batang yang telah terbentuk dikemas menggunakan aluminium foil dan dibungkus dengan kemasan cokelat. Kegiatan PKM dilaksanakan dengan baik dan lancar, diharapkan memberikan wawasan kepada mitra mengenai proses pembuatan cokelat batang melalui fermentasi biji buah kakao. Semoga hasil ini dapat digunakan untuk memenuhi kebutuhan sehari-hari serta menjadi sumber penghasilan tambahan bagi masyarakat.
Produksi Lilin Aromaterapi dari Minyak Jelantah Riani, Pevi; Syafrinal; Futeri, Renny; Armin, M. Ikhlas; Samah, Selfa Dewati; Hafnimardiyanti; Putri , Melysa
Jurnal Pengabdian Cendikia Nusantara Vol 2 No 2 (2024): Jurnal Pengabdian Cendikia Nusantara
Publisher : Lembaga Riset Cendekia, Yayasan Berkah Putera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70104/pcn.v2i2.101

Abstract

Telah dilaksanakan kegiatan Program Kemitraan Masyarakat (PKM) di Usaha Ladu Arai Pinang Bunda Kampung Perak Kota Pariaman, Provinsi Sumatra Barat dengan judul “Teknologi Tepat Guna Produksi Lilin Aromaterapi dari Minyak Jelantah”. Mitra kegiatan ini adalah pengusaha Ladu Arai Pinang Bunda Kota Pariaman dengan jumlah peserta 20 orang dan 07 orang instruktur dari Politeknik ATI Padang. Pengabdian dalam bentuk Program Kemitraan Masyarakat (PKM) merupakan program telah diimplementasikan pada pengusaha Ladu Arai Pinang Bunda yang telah mempunyai izin usaha P-IRT 2061377010159 – 26. Ladu Arai Pinang Bunda merupakan salah satu toko oleh-oleh yang cukup dikenal di Kota Pariaman. Ladu Arai Bunda memproduksi ladu arai pinang sebanyak 50 kg setiap minggu dan belum termasuk produksi panganan lainnya seperti rakik kacang, rakik maco, keripik balado dan lain-lain. Berdasarkan produksi tersebut, maka pengusaha tersebut juga menghasilkan hasil samping penggorengan berupa minyak jelantah sebanyak 5 liter dalam sebulan. Proses pembuatan lilin aromaterapi dari minyak jelantah terdiri atas beberapa tahapan yaitu proses penghilangan bumbu, proses netralisasi, proses penjernihan, dan tahapan akhir yaitu pembuatan lilin aromaterapi. Oleh karena itu, Tim PKM memberikan penyuluhan pembuatan lilin aromaterapi dengan memanfaatkan minyak sisa penggorengan produksi. Kegiatan PKM terlaksana dengan baik dan lancar serta sesuai dengan hasil yang diharapkan. Kegiatan ini diharapkan dapat memberikan wawasan, ilmu dan masukan kepada pihak mitra mengenai proses pembuatan lilin aromaterapi dari minyak jelantah sehingga dapat digunakan untuk keperluan sehari-hari dan bahkan dapat dijual oleh pengusaha tersebut.
THE EFFECT OF THE AMOUNT OF SODIUM METOXIDE CATALYST AND HEATING TIME ON THE QUALITY OF SHORTENING PRODUCTS IN THE INTERESTERIFICATION PROCESS Syafrinal; Riani, Pevi; Putri, Melysa; Futeri, Renny; Armin, M. Ikhlas; Gusfiyesi; Susanti, Arisa
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 9 No. 2 (2025): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v9i2.6168

