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Mihwan Sataral
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CELEBES Agricultural
Published by Universitas Tompotika Luwuk
ISSN : 27237974     EISSN : 27237966     DOI : https://doi.org/10.52045/jca
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
CELEBES Agricultural: The publisher is the Faculty of Agriculture, University of Tompotika Luwuk. The journal article covers the results of research and policy analysis that can be applied in agricultural practices and sciences such as agronomy, soil science, pests, and plant diseases, entomology, agricultural engineering, agricultural industrial technology, food technology, biology, biodiversity, climatology, animal husbandry, forestry, and socioeconomic agriculture.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol. 5 No. 2 (2025): CELEBES Agricultural" : 5 Documents clear
Biodiesel Production Process from Reutealis trisperma: Technology, Opportunities and Challenges Gesha Desy Alisha
CELEBES Agricultural Vol. 5 No. 2 (2025): CELEBES Agricultural
Publisher : Faculty of Agriculture, Tompotika Luwuk University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52045/jca.v5i2.887

Abstract

Reutealis trisperma (sunan candlenuts) is a non-edible vegetable oil source that can be used as a feedstock for biodiesel production. The biodiesel production process from Reutealis trisperma seed oil involves several stages, including oil extraction, purification, as well as esterification and transesterification reactions using catalysts. This article aims to examine the technology of biodiesel production from Reutealis trisperma seeds, the challenges faced in industrial implementation, and its future development opportunities. Various oil extraction methods, such as mechanical pressing and solvent extraction are compared to determine the efficiency of crude oil conversion. Additionally, the use of heterogeneous and homogeneous catalysts in the transesterification process is analyzed to optimize biodiesel conversion. The results of the literature study conducted indicate that biodiesel from Reutealis trisperma has characteristics that comply with national and international biodiesel standards. However, there are several challenges in the production process, such as the availability of raw materials, the fatty acid content and composition of Reutealis trisperma, environmental impact, and sustainability aspects. The development of more environmentally friendly technology and the utilization of biomass waste-based catalysts present potential opportunities to enhance the sustainability of this biodiesel production.
Antibacterial Activity of Gaharu (Aquilaria malaccensis Lamk) Against the Bacteria Streptococcus pyogenes Elianto, Nopriani; Sianturi, Sister; Saharuddin, Tria Saputra
CELEBES Agricultural Vol. 5 No. 2 (2025): CELEBES Agricultural
Publisher : Faculty of Agriculture, Tompotika Luwuk University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52045/jca.v5i2.888

Abstract

Streptococcus pyogenes is a bacterium that causes throat and skin infections.  Diseases caused by Streptococcus pyogenes bacteria can typically be treated with antibiotics. This study aims to determine the antibacterial activity of the ethanol extract of gaharu leaves (Aquilaria malaccensis Lamk) against the development of Streptococcus pyogenes bacteria using the disc diffusion method. The positive control used the antibiotic clindamycin, and the negative control used 1% DMSO. Observations were made by measuring the inhibition zone formed around the paper disc. The average diameter of the inhibition zone formed included a 10% concentration of 9.8 mm, a 15% concentration of 10.08 mm, a 20% concentration of 11.54 mm, and for the positive control, antibiotic clindamycin, it was 29.92 mm in the very strong category. In contrast, the negative control, 1% DMSO, did not form an inhibition zone. The One Way Anova data analysis test using the SPSS IBM version 26 program obtained results (p>0.05), meaning that there were significant antibacterial and differences in the diameter of the inhibition zone of the ethanol extract of gaharu leaves in each treatment.
Sensory Quality and Cooking Loss of Broiler Chicken Nuggets with the Addition of Yellow Corn Septian, I Gede Nano; Baeti, Husnul; Fahrullah, Fahrullah; Yulianto, Wahid; Kisworo, Djoko
CELEBES Agricultural Vol. 5 No. 2 (2025): CELEBES Agricultural
Publisher : Faculty of Agriculture, Tompotika Luwuk University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52045/jca.v5i2.897

