Article Per Year (5 Year)
p-Index From 2021 - 2026
5.301
P-Index
This Author published in this journals
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 Pharmascience 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) 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
Roanisca, Occa
Department Of Chemistry, Faculty Of Engineering, Universitas Bangka Belitung
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 44 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 44 Documents
Search

 1   2   3   4   5 
Cytotoxicity activity of ethanol extract of mentangor stem skin (Calophyllum rufigemmatum) against breast cancer cells MCF-7 in vitro: Chemistry Widia Widia; Eresti Ependi; Addela Amelia; Candra Candra; Occa Roanisca
Jurnal Pijar Mipa Vol. 18 No. 1 (2023): January 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i1.4113

Abstract

Cancer is one of the non-communicable diseases that causes the most death in Indonesia. In a study conducted by researchers from Northwestern University on 686 breast cancer patients, 36% of women chose to stop their treatment because they could not tolerate the side effects of the drug. The patient's side effects were joint pain, hot flashes, increased weight gain, and nausea. Mentangor plant (Calophyllum rufigemmatum) is a plant that grows a lot in Bangka Belitung and has been used by the people of Bangka Belitung as a traditional medicine to treat skin diseases. Research on the bark of the mentangor stem from Bangka Belitung has never been carried out regarding its phytochemical content and potential as an anticancer breast. For this reason, it is necessary to know breast cancer's pharmacological effects and phytochemicals on Mentangor Bangka Belitung's stem bark. Phytochemical identification was carried out qualitatively by observing changes in the test sample. Based on the results of phytochemical screening, several reactions showed that each test of the ethanol extract of the stem bark of Mentangor contained tannins, phenolics, flavonoids, and alkaloids. The measurement results of the IC50 value of inhibition of the proliferation ethanol extract with a diameter of 1 cm, 7 cm, and 17 cm against MCF-7 breast cancer cells were 326,195 g/mL, respectively; 186.178 g/mL; and 178.090 g/mL.
Peningkatan Daya Saing UMKM Kelurahan Sri Menanti Melalui Fasilitasi Perolehan Perizinan Dasar Occa Roanisca; Robby Gus Mahardika; Maya Yusnita
Jurnal Pengabdian Pada Masyarakat Vol 7 No 2 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.851 KB) | DOI: 10.30653/002.202272.52

Abstract

IMPROVING THE COMVETITVENESS OF UMKM IN SRI MENANTI VILLAGE THROUGH FACILITATING THE ACQUISITION OF PRODUCT LEGALITY. Micro, Small and Medium Enterprises (UMKM) have a very strategic role in the people-based economic development in Indonesia. The strengthening of this role must be increased by equipping businesses with permits that have been determined by the Government, such as food safety education certificates, sanitation hygene-worthy certificates, and home industry food production certificates. There are still many UMKM in Sri Menanti Village that do not have these product legality. Therefore, this service activity will facilitate the management of these permits. The method in this service activity is in the form of direct assistance for submissions, facilitation of laboratory testing costs so that all fostered partners obtain these permits. The fostered partners in this activity amounted to seven UMKM determined by the Sri Menanti Village Party. The result of this service activity is that the seven assisted UMKM managed to get these permits. The seven UMKM already have food safety education certificates, two UMKM have received HS-worthy certificates and five other UMKM have received PIRT certificates. Obtaining this license will make it easier for the assisted UMKM to market their products more broadly.
PENDAMPINGAN DESAIN KEMASAN PADA KOMUNITAS KULINER KOTA PANGKALPINANG DALAM MENINGKATKAN DAYA SAING PRODUK Occa Roanisca; Devi Valeriani; Herry Marta Saputra; Nurhadini Nurhadini; Eva Helda; Ristika Oktavia Asriza
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 3 No 1 (2023): Mei 2023
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/depati.v3i1.4066

