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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences AL KAUNIYAH Abdimas TARBIYA : Journal Education in Muslim Society AGRIVITA, Journal of Agricultural Science BIOMA Journal of Biology Education Unnes Science Education Journal Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Biosaintifika: Journal of Biology & Biology Education Journal of Innovative Science Education Journal of Creativity Student Dinamika Journal : Pengabdian Masyarakat Jurnal Panjar: Pengabdian Bidang Pembelajaran Life Science Jurnal Abdimas Life Science
Niken Subekti
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Effective control of Alphitobius diaperinus using natural bioinsecticides : Effective control of Alphitobius diaperinus using natural bioinsecticides Niken Subekti; Shinta Hedy Cahyaningrum; Sonika Maulana
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.01

Abstract

Pest insects known as darkling beetles (Alphitobius diaperinus) are common in poultry farms. These pests can develop into a variety of disease vectors, causing damage to chicken coops, decreased chick performance, and financial losses to farmers. In Indonesia, synthetic insecticides are still used for pest control, which is detrimental to non-target creatures and the environment. The purpose of this study is to analyze the effectiveness of biopesticides from cinnamon bark extract (Cinnamomum aromaticum), nutmeg seeds (Myristica fragrans), lavender flowers (Lavandula angustifolia), and lime peel (Citrus aurantifolia), as well as synthetic insecticides alpha-cypermethrin against A. diaperinus larvae and imago. Bioinsecticide levels are 2.5%, 5%, 7.5%, and 10%, while alpha-cypermethrin levels are 1%, 4%, 7%, and 10%, respectively, based on LC50 values. The analysis was repeated three times and the treatment was carried out every two days for a total of 14 days. The data were analyzed with paired sample t-tests to determine the average difference in each treatment when there was an average difference and calculated N-Gain score to determine the effectiveness of biopesticides and synthetic insecticides. The average value of N-Gain essential oil from cinnamon bark extract was successful in causing A.diaperinus death in the imago stage (81.14) and the highest larvae (80) of other test solutions. Cinnamon bark extract and nutmeg seed extract are effective in imago (95.14) and larvae (78.91), respectively, and can be used as a natural biopesticide to replace synthetic insecticides in the control of A.diaperinus in imago and larvae stages.
Pemanfaatan Mesin Grandling untuk Penggilingan Biji Kopi pada Kelompok Petani Kopi di Desa Kalisidi, Kabupaten Semarang Niken Subekti; Sonika Maulana; Rifa’atunnisa Rifa’atunnisa; Aprilia Findayani; Fahrur Rozi; Heru Setyanto
Jurnal Abdimas Vol 27, No 1 (2023): June 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/abdimas.v27i1.45675

Abstract

Kesadaran masyarakat petani kopi di Kalisidi, Kabupaten Semarang untuk meningkatkan kualitas dan pendapatan dalam mengelola biji kopi hasil petani. Adanya petani dan pengolah kopi di sekitar masyarakat lingkungan tersebut, awalnya hanya membeli dan menjual kopi, kemudian dibuat kelompok petani kopi agar mampu untuk mengolah kopi. Biji kopi yang didapatkan hasil petani, dimanfaatkan sebagai serbuk kopi oleh pengolah kopi di wilayah tersebut. Transformasi teknologi yang dikembangkan di wilayah daerah Kalisidi antara lain meningkatkan kualitas kopi dengan menggunakan teknologi pembuatan mesin grandling hilirisasi hasil penelitian dari Tim UNNES. Tim Pengabdian ini sangat dibutuhkan untuk mendukung efisiensi energi dan peningkatan kualitas kopi. Teknologi pembuatan mesin grandling untuk pengolahan biji kopi, mampu meningkatkan pendapatan petani dan pengolah kopi, meningkatkan kualitas kopi dan efisiensi energi. Pembuatan mesin grandling merupakan teknologi inovasi baru hilirisasi produk hasil penelitian tim Pengabdian UNNES. Selama kegiatan dilakukan pendampingan dan monitoring evaluasi untuk mengukur ketercapaian target.
Termite Identification Attacks on Buildings Niken Subekti; Anita Fadhila
Biosaintifika: Journal of Biology & Biology Education Vol 15, No 2 (2023): August 2023
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v15i2.43236

