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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
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Optimization of the Carbonization Parameter of Exhausted Coffee Husk (ECH) as Biochar for Pb and Cu Removal Based on Energy Consumption Aninda Puari; Rusnam Rusnam; Nika Rahma Yanti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.242-252

Abstract

Recent studies on agricultural waste as a potential precursor of biochar for heavy metals removal from aqueous solution had not considered exhausted coffee husk (ECH) as the potential one. It is well-known that the carbonization process influences the removal performance of biochar, particularly removal efficiency (RE). However, previous studies rarely considered the energy consumption during the carbonization process. The major objective of this study is to investigate the optimum carbonization parameter on ECH biochar for removal of ion Pb and Cu from economic stand point. The ECH biochar was produced at the different heating temperature (300 – 600°C) and heating time (30 – 120 minutes). In regard to specific cost of bio-sorption, the results showed that 500°C was the optimum heating temperature of ECH biochar for the Pb removal, while 600°C was the optimum one for the Cu removal. Furthermore, the heating time experimental outcomes suggested that the optimum heating time were 30 minutes for Pb removal and 120 minutes done Cu removal.  Key words: Biochar, carbonization temperature, carbonization time, exhausted coffee husk, specific energy cost
Effects of Torrefaction Temperature on the Characteristics of Betung (Dendrocalamus asper) Bamboo Pellets Bagus Saputra; Karina Gracia Agatha Tambunan; Intan Fajar Suri; Indra Gumay Febryano; Dian Iswandaru; Wahyu Hidayat
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.339-353

Abstract

The objective of this study was to evaluate the effects of torrefaction temperature on the physical and mechanical properties of betung bamboo (Dendrocalamus asper) pellets. Torrefaction was conducted in an electric furnace at 200°C, 240°C, and 280°C for 50 minutes. The physical properties evaluated included color change, density, moisture content, water resistance, and water adsorption. The mechanical properties were also investigated by compressive strength test. The result showed that torrefaction affected the color properties of betung bamboo pellets with ∆E values of more than 12 or totally changed. The density and moisture content of torrefaction bamboo betung pellets decreased with increasing torrefaction temperature. The results also showed that the hydrophobic properties of the bamboo betung pellets improved with the increased of torrefaction temperature. The highest compressive strength value was obtained by bamboo betung pellets torrefied at 200°C and the values decreased with the increase of temperature. In conclusion, there were differences in the physical and mechanical properties of bamboo betung pellets that were torrefied at different temperatures. Torrefaction with an electric furnace effectively improved the quality of betung bamboo pellets. Keywords:   Bamboo betung, pellets, temperature, torrefaction
Study on the Vacuum Pressure and Drying Time of Freeze-drying Method to Maintain the Quality of Strawberry (Fragaria virginiana) Rokhani Hasbullah; Nuzul Syah Putra
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.279-291

Abstract

This study aims to examine freeze drying techniques and the effect of freeze drying techniques on the quality of freeze-dried strawberries. The material used are strawberries obtained from farmers in Lembang, West Bandung Regency, Bandung. The fruit having postharvest age of 14-15 days after the beginning of fruit formation. Freeze drying was carried out using Buchi type Lyovapor L-200 freeze dryer.  The research stage consists of sample preparation, freezing, freeze drying, and quality observation. Freezing was carried out for 110 to 120 minutes until the temperature of the fruit reaches temperature of -12°C to -15 °C.  Freeze drying was carried out at temperature of -46 oC for 12 hours, 24 hours, and 36 hours. The experimental design used in this experiment was a complete randomized factorial design. The first factor was vacuum pressure (0.5 mBar and 0.1 mBar) and the second factor was drying time (12 hours, 24 hours and 36 hours). The experiment was conducted with 2 repetitions. Observed quality parameters include drying rate, moisture content, weight loss, hardness, total dissolved solids, rehydration ratio and favorability/hedonic value. The results showed that the vacuum pressure, drying time and their interaction had a significantly effect on the rate of drying, moisture content, weight loss, hardness, total dissolved solids, rehydration ratio, color and texture of the fruit, but had no significantly effect on taste and aroma. Freezing drying at a vacuum pressure of 0.1 mBar and 36 hours drying time produces the best quality of freeze-dried strawberries with hedonic score of 5 (likes) based on the panelists’ assessment. Keywords:   drying, freeze drying, post-harvest, rehydration, strawberry
The Effect of Smoking Treatment on Infection Level, Dormancy, and Physiological Quality of Shallot Seed Wariyanti Wariyanti; Leopold O. Nelwan; Sutrisno Sutrisno
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 2 (2022): June
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i2.218-230