Abstract

Micro, Small and Medium Enterprises (MSMEs) play a very strategic role in community-based economic development in Indonesia. The existence of MSMEs has been proven to be able to survive when facing a crisis. This is because MSMEs are only on a small scale, so the business capital requirements are small, and they are able to adapt to market needs. Aspects that are very important to support the existence of MSMEs are business legality, packaging design and digital-based marketing. The Culinary Community of Pangkalpinang City has superior products. The products have been marketed to the public and are often offered at District, Regency and Provincial level exhibitions. However, these products do not yet have an attractive and safe packaging design. Based on the results of an audience with the Culinary Community administrators, to overcome this problem assistance is needed for MSME actors to design packaging for the Culinary Community. This activity will involve the management of the Culinary Community by facilitating several products to make packaging designs attractive and safe. To realize this there are several problems that partners (MSMEs) have, namely: lack of knowledge about designing stickers and product packaging in an attractive and safe manner. Solutions that can be offered to help partners by socializing and assisting safe and attractive sticker and packaging designs. To reach a wider market share, socialization and assistance is carried out in designing stickers and packaging. This community service activity went well. The results of the socialization activities found that the target partners understood the importance of packaging designs that were attractive, informative and could be used as promotions. Partners understand packaging can increase product sales. At the end of the mentoring activity, the service team facilitated and handed over standing pounch packages made of aluminum foil to three target partners representing the culinary community of Pangkalpinang City. The hope of the Pangkalpinang City Tourism Office is that this community service activity can continue to increase the existence and development of culinary delights in Pangkalpinang City.
The Effect of Temperature, Stirring, and Contact Time on Reducing Chemical Oxygen Demand (COD) Levels of Palm Oil Mill Effluent (POME) Using Cocoa Peels Adsorbent (Theobroma cacao L.) Firstin Rizki Annisa Hasibuan; Fajar Indah Puspita Sari; Occa Roanisca
Stannum : Jurnal Sains dan Terapan Kimia Vol 5 No 1 (2023): April 2023
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v5i1.3787

Abstract

Cocoa peels (Theobroma cacao L.) are one of the plantation wastes that haven’t been used optimally. The content of cocoa peels makes the peels potential to be used as an adsorbent to reduce COD levels of POME. POME is liquid waste from the processing palm oil industry. This study was aimed to determine the characteristics of the cocoa peels adsorbent and the effectiveness of using cocoa peels adsorbent in reducing COD levels of POME. The powder was activated using nitric acid to increase the surface area of the adsorbent. The cocoa peels adsorbent was further characterized to determination water and ash content, FTIR analysis, and SAA. Cocoa peels adsorbent contains 10.40% moisture and 4.08% ash. FTIR analysis showed the presence of groups O–H, C–H, C=C, C–O– C, C–O, C–NO2 on the adsorbent of cocoa peels. The surface area of the adsorbent cocoa peel increased after activation from 3.48071 m2/g to 3.93845 m2 /g. The method used to test the content COD of POME is closed reflux titrimetrically. Adsorpstion process used variation like temperature, stirring speed, and contact time. The best reduction was obtained at 30oC with a stirring speed of 600 rpm at 120 minutes contact time, with 76.19% removal percentage for COD.
Total Phenolic and Flavonoid Test of Gleichenia linearis Leaf Extract as Antioxidant Using Microwave Assisted Extraction Sri Rizki Pratiwi; Occa Roanisca; Nurhadini Nurhadini
Stannum : Jurnal Sains dan Terapan Kimia Vol 5 No 2 (2023): Oktober 2023
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v5i2.4318

Abstract

Paparan sinar ultra violet (UV) yang bersumber dari cahaya matahari dan paparan radiasi seperti penggunaan ponsel, laptop, dan lain-lain dapat menjadi faktor terbentuknya radikal bebas. Paparan radikal bebas berlebih akan menyebabkan stres oksidatif sehingga diperlukan pertahanan yang dapat mencegah kerusakan, salah satunya menggunakan antioksidan. Salah satu sumber antioksidan adalah daun resam. Ekstrak daun resam diketahui memiliki kandungan flavonoid, alkaloid, tanin, saponin, steroid dan triterpenoid. Penelitian ini bertujuan untuk mengetahui pengaruh pelarut dan variasi waktu ekstraksi terhadap rendemen, total fenolik, total flavonoid, dan aktivitas antioksidan ekstrak daun resam, serta mengetahui hubungan antara kandungan total fenolik dan kandungan total flavonoid terhadap aktivitas antioksidan. Pengujian terdiri dari uji total fenolik menggunakan metode Folin-Ciocalteau, uji total flavonoid menggunakan metode AlCl3, dan uji antioksidan menggunakan metode DPPH. Pelarut yang digunakan berupa aseton dan etanol, sedangkan lama waktu ekstraksi yang digunakan yaitu 5, 10, 15 dan 30 menit. Hasil rendemen, total fenolik, total flavonoid, dan aktivitas antioksidan tertinggi pada penelitian ini dihasilkan oleh pelarut etanol dengan waktu MAE selama 10 menit, dengan nilai berturut-turut 62,21%, 172,9 mg EAG/g, 110,60 mg EK/g, dan 24,12 µg/mL. Pengujian korelasi menunjukkan total fenolik berperan sebesar 95,5% sedangkan total flavonoid berperan sebesar 56,5% terhadap aktivitas antioksidan (IC50) yang dihasilkan. Fenolik merupakan senyawa yang paling dominan didalam ekstrak daun resam yang berperan sebagai antioksidan.
PENDAMPINGAN PEMBUATAN MASKER PEEL OFF PUCUK KAYU LUBANG Timonius flavescens (Jacq.) Baker MENJADI PRODUK UNGGULAN DESA AIK ABIK Robby Gus Mahardika; Occa Roanisca; Henri Henri; Selvy Aprilia
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 1 (2024): MARTABE : JURNAL PENGABDIAN KEPADA MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i1.161-165