Abstract

House construction continues from time to time, the frequency of termite attacks on buildings in the area is also very high due to the disturbance of the termite's natural habitat. Termites target the structural wood of buildings and objects derived from cellulose. This study aims to analyze the diversity of termite, house component damage, the relationship between the age and condition of building in Jakarta, Indonesia . This study used a purposive sampling method from 134 houses in Jakarta, Indonesia with a cross-sectional approach. The research procedures included taking and identifying specimens, analyze the intensity percentage of building damage, analyze the relationship between the age of the building and the condition of the building, and environmental factors. Based on the results of research conducted on 134 houses in Jakarta, it is concluded that there are four types of termites in the study sites: C. curvignathus (61.14%), M. gilvus (18.65%), M. inspiratus (10.88%), and C. cynocephaus (9.33%). The worst damage to residential components is found in the sills. Based on statistical tests, there is a correlation between age and the condition of the building. It indicates that the age of the building is significantly related to its condition. 
The Potential of Microbial Symbionts Macrotermes gilvus Hagen Termite Gut as Degrading Agents of Cellulose in Bioethanol Production Dewi Susilowati; Niken Subekti; Siti Harnina Bintari
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 2 (2018): August 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v10i2.14965

Abstract

Water hyacinth is a potential feedstock for bioethanol production because of their high cellulose. The microbial symbionts of the Macrotermes gilvus termite’s gut have a high endoglucanase enzyme activity. This research was aimed to analyze the pH, temperature and agitation effects towards cell density, endoglucanase enzyme activity and reducing sugar, and to determine the effective optimum condition that can produce maximum reducing sugar. This research used central composite design (CCD) with the total number of run was . The independent variables were including pH (5.9, 6.4, 7.0, 7.6, 8.0), temperature (30 0C, 33 0C, 37 0C, 41 0C, 44 0C) and agitation (90 rpm,114 rpm, 150 rpm,185 rpm, 210 rpm), with six replications at central points. Parameters measured were cell density, endoglukanase enzyme activity and reducing sugar, thus analyzed by the statistical software package MINITAB 18.0. The Student’s t-test result showed the primary sequence influencing cell density as pH ˃ agitation ˃ temperature and towards endoglucanase enzyme activity and reducing sugar as pH ˃ temperature ˃ agitation, P ˂ 0.05. The maximum reducing sugar (60.13 ± 3.16 mmolL-1) was obtained at pH 6.95, temperature 37 0C and agitation 150 rpm. The results of this research can be used to explore the more potential microbial symbionts of the Macrotermes gilvus Hagen termite’s gut.
KANDUNGAN BAHAN ORGANIK DAN AKUMULASI MINERAL TANAH PADA BANGUNAN SARANG RAYAP TANAH Macrotermes gilvus Hagen (BLATTODEA: TERMITIDAE) Niken Subekti
Biosaintifika: Journal of Biology & Biology Education Vol 4, No 1 (2012): March 2012
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v4i1.2263

