Warji Warji

• Doctor of Philosophy
• Researcher at Lampung University

Tobacco is one of the agricultural products that serves as a main commodity for farmers in Purbolinggo District, East Lampung Regency. East Lampung Regency is the largest tobacco-producing area in Lampung Province. This Community Service activity aims to provide training on tobacco cutting machine technology, tobacco marketing, and to disseminate i...

Agroindustri sari lemon ICF menggunakan proses produksi semi mekanis yang mengakibatkan efisiensi produksinya rendah, antara lain ditunjukkan oleh rendemen sari lemon yang dihasilkan yaitu 17,94 persen atau hanya sekitar 40 persen dari rendemen potensialnya. Pada penelitian ini dikaji penetapan produksi bersih pada tahapan proses produksi agroindus...

The main sector in Indonesia is fisheries, particularly in the industry and export of high-value seafood products. Indonesia's fisheries potential is significant and can serve as a funding source for development with proper management. Effective and efficient drum-type fish smoking machines are needed for post-harvest processing to improve the smok...

. Tarum (Indigofera zollingerina) is a land plant belonging to the Leguminosa family. This plant grows widely in Sumatra and Java. Tarum leaf flour contains crude protein, crude fat or ether extract and crude fiber. Tarum leaf flour contains mineral content, namely Ca, P, Mg and complete amino acids and is almost the same as soybean meal. The popul...

The waste problem in Bandar Lampung is becoming increasingly critical as the volume of domestic waste reaches 1,283 tons per day. Ineffective management can lead to negative impacts on public health and the environment, such as the spread of diseases and pollution. This study aims to design and test a household-scale incinerator that is effective,...

Red ginger plants are abundant and easy for the public to obtain. Red ginger is a plant that has long been consumed by Indonesian people, and since the end of the 20th century it has often been used in food and health drink formulas. In an effort to improve the quality of consumption, it is best to pay attention to the carrying capacity of tools an...

This research aims to design, manufacture and test a parallel type smoker which has an output that can be controlled and has uniform temperature in each smoker cabinet. In this research, design, assembly, testing and temperature regulation were carried out. This parallel type smoker has 3 main parts, namely the combustion stove, inlet pipe, and smo...

Nori is a popular seaweed-based food made from red algae Porphyra. The demand for nori in Indonesia is increasing, but Indonesia does not have Porphyra as raw material and lacks knowledge to find alternatives. Pakcoy (Brassica rapa L.) is a nutritious vegetable that is rarely developed and has the potential to become an alternative raw material for...

Potatoes are root crops and are classified as short-lived plants. The growth is bushy and creeping and has a rectangular stem. One effort to maintain the quality and shelf life of fruit is to process it into dry food (fruit chips). The way to produce healthy food without changing its original shape is to use Vacuum Frying technology. The purpose of...

Currently, the public's tendency to consume traditional medicines is quite high, based on the existing potential, the medicinal product that can be widely developed is the turmeric plant. Turmeric stored in dry powder form has a lower curcumin content than fresh turmeric, namely containing 3-5% curcumin. Therefore, storing turmeric in powder form w...

Chicken eggs are a food that is very rich in nutrients, including protein (12.8%) and fat (11.8%). The high levels of water, fat and protein in eggs can make them a good medium for bacterial growth. Quality deterioration in eggs can be prevented by using egg preservation methods, namely drying eggs into egg powder or flour. Chicken eggs are still v...

Coffee is one of the mainstay plantation commodities in Indonesia. In 2015 Indonesia had a coffee plantation area of 1,254,382 hectares, with a production of 379,005 tons. Coffee is one of the mainstay commodities in Indonesia's plantation sector. The role of coffee commodities for the Indonesian economy is quite important, both as a source of inco...

Agricultural machine tools with technology can help processes in agriculture so that time is more effective, cost-effective and improves the quality or quality of plants or products, such as vacuum frying which is used to fry fruit chips that are susceptible to hot temperatures so that the taste of fruit chips from vacuum frying will be similar to...

