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Optimization of Producing Zein Clove Leaf Essential Oil Nanoparticles for Their Antioxidant Activities Refilda, Refilda; Ramadani, Mutia; Nasution, Ainun; Imelda, Imelda; Yefrida, Yefrida; Batubara, Irmanida
Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) Vol. 5 No. 01 (2024)
Publisher : Lembaga Penelitian dan Pengabdian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijans.v5.i01.9-20.2024

Abstract

Essential oils are often also referred to as flying oils produced by plants and usually volatile essential oils at room temperature, one of the essential oils with many uses is clove leaf essential oil (Syzygium aromaticum L). Zein-essential oil nanoparticles were prepared by varying the concentration of clove oil (0, 2, 4, 6, 8, and 20 mg/mL) added to 1.5 mg/mL zein and 1 ml tween 20 and sonicated for 20 minutes. The antioxidant activity of the zein-essential oil nanoparticles formed was tested using the DPPH method. The best antioxidant activity was found in the addition of clove leaf essential oil 8 mg/mL with a percentage of inhibition of 71.13%. Characterization test with a laser beam where the amount of light scattered by the solution. Chemical component analysis using Gas Chromatography Mass Spectrophotometry (GC-MS) showed the presence of 32 compounds with three main compounds, namely trans-?-caryophyllene (46.69%), chavibetol (25.80%) and - humulene (10.84%).
Pengaruh Disiplin Kerja dan Motivasi Kerja terhadap Kinerja Pegawai Pada Badan Keuangan dan Aset Daerah Kabupaten Maros Ramadani, Mutia; Umar, Akmal; Adrianah
WORKFORCE JOURNAL: Manajemen & Bisnis Vol 2 No 1 (2025): Januari 2025
Publisher : Sekolah Tinggi Ilmu Manajemen Indonesia YAPMI

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Abstract

This research aims to find out the influence of work discipline and work motivation on employee performance at the Regional Financial and Asset Agency of Maros Regency. A total of 92 respondents were used as the research population and sample. Data collection techniques in this research include observation, interviews, questionnaires and documentation. The data analysis techniques were validity and reliability testing, normality testing, hypothesis testing, regression testing (T test and F test) with SPSS V 26. The results of this research show ed, partially, the variable of work discipline variables has a positive and significant effect on employee performance. In employee performance, work motivation has a positive and significant effect. Simultaneously work discipline and work motivation has a significant effect on employee performance. The R square value was 0.257 or 25.7%, which means work discipline and work motivation are 25.7% and the remaining 74.3% is influenced by other variables that are not used in this research.