Abstract

Rayap Macrotermes gilvus Hagen mempunyai peranan ekologis rayap tanah M. gilvus sebagai degradator primer di dalam hutan, eksplorasi perananannya sebagai agen biologis dalam perbaikan vegetasi dan perbaikan kualitas tanah. Rayap dapat memodifikasi sifat fisik dan kimia tanah. Penelitian tentang kandungan bahan organik telah dilakukan dengan analisis proksimat (metode Weende), sementara akumulasi mineral tanah menggunakan metode X-Ray berdasarkan Analysis Program Cristallynity. Rayap M. gilvus Hagen merupakan komponen penting dalam memodifikasi beragam mineral dari tanah disekitarnya. Hasil penelitian menunjukkan bahwa terdapat perbedaan nyata antara komposisi mineral tanah dalam sarang rayap M. gilvus Hagen dengan mineral tanah disekitar sarang. Hasil penelitian menunjukkan kandungan bahan organik dalam bangunan sarang menghasilkan sebesar 98.33% dan padatannya 1.67%. Padatan ini terdiri dari karbohidrat sebesar 3.16%, abu 4.19%, lemak 23.95%, protein sebesar 39.52%, dan sisanya 29.18% berupa mineral-mineral. Bangunan sarang rayap yaitu SiO2 dan Despujolsite yang dibawa dari lingkungan sekitar kedalan bangunan sarang. Unsur-unsur yang lain diperoleh dari sebagian material yang berasal dari saliva, humus dan tanah sekitar sarang. The termite Macrotermes gilvus Hagen plays an ecological role. Subterranean termites M. gilvus is considered as the primary degradator in the forest, and therefore the exploration of its role as the biological agent to recover the vegetation and soil quality might be useful. Termites could modify the physical and chemical nature of soil. M. gilvus Hagen was an important component in modifying various minerals of the surrounding soil.  Research on the content of the organic materials had been proximat analysis (Weende methode), and the accumulation of soil mineral structure in the mound with X-Ray Methode (Analysis Program Cristallynity 2006). The result of the research indicated that there was significant difference between the composition of soil minerals in the mound of M. gilvus Hagen and the soil minerals around the mound. Analysis of the organic material in the mound building showed that the water was 98.33% and the solidity level was 1.67%, this solidity consisted of carbohydrate as much as 3.16%, ash as much as 4.19%, fat as much as 23.95%, protein as much as 39.52% and other minerals as much as 29.18%. The mound building in the minerals namely, SiO2 and Despujolsite, seemed to be carried in from the surroundings into the mound building. The other elements were obtained partly from the saliva, the fertile soil and the soil around the mound.
The Role of Bacteria in the Termites Intestine Macrotermes gilvus Hagen as a Biological Agent in the Degradation of Medical Mask Waste Niken Subekti; Retno Wulandari
Biosaintifika: Journal of Biology & Biology Education Vol 14, No 2 (2022): August 2022
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v14i2.37711

Abstract

The use of disposable medical masks during the Covid-19 pandemic can cause solid waste problems in the environment. The subterranean termite Macrotermes gilvus  Hagen has the potential to degrade medical mask waste due to the presence of microorganisms in its intestines. The purpose of this study was to analyze the effect of adding starter bacteria from the intestine of the subterranean termite M. gilvus  Hagen and the most optimal composting time in the degradation of medical mask waste according to SNI standards based on physical properties (color, smell, and texture), chemical properties (C-Organic content, N content, and C/N) compost. The results showed that the addition of bacterial starter from the subterranean termite intestine M. gilvus  Hagen with a concentration of 50% and a composting time of 5 weeks gave the best compost yield according to SNI No. 19-7030-2004 because it has a dark brown color, crumb texture, smells like soil, 20.22%  C-Organic content, 1.35% total N content, and 15.14% C/N content. This research can be recommended as an alternative solution for waste management using biological agents.
Karakteristik Populasi Rayap Tanah Coptotermes spp (Blattodea: Rhinotermitidae) dan Dampak Serangannya Niken Subekti
Biosaintifika: Journal of Biology & Biology Education Vol 2, No 2 (2010): September 2010
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v2i2.1158

Abstract

Termite are known to infest building in the tropics, but in their quest for cellulose they may also cause signifi cant damage to crops and trees. They become pest only when their natural habitat is altered in some way by humans. Subterranean termite Coptotermes spp has been known as the most economically important structural pest in Indonesia. Due tomorphological ambiguity, traditional identifi cation of Coptotermes spp. has always been diffi cult and unreliable. In economic point of view, economic loss due to termite attack always increases every year, and in the year 2000 it is estimated to reach 373 million US$. Moreover, the social as well as ecological impact caused by termite attack should also be considered. In the capital city of Jakarta, the subterranean termite attack on home buildings reaches around 55%; while in Surabaya (East Java) 36%; and in Semarang (Central Java) 41%. Meanwhile, in some other cities, the subterranean termite attack on home buildings reaches on the average of 20%. The presence of termites in a region can depend on various factors, such as soil and vegetation type. Climatic features andwater avaibility play an important part in termite survival. Daily and seasonal changes in these factors also affect termite distribution.Keywords: characteristics, climatic, Coptotermes spp, attack impact.
KETERTARIKAN LALAT BUAH BACTROCERA PADA EKSTRAK OLAHAN LIMBAH KAKAO BERPENGAWET Dyah Rini Indriyanti; Niken Subekti; Latifah -
Biosaintifika: Journal of Biology & Biology Education Vol 4, No 2 (2012): September 2012
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v4i2.2272

