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Academic Letters
Published by PT. Gyandharma Global Media
ISSN : -     EISSN : 3090353X     DOI : https://doi.org/10.64781/620743
Core Subject : Religion, Humanities, Science, Education, Agriculture, Art, Social, Engineering,
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Other
Academic Letters is a new experiment in open access academic publishing. We aim to publish short-form articles such as brief reports, case studies, reports of new findings, socio-political critiques, credible scholarly opinions, and ideas omitted from previously published works. Articles published in Academic Letters are no longer than 600-1500 words, excluding references. Academic Letters is published periodically (6 issues per year: January, March, May, July, September, and November).
Arjuna Subject : Umum - Umum
Articles 3 Documents
 1 
Search results for , issue "Vol 1 No 6 (2025)" : 3 Documents clear
Morfologi Ikan Kerapu Sunu (Plectropomus leopardus) sebagai Dasar Pengelolaan dan Konservasi Sumber Daya Perikanan Indra Surya Winata
Academic Letters Vol 1 No 6 (2025)
Publisher : PT. Gyandharma Global Media

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Abstract

Ikan kerapu sunu (Plectropomus leopardus) merupakan salah satu komoditas perikanan bernilai ekonomi tinggi yang tersebar luas di wilayah Indo-Pasifik, termasuk perairan Indonesia. Eksploitasi yang intensif serta degradasi habitat terumbu karang menyebabkan populasi spesies ini mengalami tekanan yang signifikan. Studi morfologi menjadi pendekatan penting dalam memahami karakter biologis, variasi populasi, serta adaptasi ekologis spesies ini. Artikel ini bertujuan untuk mengkaji karakteristik morfologi ikan kerapu sunu berdasarkan kajian pustaka dan sintesis berbagai hasil penelitian terdahulu, serta membahas implikasinya terhadap konservasi dan pengelolaan sumber daya perikanan. Hasil kajian menunjukkan bahwa P. leopardus memiliki ciri morfologi khas berupa tubuh memanjang dan pipih lateral, pola warna merah cerah dengan bintik biru, serta variasi ukuran tubuh yang dipengaruhi oleh faktor lingkungan dan tekanan eksploitasi. Variasi morfometrik antar wilayah menunjukkan adanya adaptasi ekologis dan potensi diferensiasi populasi. Temuan ini menegaskan pentingnya pendekatan berbasis morfologi sebagai dasar pengelolaan berkelanjutan dan pengembangan budidaya ikan kerapu sunu di Indonesia.
Peanut: Relationship, Arginine, and Cardiovascular Health Sutrisno Adi Prayitno; Andalusia Trisna Salsabila; Devi Kartika Sari
Academic Letters Vol 1 No 6 (2025)
Publisher : PT. Gyandharma Global Media

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Abstract

Peanuts (Arachis hypogaea L.) are nutrient-dense legumes that play an important role in global food systems and human health. Beyond serving as an affordable source of energy and plant-based protein, peanuts are increasingly recognized as a functional food due to their rich content of unsaturated fatty acids, dietary fiber, minerals, phytosterols, and polyphenolic compounds associated with reduced cardiovascular disease (CVD) risk. Among these components, arginine—a semi-essential amino acid abundantly present in peanuts—has received considerable attention for its role in nitric oxide (NO) synthesis and vascular health. Arginine-derived NO is a key regulator of endothelial function, blood pressure, and platelet aggregation, and impaired NO bioavailability is closely linked to hypertension and atherosclerosis. Evidence from randomized controlled trials and meta-analyses published between 2020 and 2024 indicates that regular peanut consumption is associated with improvements in lipid profiles, inflammatory markers, and overall cardiometabolic health, particularly in individuals with metabolic disorders. The cardioprotective effects of peanuts are mediated through synergistic interactions between arginine, unsaturated fats, phytosterols, dietary fiber, and antioxidant compounds. Collectively, these findings support the inclusion of peanuts in balanced dietary patterns aimed at cardiovascular disease prevention.
Penemuan Ikan Coelacanth di Indonesia Makhluk Purba yang Masih Hidup di Laut Nusantara Rima Oktavia Kusuma; Muh. Sulaiman Dadiono; Pratiwi Restu Murti
Academic Letters Vol 1 No 6 (2025)
Publisher : PT. Gyandharma Global Media

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Abstract

Ikan coelacanth dikenal sebagai salah satu makhluk laut paling misterius di dunia karena selama puluhan juta tahun dianggap telah punah. Namun, penemuan ikan ini dalam keadaan hidup di perairan Indonesia mengejutkan dunia ilmu pengetahuan. Artikel esai ini membahas latar belakang penemuan coelacanth di Indonesia, mengenalkan ciri-ciri utamanya, serta menjelaskan mengapa temuan ini sangat penting bagi ilmu pengetahuan dan upaya pelestarian laut. Pembahasan menunjukkan bahwa coelacanth Indonesia merupakan spesies berbeda dari coelacanth Afrika dan hidup di laut dalam yang relatif masih alami. Penemuan ini membuktikan bahwa laut Indonesia menyimpan kekayaan hayati luar biasa sekaligus menuntut perhatian serius dalam perlindungan ekosistem laut dalam.

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