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All Journal B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah Food Science and Technology Journal (Foodscitech) International Journal of Renewable Energy Development
Salsabila, Nadhifah
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Agriculture, Biological Sciences & Forestry Control & Systems Engineering Dentistry Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Evaluation of Phytochemicals And Antioxidant Activity (IC50) of Bintaro Fruit Ethanol Extract (Cerberaodollam L.) Prayitno, Sutrisno Adi; Lestari, Lilla Puji; Utami, Dwi Retnaningtyas; Salsabila, Nadhifah
Food Science and Technology Journal (Foodscitech) Vol 4 No 1 (2021)
Publisher : Universitas Dr Soetomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.718 KB) | DOI: 10.25139/fst.v4i1.3686

Abstract

The phytochemical compounds in bintaro fruit can be used as herbs to maintain health. The compounds that play a role are flavonoids and phenols. These two compounds can be used as a reference for measuring the level of antioxidant activity in natural materials. There is a correlation between total phenols, total flavonoids, and antioxidants (IC50) found in natural ingredients. The purpose of this study was to determine the total phenol content, flavonoids, and antioxidant activity in the ethanol extract of Bintaro fruit. Bintaro fruit was extracted using ethanol solvent by maceration method which was then evaporated with a rotary evaporator on the obtained macerate. The extract obtained was then analyzed for levels of total flavonoids, total phenols, and antioxidants (IC50). Ethanol extract of bintaro fruit in the study produced total phenol content of 73.04 mg GAE/g extract, flavonoids 41.61 mg QE/g extract and had antioxidant activity (IC50=275.06 ppm). Recommended for in vivo or in vitro assay for certain diseases using these extracts.Further research is needed with the use of other solvent to see optimall in the screening of active compounds.
Comparison of lithium sources on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials for lithium-ion batteries Sudaryanto, Sudaryanto; Salsabila, Nadhifah; Sari, Puspita Ayu Kusuma; Fachrudin, Adinandra Caesar; Salsabila, Adinda Atalya; Nursanto, Eduardus Budi; Priyono, Slamet; Jodi, Heri; Gumelar, Muhammad Dikdik
International Journal of Renewable Energy Development Vol 13, No 3 (2024): May 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.59662

Abstract

In order to fulfill the demand for high energy and capacity, an electrode with high-voltage capability, namely LiNi0.5Mn1.5O4 (LNMO) that has an operating potential of up to 4.7 V vs Li/Li+, is currently becoming popular in Li-ion battery chemistries. This research produced LNMO by using a solid-state method with only one-step synthesis route to compare its electrochemical performance with different lithium sources, including hydroxide (LNMO-LiOH), acetate (LNMO-LiAce), and carbonate (LNMO-LiCar) precursors. TGA/DSC was first performed for all three sample precursors to ensure the optimal calcination temperature, while XRD and SEM characterized the physical properties. The electrochemical measurements, including cyclic voltammetry and charge-discharge, were conducted in the half-cell configurations of LNMO//Li-metal using a standard 1 M LiPF6 electrolyte. LNMO-LiOH samples exhibited the highest purity and the smallest particle size, with values of 93.3% and 418 nm, respectively. In contrast, samples with higher impurities, such as LNMO-LiCar, mainly in the form of LixNi1-xO (LiNiO), displayed the largest particle size. The highest working voltage possessed by LNMO-LiOH samples was 4.735 V vs Li/Li+. The results showed that LNMO samples with LiNiO impurities would affect the reaction behavior that occurs at the cathode-electrolyte interface during the release of lithium-ions, resulting in high resistance at the battery operations and decreasing the specific capacity of the LNMO during discharging. The highest value, shown by LNMO-LiOH, was up to 92.75 mAh/g. On the other side, LNMO-LiCar only possessed a specific capacity of 44.57 mAh/g, indicating a significant impact of different lithium sources in the overall performances of LNMO cathode.
MIKROORGANISME PADA SALIVA ANAK NORMAL DAN ANAK AUTISME Salsabila, Nadhifah; Ningrum, Valendriyani; Surya, Leny Sang
B-Dent: Jurnal Kedokteran Gigi Universitas Baiturrahmah Volume 5, Nomor 1, Juni 2018
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (66.778 KB) | DOI: 10.33854/JBDjbd.136

Abstract

Pendahuluan: Autisme merupakan suatu gangguan perkembangan yang mempengaruhi fungsi normal otak, perkembangan interaksi sosial dan kemampuan berkomunikasi. Anak autisme memiliki kepedulian yang rendah terhadao diri sendiri, sensitif terhadap bulu sikat dan pasta gigi, cenderung mengkonsumsi makanan kariogenik, dan memiliki kelainan motorik lidah. Keterbatasan yang dimiliki anak autisme tersebut menyebabkan anak autisme lebih berisiko terhadap penyakit periodontal dan karies gigi. Karies merupakan penyakit jaringan keras gigi akibat aktivitas mikroorganisme dalam suatu karbohidrat yang dapat diragikan dan penyakit periodontal adalah penyakit pada jaringan pendukung gigi yang faktor penyebab utamanya adalah mikroorganisme, kedua penyakit tersebut erat kaitan terjadinya dengan kondisi rongga mulut salah satunya adalah saliva. Tujuan penelitian ini adalah untuk mengetahui perbedaan jenis dan jumlah koloni mikroorganisme pada saliva anak autisme dan anak normal yang mengalami karies. Metode: Penelitian ini menggunakan pendekatan cross sectional, subjek penelitian anak autisme yang berada di SLB Autisma YPPA Kota Padang dan anak normal yang berada di SD N 05 Sawahan Kota Padang. Sampel penelitian berupa saliva dilakukan pembiakkan mikroorganisme pada media agar darah. Data dianalisis menggunakan uji Mann-Whitney. Hasil: Terdapat perbedaan jenis mikroorganisme pada saliva anak normal dan anak autisme. jenisMikroorganisme pada saliva anak autisme yaitu Streptococcus sp, Neisseria sp, Staphylococcus aureus, dan Candida sp, sementara pada saliva anak normal jenis Streptococcus sp dan Neisseria sp. Hasil uji statistik perbedaan jumlah Streptococcus sp didapatkan nilai p=0,001, pada Neisseria sp didapatkan nilai p=0,012. Kesimpulan: Terdapat perbedaan jenis dan jumlah koloni mikroorganisme pada saliva anak normal dan anak autisme.
Co-Authors Eduardus Budi Nursanto Fachrudin, Adinandra Caesar Gumelar, Muhammad Dikdik Heri Jodi, Heri Lilla Puji Lestari Ningrum, Valendriyani Salsabila, Adinda Atalya Sari, Puspita Ayu Kusuma Sembiring, Rinawati Slamet Priyono Surya, Leny Sang Sutrisno Adi Prayitno Utami, Dwi Retnaningtyas