Abstract

Dusun Aik Abik memiliki potensi tumbuhan obat yang sangat tinggi. Masyarakat masih sering memanfaatkan tumbuhan obat sebagai terapi pengobatan. Tumbuhan kayu lubang (Timonius flavescens (Jacq.) Baker) sering digunakan masyarakat setempat untuk perawatan wajah dan mengobati jerawat. Tumbuhan tersebut dapat dikembangkan menjadi produk turunan masker peel off yang dapat dijadikan sebagai produk unggulan desa. Oleh karena itu, melalui kegiatan pengabdian kepada masyarakat ini tim pengabdi mentransfer inovasi pengolahan pucuk kayu lubang sebagai masker peel off untuk mendukung pemanfatan tumbuhan lokal menjadi produk yang bernilai ekonomi tinggi. Metode yang digunakan pada kegiatan ini berupa sosialisasi dan pendampingan secara langsung kepada mitra sasaran perangkat lembaga adat Dusun Aik Abik dan masyarakat.  Hasil kegiatan pengabdian kepada masyarakat ini adalah mitra sasaran memahami cara formulasi masker peel off berbahan pucuk kayu lubang dan menerima desain kemasan yang telah dicetak oleh tim pengabdi. Komitmen mitra sasaran akan melanjutkan pengembangan masker peel off menjadi produk unggulan Dusun Aik Abik.
Identifikasi Morfometrik Belangkas (Family: Limulidae) Di Pantai Tanjung Punai Kabupaten Bangka Barat Fuad, Akmal Nur; Aisyah, Siti; Pratiwi, Fika Dewi; Roanisca, Occa; Swandi, Monica K.
Journal of Tropical Marine Science Vol 7 No 2 (2024): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jour.trop.mar.sci.v7i2.5426

Abstract

Tanjung Punai is one of the beach in the coastal area of ​​West Bangka Regency which has conditions in the form of sandy beaches and mangrove ecosystems. These conditions support various biota that live and develop, one of which is the horseshoe crab. Horseshoe crab are aquatic invertebrates belonging to the phylum Arthropoda and the family Limulidae. The morphometric characters of horseshoe crab doves have different variations based on geographical area. This research aims to identify horseshoe crab based on morphology and morphometrics in Tanjung Punai Beach. The research was carried out in April-May 2022 at Tanjung Punai Beach, West Bangka Regency. The research method uses methods purposive sampling as well as data analysis using Independent Samples T-Test and simple linear regression analysis. The species found is Carcinoscorpius rotundicauda and Tachypleus gigas. The significance value is 0.00 (p < 0.05) and the t value thit > ttab shows that there are differences in the average morphometric characters between the two species.
Increasing the Competitiveness of MSME Products through Obtaining Basic Licensing to Support the Availability of Clean and Halal Standard Products Roanisca, Occa
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 3 No 2 (2023): November 2023
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/depati.v3i2.4068

Abstract

The Indonesian government has always paid considerable attention to the existence and development of Micro, Small and Medium Enterprises (MSMEs). This is because the number of MSMEs in Indonesia is very large, and MSMEs are able to absorb a high enough workforce with small business capital that easily adapts to market needs. The current era of digitalization requires MSME players to maximize promotional and marketing activities online. Besides that, MSMEs must obtain basic permits such as IUMK, HS and PIRT permits. Sinar Jaya Jelutung Village is located in Bangka Regency, has 98 MSME units. MSMEs that have pocketed new permits are 34%. The type of MSME cultivated by the community in the Sinar Jaya Jelutung Village is processed food. MSMEs do not yet have an online market place to sell MSME products online. Therefore, there is a need for assistance for MSMEs in the Sinar Jaya Jelutung Village to create technology-based and competitive businesses. To realize this there are several problems that partners (MSMEs) have, namely: lack of knowledge regarding clean standard production processes, and procedures for registration to obtain IUMK, HS and PIRT permits. Another problem that partners have is limited knowledge in using technology for promotion and marketing, so they have not reached a wider market share. Solutions that can be offered are to help partners by increasing knowledge about production processes with clean standards by conducting direct coaching to partners, facilitating the registration of IUMK permits, Certificates of Eligible Hygene Sanitation and PIRT. In order to reach a wider market share and to have strong coordination among MSME players, training was conducted on registration and design of packaging stickers for the promotion and marketing of all MSME products in the Sinar Jaya Jelutung Village. Community service activities with targeted partners for MSME actors in the Sinar Jaya Jelutung Sub-District are running smoothly and well, so they can achieve the set targets. This community service activity is in the form of outreach and direct assistance to target partners. The knowledge and awareness of MSME actors has increased regarding the submission of product legality, at the end of the activity all MSME actors already have NIB and PIRT certificates. Awareness of having attractive and informative packaging stickers is increasing, MSME players have received packaging stickers to support product promotion.
Aktivitas Antioksidan dan Fitokimia dari Ekstrak Etil Asetat Pucuk Idat (Cratoxylum glaucum) Mahardika, Robby Gus; Roanisca, Occa
Indonesian Journal of Chemical Research Vol 5 No 2 (2018): Edisi Bulan Januri (Edition For January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2018.5-rob

