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Budhi Oktavia
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Jurnal Periodic Jurusan Kimia UNP
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 343 Documents
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Isolasi, Uji Fitokimia Dan Aktivitas Antibakteri Jamur Endofit Bunga Sambiloto (Andrographis Paniculata) Rani Aulia Suhanah; Suryelita Thaher; Melindra Mulia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116134

Abstract

Endophytic fungi are microorganisms that live in plant tissues without harming the host plant. One of the plants that have potential as a host for endophytic fungi is the flower of the bitter plant (Andrographis paniculata) which contains secondary metabolites and has biological activity. The purpose of this study was to obtain fungal isolates and identify the content of secondary metabolites and antibacterial activity. The results of the isolation of endophytic fungi produced isolates of endophytic fungi with isolate code BS. Microscopic observation of BS isolates belonging to Chrysosporium spp. The results of the phytochemical test of the ethyl acetate extract were positive for terpenoid compounds marked with a pink color and the FTIR spectrum containing a dimethyl gem group. BS extract also could inhibit the growth of all test bacteria, namely E. coli and S. aureus at concentrations of 1%, 3%, and 5%.
Analisis Proksimat Karbon Aktif Kulit Langsat Annisa Nabila Rahma; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116189

Abstract

Activated carbon is made from various raw materials, one of which is langsat leather. One of the uses of langsat peel activated carbon is as an adsorbent. The langsat peel activated carbon is made by carbonization process at 400 °C in a furnace. Activated carbon that has been carbonized will be activated with 0.1 M HNO3 for 2 hours. Proximate analysis which includes water content, ash content, volatile matter content, bonding carbon content and iodine uptake. Overall, the proximate analysis of activated carbon from langsat peel has a value that meets the requirements of SNI No. 06-3730-1995. Keywords — langsat peels, activated carbon, activation
Pengaruh Pengadukan Pada Degradasi Methylene Blue Menggunakan Katalis ZnO Terdoping Cu Nafika Nurullita; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115089

Abstract

Methylene blue is one of the heterocyclic synthetic dyes used intextile industry, but has a negative impact on water quality and the surrounding environment. This study aims to degrade methylene blue using the photocatalytic method. The catalyst used for degradation is nano ZnO doped Cu 10%. In this study, the degradation process applies sunlight using a hexagonal mobile reactor and The light intesity is a measured using a lightmeter. The degradation process was carried out with variation of stirring at 1500 rpm and without stirring at 1,2,3, and 4 hours. The degradastion results were measured using UV-Vis spectrophotometry to see adsorption before and after degradation. Results of this study obtained the degradation using stirring has a highter percentage of degradation than without stirring. The percentage maximum of degradation obtained in study was  64,4% with a stirring speed of 1500 rpm for 4 hours irradiation. In this study showed the effect of stirring on methylene blue degradation using a hexagonal mobile reactor.
Identifikasi Senyawa Metabolit Sekunder Pada Jantung Pisang Kapas (Musa x paradisiaca L.) Yogi Fernanda Saputra; Sri Benti Etika; Melindra Mulia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114981

Abstract

Musa x paradisiaca L. or cotton banana is a plant that belongs to the Musaceae family. Almost all parts of this plant can be consumed, one of which is the banana blossom. Banana blossom can be cooked as a vegetable and is useful in treating diabetes. In this study, phytochemical screening was carried out to determine secondary metabolites contained in Musa x paradisiaca L. The results of phytochemical screening showed that Musa x paradisiaca L. contained secondary metabolites of flavonoids, terpenoids, phenolics and saponins, but did not contain alkaloids and steroids.
Preparasi Poli Tanin Untuk Meningkatkan Efisiensi Dye-Sensitized Solar Cell (DSSC) Annisa Ade Putri; Hardeli Hardeli; Fajriah Azra; Minda Azhar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114985

Abstract

DSSC (Dye-Sensitized Solar Cell) is a type of third-generation solar cell based on dye as a photon absorber that has been widely used. In this study, modifications were made to tannin dyes to increase double bonds. Modifications were also carried out on the semiconductor by means of TiO2-CuO doping. TiO2-CuO doping can reduce the energy gap thereby increasing the TiO2 conductivity. The dyes were characterized using FTIR and GC-MS, while the TiO2-CuO doping was characterized using a UV-DRS Spectrophotometer. The results of FTIR characterization of poly tannin dyes have shown specific groups of polymerization of polytannin glutaraldehyde resin. The characterization of TiO2-CuO doping showed a decrease in the energy gap of 3,2 eV to 3,01 eV. The highest efficiency was produced at 90 minutes polymer time with a tannin monomer concentration of 0,4 M of 8,332%.
Ekstraksi Alumina (Al2O3) dari Mineral Tanah Napa Pesisir Selatan Arinda Frissherly; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115955

