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All Journal 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 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.
Co-Authors Fachrudin, Adinandra Caesar Gumelar, Muhammad Dikdik Heri Jodi, Heri Lilla Puji Lestari Nursanto, Eduardus Budi Salsabila, Adinda Atalya Sari, Puspita Ayu Kusuma Sembiring, Rinawati Slamet Priyono Sutrisno Adi Prayitno Utami, Dwi Retnaningtyas