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Karakterisasi Biochar dari Ampas Tebu dan Kemampuan Penyerapan Nitrogen Sebagai Amelioran Pada Tanah Gambut Secara In Vitro Warsidah Warsidah; Suparnawati Suparnawati; Anthoni Batahan Aritonang; Puji Ardiningsih; Asri Mulya Ashari; Mega Sari Juane Sofiana
Innofarm:Jurnal Inovasi Pertanian Vol. 23 No. 1 (2021): Innofarm : Jurnal Inovasi Pertanian
Publisher : FAKULTAS PERTANIAN UNIVERSITAS SLAMET RIYADI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33061/innofarm.v23i1.5604

Abstract

Research has been carried out on the characterization of biochar pores produced from bagasse through a pyrolysis process at a temperature of 110oC for 4 hours, using the Scaning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX) method. The biochar of sugarcane pulp produced is then tested for its ability to absorb nitrogen content (% N-total), with the source of N is urea fertilizer through the Kjedhal method based on SNI (2801: 2010), and the source of nitrogen from a solution of ammonium sulfate (NH4)2SO4 by the titrimetric method. The SEM measurement results showed that the biochar pores were uniform and micro-sized, while the peat pores were macro in size and irregular. EDX results show that biochar is composed of 100% carbon, while peat soil consists of carbon compounds (C), Oxygen (O) Silica (Si) and Aluminum (Al). Both of biochar and peat have moisture content of 0.38% and 11.79%, ash content of 2.42% AND 24.44%, volatile content of 0.53% and 5.23% of bound or fixed carbon (cf) of 97.02% and 58.53%. The results of the biochar capacity test applied to peat soils can increase the pH of the peat from 5 to 6.5 with the ability to absorb N-total from urea (NH2)2CO and N-total fertilizer sources from ammonium sulfate (NH4)2SO4 solution of 38% - 66%, and 56.5% -84.5%.
AKTIVITAS ANTIBAKTERI DARI FUNGI ENDOFIT Caulerpa racemosa ASAL PERAIRAN PULAU LEMUKUTAN (ANTIBACTERIAL ACTIVITY FROM ENDOPHYTIC FUNGI Caulerpa racemosa ORIGIN IN LEMUKUTAN ISLAN WATERS) Melia Trianasta; Warsidah Warsidah; Mega Sari Juane Sofiana
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 3 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.672 KB) | DOI: 10.26418/indonesian.v4i3.48830

Abstract

Green macroalgae Caulerpa racemosa from the waters of Lemukutan Island was isolated to obtain its endophyte fungi. Endophyte fungi were explored to determine their potential as antibacterial. Isolation of endophyte fungi was carried out by dilution method using PDA media. Endophyte fungi with different morphology were obtained as many as 4 isolates, named CRF1, CRF2, CRF3 and CRF4. Antibacterial activity testing was carried out by agar diffusion method. Endophyte fungi isolate CRF3 showed the best activity against Escherichia coli bacteria while CRF2 isolate showed the best activity against Staphylococcus aureus with inhibition zone diameters of 15.83 mm and 11.99 mm, respectively. Keywords:Endophyte Fungi, Caulerpa racemosa, Antibacterial, Lemukutan
PRESISI DAN AKURASI KROMATOGRAFI GAS DALAM PENETAPAN KADAR ASAM PROPIONAT DALAM PRODUKSI BAKERI (PRECISION AND ACCURACY OF GAS CHROMATOGRAPHY FOR DETERMINATION OF PROPIONIC ACID LEVELS IN BAKERY PRODUCT) Nasril Fuad Hasan; Warsidah Warsidah; Gusrizal Gusrizal
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1311.02 KB) | DOI: 10.26418/indonesian.v4i2.45415

