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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
Arjuna Subject : -
Articles 1,077 Documents
 100   101   102   103   104 
Physicochemical and Functional Characteristics of Analog Rice Made from Local Cassava and Red Kidney Bean Lalong, Paulus Risan Funan; Naben, Maria Novalina; Soru, Joanivita P.G.; Lengur, Eufrasia R.A.; Taek, Maximus M.
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.846-857

Abstract

Nuabosi cassavas and Inerie red kidney beans are local foods from East Nusa Tenggara whose processing is relatively limited, but they have the potential to be developed into analog rice. This study aims to determine the effects of various compositions of Nuabosi cassava flour and Inerie red kidney bean flour on the characteristics of the produced analog rice. The procedure was conducted in three main stages: the preparation of cassava flour and red beans, formulation and production, and analysis. Various compositions of Nuabosi cassavas flour and Inerie red kidney beans were used: 98:0 (A); 88:10 (B); 83:15 (C); 78:20 (D); 73:25 (E). The data were analyzed by ANOVA, followed by DMRT at a 5% significance level. The results of the study showed, analog rice sample D (78% cassavas flour: 20% red kidney beans flour) has the best physicochemical and antioxidant activity characteristics of all samples. Furthermore, the sensory analysis results showed that most panelists had started to like the aroma, taste, and texture of analog rice made from 78% cassavas flour and 20% red kidney beans flour. Analog rice made from Nuabosi cassavas and Inerie red kidney beans has the potential to be developed as a functional food. Keywords: Kriging interpolation; MSFI; paddy field; soil fertility index, soil mapping.
Fluorescence Imaging as a Non-Destructive Method for Aflatoxin Detection in Corn Kernels: Recent Advances and Challenges Nofiyanti, Sri Handayani; Ahmad, Usman; Tondok, Efi Toding; Widodo, Slamet
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.714-731

Abstract

Fluorescence imaging has developed as a promising non-invasive method for identifying aflatoxin contamination in agricultural commodities, especially corn kernels. This paper examines current improvements in fluorescence imaging technologies, highlighting its potential to improve food safety through swift and precise detection of mycotoxins. The paper examines the basics of fluorescence, the necessary setup for optimal imaging, and the issues related to background fluorescence interference, sensitivity, and the construction of calibration models. Although there are some limitations, fluorescence imaging presents considerable advantages, such as cost-efficiency and the capacity to obtain concurrent spectral and spatial data. Proposed future research objectives include the validation of imaging systems using naturally contaminated samples, the optimization of imaging parameters, and the integration of machine learning techniques to enhance data processing. By overcoming existing constraints and utilizing technical progress, fluorescence imaging can serve as an essential instrument in the detection of aflatoxin contamination, hence enhancing food safety. Keywords: Aflatoxin, Detection, Fluorescence imaging, Food safety, Machine learning.
Predicting Oil Content of Palm Fruit Based on its Electrical Properties Mellyana, Verra; Budiastra, I Wayan; Irmansyah, Irmansyah; Purwanto, Yohanes Aris
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.933-946

Abstract

The oil content of oil palm fruit is a crucial parameter that must be determined before harvest, as it directly impacts crude palm oil (CPO) quality and processing efficiency. The conventional chemical method for oil content determination is costly and time consuming. This study aims to develop a non-destructive, accurate, and rapid method for predicting oil content in oil palm fruit based on its electrical properties. Measurements of electrical properties were taken across frequencies of 50 Hz to 5 MHz. Oil content of samples were determined by chemical method. Some pre-treatments of electrical properties were carried out and the pre-treated electrical properties were calibrated with reference oil content using simple linear regression and partial least squares regression. Linear regression model showed moderate accuracy (r = 0.61–0.81), with RMSE values between 9.54% and 12.99%. PLS regression models using admittance (r = 0.99, R² = 0.98, SEP 2.20%, RPD 7.99), resistance (r = 0.98, R² = 0.97, SEP 2.62%, RPD 5.56), and impedance (r = 0.98, R² = 0.95, SEP 3.16%, RPD 4.68) produced high prediction accuracy. The results confirm that electrical properties can be used to predict oil content in oil palm fruit rapidly and non destructively. Keywords: Electrical properties, Linear regression, Oil content, PLS.
The Impact of Geometry Engineering on Combustion Efficiency and Emissions: Performance Evaluation of Axial Diffuser Tube, Perforated Distribution Node, and Symmetrical Axial Radiator Al-Naffakh, Jameel; Al-Qassab, Mohammed R.; H.J, Abdulhussein; Jafar, Israa Jafar
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.744-754