Abstract

Neutralizing free radicals can use both synthetic and natural antioxidant compounds. Although synthetic antioxidant compounds are more active, but lately the use of synthetic antioxidants is being reduced because they are reported to have carcinogenic side effects. Natural antioxidant compounds found in plants are phenolic groups such as flavonoids, tannins, xanthones, and anthraquinones. This compound is widely found in the genus Cratoxylum where one of the species is pucuk idat (Cratoxylum glaucum). Pucuk idat are often used by people of Bangka as a flavoring dish and are believed to be traditional medicine to facilitate breastfeeding, tighten skin, treat fever, cough, and diarrhea. The increasing of antioxidants needs and lots efficacy of pucuk idat, hence this study aims to determine the antioxidant activity of ethyl acetate extract Cratoxylum glaucum. The antioxidant test in this study used the DPPH (Diphenylpicrylhydrazyl) method and vitamin C as a positive control. The results of this study indicate that the extract of ethyl acetate Cratoxylum glaucum has strong antioxidant activity with value IC50 32,213 μg / mL. Phytochemical content itself includes hydroquinone phenols (tannins), flavonoids, and steroids. This shows that ethyl acetate extract Cratoxylum glaucum can be used as natural antioxidant.
Potensi Antibakteri Ekstrak Daging Buah Kelubi (Eleiodoxa conferta) Bangka Belitung Menggunakan Microwave-Assisted Extraction (MAE) Surtina, Surtina; Sari, Ratih Puspita; Zulita, Zulita; Rani, Rani; Roanisca, Occa; Mahardika, Robby Gus
Indonesian Journal of Chemical Research Vol 7 No 2 (2020): Edisi Bulan Januari (Edition for January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.7-sur

Abstract

Antibacterial tests were carried out using ethanol extract of kelubi meat (Eleidoxa conferta), extraction using the Microwave-Assisted Extraction method with a ratio of 2: 20 for 30 minutes at 60 °C. Antibacterial tests using diffusion methods with concentrations of 20%, 40%, 60%, 80%, and 100%; positive control of 0.005% amoxillin and DMSO negative control. Antibacterial test results showed that the inhibition zone of ethanol extract in E. coli bacteria with a concentration of 20% was in the moderate category, for a concentration of 40% including the strong category while the concentration of 60%, 80% and 100% was very strong. The inhibition zone of ethanol extract for the S. aureus bacterium with a concentration of 20% is included in the strong category while the concentration of 40%, 60%, 80%, and 100% is categorized as very strong. From these results it can be concluded that the inhibitory zone in Stapylococcus aureus bacteria is greater than that of E. coli bacteria.
Co-Authors Addela Amelia Adibrata, Sudirman Adisyahputra Adisyahputra, Adisyahputra Andi Gustomi Anis Nurohma Aprilia, Selvy Ary Samsiar Candra Candra Christianingrum Della Adelia, Della Delvia Safitri 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 Henri Henri, Henri Herry Marta Saputra Hidayati Hidayati Irma Akhrianti Ismed Inonu Kasro Daniati Layal, Kamalia Lestari, Dea Lingga, Rahmad Maya Yusnita Nosa Mayasani Notonegoro, Hartoyo Nurhadini Nurhadini Nurhadini Rani Rani RANI RANI, RANI Ristika Oktavia Asriza Robby Gus Mahardika Robiana, Sella Sari Wulan Sari, Ratih Puspita Selvy Aprilia Sembiring, Rinawati Siti Aisyah Siti Aisyah Sito Enggiwanto Sri Rizki Pratiwi Surtina, Surtina Swandi, Monica K. Verry Andre Fabiani Widia Widia Yana M. Syah Yana M. Syah Yulia Yulia Zulita, Zulita