Abstract

Percission and accurate gas chromatographic method for determination of propionic acid in bakery products was developed. Bakery productswere directly extraction with ethyl acetat and phosphoric acid used for acidic. The extract was injected directly to gas chromatographic using butyric acid as internal standard. Calibration curve propionic acid range 25 – 1000 µg/mL. Coefissien of variation (CV) rates for spiked bakery produtcs were 1,36% and 99,81% (range 96,32 – 103,61%) for accuracy at ± 1000 mg/kg propionic acid, Limit detection (LoD) and limit quantitation (LoQ) by this method were 333,6537 mg/Kg and 635,5818 mg/Kg. Burger, hot dog, and sandwich buns from a local factory at Pontianak were analyzed and respectively rates less than the limit permitted by Indonesian regulations.
ANALISIS PROKSIMAT, MINERAL ESENSIAL, DAN CEMARAN LOGAM BERAT PADA TERIPANG Acaudina molpadioides DARI PERAIRAN PALOH KALIMANTAN BARAT Ikha Safitri; Shifa Helena; Warsidah Warsidah; Mega Sari Juane Sofiana
JFMR (Journal of Fisheries and Marine Research) Vol 5, No 3 (2021): JFMR VOL 5 NO.3
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.03.15

Abstract

Acaudina molpadioides was found along the coast of Paloh, Sambas Regency, West Kalimantan in recent months. This sea cucumber known as one of the typical foods of the coastal community of Karimun. This species has similarities with Paracaudina sp. belonging to the Caudinidae family. Proximate content, essential minerals and heavy metal contamination have never been carried out on A. molpadioides from Paloh waters. Nutrition in this biota will varies in different places. It is due to different environmental influences in terms of physical and chemical parameters. Proximate analysis were carried out. They were content of water, ash, protein and fat. The essential minerals analyzed from the samples were zinc (Zn), copper (Cu), iron (Fe) and manganese (Mn) using Atomic Absorption Spectrophotometer (AAS). Heavy metal contamination of Pb and Cd was also measured by AAS. Moisture, ash, fat and protein content of A. molpadioides were 36.23%; 7.61%; 0.004% and 3.35% respectively. The essential minerals detected in A. molpadioides were Zn (0.054 ppm), Fe (3.35 ppm) and Mn (0.150). Heavy metal contamination of Pb and Cd was not detected from A. molpadioides samples.
Sosialisasi Konsumsi Hasil Laut sebagai Pangan Fungsional dalam Usaha Peningkatan Sistem Imunitas Tubuh selama Masa Pandemi Covid-19 di Kota Pontianak, Kalimantan Barat Agus Yuliono; Warsidah Warsidah; Mega Sari Juane Sofiana; Arie A. Kushadiwijayanto; Apriansyah Apriansyah; Yusuf A. Nurrahman; Anthoni B. Aritonang
Community Engagement and Emergence Journal (CEEJ) Vol. 2 No. 2 (2021): Community Engagement and Emergence Journal (CEEJ)
Publisher : Yayasan Riset dan Pengembangan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/ceej.v2i2.195

Abstract

Virus Covid-19 telah menyebar secara luas di seluruh dunia dan berdampak pada berbagai sektor. Salah satu kebijakan pemerintah untuk menanggulangi penyebaran virus ini adalah dengan pembatasan aktivitas dan penerapan 3M (menjaga jarak, menggunakan masker dan mencuci tangan) dalam beraktivitas. Hal lainnya yang dapat dilakukan adalah dengan meningkatkan imunitas tubuh dengan mengkonsumsi makanan yang bergizi, salah satunya adalah produk hasil laut. Informasi ini disosialisasikan kepada masyarakat, khususnya perwakilan guru dan siswa SMA se Kota Pontianak, Kalimantan Barat dengan jumlah peserta 256 orang. Sosialisasi ini dilakukan melalui program PKM PS Ilmu Kelautan , FMIPA Universitas Tanjungpura dalam bentuk webinar dan disertai dengan pre-test dan post-test sebagai bentuk evaluasi. Salah satu hasil laut yang mengadung nutrisi yang tinggi adalah ikan. Ikan merupakan bahan pangan fungsional yang mengandung protein, vitamin, minesal, asam lemak omega-3 (PUFA), EPA, DHA, asam amino taurin. Ikan dengan kandungan gizi yang tinggi dan mudah diperoleh oleh masyarakat diharapkan dapat meningkatkan ketahanan gizi dan imunitas tubuh. Pemahaman peserta terkait materi konsumsi hasil laut sebagai pangan peningkat imunitas tubuh dengan indikator hasil kuisioner pre-test dan post-test meningkat dari 60-70% menjadi 90-100%. Respon dan antusiasme peserta tinggi yang ditunjukkan oleh peserta dalam bertanya dan menjawab pertanyaan yang diberikan oleh pemateri.
PENINGKATAN KEMAMPUAN LITERASI DAN ADAPTASI TEKNOLOGI MELALUI PROGRAM KAMPUS MENGAJAR DI SEKOLAH DASAR No 5 SEJAJAH KABUPATEN BENGKAYANG Warsidah Warsidah; Amriani Amir; Riza Linda; Mega Sari Juane Sofiana; Neva Satyahadewi
JURNAL PENDIDIKAN DASAR PERKHASA: Jurnal Penelitian Pendidikan Dasar Vol 8, No 2 (2022): Jurnal Pendidikan Dasar Perkhasa: Jurnal Penelitian Pendidikan Dasar
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpdp.v8i2.1959