Abstract

With increasing environmental concerns about emissions, improving combustion systems for alternative fuels, such as used engine oil, has become imperative. Investigating innovative burner designs to enhance fuel-air mixing, reduce emissions, and stabilize performance presents challenges due to high viscosity and incomplete combustion. However, previous research has not adequately addressed the role of burner head geometry in mitigating these problems. A combination of experimental tests and computational fluid dynamics (CFD) simulations was used to evaluate the performance. This study aims to fill the gap by evaluating the effects of three burner head designs—axial diffuser tube, perforated distribution node, and symmetrical axial cooler—on combustion efficiency and emissions. The results indicate that the axial diffuser tube achieved the highest efficiency (94.3%) and lowest emissions (NOx: 128 ppm, CO: 52 ppm, PM: 18 μg/m3) due to uniform heat distribution and increased turbulence. The perforated distribution node showed a balanced performance, with an efficiency of 91.7% and moderate emissions (NOx: 145 ppm, CO: 65 ppm, PM: 24 μg/m³). Meanwhile, the symmetric axial cooler, designed for thermal stability, showed lower efficiency (89.6%) and higher emissions (NOx: 167 ppm, CO: 78 ppm, PM: 30 μg/m³). The results indicate the importance of burner engineering in balancing efficiency and emissions control. The results of this study support sustainable combustion technologies for industrial and domestic applications, and underscore the global transition to clean energy solutions. Keywords: Burner head design, CFD simulations, Combustion efficiency, Emissions reduction, Geometric engineering, Waste automotive oil.
Physical and Chemical Analysis of Anchovy Nuggets with Additional Moringa and Cassava Leaves to Prevent Stunting Habsari, Windi; Lestari, Dita Ayu; Hartanto, Willcent Twinatmaja
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.879-886

Abstract

Supplementation of moringa and cassava leaves in anchovy nuggets has can improve nutrition value. The aim of this study was to evaluate the effect of moringa and cassava leaves in enriching nutrition of anchovy nugget. The experiment was performed with five compositions (anchovy:moringa leaves:cassava leaves), namely F0 (100:0:0), F1 (96:2:2), F2 (92:4:4), F3 (88:6:6) and F4 (84:8:8). The physical parameters included color analysis and organoleptic test using 5 points hedonic test involved 25 panelist. Nutritional content was determined through proximate analysis. Results show that addition of moringa and cassava leaves decreased the color of anchovy nuggets, except the yellowness which was significantly increased in F3 treatment. The highest protein content was obtained from F4 formulation, the highest carbohydrate content was given by F3 and F4 treatments, and the lowest fat content was provided by nuggets from F3 and F4. The highest organoleptic score was F0 for taste, F2 and F3 for flavor, F3 for color, and F3 and F4 for overall scores. The supplementation of leaves generate unpleasant flavor. The addition of 6 g moringa and cassava leaves improve nutritional value of anchovy nuggets with acceptable sensory attributes that can be employed to solve stunting problem. Keywords: Anchovy nugget, Cassava leaf, Moringa leaf, Physico–chemical, Stunting.
Evaluation of Eucheuma cottonii and Gracilaria sp. as Food Buffer for The Ibu Kota Nusantara (IKN) Based on Proximate Analysis Simamora, Gevbry Ranti Ramadhani; Kumalaningrum, Amalia Nur; Munfarida, Siti; Siwi, Olga Galih Rakha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.836-845

Abstract

East Kalimantan Province has great opportunities as a buffer for the IKN economy based on the utilization of marine potential. Eucheuma cottonii and Gracilaria sp. are the red seaweeds (Rhodophyta) most widely cultivated in Indonesia. This study aims to analyze the proximate content in two types of red seaweed, namely E. cottonii (offshore cultivation) and Gracilaria sp. (pond cultivation) obtained from farmers in dry conditions cultivated around the waters of Balikpapan, East Kalimantan, Indonesia. The results of the analysis showed significant differences between cultivation locations. Gracilaria sp. (pond cultivation) taken from Handil (HTK) and Babulu Laut (BALUKE) is considered potential because it has low water content (HTK 26.99 ± 0.02%), and has higher ash content (BALUKE 31.18 ± 0.41%), fat (BALUKE 0.36 ± 0.01%), protein (BALUKE 10.01 ± 0.01%), and crude fiber (HTK 1.90 ± 0.16%) compared to E. cottonii. These findings provide important information for the development of seaweed as a natural resource for the food and health industries. Keywords: Eucheuma cottonii, Food industry, Gracilaria sp., proximate content, Red seaweeds
Design and Technical Evaluation of a Tempeh Slicer Using Stainless Steel Rotating Disc with Three Curved Blades Tasliman, Tasliman; Alam, Ahmad Mutafakkir; Santoso, Adetrio; Habib, Yoga Dwi Bahrul; Soedibyo, Dedy Wirawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.920-932

