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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Biotropika Jurnal Riset Kimia Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Elkawnie Jurnal Kimia Mulawarman Chimica et Natura Acta Indonesian Journal of Pure and Applied Chemistry Chemistry Indonesian Journal of Chemical Research Martabe : Jurnal Pengabdian Kepada Masyarakat IKRA-ITH ABDIMAS Indonesian Journal of Chemical Analysis (IJCA) Jurnal Agronomi Tanaman Tropika (JUATIKA) Journal of Tropical Marine Science Stannum : Jurnal Sains dan Terapan Kimia ASEAN Journal of Chemical Engineering Jurnal Abdi Insani Jurnal Sains dan Edukasi Sains SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Pijar MIPA Dharma Pengabdian Perguruan Tinggi (DEPATI) Jurnal Pengabdian Pada Masyarakat Journal of Pharmascience
Roanisca, Occa
Department Of Chemistry, Faculty Of Engineering, Universitas Bangka Belitung
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Skrining Fitokimia dan Antibakteri Ekstrak Etanol Daun Binjai (Mangifera caesia) Terhadap Bakteri Escherichia coli Occa Roanisca; Robby Gus Mahardika
Journal of Pharmascience Vol. 8 No. 2 (2021): Jurnal Pharmascience
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jps.v8i2.9166

Abstract

 Escherichia coli merupakan bakteri Gram negatif yang dapat menimbulkan infeksi saluran kemih, saluran empedu,  penyakit serius lainnya di rongga perut, dan keracunan makanan yang ditandai dengan diare. Penyakitinfeksiyang disebabkan oleh bakteri dapat diobati dengan mengonsumsi antibiotik. Akan tetapi, resistensi bakteri terhadap antibiotik telah dilaporkan. Oleh karena itu perlunya pencarian obat dari bahan alami. Berdasarkan kajian literatur, Binjai (Mangifera caesia) telah dilaporkan memiliki aktivitas sebagai antibakteri. Tujuan penelitian ini adalah untuk mengetahui kandungan metabolit sekunder dan aktivitas antibakteri daun binjaiasal Bangka terhadap bakteri Eschericha coli.  Metode ekstraksi pada penelitian ini adalah maserasi dengan pelarut etanol 96% selama 3 x 24 jam. Skrining fitokimia dilakukan secara kualitatif dengan menggunakan pereaksi,dan pengujian antibakteri menggunakan metode difusi cakram. Berdasarkan hasil pengujian fitokimia didapatkan bahwa ekstrak etanol daun binjaididuga mengandung metabolit sekunder seperti alkaloid, flavonoid, tanin/fenol hidrokuinon, steroid, terpenoid dan saponin. Ekstrak etanol daun binjaimampu menghambat pertumbuhan bakteri E. colipada konsentrasi 20% dengan diameter zona beningsebesar 3.94 mm, konsentrasi 40% sebesar 5.38 mm, konsentrasi 60% sebesar 5,82 mm, serta pada konsentrasiekstrak 80% membentuk zona beningsebesar 6,90 mm.Berdasarkan data tersebut bioaktivitas antibakteri ekstrak daun binjai tergolong sedang. Kata Kunci: Mangiferacaesia, Escherichia coli, Antibakteri Escherichia coli is a Gram-negative bacteria that can cause urinary tract infections, bile ducts, other serious diseases in the abdominal cavity, and food poisoning characterized by diarrhea. Infectious diseases caused by bacteria can be treated by taking antibiotics. However, bacterial resistance to antibiotics has been reported. Therefore, it is necessary to search for drugs from natural ingredients. Based on literature review, Binjai (Mangifera caesia) has been reported to have antibacterial activity. The purpose of this study was to determine the content of secondary metabolites and antibacterial activity of Bangka binjai leaves against Eschericha coli bacteria. The extraction method in this study was maceration with ethanol for 3 x 24 hours. Phytochemical screening was carried out qualitatively using reagents, and antibacterial testing using the disc diffusion method. Based on the results of phytochemical testing, it was found that the ethanol extract of binjai leaves contained secondary metabolites such as alkaloids, flavonoids, tannins / phenol hydroquinones, steroids, terpenoids and saponins. Binjai leaf ethanol extract was able to inhibit the growth of E. coli bacteria at the concentration of 20% with a clear zone diameter of 3.94 mm, concentration of 40% of 5.38 mm, concentration of 60% of 5.82 mm, and concentration of 80% extractforming a clear zone of 6.90 mm. Based on these data, binjai leaves have the potential to be used as an antibacterial drug.
Analysis of Lead (PB) Metal Content in Soil and Peanut Seeds Arachis hypogaea With the Application of Coal Ash Fly Ash and Bottom Ash (FABA) in Post-Tin Mining Land Nyayu Siti Khodijah; Ismed Inonu; Deni Pratama; Occa Roanisca; Muhammad Fauzan Ridho; Nyayu Siti Khodijah
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.4958