Abstract

Teaching Campus is one of the main products of the Merdeka Learning Program Merdeka Campus which is a policy of the Minister of Education and Culture in an effort to encourage students to master various scientific fields in preparation for the world of work. The purpose of this campus teaching activity is to produce students with character, namely critical and creative as well as collaborative and skilled in every situation. The method used in this research is descriptive method, by describing all data obtained in research activities including primary, secondary and other supporting data to be analyzed and narrated in a structured, factual and systematic manner. Primary data was obtained through interviews with KM2 team students, students, teachers and principals as well as parents of SDN No 05 Sejajah students, while secondary data was based on literature review or based on references relevant to this research topic. The results of the research from the KM 2 activity which lasted for 20 weeks effectively showed that the role of the students participating in KM 2 had a positive impact on improving the quality of SDN No 05 Sejajah schools, especially in literacy and numeracy for students as well as technology adaptation and administrative order for school teachers. In addition, the motivation to go to school for the students of SDN No 05 Sejajah generally increased, indicated by the diligence and perseverance of the students attending and being in the classroom until the end of the lesson.Keywords: descriptive, technological adaptation, literacy, numeracy, SDN 05 Sejajah
Transformation of Rucah Fish Processing Into Nuggets in Setapuk Besar Village Singkawang City Sukal Minsas; Warsidah Warsidah; Mega Sari Juane Sofiana; Yusuf Arief Nurrahman; Arie Antasarie Kushadiwijayanto; Dwi Imam Prayitno; Sy Irwan Nurdiansyah
International Journal of Public Devotion Vol 5, No 2 (2022): August - December 2022
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/ijpd.v5i2.3646

Abstract

Fish nugget is a type of fishery product processing that has a long shelf life at cold or frozen temperatures. The presentation is more practical, tastes more savory and is liked by children and adolescents, so it can be used to meet the nutritional needs of the family. The implementation of this PKM activity aims to provide training to the people of Setapuk Besar, Singkawang City, in processing trash fish fisheries waste into nuggets, with the addition of Eucheuma cottonii pulp as a partial substitute for wheat flour. This activity is carried out offline while still paying attention to and strictly implementing health protocols such as wearing masks and using hand sanitizers. The activity was attended by 20 participants consisting of members of the Setapuk Besar Village Family Welfare Development (PKK) divided into 3 working groups. This PKM activity was carried out using the lecture method followed by a demonstration of making nuggets. Monitoring and evaluation of the activities carried out during the activity showed the ability of the 3 groups of PKK mothers to process trash fish waste into frozen food nuggets based on variations in the concentration of 0, 25 and 50 g E. cottoni pulp. The results of the nugget-making activity for PKK women in Setapuk Besar village, showed that the addition of 0.25 g of E. cottoni pulp provided a better consistency of the dough and texture of processed nuggets, as well as a more savory taste.
Inhibition Activity Alpha-Glucosidase Enzyme And Toxicity From Ethanol Extract Of Caulerpa Seaweed Anisa Mulyani; Warsidah Warsidah; Mega Sari Juane Sofiana; Sukal Minsas; Riza Linda; Ikha Safitri
Barakuda'45 Vol 4 No 2 (2022): Edisi November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v4i2.278