Abstract

Lalat buah Bactrocera spp. (Diptera: Tephritidae) merupakan salah satu hama pen ting menyerang tanaman buah-buahan dan sayuran. B. carambolae di laboratorium tertarik pada olahan limbah kakao. Hasil uji coba di lapangan belum memuaskan karena olahan limbah kakao mudah rusak. Tujuan penelitian ini mengkaji respon lalat buah Bactrocera yang diberi umpan ekstrak olahan limbah kakao berpenga wet. Pengawet yang digunakan yakni: Natrium klorida (NaCl), Natrium benzoat (C7H5NaO2) dan Potasium sorbat (C6H7KO2). Konsentrasi yang dipakai masing-masing pengawet 0,1%; 0,2% dan 0,3%. Pengamatan dilakukan selama satu ming gu. Hasil pengamatan menunjukkan bahwa daya tahan limbah yang diberi penga wet dan yang tidak dilihat secara secara fisik (warna dan tekstur) tidak berbeda nyata, namun ada perbedaan bau. Limbah yang tidak diberi pengawet ada kecen derungan baunya tidak sedap dibanding yang diberi pengawet. Hal ini yang mempengaruhi ketertarikan lalat terhadap olahan limbah kakao. Respon ketertarikan lalat Bactrocera terhadap olahan limbah kakao yang diberi pengawet berbeda antara satu dengan yang lain. Respon ketertarikan tertinggi Bactrocera cenderung pada olahan limbah kakao yang diberi pengawet Natrium klorida 0,3%, Potasium sorbat 0,2% dan Natrium benzoat 0,1%.The fruit fly Bactrocera spp. (Diptera: Tephritidae) is one of the important pests attacking crops of fruits and vegetables. In the laboratory, B. carambolae was attracted by the processed cocoa waste. The results of field trials have not been satisfactory yet, because the processed cocoa waste was easily damaged. The purpose of the study wast to examine the response of Bactrocera to the bait made of processed cocoa extract waste containing preservatives. The preservatives used were: Sodium chloride (NaCl), sodium benzoate (C7H5NaO2) and potassium sorbate (C6H7KO2). The concentration of each preservative was 0.1%; 0.2% and 0.3%. A one-week observation was made. The result showed that there was no significant difference on the durability of the preserved waste and the non-preserved waste. This can be seen from the physical properties (color and texture). However, there was difference in odor. The non-preserved waste tended to produce unpleasant smell than the preserved waste. This odor affected the capability to attract the flies to the processed cocoa waste. The Bactrocera was highly responsive to the waste containing preservative 0.3% sodium chloride, followed by 0.2% potassium sorbate and 0.1% sodium benzoate.
Biodiversity of Termites and Damage Building in Semarang, Indonesia Niken Subekti; Bambang Priyono; Afrin Nur Aisyah
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 1 (2018): April 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v10i1.12832

Abstract

Termites cause a lot of damage and big losses for building components, especially those made of wood. High population growth and rapid infrastructure development in Semarang city affect the natural habitats of termites. This phenomenon changes the termites' behavior of foraging in buildings. Semarang city has humidity, temperature, and altitude that allows termites to live and breed well. The purpose of this study was to determine the types of termites living in housing in Semarang city as well as the level of attacks on housing. This research was conducted in nine housing in Semarang City. The research was carried out with two methods: building inspection and wood-feeding method by using Pinus mercusii wood measures 2 cm x 2 cm x 46 cm. The results found four types of termites that attack wood feeds namely Macrotermes gilvus, Microtermes inspiratus, Odontotermes javanicus, Coptotermes curvignathus and Cryptotermes sp.. Based on interviews and building inspection, it was known that the condition of the building in the category of "moderate" was occupying the most position (74.44%), good (17.78%) and lightly damaged (7.78%). From the causes of damage to building components, it can be concluded that the level of termite attack against damage to recidential buildings in Semarang city 44.58%. Cross-tabulation analysis of Chi-Square shows that there is a correlation between age and treatment with damage to the building. Futher, the finding can be used as baseline information for further scientific investigation for effective termites control on residential building components.
Characteristics of Cells from Five Exotic Bamboos after Drywood Termites Incisitermes minor (Hagen) Attack Niken Subekti; Tsuyoshi Yoshimura
Biosaintifika: Journal of Biology & Biology Education Vol 7, No 2 (2015): September 2015
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v7i2.3952