Abstract

Alumina has a wide range of industrial and technical applications and can be extracted from different locations, materials and methods. Napa soil from the South Coast has been used as a raw material for alumina production. This alumina extraction process is the result of modifications to several methods including alkali fusion and hydrothermal methods.Napa soil is calcined at 7500C for 4 hours and washed with hydrochloric acid 1,5 M; 2 M; 2.5 M at 950C, followed by alkali fusion by NaOH 10 M so that it is obtained Al(OH)3 and converted to Al2O3 with the calcination of 11000C. The extraction results are characterized by XRF technology to understand the content of the analyzed sample. The extraction mass of alumina with different concentrations of HCl 1 M; 1,5 M; 2 m; 2.5 M is continuous 14,171 g; 41,127 g; 31,711 g; and 0 g. The result of XRF analysis of alumina extraction showed that the Al2O3 content increased by 68.42%.
Screening Fitokimia Awal (Analisis Qualitative) Pada Daun Gambir (Uncaria Gambir Roxb) Asal Siguntur Muda Melati Melati; Hesty Parbuntari
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114575

Abstract

Gambir (Uncaria gambir Roxb) belongs to family Rubiaceae and genus Uncaria. The content of chemical compounds in plants is called phytochemicals. Plants can be a source of chemical compounds that can be used as medicine.More than 80% of gambier production in Indonesia comes from the province of West Sumatra ,one of them in Siguntur Muda.Therefore, secondary metabolites in Gambir Leaves  have the potential to be further investigated as a source of bioactive compounds. The phytochemical screening of Gambir leaves is a preminilary qualitative test that needs to be done to maximise its function as a medicinal plant. Based on the result data of phytochemical screening show that Gambir contain secondary metabolite compounds of alkaloids, flavonoid, terpenoid and saponins, but do not contained steroid compound
Pengaruh Kecepatan Pengadukan dan Waktu Kontak Terhadap Penyerapan Fenol Menggunakan Adsorben C-SinamalKaliks[4]Resorsinarena Hasil Sintesis Limbah Minyak Kayu Manis (Cinnamomum burmanii) Dewi Kristina; Sri Benti Etika; Edi Nasra; Budhi Oktavia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115255

Abstract

Several industries produce liquid waste that pollutes the environment. The industrial waste produced usually contains phenol. Phenol is included in hazardous waste so that its presence in the environment needs to be considered. To overcome this environmental problem, the adsorption method can be applied using synthesized compounds such as C-CinnamalCalix[4]Resorcinarene (CCCR). CCCR is a derivative of Calix[4]Resorcinarene which can act as a host for cations, anions, and neutral molecules because it has a unique shape that has an active group, which can form hydrogen bonding with phenol solution. the purpose of this study was to determine the optimum conditions with variation in stirring speeds of 50, 100, 150, 200, and 250 rpm and contact times of 45, 60, 75, 105, and 150 minutes. phenol was analyzed using a UV-Vis spectrophotometer (Specord 210). adsorption phenol with CCCR obtained optimum conditions at stirring speeds of 200 rpm with an adsorption capacity of 2.016 mg/g and contact times of 60 minutes with an adsorption capacity of 2.079 mg/g.
Uji Fitokimia Ekstrak Metanol Bunga Tumbuhan Bunga Pagoda (Clerodendrum paniculatum L.) Teuku Muhamad Khairudin; Sri Benti Etika; Melindra Mulia
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.114971

Abstract

Research has been carried out on phytochemical screening on the flowers of the pagoda flower plant (Clerodendrum paniculatum L.). This study aims to determine the content of secondary metabolites in the flowers of the pagoda flower plant. The secondary metabolites tested in this study were alkaloid, flavonoid, steroid, triterpenoid, and saponin. The results showed that the flowers of the pagoda flower plant (Clerodendrum paniculatum L.) contained secondary metabolites, namely alkaloid, flavonoid, and saponin.
Pengaruh Penambahan Gum Arab Terhadap Pembuatan Plastik Biodegradable dari Air Kelapa Norma Wahyunita; Ananda Putra; Umar Kalmar Nizar; Fajriah Azra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.116214

Abstract

Plastic is a polymer that we use a lot in everyday life, but it has a bad impact on the environment because it is difficult to degrade in nature. Therefore, a study was carried out to make plastic that is more environmentally friendly, namelyplastic Biodegradable that utilizes bacterial cellulose from Acetobacter xylinum with old coconut water as a medium with the addition of a plasticizer in the form of Polyethylene Glycol (PEG) and the addition of gum arabic additives with variations in the mass of gum arabic, namely 0g , 1g, 3g, 5g and 7g. The bacterial cellulose plastic PEG gum arabic produced was characterized includingwater content, degree ofswelling,testtensile strength, elongation, elasticity, ability biodegradation, functional group analysis (FTIR) and crystallinity test (XRD). The results of testing the water content and degree of swelling on PEG gum arabic bacterial cellulose plastic, obtained plastic with the more mass of gum arabic added, the greater the percentage of water content and degree of swelling. The results of mechanical testing showed an increase in the value of tensile strength and elasticity along with the amount of gum arabic added but the elongation value decreased. In the biodegradation test, it was found that the more gum arabic which was added, the biodegradation ability increased. The analysis of the plastic functional groups showed that there were no new groups formed. Crystallinity analysis showed that the addition of gum arabic can reduce the percentage of crystallinity.

Page 20 of 35 | Total Record : 343

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