Abstract

The increase of heavy metal content in post-mining land is one of the main challenges in using tin mine tailings for agricultural activities. This study aimed to determine lead changes (Pb) concentrations in tin mine tailings after the application of Faba (fly ash–bottom ash) and the cultivation of peanut (Arachis hypogaea L.), and to evaluate the potential for Pb accumulation in peanut seeds. The experiment was conducted using five levels of Faba application (0; 15; 30; 45; and 60 tons/ha) on tin mine tailings, followed by peanut cultivation for one growing season. The results showed that Faba application increased total soil Pb concentration from 0.09 mg/kg (without Faba) to 19.58 mg/kg (60 tons/ha). However, after peanut cultivation, soil Pb content in all treatments decreased to below the AAS detection limit (< 8.73 mg/kg). Analysis of peanut seeds revealed that Pb levels were also below the detection limit (< 0.165 mg/kg), indicating no significant Pb accumulation in the seeds. This study demonstrates that applying Faba at certain doses can modify the chemical characteristics of mine tailings, and that peanut cultivation has the potential to reduce soil Pb levels through absorption and immobilization mechanisms. The key finding of this study is that combining Faba application at 30–45 tons/ha with peanut cultivation effectively reduces soil Pb content without increasing contamination in harvested seeds. Furthermore, peanut seeds remain safe for consumption due to their very low Pb concentration. Therefore, integrating Faba-based amelioration with the cultivation of excluder or phytoremediation plants, such as peanuts, is recommended as an environmentally friendly tailings reclamation strategy that supports sustainable food security.
SYNTHESIS OF ALPHA TERPINEOL FROM THE ESSENTIAL OIL OF SAPU-SAPU PLANT USING A COMBINATION OF NATURAL ACID CATALYST OF STARFRUIT AND SYNTHETIC ACID Dea lestari; Occa Roanisca; Nurhadini
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 7 No. 1 (2025): January - June 2025
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v7i1.11485

Abstract

Belimbing wuluh (Averrhoa bilimbi L.) adalah tumbuhan yang tidak termasuk kedalam tumbuhan musiman yang banyak tumbuh di Bangka Belitung dan memiliki rasa yang asam. Buah belimbing wuluh memiliki kandungan AHA seperti asam malat, asam askorbat, dan asam sitrat. Potensi rasa asam buah belimbing wuluh dapat digunakan sebagai katalis pada sintesis alfa terpineol dari alfa pinene minyak atsiri tumbuhan sapu-sapu. Alfa terpineol dapat disintesis dengan tanpa kombinasi dan kombinasi katalis. Katalis yang digunakan seperti asam sulfat 15%, asam asetat 99,5%, dan asam buah belimbing wuluh. Tujuan dari penelitian ini adalah dapat mengetahui persen area alfa terpineol dengan variasi komposisi katalis, dan dapat menentukan kadar alfa terpineol dengan variasi komposisi katalis. Persen area alfa terpineol yang dihasilkan tertinggi pada katalis asam sulfat (15%) sebesar 16,76%, katalis kombinasi 1 sebesar 12,13%, katalis kombinasi 2 sebesar 8,38%, katalis asam asetat (99,5%) sebesar 3,22%, dan katalis asam buah belimbing wuluh sebesar 0,42%. Kadar alfa terpineol yang dihasilkan tertinggi pada katalis asam sulfat (15%) sebesar 33,14%, katalis kombinasi 1 sebesar 23,99%, katalis kombinasi 2 sebesar 16,57%, katalis asam asetat (99,5%) sebesar 6,36%, dan katalis asam buah belimbing wuluh sebesar 0,83%.   Belimbing wuluh (Averrhoa bilimbi L.) is a plant that is not included in seasonal plants that grow in Bangka Belitung and has a sour taste. Starfruit contains AHA compounds, including malic acid, ascorbic acid, and citric acid. The potential sour taste of starfruit can be used as a catalyst in the synthesis of alpha terpineol from alpha pinene of sapu-sapu essential oil. Alpha terpineol can be synthesized with no catalyst or a combination of catalysts. The catalysts used are sulfuric acid (15%), acetic acid (99.5%), and starfruit acid. The purpose of this study was to determine the percentage area of alpha terpineol with variations in catalyst composition, and to determine the levels of alpha terpineol with variations in catalyst composition. The percentage area of alpha terpineol produced was highest in sulfuric acid catalyst (15%), at 16.76%, combination catalyst one at 12.13%, combination catalyst two at 8.38%, acetic acid catalyst (99.5%) at 3.22%, and starfruit acid catalyst at 0.42%. The highest alpha terpineol content was produced in sulfuric acid catalyst (15%) at 33.14%, combination catalyst one at 23.99%, combination catalyst two at 16.57%, acetic acid catalyst (99.5%) at 6.36%, and starfruit acid catalyst at 0.83%.
COMPARISON OF THE AGE OF SAPU-SAPU (Baeckea frutescens L.) LEAVES BOW DOWN AND UNBOWED ON THE YIELD AND PHYSICAL FEATURES OF OIL USING STEAM-HYDRO DISTILLATION METHODS Della Adelia; Occa Roanisca; Ristika Oktavia Asriza
SPIN JURNAL KIMIA & PENDIDIKAN KIMIA Vol. 7 No. 1 (2025): January - June 2025
Publisher : UIN Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/spin.v7i1.12944