Abstract

The term "organoleptic testing" is synonymous with the more specific term "sensory evaluation". The objective of the study was to ascertain the impact of incorporating supplementary yellow corn in the formulation of broiler chicken nuggets on their sensory quality and cooking loss. The research method employed was of an experimental nature, utilising a Completely Randomised Design (CRD) with three distinct treatments: P0, representing the control, P1, which involved the incorporation of 25 g of yellow corn into a 100% nugget mixture (10%), P2, encompassing the addition of 37.5 g of yellow corn into a 100% nugget mixture (15%), and P3, comprising the inclusion of 50 g of yellow corn into a 100% nugget mixture (20%). Recent studies have demonstrated that the provision of yellow corn does not exert a significant influence on the sensory quality values and cooking losses of broiler chicken nuggets (p > 0.05). The cooking loss of P1 nuggets was found to be 0.019% lower than that of P2 nuggets (0.22%) and P3 nuggets (0.41%). The Duncan test demonstrated that there was a negligible difference between P1 and P2, and between P2 and P3. Furthermore, there was no significant difference between P2 and P3. The lowest cooking loss for chicken nuggets in the treatment with the addition of yellow corn was P1 0.019%. This shows that the higher the level of yellow corn added, the lower the cooking shrinkage. The lower the cooking shrinkage value, the better the product quality because there will be less nutritional loss, on the other hand, the higher the cooking shrinkage value, the lower the product quality. The findings showed that the provision of yellow corn did not have a significant effect on the sensory quality or cooking loss of broiler chicken nuggets.
Production of Edible Films from Whey-Chia Seed Combinations with Different Plasticizers: Effects on Physicochemical Properties Fahrullah, Fahrullah; Bulkaini, Bulkaini; Kisworo, Djoko; Septian, I Gede Nano
CELEBES Agricultural Vol. 5 No. 2 (2025): CELEBES Agricultural
Publisher : Faculty of Agriculture, Tompotika Luwuk University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52045/jca.v5i2.900

Abstract

The utilization of natural polymer-based feeding films has emerged as an alternative to plastics and as a solution to the problem of environmental pollution. Concurrently, these films maintain the function of maintaining the shelf life, quality, and safety of food products. The objective of this study was to ascertain the effect of varying proportions of whey-chia seed combinations and types of plasticiser on the physicochemical characteristics of food films. The present study employed a completely randomised factorial design, comprising Factor A: whey-chia seed combination (A1 = 1:0.5; A2 = 1:0.75 and A3 = 1:1) and Factor B: type of plasticizer (B1 = sorbitol and B2 = polyethylene glycol/PEG). The interaction between the whey-chia seed combination and the type of plasticizer did not show a significant effect (P>0.05). However, the whey-chia seed combination itself had a significant impact (P<0.01) on film elongation and tensile strength. The utilisation of sorbitol as a plasticiser resulted in enhanced flexibility of the film, thereby rendering it more appropriate for utilisation in healthy and environmentally friendly food applications. The optimal treatment was determined to be a mixture of whey-chia seeds in a 1:1 ratio with sorbitol plasticizer, yielding an elongation at break of 74.23%, tensile strength of 3.997 MPa, and crude fibre content of 15.67%.
Social Hierarchy of Adult Male Long-tailed Macaques (Macaca fascicularis) in the Madya Area of Pura Agung Pulaki, Bali Safitri, Mely; Swasta, Ida Bagus Jelantik; Syah, Moh Jafron
CELEBES Agricultural Vol. 5 No. 2 (2025): CELEBES Agricultural
Publisher : Faculty of Agriculture, Tompotika Luwuk University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52045/jca.v5i2.953

Abstract

Long-tailed macaques (Macaca fascicularis) live in groups with a social structure consisting of many males and females (multi-male and multi-female), and interactions between individuals such as social activities are strongly influenced by hierarchy. This study aimed to determine the social hierarchy structure of adult male long-tailed macaques (M. fascicularis) and their behavioral profiles in middle area groups in the Pura Agung Pulaki, Bali. Observations were conducted using focal animal sampling and ad libitum sampling methods. The hierarchical structure was observed using three methods, namely the sociometric matrix method, food distribution, and other analyses that support hierarchical determination (non-copulatory mounting, scrotal touching, and combing between males). The highest activities in the middle area group were browsing (17.2%) and moving (17.2%). The hierarchical structure in the middle area group is ordered from the most dominant individual as follows: Ra, Co, Ma, Ku, Cha, Fra, Ka, Ni, In, and Jo. The hierarchical structure in the middle area group is linear. The provision of food bait has been proven effective in determining the social hierarchy structure in long-tailed macaques (M. fascicularis). This study can be used as a basis for the conservation of long-tailed macaques (M. fascicularis) in the Pura Agung Pulaki area.

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