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All Journal Jurnal Sumberdaya Hayati Jurnal Pembelajaran dan Biologi Nukleus Konservasi Hayati Bioscientist : Jurnal Ilmiah Biologi PROFICIO: Jurnal Pengabdian Masyarakat Farmers: Journal of Community Services Maximus: Journal of Biological and Life Sciences TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Khazanah Sosial
Mulyana, Jeane Siswitasari
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Quantitative Analysis of Phytochemical Compounds and Antihyperglycemic Potential of Robusta Coffee from West Lampung Khairani, Iffa Afiqa; Mulyana, Jeane Siswitasari; Olivia, Rahel Noviantika; Riana, Elisa Nurma; Anisa, Hida Arliani Nur
Jurnal Sumberdaya Hayati Vol. 10 No. 1 (2024): 2024
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.10.1.1-6

Abstract

West Lampung Regency in Lampung Province produces high quality robusta coffee with a distinct, strong bitter flavour. Bitter flavour indicates the amount of bioactive substances produced by plants called phytochemicals. The aim of this study is to analyse the phytochemical compounds and antihyperglycemic potential of robusta coffee beans from West Lampung, Indonesia. Quantitative phytochemical analysis was carried out using the thin layer chromatography method and spectrophotometry. Animal experimental design using robusta coffee on hyperglycemia conditions in mice which was induced by alloxan 170 mg/kgBW subcutaneously and given by 1 ml of brewed robusta coffee for 10 days. The robusta coffee from West Lampung contained total caffeine 4,014.87 µg/g, total flavonoid content (TFC) 93.6 mg quercetin equivalent per gram of sample, with total alkaloid content (TAC) 0.848 mg of quinine equivalent per gram of sample, total tannin content (TTC) 182.3 mg of tannic acid equivalent per gram of sample, and total saponin content (TSC) 24.2 mg of quillaja bark equivalent per gram of sample. The administration of 1 ml/mice/day of robusta coffee brewed for 10 days did not show a decrease in blood sugar level in hyperglycemic mice, due to the short duration of the study, so the role of coffee in decreasing hyperglycemia conditions has not been optimally observed.
Determinants of Aggression in Non-Urban Sumatra: Age, Handedness, and Regional Context Putri, Isnaini Anggraini; Badriah, Nur; Muktiono, Permesyawari; Mulyana, Jeane Siswitasari; Maretta, Gres; Nurhayu, Winati; Darmawan, Andy
Khazanah Sosial Vol. 8 No. 2 (2026): Khazanah Sosial
Publisher : UIN Sunan Gunung Djati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ks.v8i2.49227

Abstract

This study aims to analyze regional variation in aggressiveness in non-urban areas of Sumatra and to examine the simultaneous influence of demographic, biological, and regional factors on individual aggression levels. This study is important because comparative quantitative research across regions in Indonesia, particularly outside urban contexts, remains limited, even though aggression directly relates to social dynamics and regional violence risks. The study employs a quantitative approach with a cross-sectional design. The researchers collected data from 610 respondents aged 14–87 years in Simalungun Regency (North Sumatra), as well as South Lampung, Way Kanan, and Central Lampung, using convenience sampling. The researchers measured aggressiveness using the Buss–Perry Aggression Questionnaire (BPAQ) and analyzed the data through Kendall’s correlation and multiple linear regression. The findings show a mean aggressiveness score of 2.815 (on a 1–5 scale), with the verbal subscale recording the highest score. The regression model explains 7.6 % of the variance in aggression and identifies four significant predictors: Simalungun region, age (negatively correlated), left-handedness, and Lampung ethnicity. Sex, income, and birth order do not demonstrate significant effects. These findings indicate that aggression is shaped more strongly by developmental factors, biological proxies, and sociocultural and regional dynamics than by economic factors alone. This study implies the importance of regionally and culturally based interventions to strengthen emotional regulation, particularly among young populations in areas with higher aggression scores. In terms of originality, this study represents the first comparative quantitative research that integrates regional, ethnic, and handedness variables within a single regression model in a non-urban Sumatran context, thereby providing empirical and methodological contributions to locally grounded social policy development.
Co-Authors Adhha, Nurul Andriyana, Ahmad Dodi ANDY DARMAWAN Anisa, Hida Arliani Nur Antonius Antonius Badriah, Nur DINA ANGGRAINI Gres Maretta, Gres Iffa Afiqa Khairani Imaniar, Lisana Husna Khaerunissa Anbar Istiadi Luxiana, Eri Maulana, Muhammad Aqil Melinia, Nur Astri Muktiono, Permesyawari Novriadi Novriadi, Novriadi Nur Hidayah Nurcahya, Gebriel Nurhayu, Winati Olivia, Rahel Noviantika Putri, Isnaini Anggraini Riana, Elisa Nurma Sari, Dian Anggria Sari, Mayang Rosi Dwi Sattia, Ana Suryanti, Erma Yanti Ariyanti, Yanti Zahra, Anisa Mumtaz