Abstract

Caulerpa is a green macroalgae found on Lemukutan Island, West Kalimantan. Caulerpa contains bioactive compounds that have potential to inhibit the alpha-glucosidase enzyme for people with diabetes mellitus. Inhibition of the alpha-glucosidase enzyme will have an impact on delaying glucose absorption. In addition, it is necessary to carry out a toxicity test to detect toxic effects and assess safety in the use of compounds. Therefore, the purpose of this study was to determine the inhibitory activity of the alpha-glucosidase enzyme and the toxicity of the ethanolic extract of Caulerpa seaweed in Lemukutan Island waters. Identification of secondary metabolites was determined from phytochemical tests. Inhibitory activity of the alpha-glucosidase enzyme determined by using enzymatic reactions, while the toxicity by method of BSLT. The showed that the percentage yield of Caulerpa ethanol extract was 3.66%. The content of bioactive compounds in the ethanolic extract of Caulerpa contains positive alkaloids, flavonoids, saponins, tannins, steroids, and phenolics. The inhibitory of the alpha-glucosidase enzyme had the highest percentage of inhibition with a concentration of 300 ppm indicating a percent inhibition of 16.85%. Toxicity obtained LC50 value of 598.19 ppm which is classified as low toxic.
Physical Chemical Characterization, Determination of Antioxidant Activity and Phytochemical Screening of Gambir Claw Herbal Tea (Uncaria gambir) Lucky Hartanti; Asri Mulya Ashari; Rita Kurnia Apindiaty; Gusti eva Tavita; Rafdinal Rafdinal; Desriani Lestari; Warsidah Warsidah
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i4.4334

Abstract

Uncaria gambir is a member of Rubiaceae family. Information related to antioxidants and the use of this plant in the food and cosmetic industry has been widely reported. This study aims to determine the physicochemical properties, phytochemical content and antioxidant activity of herbal tea made from gambir claw, which was collected from the Pontianak City area of ​​West Kalimantan. Determination of physicochemical properties is based on measuring the parameters of pH, water content, ash content and organoleptic including taste, odor and color when dissolved in water. Phytochemical screening was carried out using specific reagents to determine the presence of flavonoid compounds, tannins, alkaloids and saponins. Antioxidant activity was determined using the free radical scavenging method 2,2-diphenyl-1-picrylhydrazyl (DPPH). From the results of the measurement of the physical and chemical properties of gambir claw herbal tea, the pH, ash content, moisture content and powder conditions met the requirements of SNI No 3836 of 2013, phytochemical screening showed positive results for flavonoid and tannin compounds, and antioxidant activity was obtained at 88,398 ppm, classified as a strong antioxidant.  
Potential Antioxidant Activity of Tropical Brown Macroalgae Turbinaria Ethanol Extract from Kabung Island West Kalimantan Mega Sari Juane Sofiana; Apriansyah Apriansyah; Bambang Kurniadi; Warsidah Warsidah; Rita Kurnia Apindiati; Ikha Safitri; Syarif Irwan Nurdiansyah
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i4.4385

Abstract

Naturally, the human body has tolerance to free radical attacks. However, the natural antioxidant ability will decrease when exposure to free radicals from within and outside the body occurs intensively. Antioxidants play potential preventive role to protect the body from damage associated with oxidative stress by free radicals. One of the potential marine resources used as an antioxidant is macroalgae. Turbinaria is widely distributed in tropical waters of Indonesia, including West Kalimantan. This genus produces secondary metabolites with several biological activities. This genus abundantly grows in Kabung Island. However, it has not been used by the local community, even tends to be considered as a weed that disturbs others marine biota. This study aimed to evaluate the potential antioxidant activity of tropical brown macroalgae Turbinaria ethanol extract from Kabung Island, West Kalimantan. antioxidant activity was evaluated using the DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenger method with UV-vis spectrophotometer. The result showed that the ethanolic extract had a high of potential antioxidant activity which IC50 was 87.31 mg/L and it was classified into strong antioxidant potential.