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Wijaya, I Made Mahaputra
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Agriculture, Biological Sciences & Forestry Chemistry Immunology & microbiology Industrial & Manufacturing Engineering

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Karakteristik Teh Herbal Bubuk Bunga Wijaya Kusuma (Epiphyllum Oxypetalum) Dengan Variasi Suhu Pengeringan Pramesti, Rika Charina Dyah; Anggreni, A. A Made Dewi; Wijaya, I Made Mahaputra
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 13 No 2 (2025): Juni
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2025.v13.i02.p02

Abstract

Wijaya kusuma flower contains phytochemical compounds including saponins, glycosides, steroids, terpenoids, phenolic compounds, resins, and tannins. . This study aims to find out the effect of drying temperature variations on the characteristics of wijaya kusuma flower powder herbal tea and determine the drying temperature that can produce wijaya kusuma flower powder herbal tea with the best characteristics. This study uses a Group Random Design with one factor, namely the variation of drying temperature consisting of 5 levels, namely 50°C, 60°C, 70°C, 80°C, and 90°C. The data produced was analyzed using Analysis of variance (ANOVA), if the treatment given showed an influence on the variables tested, then a further test was carried out BNJ (Honest Real Difference) at the level of 5%. The variables measured included yield, extract content in water, total phenols, total flavonoids, antioxidant activity, sensory tests, and antibacterial activity. The results showed that the variation in drying temperature had a significant influence on all the variables observed. The best treatment based on the effectiveness index test was a temperature of 50°C with the following characteristics: yield 15.67 ± 3.79%, extract content in water 6,39 ± 0,01%, total phenol 784.7±91.18 mg GAE/g, total flavonoids 48.83±2.08 mg QE/g, antioxidant activity 37.04 ± 6.89 ppm, antibacterial activity of Staphylococcus aureus 27.14 ± 2.28 mm, and overall acceptance of the panelists liked with a score of 3.35±0.186.
Nira Kelapa Dipasteurisasi Sebagai Minuman Penyegar Dengan Variasi Waktu Dan Suhu: Studi Sifat Fisik, Kimia, Mikrobiologi, Dan Sensoris Bara, Sari Natalia Batu; Wijaya, I Made Mahaputra; Arnata, I Wayan
JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI Vol 13 No 3 (2025): September
Publisher : Department of Agroindustrial Technology, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRMA.2025.v13.i03.p08

Abstract

Coconut sap is a sweet liquid obtained from tapping coconut flowers and has the potential to be developed as a refreshing beverage. However, its shelf life is limited due to spoiling caused by microbial contamination, which lead to fermentation. This study was aimed to determine the optimal pasteurization temperature and duration in order to maintain the physical, chemical, microbiological, and sensory quality of coconut sap. In this study, pasteurization temperatures of 60, 65, and 70 °C for 20, 25, and 30 minutes was applied.. The observed parameters included total microbial count (TPC), pH, total soluble solids (TSS), protein content, ethanol content, color, and sensory evaluation. The results indicated that pasteurization at 70°C for 30 minutes was found to be the best treatment, maintaining microbial counts below the SNI standard up to the 11th day, with protein content of 0.04%, and undetectable ethanol levels. Sensory evaluation results showed high acceptance in terms of color, aroma, and taste.
Co-Authors Anggreni, A. A Made Dewi Bara, Sari Natalia Batu I Wayan Arnata Pramesti, Rika Charina Dyah