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Potensi selokan Mataram: ulasan keadaan fisik dan kualitas airnya Pipin Kusumawati; Achmad Andi Rif'an; Eko Sugiarto
Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktek dalam Bidang Pendidikan dan Ilmu Geografi Vol 24, No 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (780.083 KB) | DOI: 10.17977/um017v24i22019p108

Abstract

The Mataram Canal is a historical inscription of the policy of Mataram's King which had saved thousands of Yogyakarta residents from the obligation to become Romusha during the Japanese colonialism. The inscription still stands today and has widely used for agricultural irrigation. Although it has a long interesting history and supported by beautiful natural scenery, this place has not been managed for tourism purposes. For this reason, this research is an initial study that will review the physical condition of Mataram Canal and the quality of the water. The Mataram Canal landscape is quite beautiful but requires a lot of repairs in several parts. Water quality also showed that the water does not meet favorable standards caused by sampling carried out in the rainy season. Thus the need for research in the dry season which could be used as a reference in determining the feasibility of Mataram Canal as a water tourism attraction.Selokan Mataram adalah prasasti sejarah kebijakan Raja Mataram yang telah menyelamatkan ribuan penduduk Yogyakarta dari kewajiban menjadi Romusha pada masa penjajahan Jepang. Prasasti tersebut masih berdiri hingga saat ini dan dimanfaatkan secara luas untuk pengairan pertanian. Meskipun memiliki sejarah yang panjang dan menarik serta didukung dengan potensi alam yang cukup indah, tempat ini kurang dimaksimalkan untuk tujuan wisata. Untuk itu penelitian ini adalah penelitian awal yang akan mengulas keadaan fisik Selokan Mataram dan kualitas airnya. Lanskap Selokan Mataram dinilai cukup indah tetapi membutuhkan banyak perbaikan di beberapa bagian. Kualitas air juga menunjukkan kualitas air yang tidak memenuhi standar yang kemungkinan disebabkan oleh pengambilan sampel yang dilakukan pada musim penghujan. Dengan demikian perlu adanya penelitian lanjutan yang membandingkan kualitas air Selokan Mataram pada musim kemarau sehingga dapat dijadikan acuan dalam penentuan kelayakan Selokan Mataram sebagai wahana wisata tirta.DOI: http://dx.doi.org/10.17977/um017v24i22019p108
Angkringan Kopi Joss Sebagai Daya Tarik Wisata Gastronomi Kota Yogyakarta Dan Kondisinya Akibat Pandemi Covid-19 Haritsah Kusumaningrum; Dyah Wahyuning Tyas; Pipin Kusumawati
Khasanah Ilmu - Jurnal Pariwisata Dan Budaya Vol 13, No 1 (2022): Jurnal Khasanah Ilmu - Maret 2022
Publisher : Universitas Bina Sarana Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.289 KB) | DOI: 10.31294/khi.v13i1.11317

Abstract

Salah satu budaya kuliner yang lekat dengan mahasiswa dan Yogyakarta adalah warung angkringan. Angkringan berasal dari bahasa jawa "angkring" yang berarti duduk santai dengan kaki di angkat di kursi (nangkring). Salah satu minuman yang khas di angkringan Kota Yogyakarta ini adalah Kopi Joss. Penyajian kopi hitam dengan memasukkan bara arang ke dalamnya dan menimbulkan bunyi “jooosss”, sehingga kopi ini terkenal dengan nama kopi joss. Munculnya wabah Covid-19 telah memberikan dampak buruk bagi usaha angkringan di Yogyakarta. Penelitian ini bertujuan untuk mengetahui faktor-faktor apa saja yang mempengaruhi daya tarik wisata gastronomi angkringan kopi joss di Kota Yogyakarta dan untuk mengetahui mitos terkait manfaat kopi joss. Survey lapangan dilakukan selama masa new normal. Penelitian ini bersifat deskriptif kuantitatif dengan pengolahan data primer dan sekunder. Data diperoleh melalui survey, wawancara, dan observasi. Alat analisis statistik yang digunakan untuk menjawab rumusan masalah adalah analisis regresi yang didukung dengan uji validitas dan reliabilitas. Hasil temuan dari penelitian ini terdapat lima faktor yang mempengaruhi minat wisata gastronomi angkringan kopi joss yaitu daya tarik, minuman, saran, julukan, dan Covid-19. Temuan kedua membuktikan bahwa mitos khasiat penambahan arang tidak hanya bermanfaat bagi tubuh tetapi wisatawan juga menyadari akan bahaya serta adanya kandungan senyawa karsinogenik pada arang yang dimasukkan dalam kopi joss. Hal itu tidak mengurangi minat wisatawan untuk menikmati kopi joss.
Nano-calcium Powder Properties from Six Commercial Fish Bone Waste in Indonesia Pipin Kusumawati; Priyanto Triwitono; Sri Anggrahini; Yudi Pranoto
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 17, No 1 (2022): May 2022
Publisher : Research and Development Center for Marine and Fisheries Product Processing and Biotechnol