Abstract

Minyak atsiri merupakan minyak yang bersifat volatil, tersusun dari senyawa golongan terpenoid (monoterpen dan seskuiterpen). Salah satu tumbuhan yang berpotensi dijadikan minyak atsiri adalah tumbuhan sapu-sapu (Baeckea frutescens L.) Kepulauan Bangka Belitung. Tujuan dari penelitian ini untuk mengetahui perbandingan rendemen, karakteristik, dan komponen senyawa kimia dalam minyak atsiri daun sapu-sapu merunduk dan tidak merunduk pada umur panen di atas dan kurang dari 2 tahun. Metode yang digunakan dalam penelitian ini adalah destilasi uap air. Rendemen minyak atsiri yang dihasilkan dari tumbuhan sapu-sapu daun merunduk di atas 2 tahun (DM+2), daun tidak merunduk di atas 2 tahun (DTM+2), daun merunduk kurang dari 2 tahun (DM-2) dan daun tidak merunduk kurang dari 2 tahun (DTM-2) berturut-turut adalah 0,598%, 0,595%, 0,505% dan 0,544%. Minyak atsiri dari daun sapu-sapu merunduk di atas 2 tahun memiliki aroma dan warna lebih dominan dibandingkan dengan yang lainnya. Komponen senyawa kimia yang dihasilkan dari empat variasi minyak atsiri ini berbeda-beda. Minyak atsiri daun sapu-sapu jenis merunduk di atas 2 tahun memiliki total persentase komponen senyawa kimia area sebesar 97,49% dan merunduk kurang dari 2 tahun sebesar 97,74%. Sedangkan komponen senyawa kimia minyak atsiri daun sapu-sapu jenis tidak merunduk di atas 2 tahun sebesar 98,54% dan tidak merunduk kurang dari 2 tahun sebesar 98,38%.   Essential oil is a volatile oil, composed of terpenoid group compounds (monoterpenes and sesquiterpenes). One of the plants that has the potential to be used as an essential oil is the Bangka Belitung Islands sapu-sapu plant (Baeckea frutescens L.). The purpose of this study was to determine the comparison of yield, characteristics, and components of chemical compounds in the essential oil of sapu-sapu leaves, ducking and not ducking at harvest ages above and below 2 years. The method used in this research is the water vapor distillation method. The yield of essential oil produced from sapu-sapu leaves ducked above 2 years (DM+2), leaves not ducked above 2 years (DTM+2), leaves ducked less than 2 years (DM-2) and leaves not ducked less than 2 years (DTM-2) are 0.598%, 0.595%, 0.505% and 0.544% respectively. Essential oil from sapu-sapu leaves ducked over 2 years has a more dominant aroma and color compared to the others. The components of chemical compounds produced from the four variations of essential oil are different. Essential oil of sapu-sapu leaf type aged for more than 2 years has a total percentage of chemical compound components of 97.49%, while that aged for less than 2 years has a total rate of 97.74%. While the chemical compound component of the essential oil of sapu-sapu leaves of the type that does not bow above 2 years is 98.54%, and does not bow less than 2 years is 98.38%.
Antioxidant and Anti-tyrosinase Activities of Nanocream of Resam Leaves (Dicranopteris lineraris) and Jeruk Kunci Fruits Waste (Citrus x microcarpa) Extract Roanisca, Occa; Hidayat, Rian; Tafdila, Nova Azka
Elkawnie Vol. 11 No. 2 (2025)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v11i2.29453

