Jurnal Sains Teh dan Kina https://tcrjournal.com/index.php/tcrj Jurnal Sains Teh dan Kina, tea, cinchona commodities, agronomy, plant breeding, soil science, crop protection, postharvest technology, social economy, and related sciences en-US <p>Authors who publish with this journal agree to the following terms:</p> <p>a. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by/3.0/" target="_new">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</p> <p>b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</p> <p>c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (SeeÂ&nbsp;<a href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</p> redaksijptk@gmail.com (Dr. M. Khais Prayoga) redaksijptk@gmail.com (Fani Fauziah) Wed, 10 Jun 2026 11:58:41 +0700 OJS 3.1.2.0 http://blogs.law.harvard.edu/tech/rss 60 Karakterisasi Metabolit Teh dan Tanah dari Berbagai Sumber di India Timur Laut https://tcrjournal.com/index.php/tcrj/article/view/203 <p>Tea harvested in North-Eastern parts of India is renowned for high quality tea including various therapeutic potentials like antioxidant and antimicrobial properties. Tea samples collected from Darjeeling, Assam and Jalpaiguri gardens are subjected for metabolite quality analysis processes. The geographic factors including soil characters can influence the qualities of tea according to their inherent secondary metabolites. One of the major class of tea secondary metabolite is tea flavonoids responsible for tea quality parameters including Rutin, Quercetin, Epigallocatechin gallate, Tannic acid, Gallic acid etc. Spectrophotometric, Spectrofluormetric scan analysis, HPLC, FTIR analysis characterize the differential contents of different tea flavonoids of different origin. The results suggest that tea extracts from Assam, Darjeeling, and Jalpaiguri possess valuable bioactive secondary metabolites to impart antimicrobial and antioxidant activities. The variations in these properties can be attributed to a combination of factors, including soil characteristics and cultivation practices of the different origin of North eastern Indian tea gardens</p> Sudeshna Shyam Choudhury, Debapriya Maitra, Bedaprana Roy, Sejuti Ray, Sony Choubey, Bishista DasGupta, Suman Deb, Ankur Chattopadyay, Biswanath Ganguly, Arup Kumar Mitra Copyright (c) 2026 Sudeshna Shyam Choudhury, Debapriya Maitra, Bedaprana Roy, Sejuti Ray, Sony Choubey, Bishista DasGupta, Suman Deb, Ankur Chattopadyay, Biswanath Ganguly Ardiansyah, Arup Kumar Mitra http://creativecommons.org/licenses/by-nc-sa/4.0 https://tcrjournal.com/index.php/tcrj/article/view/203 Wed, 10 Jun 2026 00:00:00 +0700 Strategi Pemberdayaan Perempuan di Emplasemen Guna Mendukung Kegiatan Ekoeduwisata di Perkebunan Teh Gambung https://tcrjournal.com/index.php/tcrj/article/view/217 <p>Penelitian ini membahas strategi pemberdayaan perempuan dalam mendukung pengembangan ekoeduwisata di Perkebunan Teh Gambung, Kabupaten Bandung. Menggunakan metode kualitatif deskriptif, data dikumpulkan melalui observasi partisipatif dan wawancara mendalam dengan anggota kelompok Kalintem Sabeungkeutan di kawasan emplasemen. Hasil penelitian menunjukkan bahwa strategi pemberdayaan bertumpu pada empat pilar utama: pemanfaatan potensi lokal, partisipasi kolektif, inovasi produk, dan keberlanjutan sosial-ekologis. Potensi lokal diwujudkan melalui pengembangan olahan pangan, kerajinan rajut, batik, serta pemanfaatan pekarangan melalui program Kalintem Mekar SAE. Partisipasi kolektif memperkuat solidaritas melalui mekanisme mentor sebaya, sementara inovasi produk berbasis identitas lokal meningkatkan kebanggaan psikologis sekaligus nilai ekonomi. Dimensi keberlanjutan terwujud dalam pengelolaan pekarangan sebagai ruang hijau dan sumber pangan keluarga. Temuan ini menegaskan bahwa pemberdayaan perempuan tidak hanya menciptakan peluang ekonomi, tetapi juga memperkuat identitas, solidaritas, dan kesadaran ekologis yang menopang pengembangan ekoeduwisata berkelanjutan.</p> <p><strong>Kata Kunci</strong><strong>: </strong>pemberdayaan perempuan; ekoeduwisata; potensi lokal; partisipasi kolektif; keberlanjutan sosial-ekologis</p> Julia Wandani, Kralawi Sita, Erna Herawati Copyright (c) 2026 Julia Wandani, Kralawi Sita, Erna Herawati http://creativecommons.org/licenses/by-nc-sa/4.0 https://tcrjournal.com/index.php/tcrj/article/view/217 Wed, 10 Jun 2026 00:00:00 +0700 Analisis Daya Saing Teh Olahan (HS 210120) Indonesia di Pasar Global https://tcrjournal.com/index.php/tcrj/article/view/225 <p><em><span style="font-weight: 400;">The tea plantation sector contributes the lowest amount of foreign exchange to the country compared to other plantation commodities. Processed tea products (HS 210120) have great potential due to their high added value. However, Indonesia's processed tea exports have fluctuated over the past ten years and are at their lowest level compared to the 15 major exporting countries. This study analyses the market structure, competitiveness, and trade specialisation index of processed tea in the global market using secondary data from 1989 to 2023 from UN Comtrade. The