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.601

Abstract

Low daily calcium intake in Asia, especially in Indonesia, is still a serious problem. The abundant fish bone waste from the fishery fillet industries in Indonesia,  can be employed as an alternative source of calcium to meet daily calcium needs. This research aimed to determine which of the six fish species (tilapia, catfish, grouper, snapper, tuna, kingfish mackerel) produces the best quality and the most cost-effective nano-calcium powder for a recommendation to the stakeholders. The calcium was extracted using an alkali treatment. The properties of the produced nano-calcium powders were analyzed for: proximate composition, calcium and phosphorus levels, color brightness level, XRD, FTIR, particle size, and SEM-EDX image analysis. The tilapia bone had the finest particle size of calcium (87.37 nm), while the grouper bone had the biggest particle size (281.4 nm). The brightness of all yields varied from 83.83 (beige-kingfish mackerel) to 90.64 (white-tilapia). The average calcium content from EDX analysis varied from 21.51% (snapper) to 34.37% (grouper). The average phosphorus levels ranged from 10.73% (kingfish mackerel) to 15.99% (grouper). The EDX Ca/P molar ratio was 1.41-1.66 across all samples. The FTIR spectra showed that all samples contained PO, CH, CO, NH, and OH groups. The XRD spectra pattern determined that the two main components of the fish bone nano-calcium powder were 90% hydroxyapatite and halite. All fish bone samples have the potential to be used as raw material for nano-sized calcium. However, grouper bone with the highest calcium content and the highest nano-calcium yield was the best choice for further study.
Autoclaving and Alkaline Hydrolysis Effects on the Particle Size and Solubility of Grouper (Epinephelus sp.) Nano-calcium Powder in In Vitro Gastrointestinal Tract Simulation Pipin Kusumawati; Priyanto Triwitono; Sri Anggrahini; Yudi Pranoto
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 2 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v14i2.36261

Abstract

Highlight Research Autoclaving for 3x3 hours followed by alkaline hydrolysis (3x3AH) may lower nano-calcium particle size into 47.47 nm 3x3AH sample contain 30.73% calcium and 18.37% phosphorus 3x3AH sample created the best calcium solubility (26.14 %) in comparison to synthesized CaCO3 (14.34 %) Grouper nano-calcium powder includes trace quantities of organic content, such as protein and fat, which enhance calcium's solubility.   Abstract Fish bone nano-calcium production may solve two challenges, providing calcium for lactose-intolerant people and recycling bone waste. Fish bone autoclaving prior to extraction reduces fat, denatures collagen, and softens bones but only few researches have compared autoclaving duration with nano-calcium product quality, particle size, and its solubility in in vitro testing. This study studied the influence of autoclaving duration followed by alkaline hydrolysis on nano-calcium characteristics to enhance calcium solubility in in vitro gastrointestinal simulation experiments. The dried grouper (Epinephelus sp.) bone was divided into four groups: 0A (no autoclaving), 3A (3 h autoclaving), 2x3A (double cycle for 3 h autoclaving), and 3x3A (triple cycle for 3 h autoclaving). Each group was followed by alkaline hydrolysis, designated as 0AH, 3AH, 2x3AH, and 3x3AH. The results showed that autoclaving for 3x3 hours followed by alkaline hydrolysis resulted in lowest nano-calcium particle size of 47.47 nm consisting of 30.73% calcium and 18.37% phosphorous. 3x3AH sample created the best calcium solubility (26.14%) in comparison to synthesized CaCO3 (14.34%). In contrast to synthetic CaCO3, grouper nano-calcium powder includes trace quantities of organic contents, such as protein and fat, which enhance calcium solubility. In vivo research should be established to study the bioavailability and influence of grouper nano-calcium powder on bone density.