Abstract

Plant-derived smokes has antimicrobial activity and have been reported to have the ability to promote germination for various kinds of plant seeds. The purpose of this study was to analyze the effect of coconut shell burning smoke against the level of fungal infection, dormancy, and the physiological quality of shallot seed bulb. The research design used was a factorial randomized block design. The first factor is the smoking time (t), with 3 levels of treatments (t1 = 40 minutes, t2 = 80 minutes, t3 = 120 minutes) and the second factor is the temperatures of the biomass reactor (T), with 2 treatments (T1 = 200 ± 50 oC and T2 = 300 ± 50 oC). The smoking process using the pyrolysis-external heating method was carried out without affecting the moisture content of the seeds. The smoking with reactor temperature of 300 oC and duration of 40 minutes gave the same effect as the treatment of the highest temperature and duration, two of these treatments gave the highest antimicrobial effect and dormancy compared to other treatments. The smoking with 300 oC reactor temperature and 40 minutes duration gave an average dormancy of 96.3±10.1 (DAH) and 50.7±1.8 % infection. Keywords:   Choconut shell smoke, Dormancy, Fungi infection, Physiological quality, Shallot seed bulbs 
Effect of Addition Fermented Cabbage Extract on Antioxidant Activity and Antinutritional Compounds of Foxtail Millet Flour Diode Yonata; Boby Pranata; Siti Aminah
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i3.427-437

Abstract

Fermented cabbage extract contains lactic acid bacteria Lactobacillus plantarum which produces tannase enzymes and Lactobacillus casei which produces phytase enzymes, which are very effective in reducing antinutrient compounds and increasing the antioxidant compound foxtail millet flour. This study aimed to determine the optimal fermentation time (0, 12, 24, 36, and 48 hours) to decrease antinutrient compounds and increase antioxidant compounds of foxtail millet flour using fermented cabbage extract. The results showed that an increase in fermentation time from 0 to 48 hours reduced levels of tannins and phytic acid in foxtail millet flour by 68.64 % (2.71 - 0.85 mg/g) and 66.60 % (5.33 - 1.78 mg/g) respectively. Afterwards there is an increase in antioxidant activity by 83.10 % (42.25 - 77.26 %) and a decrease in total phenolic content by 18.22 % (7.41 - 6, 06 mg GAE/g). In conclusion, the optimal fermentation time to produce FMF with the best characteristics (low antinutrients and high antioxidant activity) is 48 hours. Keywords:   phytic acid, tannin, antioxidant activity, foxtail millet flour, fermented cabbage extract
Cover Vol 11 no 3 September 2022 Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Placement Precision of Organic Fertilizer Based on Soil Conservation in Taro Cultivation Andi Masnang; Asmanur Jannah; Dyah Budibruri Wibaningwati; Febi Nurilmala; Lany Nurhayati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i3.396-404

Abstract

One of the things that are important to consider when fertilizing is how to place the fertilizer so that plants can consume nutrients efficiently. The research objective was to assess the precision of soil conservation based on fertilizer placement so that fertilizers could increase the production of taro effectively. This study applied four treatments, namely without fertilizer, placing manure in the planting hole, placing manure in the biopore, and placing manure on the borders. The three treatments were given 1 kg of goat manure. The treatment was performed with six replications. Harvesting is carried out in 8 months after planting. The results showed that the placement of manure on the borders was the most effective treatment with the highest yield of wet tubers of 21.4 Mg/ha and was not different from the treatment of manure in biopore 18.3 Mg/ha.This yield was different significantly as compared to that of resulted from treatments where fertilizer was placed in the planting hole (15.9 Mg/ha) or the production of taro without manure application (11.57 Mg/ha). Keywords: Organic fertilizers, production, soil conservation, taro
The Effect of Soaking Time and Liquid Smoke Types on the Quality of Smoked Skipjack (Kastuwonus pelanis L.) Fillets During Storage Naema Bora; John Tibo Kana Tiri; Eny Idayati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i3.405-416

