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All Journal KOVALEN: Jurnal Riset Kimia Causalita: Journal of Psycology
Fito
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Chemical Engineering, Chemistry & Bioengineering Chemistry Physics Other

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Aplikasi Edible Coating Albedo Semangka dengan Penambahan Ekstrak Etanol Daun Bandotan pada Tomat Napu: Application of Edible Coating of Watermelon Albedo with the Addition of Ethanol Extract of Bandotan Leaves on Napu Tomato Lutfi, Mohammad; Wulandari, Asri; Fito; Rahmadina, Hizra Nur; Chaedar, Nur; Nurhaeni; Amar, Aini Auliana
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 3 (2024): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i3.17408

Abstract

One of the causes of food waste is due to the lack of post-harvest handling of fruits or vegetables, therefore, an innovation is needed to overcome this problem, one of which is with edible coating. This study aimed to determine the characteristics of edible coatings from watermelon albedo pectin with the addition of Bandotan leaf extract as an antibacterial against Napu tomatoes. This study used a completely randomized design (CRD) consisting of 4 treatments, namely tomatoes (edible coating), tomatoes (edible coating + 12.5% bandotan leaf ethanol extract), tomatoes (edible coating + 25% bandotan leaf ethanol extract), and tomatoes (edible coating + 50% bandotan leaf ethanol extract). The watermelon albedo pectin characterization test results were the equivalent weight of 558.3 mg, methoxyl content of 6.1%, galacturonic acid content of 32.1%, moisture content of 11.469%, and ash content of 9.378%. From the results of tomato characterization tests for weight loss, moisture content, and microbial tests, the best treatment was produced by tomatoes (edible coating + 50% antibacterial), with consecutive results of 7.90%, 53.18%, 16.6 colonies (10-4 dilution), and 5.6 colonies (10-5 dilution).
Adaptasi dan Properti PsikometrisPublic Speaking Anxiety Scale (PSAS) Fito Janua Putra; Fito; Rinaldi, Rinaldi
CAUSALITA : Journal of Psychology Vol 3 No 2 (2025): CAUSALITA: Journal of Psychology
Publisher : CV. Causalita Dynamic Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62260/causalita.v3i2.523

Abstract

Penelitian ini bertujuan untuk mengadaptasi dan mengidentifikasi properti psikometris Public Speaking Anxiety Scale (PSAS) versi Indonesia. Skala PSAS dikembangkan oleh Bartholomay dan Houlihan (2016) dan terdiri atas 17 item yang mengukur tiga aspek kecemasan berbicara di depan umum, yaitu kognitif, perilaku, dan fisiologis. Penelitian ini melibatkan 600 mahasiswa sebagai partisipan. Proses adaptasi skala dilakukan berdasarkan pedoman dari International Test Commission (ITC) untuk memastikan kesetaraan bahasa dan budaya. Validitas isi dianalisis menggunakan Aiken’s V, dengan koefisien berkisar antara 0,66 hingga 1,00. Hasil menunjukkan bahwa seluruh item dinyatakan valid secara isi. Validitas konstruk diuji melalui dua tahap, yaitu analisis faktor eksploratori (EFA) dan analisis faktor konfirmatori (CFA). Reliabilitas skala dievaluasi menggunakan koefisien Cronbach’s Alpha. EFA menghasilkan tiga faktor yang konsisten dengan struktur teoretis skala, dan CFA menunjukkan bahwa model pengukuran memiliki kecocokan yang baik dengan data (RMSEA = 0,075; CFI = 0,950; TLI = 0,941; SRMR = 0,052). Skala juga menunjukkan konsistensi internal yang tinggi dengan nilai alpha total sebesar 0,872. Berdasarkan hasil tersebut, PSAS versi Indonesia dinyatakan memiliki properti psikometris yang baik dan layak digunakan untuk mengukur kecemasan berbicara di depan umum pada mahasiswa Indonesia.
Co-Authors Aini Auliana Amar Asri Wulandari Chaedar, Nur Fito Janua Putra Mohammad Lutfi Nurhaeni Rahmadina, Hizra Nur Rinaldi Rinaldi