Abstract

This study examined the relationship between and the characteristics of five bamboos exotic in the cell walls. For this purpose, the bamboosexotic from Indonesia  were separated into cells after drywood termites Incisitermes minor (Hagen) attack. SEM observations revealed that bamboos cells. Moreover, SEM analysis showed that the cellulose isolated from parenchyma cells. These results suggest that all the cellulose microfibrils in five bamboos different characteristics of cell function after drywood termite attack.Penelitian ini menguji hubungan antara karakteristik dan lima bambu eksotis di dinding sel. Untuk tujuan ini, bamboosexotic dari Indonesia dipisahkan ke dalam sel setelah rayap Drywood Incisitermes minor (Hagen) serangan. Pengamatan SEM menunjukkan bahwa sel-sel bambu. Selain itu, analisis SEM menunjukkan bahwa selulosa yang diisolasi dari sel parenkim. Hasil ini menunjukkan bahwa semua brils fi selulosa mikro di lima bambu karakteristik yang berbeda dari fungsi sel setelah serangan Rayap Kayu Kering.
Co-Authors - Kinaseh, - A.A. Ketut Agung Cahyawan W Aflah, Ulin Nikmatul Afniyati, Nur Afniyati, Nur Afrin Nur Aisyah Aisyah, Afrin Nur Alimah, Alimah Ani Rusilowati Anifatussholihah, Anifatussholihah Anifatussholihah, Anifatussholihah Anita Fadhila Anita Fadhila Aprilia Findayani Aprilia Findayani Ari Yuniastuti Ariza Naila Safufia, Ariza Naila Atunnisa, Rifa' Bambang Priyono Bambang Priyono Chamidah, Isni Nurul Chamidah, Isni Nurul Dewi Liesnoor Setyowati Dewi Susilowati Dewi, Mutiarani Kartika Dodi Nandika Dwi Astuti Dian Kurniasari, Dwi Astuti Dian Dyah Rini Indriyanti Fahrur Rozi Heru Setyanto Hilda Afiani, Hilda Indirasari, Indirasari Juhadi Juhadi Latifah - Latifah - Lisdiana Lisdiana Melinda, Aura Tirsa Miranita Khusniati Muhammad Taufiq Nina Oktarina Ning Setiati Novi Ratna Dewi Nur Rahayu Utami Priyantini Widiyaningrum Purwaningsih - Putri Oktaviani Putri, Pinandhita Putri, Pinandhita R. Susanti, R. Susanti Retno Wulandari Rifa' Atunnisa Rifa'atunnisa, Rifa'atunnisa Risa Dwita Hardiyanto Saniaturrohmah Saniaturrohmah Saniaturrohmah Saniaturrohmah Saniaturrohmah, Saniaturrohmah Septiyaningsih, Tri Septiyaningsih, Tri Setyanto, Heru Shinta Hedy Cahyaningrum Shinta Hedy Cahyanningrum Siti Alimah Siti Harnina Bintari Siti Khalimah Sonika Maulana Sonika Maulana Sri Mulyani Endang Susilowati, Sri Mulyani Endang Surjono Surjokusumo Syaiful Anwar Takehiro, Hayashi Talitha Widiatningrum TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Tetsuo, Isozaki Tsuyoshi Yoshimura Tsuyoshi Yoshimura Tuswadi, Tuswadi Tyas Agung Pribadi, Tyas Agung Yoshinori, Fujikawa Zahra, Citra Anisah