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All Journal Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Jurnal Biodjati
Hanif Syafrian Purnama
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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PERBANDINGAN PERBEDAAN KONSENTRASI RAGI TERHADAP MUTU DONAT KENTANG Ghaida Nurin Atifah; Hanif Syafrian Purnama; Khodijah Khoirun Nisa; Kusnadi Kusnadi; Peristiwati Peristiwati
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 10 No 1 (2023): Scientific Journal of Food Technology (Maret)
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITP.2023.v10.i01.p12

Abstract

Donuts are processed flour products made from a combination of several ingredients such as wheat flour, sugar, salt, butter, eggs, water, and yeast as a fermentation agent, these ingredients are mixed with potatoes as an additional raw material. The yeast will grow by converting the sugar into carbon dioxide gas and this gaseous-flavored compound is what makes the donuts rise. The method used in this study was an experimental laboratory method to test the effect of different yeast concentrations on the organoleptic characteristics of potato donuts. The three concentrations of yeast used were 1.4% (w/w), 1.8% (w/w), and 2.2% (w/w). Yeast affected all parameters, taste, color, aroma, and texture of the best donuts in the first treatment with a yeast concentration of 1.4% and the highest organoleptic value.
Assessing the Ecological Status of the Curug Tilu Leuwi Opat Waterfall Using Macroinvertebrates and Physicochemical Parameters Hanif Syafrian Purnama; Tati Suryati Syamsudin; Dian Rosleine
Jurnal Biodjati Vol 10 No 2 (2025): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v10i2.49080

Abstract

Anthropogenic activities increasingly threaten freshwater availability. The Curug Tilu Leuwi Opat waterfall in the Cimahi River, an important water source for surrounding communities and a popular tourist site, requires an ecological assessment to support effective water management. This study aims to provide an initial overview of the ecological status of waters through an integrative approach that combines benthic macroinvertebrates and physicochemical parameters. Sampling was conducted in two waterfall streams, Kacapi and Aseupan, which are part of the Curug Tilu Leuwi Opat waterfall system. Physicochemical parameters measured included temperature, flow velocity, pH, dissolved oxygen, conductivity, and total dissolved solids. Benthic macroinvertebrates were collected using a Surber net and identified to the lowest feasible taxonomic level, typically morphospecies with some taxa at the family level, and subsequently analyzed using the Shannon–Wiener index, Simpson’s dominance, the Family Biotic Index (FBI), and Canonical Correspondence Analysis. Results indicated excellent water quality (FBI at Kacapi = 4.17; Aseupan = 4.24), driven by the presence of pollution-sensitive taxa from Leptophlebiidae, Tipulidae, and Perlidae, while the slightly higher FBI at Aseupan reflected several moderately tolerant families such as Physidae and Simuliidae. Benthic macroinvertebrate diversity was moderate with no dominant species, indicating stable community structure. Most measured parameters that met established standards met Class I criteria, while dissolved oxygen, conductivity, and flow velocity emerged as the dominant variables shaping community structure. Overall, the aquatic ecological status was excellent, highlighting the role of aquatic biodiversity as a scientific basis for sustainable environmental management
Co-Authors Dian Rosleine Ghaida Nurin Atifah Khodijah Khoirun Nisa Kusnadi Kusnadi Peristiwati, Peristiwati Tati Suryati Syamsudin