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Jurnal Bio-Geo Material Dan Energi
Published by Universitas Jambi
ISSN : 28081560     EISSN : 28081404     DOI : https://garuda.kemdikbud.go.id/journal/view/22293#
Core Subject : Humanities, Science, Engineering,
Humanities Electrical & Electronics Engineering Energy
The journal publishes research papers in the all the fields of: Study of energy materials, sourced from plants (Bio-materials) Study of materials sourced from plants and animal including post harvest and food technology (Bio-materials) Study of materials sourced from mining materials (Geo-materials) renewable energy Policy fossil energy Social, economic and humanities studies related to bio-geo material
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 77 Documents
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Color Stability of Encapsulated Purple Sweet Potato Extract as Affected by Maltodextrin–Gum Arabic Ratio Yusfi, Liza Aulia; Lavlinesia, Lavlinesia; Sadad, Anwar; Mursalin, Mursalin
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 3 (2026): Journal of Bio-Geo Material and Energy (BiGME), June 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/j-bigme.v6i3.57295

Abstract

This research aims to determine the effect and best treatment of the ratio of maltodextrin and gum arabic on the stability of the encapsulation of purple sweet potato pigment ethanol extract against processing factors. This research used the Completely Randomized Design (CRD) method with 5 levels of maltodextrin and gum arabic ratios (1:1, 1:2, 1:3, 1:4, and 1:5) with 3 repetitions to obtain 15 experimental units. The parameters observed were the effect of the concentration of maltodextrin and gum arabic on the color stability of purple sweet potato ethanol extract encapsulates at heating temperatures (60°C, 70°C, 80°C, 90°C, and 100°C), sugar concentrations (10%, 20%, 30%, 40%, and 50%), salt concentrations (2%, 4%, 6%, 8%, and 10%), and various pH levels (3–9). The data obtained will be analyzed using ANOVA at levels of 1% and 5% and Duncan's New Multiple Range test (DNMRT) at the 5% level. The optimal formulation was achieved at a 1:5 maltodextrin to gum arabic ratio, which maintained excellent stability up to 100°C, 50% sugar, and 8% salt concentrations, while exhibiting significantly higher pigment resilience in acidic environments than in alkaline conditions.
Enhancing the Physicochemical and Sensory Properties of Purple Yam Wet Noodles through Egg White Addition Ulyarti, Ulyarti; Purba, Olivia Idovani; Mursyid, Mursyid; Sulistiana, Ika Putri; Pratami, Tesy
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/rb6tgh98

Abstract

Purple yam (Dioscorea alata) is a potential local ingredient for wet noodle production, although improving its texture remains important for product quality and consumer acceptance. This study investigated the effect of egg white addition on the physicochemical and sensory properties of purple yam wet noodles. A completely randomized design was used with seven egg white concentrations: 0%, 2.5%, 5%, 7.5%, 10%, 12.5%, and 15%, with three replications. The data were subjected to ANOVA, followed by DnMRT when significant differences were observed. Egg white concentration significantly affected noodle elongation, cooking time, cooking loss, moisture and protein contents, color, and several sensory attributes. As the concentration of egg white increased, elongation, cooking time, protein content, and moisture content tended to increase, whereas cooking loss decreased. The addition of egg white also changed the color and sensory characteristics of the noodles, particularly at higher concentrations, which resulted in lower scores for color and taste. The 7.5% egg white addition showed the most favorable overall results, with an elongation of 12.62%, cooking time of 190 s, cooking loss of 3.11%, moisture content of 64.6%, protein content of 12.71%, color values of L* = 53.83, a* = −1.20, and b* = −7.33 and obtained the highest overall acceptability score (4.08).
Processing and Interpretation of lgbeti Sheet Aeromagnetic Data for Mineral Exploration Eze, Martina Onyinye; Anyadiegwu, Chukwunweike Faustinus; Aigba, Paul Igienekpeme
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/qggxj303

Abstract

This research aims to estimate the depths to magnetic source body boundaries using the aeromagnetic sheet of Igbeti (sheet 201) in Oyo State, western Nigeria. The structural analysis of the Igbeti area was performed by detecting source edges/discontinuities using edge-detection techniques, namely the Horizontal gradient method and Tilt derivatives. The magnetic source depth was also performed in the area using the source parameter imagery technique. Edge detection highlighted linear structures, and this infers the effects of such features on the tectonic events of the Igbeti area. In order to correct for phase shifts of magnetic anomalies of the study area due to the local direction of the geomagnetic field vector, RTE was calculated. Regional-residual separation Technique was used in this research to separate the observed magnetic field into two main components: the regional component and the residual component. Edge detection filtering aimed at locating the boundaries of magnetic source bodies and to come up with a structural map of the study area. Regional structural grains, including fractures and faults, are revealed by the prominent NE-SW lineaments in this area, which are associated with the emplacement of quartz-schist and muscovite-schist. The notable geological features and their geometric structures have been confirmed as a viable prospect for mineral exploration in the region.
Energy Waste Reduction in Wastewater Treatment Plants: Bibliometric Analysis with a Lean-Based Mapping Framework Ahyar, Rangga
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/mecrbm72