Abstract

A tempeh chips slicing machine has been developed. This machine was developed based from the results of the previous research. The main slicing component is a stainless steel rotating disc equipped with three curved knives. With this knives geometry arrangement, slicing can be done at high speed. High speed is possible due to the absence of reciprocating motion and due to smooth cutting strokes. A variable speed 550W brush less direct current motor was employed to power the slicing mechanism. The machine was tested at motor speed of 500, 600, 700, 800 and 900 rpm. Across all speeds, the machine consistently produced chips of 1 mm thickness that is in compliance with industrial requirement. The machine produced up to 96% of intact slices, with slicing capacity of 53 kg/h (692 slices/min) and a very low electric power consumption ranged from 23 W (at 500 rpm) to 60 W (at 900 rpm). The machine can slice several chip solid materials with good results, therefore it has the potential to be developed into a multi purpose chip slicer. Keywords: Curved rotary knife, Low power consumption, Slicer, Slicing machine, Tapioca tempeh chip.
Assessment of Soil Quality Index Based on Chemical Properties at Various Land Use and Criticality Levels Latifah, Diva Nuri; Maroeto, Maroeto; Purwadi, Purwadi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.999-1011

Abstract

Land damage will reduce the quality of land function and increase the area of critical land. Land use in the Manten Subwatershed cause changes land function that have the potential to increase the criticality level of a land. This study aims to measure the soil quality index from the chemical aspect of critical land in the Manten Subwatershed. Surveys at sampling points were conducted on three types of land use (kaleyard, rice fields, and dry fields) combined with three levels of critical conditions (not critical, critical, and potentially critical). Each combination was carried out at three locations, involving 27 sampling points. Soil quality indicators measured in terms of chemistry include soil pH, nitrogen, phosphorus, potassium, and soil organic matter content. The results of the study showed that all sampling points had a very low soil quality index with an SQI score between 0.06 and 0.122 and an average pH that tended to be low (<6), N-total content of 0.137%-0.308%, phosphorus of 70.97-655.66 ppm, exchangeable potassium of 0.490-2.690 me/100 g, and organic matter 0.023%-0.044%. The practice of adding organic matter needs to be implemented to improve soil quality. Keywords: Critical Land, Land Use, Chemical Properties, Soil Quality Index, Sub Watershed.
Effect of Microclimate Temperature and Relative Humidity on the Postharvest Quality of Coconut Sap and Sugar Rahayoe, Sri; Dewi, Hilda Maya Sintia; Nugroho, Andri Prima; Saputro, Arifin Dwi; Ngadisih, Ngadisih
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.899-910

Abstract

Coconut sap, increasingly recognized as a functional sweetener, is highly perishable and influenced by environmental conditions during postharvest handling, yet the specific impacts of microclimatic variables such as temperature and relative humidity (RH) on sap and sugar quality remain inadequately studied. This research investigates the effects of RH and temperature on key physicochemical parameters of coconut sap—pH, Brix, and density—and evaluates their influence on coconut sugar quality, focusing on moisture, ash content, and color. Sap was collected biweekly in Central Java over a five-week period and analyzed in conjunction with environmental data recorded using an IoT-based weather station. Increased RH was significantly associated with decreased sap pH (r = –0.482, p = 0.007) and showed a weak negative correlation with Brix. Density remained stable across varying RH levels. Although temperature showed visual trends in sap quality parameters, statistical analysis did not reveal significant correlations, likely due to the narrow temperature range during the observation period. Throughout sugar processing, TSS increased consistently across boiling, saturation, and oversaturation stages. Final sugar blocks maintained stable moisture (6–8%) and ash content (1.8–2.2%), with color variations reflecting Maillard and caramelization reactions. Maintaining RH below 85% is recommended to preserve sap quality and product consistency. Keywords: Coconut sap, Coconut sugar, Postharvest quality, Relative humidity, Temperature.
Secondary Metabolites of Babandotan (Ageratum conyzoides L.) and Putri Malu (Mimosa pudica L.) to Control Fall Armyworm (Spodoptera frugiperda) Anggraini, Dewi; Windriyanti, Wiwin; Wiyatiningsih, Sri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.887-898

Abstract

Corn (Zea mays) production in Indonesia has experienced fluctuations due to infestations of the fall armyworm (Spodoptera frugiperda). Utilizing botanical pesticides derived from Ageratum conyzoides (Babandotan) and Mimosa pudica (Putri Malu) is a method to control the fall armyworm and maintain stable corn production. This study aims to identify the active compounds and determine the effective concentration of A. conyzoides and M. pudica extracts in reducing S. frugiperda populations. The research was conducted from June to November 2024 at the Pest Laboratory of the UPT Plant Protection Unit in Surabaya. The study was designed using a Completely Randomized Design with a single factor: different concentrations of plant extracts, replicated five times. Observed parameters included phytochemical tests, GC-MS compound screening, larval symptoms, mortality rate, pupae formation, and imago formation. The results showed that A. conyzoides and M. pudica extracts at the highest concentration (1%) significantly affected mortality rates, pupation, and adult emergence. Both extracts contained flavonoids, tannins, and triterpenoids, which effectively controlled S. frugiperda populations. Keywords: Bioinsecticide, Spodoptera frugiperda, Zea mays.

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