Abstract

Abstract: Premature aging especially among women has become a serious problem that impacts self-confidence. This is caused by exposure to excess ultraviolet radiation, which induces the formation of reactive oxygen species and increases the activity of tyrosinase enzymes in the melanogenesis process. This study examined the antioxidant and anti-tyrosinase capabilities of nanocream formulated with Dicranopteris linearis (resam) leaf and Citrus x microcarpa (jeruk kunci) fruit extracts sourced from Bangka Belitung. A stepwise microwave-assisted extraction process was conducted using three solvents n-hexane, ethyl acetate, and ethanol, with ethanol proving most effective at extracting bioactive compounds (64.97% yield from resam leaves and 21.12% from jeruk kunci). Phytochemical screening showed that ethanol extracts contained the highest levels of active compounds: resam extracts had 179.78 mg GAE/g total phenolics and 90.33 mg QE/g total flavonoids, while jeruk kunci extracts contained 135.65 mg GAE/g phenolics and 72.64 mg QE/g flavonoids. Physical characterization confirmed the nanocream met quality standards specified in Indonesian National Standard SNI 16-4954-1998. Biological testing revealed strong antioxidant properties, with the nanocream achieving IC₅₀ values between 7.34 and 16.36 μg/mL, markedly better than single extracts alone (IC₅₀ 29.58–72.33 μg/mL). The formulation also showed considerable tyrosinase inhibitory activity at IC₅₀ 100.16 μg/mL. The results indicate the potential of resam leaves and jeruk kunci fruits extract nanocream as an innovative natural ingredient-based anti-aging cosmetic preparation. Abstrak: Penuaan dini terutama di kalangan wanita telah menjadi masalah serius yang berdampak pada kepercayaan diri. Hal ini disebabkan oleh paparan radiasi ultraviolet berlebih yang menginduksi pembentukan reactive oxygen species dan meningkatkan aktivitas enzim tirosinase dalam proses melanogenesis. Penelitian ini bertujuan mengembangkan sediaan nanokrim anti-aging dari ekstrak daun resam (Dicranopteris linearis) dan buah jeruk kunci (Citrus x microcarpa) asal Bangka Belitung. Ekstraksi bertingkat dengan metode Microwave Assisted Extraction menggunakan pelarut n-heksana, etil asetat, dan etanol menunjukkan rendemen tertinggi pada ekstrak etanol (64,97% daun Resam; 21,12% Jeruk Kunci). Ekstrak etanol kedua sampel mengandung senyawa fenolik dan flavonoid tertinggi dengan kadar fenolik total 179,78 mg GAE/g (daun resam) dan 135,65 mg GAE/g (limbah buah jeruk kunci) serta kadar flavonoid total 90,33 mg EK/g (daun resam) dan 72,64 mg QE/g (limbah buah jeruk kunci). Formulasi nanokrim menunjukkan karakteristik fisik memenuhi standar SNI 164954-1998. Sediaan nanokrim menunjukkan aktivitas antioksidan sangat kuat (IC50 7,34-16,36 μg/mL) dengan peningkatan signifikan dibandingkan ekstrak tunggal (IC50 29,58-72,33 μg/mL) serta aktivitas anti-tirosinase kategori kuat (IC50 100,16 μg/mL) melalui penghambatan enzim tirosinase. Hasil penelitian mengindikasikan potensi nanokrim ekstrak daun resam dan limbah buah jeruk kunci sebagai inovasi sediaan kosmetik anti-aging berbasis bahan alam.
Antioxidant and Antibacterial Activities of Nanoemulsion Formulated From Baeckea frutescens and Citrus x microcarpa Essential Oils Roanisca, Occa; Ropalia, Ropalia; Anggraeni, Anggraeni
Elkawnie Vol. 12 No. 2 (2026): Article In Press
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v12i2.32230