Abstract

Shortening is a solid plastic fat product that is widely used as a raw material in the production of food products such as biscuits, cakes, bread, and pastries. PT X produces shortening from the interesterification reaction of Refined, Bleached and Deodorized Palm Oil. (RBDPO). In the shortening production process using the interesterification method, it will be influenced by the amount of catalyst added and the heating time. The objective of this research is to analyze the effect of the amount of sodium methoxide catalyst and heating time on the interesterification process of RBDPO on the quality of shortening products. By considering the parameters of Solid Fat Content (SFC) and Slip Melting Point (SMP), an optimal method can be developed to improve the quality and stability of the shortening product. The variations of sodium methoxide catalyst used are concentrations of 0.050%; 0.100%; 0.125%; 0.25%; 0.375%; 0.500%, while the variations in heating time are 50 minutes, 40 minutes, and 30 minutes. The results of the research conducted show that the interesterification process of RBDPO into a shortening product with very good quality is achieved by using sodium methoxide catalyst with a concentration of 0.250% and a heating time of 40 minutes, in accordance with the standards set by PT X for Solid Fat Content (SFC) and Slip Melting Point. (SMP).
Pelatihan Pembuatan Temulawak Serbuk Instan di Daerah Lubuk Minturun Kecamatan Koto Tangah Kota Padang Futeri, Renny; Syafrinal, Syafrinal; Riani, Pevi; Armin, M. Ikhlas; Samah, Selfa Dewati; Putri, Melysa; Anwar, Hazil
Journal of Industrial Community Empowerment Vol. 1 No. 1 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v1i1.91

Abstract

Curcuma can be used to maintain and improve body health as well as treat disease. Instant powdered curcuma drink is one of the curcuma plant's processed products. People in the Lubuk Minturun Koto Tangah District, Padang City have natural and human resources that can be utilized through training programs for creating instant powdered curcuma. This exercise drew a total of 25 women, including housewives and teenagers. There are three steps to this community service activity: lectures, demonstrations, and practice. Because the production method is simple and the tools and materials required are readily available, more than 90% of the participants in this activity were able to comprehend the process of making instant powdered curcuma. It is intended that by participating in this activity, the community would be able to increase entrepreneurial prospects and so boost the economy.
Teknologi Tepat Guna Produksi Sabun Batang Dari Minyak Jelantah di Padang Pariaman Riani, Pevi; Putri, Melysa; Futeri, Renny; Armin, M. Ikhlas; Samah, Selfa Dewati; Syafrinal, Syafrinal; Hafnimardiyanti, Hafnimardiyanti
Journal of Industrial Community Empowerment Vol. 1 No. 2 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v1i2.143

Abstract

Ramuak cracker is one of the main product of Toboh Mandailing, Balai Baru, VII Koto Sungai Sariak, Padang Pariaman, West Sumatera. One of the obstacles faced by the cracker industry players is the amount of used cooking oil produced. Used cooking oil is leftover frying oil that has been repeatedly used. If it continues to be consumed, it will be harmful to health. If discharged into the environment, it will cause environmental pollution. Therefore, the Community Partnership Program Team of the Politeknik ATI Padang provided counseling about the dangers of used cooking oil and efforts to process used cooking oil into something useful, namely producing bar soap with used cooking oil as its raw material. The step of making bar soap from used cooking oil is to slowly dissolve the NaOH solution into 500 grams of used cooking oil, then stir using a stainless steel stirrer until evenly distributed and there are no more lumps. The next step is to add dyes and fragrances and stir again to form a soap mixture. Do the printing of the soap dough in the mold by coating it with parchment paper. Let stand for 24-48 hours until the saponification process is complete. PKM activities carried out well and smoothly and in accordance with the expected results. Each participant was able to make bar soap from used cooking oil very well. This activity is expected to provide insight, knowledge and input to partners regarding the process of making bar soap from used cooking oil so that it can be used for daily needs and can even be sold as an additional source of income for the community.
Co-Authors Armin, M. Ikhlas Armin, Muhammad Ikhlas Dewati Samah, Selfa Fannin, Ulvie Ameinda Gusfiyesi Hafnimardiyanti Hafnimardiyanti Hafnimardiyanti Hazil Anwar, Hazil Hidayana, Hijratul Ikhlas Armin, Muhammad Putri , Melysa Putri, Melysa Renny Futeri Selfa Dewati Samah Susanti, Arisa Syafrinal Syafrinal, Syafrinal