Abstract

Wastewater Treatment Plants (WWTPs) are among the most energy-intensive infrastructures in environmental management, with substantial energy consumption occurring in pumping, aeration, sludge treatment, and auxiliary operations. Although many studies have addressed energy-efficiency improvement, less attention has been given to systematically identifying non-value-added energy consumption from a lean management perspective. This study aims to synthesize research on energy waste in WWTPs, identify major operational sources of energy waste, examine the application of lean management and Value Stream Mapping (VSM) principles, identify emerging digital technologies, and develop a conceptual lean-based Energy Waste Mapping Framework. The study combines bibliometric analysis and a PRISMA-based systematic literature review using a revised Scopus search strategy that requires the simultaneous presence of WWTP, energy, and lean/VSM concepts. The bibliometric component is used to characterize research trends, thematic development, and emerging technologies, while thematic synthesis is used to identify operational energy-waste sources and classify them according to lean waste principles. The literature indicates that aeration, pumping, sludge handling, recirculation, and inefficient equipment operation are recurrent sources of energy waste. The identified wastes can be classified into five categories: waiting, overprocessing, transportation, motion, and overproduction. These findings provide the basis for a conceptual Energy Waste Mapping Framework that adapts VSM principles to WWTP process analysis. The framework is conceptual and requires validation through full-scale WWTP case studies before quantitative claims about energy savings can be made.
Geological Structure Analysis of The Grao Sakti Hot Spring Manifestation Using Gravity Derivatives Method: English Amin, Sarwosucitra; Tantri, Tantri; Utama, Hari Wiki; Siregar, Anggi Deliana; Tanjung, Maulina; Parnadi, Wahyudi Widyatmoko
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/tg3dsy91

Abstract

Hot springs are among the most common geothermal surface manifestations, typically emerging through fractures formed by tectonic processes. The subsurface structures associated with the Grao Sakti hot spring manifestation in Jangkat, Merangin Regency, were identified using GGMplus gravity data by analyzing rock density contrasts through cross-sectional interpretations of the First Horizontal Derivative and Second Vertical Derivative of the gravity anomaly data. The Complete Bouguer Anomaly map reveals several gravity anomalies ranging from 73.8 to 174.6 mGal, which are interpreted as the Masurai, Hulunilu, and Sumbing volcanic complexes, Dikit Fault Segment has promoted the development of a fault-bend basin within the study area and the Barisan Mountain Range. Structural interpretation based on the FHD and SVD maps indicates the gravity derivative results indicate that the Grao Sakti manifestation is associated with a subsurface structure interpreted as a normal fault. This interpretation is consistent with regional geological evidence, and previous studies conducted along the Grao Sakti hot spring profile that normal fault is interpreted to have developed as a consequence of the formation under a transtensional tectonic regime movement of the Dikit Fault Segment, a major segment of the Sumatran Fault System, which trends in a northwest–southeast direction.
Effect of Sugar Concentration on the Physicochemical and Sensory Characteristics of Pondoh Salak Fruit Leather Syaiful, Friska; Marsyenda, Dinda; Defira, Citra; Ichsan, Onne Akbar Nur
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/ven9nc57

Abstract

Fruit leather is a processed fruit product in the form of thin, flexible sheets prepared by pureeing fruit flesh and subsequently drying it, typically characterized by a plastic, chewy texture and a sweet taste that retains the fruit's original flavor. This study investigated the effect of sugar concentration on the physical, chemical, and organoleptic characteristics of Pondoh salak (Salacca zalacca) fruit leather. A non-factorial CRD was employed, comprising six sugar concentration treatments (15%, 20%, 25%, 30%, 35%, and 40%) with three replications. The parameters evaluated included tensile strength, moisture content, ash content, pH, and hedonic scores for texture and taste. Results showed that tensile strength, moisture content, decreased significantly with increasing sugar concentration, while ash content and pH increased significantly. Sensory texture scores were significantly affected by sugar concentration, peaking at 25%, whereas taste scores showed no significant differences among treatments. The optimal treatment was obtained at 25% sugar concentration (P3), yielding a tensile strength of 0.29 MPa, moisture content of 11.33%, ash content of 1.35%, pH of 4.33, and sensory scores of 3.28 for both texture and taste. These findings demonstrate that sugar concentration is a critical formulation parameter governing the physicochemical and sensory quality of Pondoh salak-based fruit leather.  
Dye Stability and Its Effects on the Performance of Water Spinach-Based Dye-Sensitized Solar Cells Yuliasari, Fitri; Rohmaful Aeni, Alfieta; Fauji, Najmudin; Maulana, Adifalah; Pambudi, Teguh
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/m03kg713

Abstract

This study investigates the relationship between optical absorption, photovoltaic performance, and charge transfer properties of dye-sensitized solar cells (DSSCs) sensitized with natural dye extracted from water spinach (Ipomoea aquatica). The DSSC was fabricated with an FTO/TiO2/dye/Mosalyte/Pt/FTO configuration and evaluated on day 1 and day 5 to investigate short-term dye degradation. UV–Vis spectra exhibited a chlorophyll absorption peak at 665.04 nm on day 1, which slightly shifted to 663.13 nm on day 5 with a significant decrease in absorbance intensity, indicating pigment degradation. The bandgap energy remained nearly constant (1.799–1.805 eV), suggesting that the intrinsic electronic structure of the dye was preserved. In contrast, photovoltaic performance deteriorated, with the short-circuit current density (JSC) decreasing from 0.316 to 0.232 mA/cm2 and the power conversion efficiency dropping from 0.109% to 0.064%. Electrochemical impedance spectroscopy (EIS) showed an increase in series resistance (RS) and charge transfer resistance (RCT) at low bias, particularly at 0 V, suggesting hindered interfacial charge transfer. These findings demonstrate that dye degradation primarily reduces light harvesting and charge transfer rather than altering the dye energy levels, resulting in lower DSSC performance. This study highlights the importance of dye stability in improving the efficiency and durability of natural dye-based DSSCs.

Page 8 of 8 | Total Record : 77

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