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All Journal Biology, Medicine, & Natural Product Chemistry Jambura Journal of Food Technology JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Jurnal Media Informatika Journal of Tropical Mycorrhiza Paramita: Historical Studies Journal Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Biodiversitas Journal of Biological Diversity
Muhammad Isra
Department Of Food Technology, Faculty Of Agriculture, Universitas Negeri Gorontalo. Jl. Prof. Dr. Ing. B.J Habibie, Bone Bolango 96554, Gorontalo, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Analysis of Cyanide Content and Antioxidant Activity of Teo Tuber (Tacca leontopetaloides (L.) Kuntze) Starch after Soaking in NaCl Solution Pipin Tutuda; Margaretha Solang; Muhammad Isra; Syam S. Kumaji; Novri Youla Kandowangko
Biology, Medicine, & Natural Product Chemistry Vol 15, No 2 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.152.1883-1892

Abstract

Polynesian arrowroot (Tacca leontopetaloides (L.) Kuntze) is a local food source of the Torosiaje community, rich in starch and utilized as a carbohydrate source. The processing of Polynesian arrowroot into starch generally involves soaking using NaCl solution to reduce the toxic cyanide content. Additionally, Polynesian arrowroot may contain antioxidant compounds beneficial to health. However, information regarding the analysis of soaking treatment on cyanide content and antioxidant activity remains limited. This research aims to analyze the cyanide content and antioxidant activity of Polynesian arrowroot starch through soaking in NaCl solution. The research was conducted as a laboratory experiment using a quantitative approach. Cyanide content was analyzed using UV-Vis spectrophotometry, while antioxidant activity was assessed using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. The results showed that the cyanide content in the raw sample was 2.170 mg/kg, while NaCl solution soaking at 15% and 30% concentrations yielded 1.927 mg/kg, respectively. These data indicate a tendency for cyanide content to decrease after three days of NaCl solution soaking. The antioxidant activity was categorized as very strong, as demonstrated by the IC50 values for 15% and 30% NaCl solution soaking at 38.69 ± 0.00 µg/mL and 28.06 ± 0.00 µg/mL, respectively, while the raw sample obtained an IC50 value of 191.76 ± 0.00 µg/mL.
A Grain at the Margins: The History of Sirampog Black Rice, the Green Revolution, and Local Food Security in Central Java Margareta Rahayuningsih; Enni Suwarsi Rahayu; Aditya Marianti; Tsabit Azinar Ahmad; Margaretha Solang; Jusna Ahmad; Muhammad Isra; Sujatha Ramasamy
Paramita: Historical Studies Journal Vol. 36 No. 2 (2026): Agricultural History
Publisher : istory Department, Faculty of Social Sciences, Universitas Negeri Semarang in collaboration with Masyarakat Sejarawan Indonesia (Indonesian Historical Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/paramita.v36i2.14076

Abstract

Abstract: Sirampog black rice (Oryza sativa L.), a pigmented landrace cultivated for generations on the southern slopes of Mount Slamet in Brebes Regency, Central Java, is now grown by only five or six farmers. This study examines its historical decline and what it reveals about local food security. Using library research, colonial archives from the Delpher digital collection, and field data from 40 purposively selected respondents collected between July and October 2025, the study reconstructs the transition from diverse, ritually embedded rice cultivation to the standardized white-rice system established during the Green Revolution. Archival evidence shows that black rice was known, traded, chemically analyzed, and used in rituals across the Indonesian archipelago since at least the 1840s, although colonial authorities consistently treated it as a marginal crop. Because Sirampog was officially registered as a variety only in 2020, these records represent the history of black rice as a broader type rather than the specific landrace. Field findings identify long growing periods, unstable prices, limited market access, and consumer preference for white rice as the main causes of its decline. Nevertheless, its high anthocyanin content, dietary fiber, drought tolerance, and cultural significance demonstrate its value within a food sovereignty perspective, highlighting landrace conservation as a foundation for resilient and diverse local food systems. Abstrak: Beras hitam Sirampog (Oryza sativa L.), varietas lokal berpigmen yang dibudidayakan secara turun-temurun di lereng selatan Gunung Slamet, Kabupaten Brebes, Jawa Tengah, kini hanya ditanam oleh lima atau enam petani. Penelitian ini mengkaji sejarah penyusutannya serta maknanya bagi ketahanan pangan lokal. Penelitian menggunakan studi pustaka, arsip kolonial dari koleksi digital Delpher, dan data lapangan dari 40 responden yang dipilih secara purposif pada Juli–Oktober 2025. Hasil penelitian merekonstruksi perubahan dari budaya padi yang beragam, berakar pada ritual, dan dikelola komunitas menuju sistem beras putih yang terstandar sejak Revolusi Hijau. Bukti arsip menunjukkan bahwa beras hitam telah dikenal, diperdagangkan, dianalisis secara kimiawi, dan digunakan dalam berbagai ritual di Nusantara sejak sedikitnya dekade 1840-an, tetapi tetap diposisikan sebagai komoditas marginal oleh pemerintah kolonial. Karena Sirampog baru terdaftar sebagai varietas pada 2020, arsip tersebut merepresentasikan sejarah beras hitam sebagai tipe yang lebih luas. Temuan lapangan menunjukkan bahwa masa tanam yang panjang, harga yang tidak stabil, keterbatasan akses pasar, dan preferensi terhadap beras putih menjadi penyebab utama penyusutannya. Meskipun demikian, kandungan antosianin, serat pangan, toleransi terhadap kekeringan, dan nilai budayanya menunjukkan pentingnya pelestarian varietas lokal sebagai fondasi sistem pangan yang beragam, tangguh, dan berkelanjutan.
Co-Authors Adelia Salsabila Rahman Aditya Abdullah Aditya Marianti ADITYA MARIANTI Adnan Engelen Agus Bahar Rachman Aisyah Ahmad Ardiyanto Saleh Modjo Asniawati Zainuddin Asniwati Zainuddin Astin Lukum Budy Santosa Devi Bunga Pagalla Djuna Lamondo Eman Rahim Enni Suwarsi Rahayu ENNI SUWARSI RAHAYU Hayatiningsih Gubali Jusna Ahmad Laode Muhamad Irsan Lisna Ahmad MARGARETA RAHAYUNINGSIH Margareta Rahayuningsih Nugroho Edi K Margaretha Solang Muh. Nur Akbar MUHAMMAD NUR AKBAR Novri Youla Kandowangko Nur Hasanah Nur Rahmatiya H Suudi Nurdike Ismail Pipin Tutuda Regina Valentine Aydalina Rival Rahman, Rival Sakinah Ahyani Dahlan Sri Wulandari Sujatha Ramasamy SUJATHA RAMASAMY SYAM S. KUMAJI Syam S. Kumaji Tsabit Azinar Ahmad Vivien Novariana Vrilianika Vrilianika Wahyu Dzunaid Syawal Widya Rahmawaty Saman Wirnangsih D. Uno Yuliana Retnowati Yuniyarti Hulu Zuliyanto Zakaria