analysis methods include the Herfindahl-Hirschman Index (HHI), Revealed Comparative Advantage (RCA), Export Product Dynamic (EPD), Export Competitiveness Index (ECI), and Trade Specialisation Index. The results show that the processed tea market has an HHI concentration of 154.94 with a monopolistic competitive structure. RCA &lt; 1 indicates low comparative competitiveness, but ECI &gt; 1 indicates strong competitive competitiveness. The processed tea market is highly potential, so a development strategy is needed for Indonesia to compete sustainably in the global tea market</span></em></p> Mayda Rekha Azizah, Kralawi Sita, Sotya Tresna Anggita, Fadil Bagaskara, Arini Wahyu Utami Copyright (c) 2026 Mayda Rekha Azizah, Kralawi Sita, Sotya Tresna Anggita, Fadil Bagaskara, Arini Wahyu Utami http://creativecommons.org/licenses/by-nc-sa/4.0 https://tcrjournal.com/index.php/tcrj/article/view/225 Wed, 10 Jun 2026 00:00:00 +0700 Keanekaragaman Gulma pada Perkebunan Teh Gambung, serta Kaitannya dengan Naungan dan Tahun Pangkas https://tcrjournal.com/index.php/tcrj/article/view/239 <p>Keberadaan gulma pada perkebunan teh merupakan faktor penting yang memengaruhi produktivitas tanaman karena gulma bersaing dalam memperoleh cahaya, air, hara, serta berpotensi menjadi inang hama dan penyakit. Penelitian ini bertujuan mengevaluasi pengaruh kombinasi tahun pangkas dan naungan tanaman teh terhadap komposisi serta keanekaragaman gulma di perkebunan teh Gambung, Pusat Penelitian Teh dan Kina. Penelitian dilaksanakan dengan menggunakan Rancangan Acak Lengkap Faktorial yang melibatkan dua faktor, yaitu kondisi naungan (dengan dan tanpa naungan) dan tahun pangkas (TP4 dan TP5). Data mikroklimat berupa intensitas cahaya, suhu, dan kelembapan diukur, sementara sensus gulma dilakukan dengan metode <em>nested plot </em>pada plot sampel untuk menghitung kerapatan, kerimbunan, frekuensi, dominansi, indeks nilai penting, dan indeks keanekaragaman Shannon-Wiener. Hasil penelitian menunjukkan ditemukan 33 spesies gulma dengan tingkat keanekaragaman sedang. Lahan tanpa naungan memiliki indeks keanekaragaman lebih tinggi dibandingkan dengan lahan bernaungan, dan TP5 cenderung memiliki keanekaragaman lebih tinggi daripada TP4. Spesies dominan yang ditemukan adalah <em>Macrotyloma axillare</em> pada TP4 dan <em>Commelina benghalensis </em>pada TP5. Penelitian ini menyimpulkan bahwa kombinasi naungan dan tahun pangkas berpengaruh terhadap struktur komunitas gulma, sehingga hasilnya dapat menjadi dasar pengelolaan gulma yang adaptif dan berkelanjutan di perkebunan teh.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p> <p><strong>Kata Kunci: </strong>Gulma; naungan; <em>nested plot;</em> Shannon-Wiener; tahun pangkas</p> <p>&nbsp;</p> Ayu Rimonawasni Manalu, Ahmad Ghozali Ardiansyah Copyright (c) 2026 Ayu Rimonawasni Manalu, Ahmad Ghozali Ardiansyah http://creativecommons.org/licenses/by-nc-sa/4.0 https://tcrjournal.com/index.php/tcrj/article/view/239 Wed, 10 Jun 2026 00:00:00 +0700 Respons Aktivitas Biologi Tanah terhadap Berbagai Formulasi Pupuk Organik Berdasarkan Populasi Mikroba dan Respirasi CO2 https://tcrjournal.com/index.php/tcrj/article/view/240 <p><em>Soil biological activity is an important indicator in assessing the effectiveness of organic fertilizers on increasing soil fertility. This study aims to evaluate the response of soil biological activity based on microbial populations and CO₂ respiration rates in various organic fertilizer formulations. The study was conducted at the Research Institute for Tea and Chinchona, Bandung, using a Completely Randomized Design (CRD) with seven organic fertilizer treatments, namely tea waste biocompost, tea waste biocompost + Trichoderma spp., Bioneensis, Bioorganomineral, vermicompost, goat manure, and chicken manure, each with three replications. The parameters observed included the number of soil microbial populations and CO₂ respiration rates. The results showed that the type of organic fertilizer significantly affected the microbial population and soil CO₂ respiration. The highest microbial population was found in the tea waste biocompost, goat manure, and chicken manure treatments. The highest CO₂ respiration rate was found in the goat manure and tea waste biocompost + Trichoderma spp. treatments. The high CO₂ respiration was in line with the increased soil microbial activity, indicating the important role of organic fertilizer in increasing soil biological activity. Based on these results, tea waste biocompost + Trichoderma spp. and goat manure are recommended for field application because they are able to increase microbial activity and soil respiration optimally.</em></p> <p><strong><em>Keywords: </em></strong><em>CO₂ respiration</em><strong><em>, </em></strong><em>microbial population, organic fertilizers, tea waste biocompost, soil biological</em></p> Restu Wulansari, Davina Raisha Nathania Copyright (c) 2026 Restu Wulansari, Davina Raisha Nathania http://creativecommons.org/licenses/by-nc-sa/4.0 https://tcrjournal.com/index.php/tcrj/article/view/240 Wed, 10 Jun 2026 00:00:00 +0700