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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 4 Documents
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Search results for , issue "Vol 5, No 2 (2016)" : 4 Documents clear
ANALISIS FORMALIN DALAM SAMPEL IKAN TONGKOL MENGGUNAKAN FLUORAL-P SEBAGAI PENGOMPLEKS SECARA SPEKTROFOTOMETRI UV-VIS Juli Manda Sari; Indang Dewata; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 5, No 2 (2016)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (902.608 KB) | DOI: 10.24036/p.v5i2.108525

Abstract

Had been observed the research on the analysis of formaldehyde in samples of mackarel tuna using fluoral-p as complexing UV-Vis spectrophotometry. This study aims to obtain optimum conditions and validation of analytical methods and analyze the levels of formaldehyde in the mackarel tuna using fluoral-p as a complexing agent. The method used in this research that UV-Vis spectrophotometry, where formaldehyde is reacted with fluoral-p form compounds 3,5-diacetyl-1,4-dihidrolutidin (DDL) yellow and measured at a wavelength of 412 nm using a UV-Vis spectrophotometer. Phase optimization done of the effect of pH, complexing time and stability of the complex. While the validation phase methods of analysis undertaken include the manufacture calibration curve and linearity, LOD and LOQ, precision test and test accuracy. The results showed that the complex solution of formalin and fluoral-p optimum at pH 4 with a complexing for 75 minutes. Validation of the methods result in the regression equation Y = 0.022x + 0.013 with a correlation coefficient (r) = 0.0989, LOD value of 0.2 ppm and 0.6 ppm LOQ values, and average% recovery was 101.7%. Formaldehyde levels were obtained in samples mackarel tuna originating from the Pasar Lubuk Buaya and SPAR Supermarkets identified containing formaldehyde levels exceed a safe threshold is 6 ppm and 20 ppm.
PREPARASI DAN KARAKTERISASI KOMPOSIT SELULOSA BAKTERIAL – RUMPUT LAUT (Eucheuma cottonii) UNTUK APLIKASI BIOMEDIS Febbi Rahmayuni; Edi Nasra; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 5, No 2 (2016)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (920.974 KB) | DOI: 10.24036/p.v5i2.108526

Abstract

Composite bacterial cellulose - seaweed (BC-SW) was prepared by immersing the bacterial cellulose (BC) in seaweed extract (SW) for 1,2,3, and 4 days. Has researched the effect of immersion time on the physical and mechanical properties of the composite, the result showed that longer of immersion time decreases the water content, the higher the compressive strength, tensile strength and elasticity BC-SW composite. From the research done, the content of BC reached 99 156% while for BC-SW composite decreased water content of up to 98 585%. In the compressive strength test, the compressive strength of BC is 0292 MPa, while the BC-SW composite the compressive strength increased 2 times to 8 times stronger than BC. The value of physical and mechanical properties have not been suitable with the standards for the manufacture of cartilage. Analysis of the structure of KSB-RL was observed using FTIR and XRD. Results of FTIR spectra showed no new functional groups but only experienced a slight shift in the vibrational wave numbers.
IDENTIFIKASI MOLEKULER GEN 16S rRNA ISOLAT BAKTERI PENDEGRADASI INULIN DARI RIZOSFER UMBI DAHLIA Destriana Destriana; Minda Azhar; Budhi Oktavia
Jurnal Periodic Jurusan Kimia UNP Vol 5, No 2 (2016)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (752.337 KB) | DOI: 10.24036/p.v5i2.108527

Abstract

Gen 16S rRNA dapat digunakan untuk identifikasi spesies bakteri secara molekuler. Pada penelitian telah dilakukan identifikasi molekuler gen 16S rRNA isolat bakteri pendegradasi inulin dari rizosfer umbi Dahlia yang diberi kode RZ-01. Penelitian ini bertujuan untuk menentukan spesies isolat bakteri RZ-01. Isolasi DNA kromosom bakteri dilakukan sesuai metode yang dimuat pada Wizard Genomic Purification Kit by Promega. DNA kromosom isolat bakteri RZ-01 diidentifikasi dengan elektroforesis DNA. Gen 16S rRNA diamplifikasi dengan metoda Polymerase Chain Reaction (PCR) menggunakan primer BactF1 dan UniB1. Amplikon produk PCR adalah gen 16S rRNA isolat bakteri RZ-01, kemudian ditentukan urutan basa nukleotidanya berdasarkan metoda dideoxcy-Sanger menggunakan primer UniB1. Urutan basa nukleotida gen 16S rRNAisolat bakteri RZ-01dibaca menggunakan progam DNASTAR dan dianalisis menggunakan program BLASTn, Clustal Omega dan Mega 6. Ukuran fragmen gen 16S rRNAisolat bakteri RZ-01 yang diperoleh 724 bp.Konsentrasi DNA kromosom isolat bakteri RZ-01 diperkirakan 50 ng/µL. Hasil identifikasi menunjukkan isolat bakteri RZ-01 termasuk kedalam kelompok spesies Enterobacteraerogenes.
PREPARASI DAN KARAKTERISASI KOMPOSITSELULOSA BAKTERIAL-EKSTRAK DAUN KACA PIRING(Gardenia augusta) UNTUK APLIKASI BIOMEDIS Silvia Dewi Sartika; Ananda Putra; Ali Amran
Jurnal Periodic Jurusan Kimia UNP Vol 5, No 2 (2016)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1176.172 KB) | DOI: 10.24036/p.v5i2.108528

Abstract

Bacterial Cellulose (BC) was fermented coconut water with the aid of Bacteria Acetobacter xylinum. The generated BC became composite by adding a natural ingredient of Ectract of Gardenia augusta Leaves (EGAL). Gardenia augusta leaves was an annual shrub of the coffee genus or rubiaceae. Gardenia augusta leaves contain of chemicals such as flavonoids, saponins, tanins, galat and steroid or terpenoids. This research aimedat determining the effect of immersion time of Bacterial Cellulose in EGAL within 1,2,3 and 4 days onphysical properties (water content), mechanical properties (Compressive Strength using Toni technik Compressive Test Bauform Model 2020 and Tensile Strength using Buchel B.V Horizontal Tensile Tester model No. K465,item 84-58-00-0002 range 500N, 230V-50Hz), and Structural (Functional Groups using FTIR and Crystalinity using XRD) against Composite Bacterial Cellulose-Ectract of Gardenia augusta Leaves (CBC-EGAL) produced. The results showed the water content test,compressive strength test and the tensile strength test of CBC-EGAL are still belowed the minimum standard of articular cartilage. It was caused by least EDKP that goes into the matrix (SB).EGAL also could increase modulus young of BC. The result of XRD spectra and FTIR difractogram  showed that BC and CBC-EGAL wasbelonging to cellulose type-I.

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