Abstract

Abstract: The use of essential oils in the development of natural pharmaceutical and cosmetic products as antioxidants and antibacterial agents is currently gaining popularity. Research on combining Baeckea frutescens L. essential oil with key lime (Citrus x microcarpa Bunge) peel waste remains limited despite their individual antimicrobial efficacy and potential synergistic effects as natural preservatives. This study aims to evaluate the antioxidant and antibacterial activities of essential oils from sapu-sapu plants and key lime fruit waste combined in nanoemulsion preparations. The essential oils were obtained through steam distillation and formulated into two nanoemulsion preparations, F1 (EOB:EOC, 40:60) and F2 (EOB:EOC, 60:40). The characteristics of F1 showed a particle size of 7.06 nm with a PDI of 0.0067, while F2 had a size of 14.64 nm with a PDI of 0.1528, indicating that both formulations showed good stability and homogeneity. The antioxidant activity test results showed an IC₅₀ of 3.3305 ppm for F1 and 4.5234 ppm for F2, indicating that F1 has stronger antioxidant activity through the DPPH method. The results of antibacterial activity tests against Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, and Cutibacterium acnes showed that both formulas had moderate to strong activity against all test bacteria, with F1 providing a wider inhibition zone than F2. The essential oil of sapu-sapu and the essential oil derived from key lime fruit waste, when combined in a nanoemulsion formulation, demonstrate potential as natural antibacterial and antioxidant agents, offering promising candidates for sustainable bioactive ingredients in pharmaceutical and food applications. Abstrak: Penggunaan minyak atsiri dalam pengembangan produk farmasi dan kosmetik alami sebagai agen antioksidan dan antibakteri saat ini semakin populer. Penelitian mengenai pengombinasian minyak atsiri Baeckea frutescens L. dengan minyak atsiri dari limbah kulit jeruk nipis (Citrus x microcarpa Bunge) masih terbatas, meskipun masing-masing telah diketahui memiliki efektivitas antimikroba serta potensi efek sinergis sebagai pengawet alami. Penelitian ini bertujuan untuk mengevaluasi aktivitas antioksidan dan antibakteri dari minyak atsiri tanaman sapu-sapu dan limbah buah jeruk nipis yang dikombinasikan dalam sediaan nanoemulsi. Minyak atsiri diperoleh melalui metode destilasi uap dan diformulasikan menjadi dua sediaan nanoemulsi, yaitu F1 (EOB:EOC = 40:60) dan F2 (EOB:EOC = 60:40). Karakteristik F1 menunjukkan ukuran partikel sebesar 7.06 nm dengan nilai PDI 0.0067, sedangkan F2 memiliki ukuran partikel 14.64 nm dengan nilai PDI 0.1528, yang mengindikasikan bahwa kedua formulasi memiliki stabilitas dan homogenitas yang baik. Hasil uji aktivitas antioksidan menunjukkan nilai IC₅₀ sebesar 3.3305 ppm untuk F1 dan 4.5234 ppm untuk F2, yang menandakan bahwa F1 memiliki aktivitas antioksidan yang lebih kuat berdasarkan metode DPPH. Hasil uji aktivitas antibakteri terhadap Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, dan Cutibacterium acnes menunjukkan bahwa kedua formula memiliki aktivitas sedang hingga kuat terhadap seluruh bakteri uji, dengan F1 menghasilkan zona hambat yang lebih luas dibandingkan F2. Minyak atsiri sapu-sapu dan minyak atsiri yang berasal dari limbah buah jeruk nipis, ketika dikombinasikan dalam formulasi nanoemulsi, menunjukkan potensi sebagai agen antibakteri dan antioksidan alami, sehingga berpeluang menjadi kandidat bahan bioaktif berkelanjutan untuk aplikasi farmasi dan pangan.
Co-Authors Addela Amelia Adibrata, Sudirman Adisyahputra Adisyahputra, Adisyahputra Andi Gustomi Anggraeni Anggraeni Anis Nurohma Aprilia, Selvy Ary Samsiar Candra Candra Christianingrum Dea lestari Della Adelia Delvia Safitri Deni Pratama Devi Valeriani Dewi Septia Ningsih Elicia, Resta Ependi, Eresti Eresti Ependi Eva Helda Fahrul Syarif, Ahmad Fajar Indah Puspita Sari Fajar Indah Puspita Sari Fajar Indah Puspita Sari Fika Dewi Pratiwi Firstin Rizki Annisa Hasibuan Fransiska, Destalia Fuad, Akmal Nur Fusfita Istiqomah Henri Henri Herry Marta Saputra Hidayati Hidayati Irma Akhrianti Ismed Inonu Kasro Daniati Layal, Kamalia Lingga, Rahmad Maya Yusnita Muhammad Fauzan Ridho Nosa Mayasani Notonegoro, Hartoyo Nurhadini Nurhadini Nurhadini Rani Rani RANI RANI, RANI Rian Hidayat Ristika Oktavia Asriza Robby Gus Mahardika Robiana, Sella Ropalia, Ropalia Sari Wulan Sari, Ratih Puspita Selvy Aprilia Sembiring, Rinawati Siti Aisyah Siti Aisyah Sito Enggiwanto Sri Rizki Pratiwi Surtina, Surtina Swandi, Monica K. Tafdila, Nova Azka Widia Widia Yana M. Syah Yana M. Syah Yulia Yulia Zulita, Zulita