The objective of this research is to analyze the drying time of cloves using a hybrid rack-type drying house. The study was conducted for 60 days in Harapan Jaya Village, Wayratai Subdistrict, Pesawaran Regency, Lampung. The tools used include a rack-type drying house, Lux meter UT383, digital scale, grain moisture meter AR991, analog thermometer,...

The agricultural machinery use can increase time and labor efficiency compared to traditional agricultural systems. One of the agricultural machines that is widely used in the livestock sector is the multi-purpose animal feed chopper machine. This machine has two parts with different functions. The chopper section is used to chop long-shaped animal...

Activities in agricultural machinery workshops must concern with Occupational Health and Safety (OHS), especially the physical conditions of the work environment. There are potential physical dangers, especially noise from machines in the workshop. This research aims to analyze the noise level at the UPTD Agricultural Machinery Workshop, Main Cente...

Honey with coffee flowers nectar is native honey formed from flower nectar. In this investigation, corn syrup and rice syrup, two artificial sweeteners, were utilized as an adulterant. Portable fluorescence spectroscopy and the SIMCA method are the tools and techniques employed. There were up to 20 samples of pure Apis mellifera honey and up to 120...

It is important to choose a tillage pattern with the aim of efficiency and effectiveness. This research aims to analyze the effect of tillage patterns using hand tractors on processing work capacity, processing time efficiency and fuel requirements. The research was conducted at the BPTP Lampung Natar Experimental Garden located in Negara Ratu Vill...

The multi-purpose animal feed chopping machine is one of the feed chopping tools that many farmers use to help speed up the chopping of raw materials that will be used as animal feed. The chopping machine can be operated optimally if the machine is ergonomic so that it is safe and comfortable to operate. This study aims to analyze the ergonomics of...

Eggs are one of the sources of protein, fat, minerals, and vitamins that are good for the body. Eggs are prone to deterioration in quality caused by physical damage in the form of cracks that can occur during packing, transportation, and storage. One way to prevent damage is by the salting method. Therefore, it is necessary to soak in a salt soluti...

Cocoa (Theobroma cacao) is one of the plantation commodities in Indonesia that has an important role for the national economy to increase the country's foreign exchange. The process of cocoa drying will result in a dried product changes color, texture, and scent. The purpose of this study was to analyze the efficiency of drying cocoa using a hybrid...

The taste of crackers can be varied by mixing two or more raw materials. Crackers can be made from a mixture of melinjo flour and cassava (gaplek) flour. The purpose of this study is to know and indentify the physical characteristics of crackers made from a mixture of melinjo flour and geplek flour.This study used a completely randomized design (CR...

In 2021 the total amount of waste from various types of waste in Indonesia alone will reach 68,5 milion tons. Based on these data, as much as 17 percent, or around 11,6 milion tons, was contributed by jenna R.Jambeck from the University of Geogia in 2010, there were 275 tons of plastic waste produced worlwide. Around 4,8-12,7 milion tons of them ar...

. Palm oil has an important role to play in improving the country's foreign exchange. The largest selling point in palm oil is palm kernel oil (PKO), this palm kernel oil processing process involves a mixture of kernels and shells that will later be separated. This research aims to design the build and produce a prototype kernel separator from its...

The growth of development that continues to increase in each region results in reduced water catchment areas, to overcome this it is necessary to create artificial recharge. Artificial infiltration aims to preserve groundwater as a source of life to be maintained, for reasons of beauty many building service users prefer paving blocks as an alternat...

Chinese Cabbage is a perishable commodity perishable because it has the characteristics of a living being and does not have the ability to sustain its life. In general, mustard greens are only stored in sacks. This method can cause damage to the mustard leaves and damage to other parts. Therefore the aim of this research is to analyze the freshness...

Vanilla (Vanilla planifolia Andrew) is a plant that has high economic value; the plant is oriented for export. Postharvest handling is necessary to produce good quality vanilla; One of them is the drying process. This study aims to measure the drying time of vanilla, measure the decrease in moisture content, and analyze the efficiency of drying wet...