Abstract

This study aims to determine the effect of soaking time in distilled and non-distilled liquid smoke of kusambi wood (Schleicera oleosa) on the quality of smoked skipjack fillets. This study used an experimental method designed with a completely randomized design (CRD) with two factor treatments. The first factor was soaking time with four levels, namely 10, 20, 30 and 40 min. The second treatment factor was the type of liquid smoke from kusambi wood (without and with distillation). The variables observed in this study focused on the quality of the smoked skipjack fillets after the 8-day storage period, including: water content (%), pH, total acid (%), fat content (%) protein (%) and phenol content (%). The results showed that the liquid smoke of kusambi wood with distillation had a pH of 3.18 which was more acidic and had higher phenol content (0.61%) and acid content (17.62%) than liquid smoke without distillation. Of the eight treatment combinations, the quality of smoked skipjack fillets after 8 days of storage, it is found that the treatment of soaking 30 min and 40 min in distilled liquid smoke is the best treatment and meets the quality requirements of SNI. This is based on the value of water content (48.46% and 49.67%), pH (4.04 and 3.96), total acid (8.84% and 9.07%), fat content (4.85% and 4.92%), protein content (18.04% and 17.83%) and phenol content in smoked skipjack fillets (0.65% and 0.61%). Keywords: liquid smoke, distillation, soaking time, quality of smoked skipjack fillet
Microencapsulation of Green Capulaga (Elettaria cardamomum) Essential Oil with Maltodextrin and Its Applications in Coffee Drink Maria Erna Kustyawati; Ribut Sugiharto; Rini Rini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i3.531-541

Abstract

Microencapsulation of green cardamom (Elettaria cardamomum) essential oils and its application is considered  an innovative technique to improve the functional properties of coffee drinks. This study aims to determine the best formulations (M) of combination of maltodextrin and cardamom essential oil, parameters such as microcapsule yields, water content, and solubility were measured. To find out whether the microcapsule was applicable for coffee drink, antioxidant activity and taste and aroma of coffee drink mixed with the best formulation were analyzed. Completely Randomized Block Design (CRBD) with four replications was used; the data were analyzed by ANOVA and further tested by the LSD test with a level of 5%. The results showed that formulations significantly affected the yields and solubility of cardamom essential oil microcapsules. The best formulation treatment was formulation M3 with a yield score,water content and solubility of 89.03%, 11.85%, and 93.50%, respectively. Antioxidant activity, aroma and taste scores of ground coffee mixed with M3 were 77.61±0.23%, 4.31 (typical of cardamom, little coffee), and 4.88 (typical of cardamom, little coffee), respectively. While ground coffee only has antioxidant activity of 76.32±0.31%. In conclusion, ground coffee mixed with microencapsulated  cardamom essential oil has the potential as a herbal coffee drink. Keywords:   Cardamom, Essential oil, Herbal coffee drink, Microencapsulation
Effect of Market Waste Compost and Compound Fertilizer Application on The Vegetative Growth of Oil Palm Seedling (Elaeis guineensis Jacq) in Ultisol Growing Media Ingrid Ovie Yosephine; Hardy Wijaya; Erwin Junaidi Lubis
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 3 (2022): September 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i3.438-450

Abstract

Compost is very important for the soil and is useful in increasing soil productivity and agricultural production in a sustainable manner where quality and quantity are achieved, as well reducing enviromental pollution and improving the quality of land (soil) in a sustainable manner. This study aims to determine the effect of chemical fertilizers and market waste compost addition on the vegetative growth of oil palm seedlings in the main nursery. The research was carried out for 8 months, from December 2019 - July 2020 in the area of the Practical Farm of the Field Laboratory of Soil Management, STIP-AP Medan. This study used a Randomized Block Design (RBD) with 2 factors. Factor 1 was organic compost made of market waste with 3 levels (0, 100, and 200 g/bag). Factor 2 was compound fertilizer (NPK 16:16:16) at 3 levels (5, 10, and 15 polybag). All treatment combinations wer performed in 3 replication plots and 2 seedlings were planted per plot, and 54 polybags in total. Data were analyzed using ANOVA at a level a = 5% and 1% and followed by Duncan's Multiple Range Test (DMRT) at a level a = 5%. The results prove that market waste compost and compound fertilizers had a significant effect on the observed parameters including plant height, number of leaves, and has a very significant effect on the parameters of fresh shoot weight and root fresh weight as well as shoot dry weight and root dry weight (g), but did not significantly affect the stem circumference. Keywords: compound fertilizer, main nursery, Market waste, oil palm, organic material

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