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All Journal Jurnal Sains dan Teknologi Jurnal Pendidikan Kimia, Fisika dan Biologi
Zihan Zahriani Batubara
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Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Education Physics Transportation

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Pengaruh Pemberian Teh Hitam Terhadap Pertumbuhan Scoby Dan Mutu Fermentasi Kombucha Artika Rindiani; Gita Syahri Ramadhani; Najwa Liliana; Nita Maya Sari Pane; Zihan Zahriani Batubara; Adelia Febriyossa; Ahmad Shafwan S Pulungan
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 1 No. 4 (2025): April - Juni
Publisher : GLOBAL SCIENTS PUBLISHER

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Abstract

Kombucha is a fermented beverage that has been gaining popularity due to its health benefits, such as its antioxidant and probiotic content. One of the main ingredients in making kombucha is tea, and the type of tea used significantly affects the quality of the final product. This study aimed to determine the effect of using black tea on the growth of SCOBY (Symbiotic Culture of Bacteria and Yeast) and the organoleptic quality of kombucha. The research was conducted experimentally at the Microbiology Laboratory of Universitas Negeri Medan in April–May 2025. Kombucha was fermented for six days with a black tea solution to which sugar and a starter culture were added. The parameters observed included SCOBY growth (thickness and diameter) and organoleptic quality (taste, aroma, and color), which were assessed by ten panelists. The results showed an increase in SCOBY thickness from 0.5 cm to 0.8 cm and diameter from 12 cm to 15 cm. Organoleptic tests indicated that black tea kombucha tends to have a sour taste, a moderately strong aroma, and a yellowish-brown to brown color. Based on the research results, it can be concluded that black tea positively influences SCOBY growth and produces kombucha with good sensory quality that is acceptable to the panelists.
Penerapan Prinsip Bioetika dalam Pemeriksaan Kualitas Air (Pb dan Cd) dengan Metode AAS (Atomic Absorption Spectro-Photometer): (Studi Kasus di UPT Laboratorium Pengujian Mutu dan Keamanan Pangan Kota Medan) Nita Maya Sari Pane; Zihan Zahriani Batubara; Ahmad Shafwan Pulungan; Nurbaity Situmorang
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 2 (2025): Maret : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i2.225

Abstract

Current water safety issues in society are very diverse. Water quality safety issues are closely related to the bioethics of water testing, because water testing involves protecting human health and the environment. Water quality testing is an important part of ensuring that the water consumed is safe for human health. The purpose of this study was to evaluate the application of bioethical principles in water quality testing (Pb and Cd). This study was conducted in March 2025 at the UPT Food Security Laboratory of Medan City. The data analysis used in this study used qualitative descriptive methods to see the pattern of observation responses. The results of the study showed that in the bioethical aspect of sample testing, analysts who conducted the testing had implemented bioethics or SOPs that apply in food quality and safety testing laboratories. In conducting water testing for lead and cadmium examination, the procedures used were in accordance with applicable requirements using testing procedures from SNI (Indonesian National Standard).
Co-Authors Adelia Febriyossa Ahmad Shafwan Pulungan Ahmad Shafwan S Pulungan Artika Rindiani Gita Syahri Ramadhani Najwa Liliana Nita Maya Sari Pane Nurbaity Situmorang