Preparation of cassava seeds is usually done manually so it takes a relatively long time. TEP-1 type cassava stem cutter (Petokong) is a solution to meet the needs of cassava seeds in large quantities and quickly. This study aims to determine the performance of TEP-1 type Petokong and to compare it with manual cutting using a machete and saw, as we...

Research on jengkol peeling aims to facilitate in stripping effectively, efficiently and also minimize the organs of the body namely the injured finger at the time of stripping of the jengkol fruit. Testing this tool uses 18 samples of jengkol fruit divided into 2 types namely young and old, with diameters small, medium and large. The parameters ob...

This research was conducted to observe the effect of edible coating aloe verawith a combination of carrageenan concentration on the shelf life of crystal guava fruit. This study was designed using linear regression consisting of 2 factors. The first factor consists of 3 levels of carrageenan concentration which includes K1 = 0.1% , K2 = 0.2% , K3 =...

Preparation of cassava seeds using a machete or hand saw takes a long time, the results are not uniform, and there is a potential for damage to cassava seedlings. The double block cutter type cassava stem cutting machine has been designed to produce high capacity and good quality cassava seeds. This study aims to test the performance of the cassava...

The feed given to goats is generally in the form of grass and cocoa pods. The grass that is given directly without being chopped is not eaten as a whole by the goat, but what is chopped first is eaten until it runs out. This service program aims to apply a forage chopper machine for goats at Isbani Farm so that the forage becomes fine in size. The...

Indonesia is one of the fourth largest coffee producers in the world. Arabica and Robusta coffee are types of coffee that are quite widely grown in Indonesia. Both types of coffee are partly grown organically; namely coffee whose entire cultivation process does not involve chemicals such as pesticides or fertilizers derived from chemicals. Organic...

Testing of a greenhouse model condensation machine to purify the sea water needs to be developed to obtain fresh water. The purpose of this research is to transform seawater using solar energy by using the greenhouse effect principle This research uses testing machine performance to get pure water potential from sea water deselination. The test res...

Nanofibrils are nano-sized fibers. One of the materials that can be used to make nanofibrils is whey protein isolate. Nanofibrils can be formed by heating whey protein isolate at a certain temperature and for a certain duration. This study examines the effect of heating temperature and heating time on the formation of nanofibrils. WPI was formed in...

Pemanfaatan biochar sekam padi merupakan salah satu upaya pengelolaan limbah pertanian untuk memperbaiki karakteristik dan kesuburan tanah. Penelitian penggunaan biochar sekam padi sebagai bahan pembenah tanah sudah banyak dilakukan, tetapi penggunaan biochar sekam padi yang dikombinasikan dengan pupuk organik berbasis mikroba belum banyak dilakuka...

Hybrid type dryer is a dryer whose energy source comes from solar energy and additional gas, electricity or biomass energy. This dryer has transparent walls and is closed so that the sun’s heat can enter the drying room, but rain cannot enter the drying room. This dryer is equipped with a fan that serves to push the heat so that it spreads througho...

Multilayer microcapsules are micro-sized capsules composed of several layers. Multilayer microcascules can be made from Soy Protein Isolate (SPI) nanofibrils using the Layer by Layer (LbL) method. The thickness of the microcapsule layer is one of the physical characteristics that need to be studied for the application of multilayer microcapsules in...

IOP Conference Series: Earth and Environmental Science Paper • The following article is Open access Efficacy Dietary Supplementation of Banana Peel Meal on Growth and Cannibalism level of Giant Freshwater Prawn (Macrobranchium rosenbergii) R Rakhmawati1, E Marlina1 and W Warji2 Published under licence by IOP Publishing Ltd IOP Conference Series:...

Nanofibril is a bio material in the form of fibrils and nano-sized. These fibrils can be made from protein; one of them is soy protein isolate (SPI). Nanofibrils can be used in the fields of food and medicine, for example, shells of microcapsules, food thickener, and food texture makers. To utilize this nanofibril need to know the characteristics o...

The need for oil palm seeds in Indonesia has increased lately. Palm seeds can be grown from the kernel. To get a uniform size kernel requires uniform size seeds. This study aims to design, make a separator of palm seeds so that the size of the uniform seeds. The design phase did using a CAD program to draw engineering drawings. Based on engineering...

Nanofibrils are nano-sized fibrils made from protein isolates. To make the nanofibrils that protein isolate solution was heated in a water bath at 80 C while stirring for more 16 h. This nanofibril formation process requires a water bath that can heat and stir protein isolates. So far there have been a lot of stirrers and water baths, but those tha...

Ikan rucah adalah ikan-ikan kecil yang ikut tertangkap nelayan selain ikan konsumsi. Ikan rucah memiliki potensi sebagai sumber protein hewani pakan ternak dan ikan. Ikan rucah selama ini belum termanfaatkan secara optimal, oleh karena itu Tim Pengabdian melakukan kegiatan penerapan mesin pembuat tepung ikan rucah. Tepung ikan rucah diharapkan dapa...

Flow behavior of Soy Protein Isolate (SPI) suspension and Whey Protein Isolate (WPI) solution at pH 2.0 under various heating times were studied using steady shear viscosity measurements. Shear rate sweeps with increasing shear rates (up ramp) was performed to investigate the structural breakdown of the proteins during shearing. Down ramp shear rat...

Kelompok Tani Panca Karya di Desa Sinar Sari Kecamatan Kalirejo telah lama memanfaatkan pupuk organik untuk memupuk sawah dan ladang mereka, bahkan menurut penuturan salah satu anggota kelompok tani bahwa secara turun-temurun mereka memanfaatkan pupuk kandang (kotoran hewan) dan pupuk kompos (seresah dan sisa-sisa tanaman pertanian) untuk menyuburk...

Nanofibrils were formed from soy protein isolate (SPI), which was isolated from black soybean, and commercial SPI by heating 2% w/w SPI suspensions at pH 2 and 80°C for 16 h. Nanofibrils from both types of SPI have branches and curvy structures with diameters between 10 and 20 nm. These fibrils, together with high methoxyl pectin (HMP), were used t...

Salah satu tujuan Laboratorium Lapang Terpadu adalah menjadi pusat pengenalan dini pertanian secara integal melalui program early agroeducation dan agroturism. Program ini menjadi salah satu pembelajaran pertanian bagi anak-anak sejak dini. Program pengabdian ini diikuti oleh anak-anak SD Insantama Bandar Lampung Kelas I. Anak-anak dikenalkan dan d...

Soy protein isolate (SPI) was isolated from Indonesian soybean var. Grobogan and converted into protein nanofibrils. Their functionalities as a food thickener and building blocks for microcapsules were investigated and compared with those of commercial whey protein isolate (WPI). The isolation yield was about 58% with SPI’s protein content of about...

Lampung Province is the largest producer of cassava in Indonesia. Cassava has a weakness that is easily damaged and could not be stored longer. To overcome this, there is a need of an effective drying process so that cassava can be processed into other materials of lower power use as well as its economic value. A hybrid drying system is one solutio...

The objective of this research was to study the ultrasonic wave characteristic at arumanis mangoesdamage caused by fruit fly. The ultrasonic characteristics that was used to sort the damaged mangoes fromthe normal mangoes were attenuation, velocity and moment zero power (Mo) number. Results showed thatmean attenuation coefficient of normal arumanis...

The objectives of this research were to determine attenuation coefficient of arumanis mangoes, to develop border equation prediction and to validate the border equation prediction of arumanis mangoes damage caused by fruit fly using ultrasonic attenuation coefficient. The method was-based on measurement of attenuation coefficient ultrasonic wave in...

The objective of this paper is to analyze measurement error of heat conductivity of organic solid waste (paddy chaf). Error analyze is to obtain accuration of the measured result. Visual Basic Applications (VBA) on excel was used in simulation. The result showed that heat conductivity of paddy chaf is 0,501 W/mK with error 0,00936 W/mK. Voltage tol...