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agriTECH

agritech
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Published by Universitas Gadjah Mada

ISSN : 02160455 EISSN : 25273825 DOI : 10.22146/agritech

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Agritech with registered number ISSN 0216-0455 (print) and ISSN 2527-3825 (online) is a scientific journal that publishes the results of research in the field of food and agricultural product technology, agricultural and bio-system engineering, and agroindustrial technology. This journal is published by Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta in colaboration with Indonesian Association of Food Technologies (PATPI).

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 13 Documents

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Search results for , issue "Vol 39, No 4 (2019)" : 13 Documents clear

Red Guava Juice (Psidium guajava L.) Reduce Oxidative Stress of Toll Gate Collector Riva Mustika Anugrah; Sugeng Maryanto; Kusmiyati Tjahjono; Martha Irene Kartasurya
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Exposure to air pollution can increase the occurrence of oxidative stress. Research showed that guava can reduce oxidative stress in Sprague Dawley rats. This experiment investigated the effect of red guava juice on oxidative stress in toll collectors. The subjects were 20 toll collectors in the treatment group and 20 in the control group. The treatment group received 250 mL red guava juice for 21 days while the controls did not receive anything. Malondialdehyde (MDA) was measured with thiobarbituric acid (TBA) reaction, food consumption was measured by 3×24 hours’ recall. The data were analyzed by paired t-test, Wilcoxon test, independent t-test, Mann Whitney test, and general linear model. The results showed that the effect of red guava juice on the MDA level was significant in the treatment group (p<0.05). A multivariate analysis showed that the effect of red guava juice to MDA level was significant after controlled by age, carbohydrate intake and initial conditions (p<0.05). Red guava juices of 250 mL for 21 days could reduce malondialdehyde (MDA) levels of toll collectors.

Aktivitas Antimikroba Ekstrak Kulit dan Jantung Pisang Muli (Musa Acuminata) terhadap Bakteri Escherichia coli Dewi Sartika; Novita Herdiana; Suci Nata Kusuma
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Daging ayam merupakan salah satu bahan pangan yang memegang peranan penting sebagai sumber protein hewani dalam pemenuhan kebutuhan gizi masyarakat. Penelitian ini bertujuan untuk (1) mengetahui adanya daya hambat ekstrak kulit dan jantung pisang muli sebagai antimikroba alami dalam menurunkan cemaran Escherichia coli, (2) menentukan konsentrasi terbaik ekstrak kulit dan jantung pisang muli sebagai antimikroba alami untuk menurunkan cemaranEscherichia coli, (3) mengetahui pengaruh penggunaan ekstrak kulit dan jantung pisang muli sebagai antimikroba alami dalam penurunan cemaranEscherichia coli pada daging ayam. Hasil penelitian menunjukkan bahwa ekstrak kulit dan jantung pisang muli memiliki daya hambat sebagai antimikroba alami dalam menurunkan cemaran bakteri Escherichia coli. Hasil penelitian menunjukkan ekstrak kulit pisang muli memiliki daya hambat pertumbuhan bakteri E. coli dengan diameter sebesar 6.45 mm dengan aktivitas antibakteri sedang. Penghambatan ekstrak jantung pisang muli menunjukkan mampu menghambat pertumbuhan bakteri E. coli dengan diameter hambat sebesar 5.63 mm dengan kategori aktivitas antimikroba sedang. Konsentrasi terbaik ekstrak kulit dan jantung pisang muli sebagai antimikroba alami untuk menurunkan cemaran Escherichia coli yaitu masing-masing konsentrasi ekstrak 100% pada taraf nyata 5%. Ekstrak kulit dan jantung pisang muli mampu menurunkan cemaran bakteri Escherichia coli pada daging ayam dengan kategori rendah, dengan angka penurunana dari 8log1.8 menjadi 7log3.0 koloni/g (ekstrak kulit pisang) dan 8log1.6 menjadi 7log4,4 (ekstrak jantung pisang). Total penurunan mikrobia oleh ekstrak kulit dan jantung pisang hanya 1log cycle dengan kategori kativitas anti bakterinya adalah rendah.

Model Prediksi Hasil Panen Berdasarkan Pengukuran Non-Destruktif Nilai Klorofil Tanaman Padi Fitri Hidayah Nasution; Santosa Santosa; Renny Eka Putri
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Developing yield prediction model was done to predict the production of rice crops based on chlorophyll value at different age levels. A model was developed by using spatial variability data of chlorophyll value. It was measured with a non-destructive method by using chlorophyll meter CCM-200 plus at different age levels in terms of days after planting 25, 40, 60 and 70 (DAP), and yield of rice. The objective of developing yield prediction model was to describe correlation between chlorophyll value and yield at different ages that had been obtained from 20 observation plots at the rice field. The study area was in Banda Langik, Sungai Bangek village, Lubuk Minturun of Koto Tangah sub district in Padang. Data were collected in two systems; grid sampling point and crop cutting test (CCT). Measuring of chlorophyll contained in leaf or number of SPAD (soil plant analysis development) was done by using chlorophyll meter CCM-200 plus. The research showed that chlorophyll value in rice crop correlated with yield. It was proved by correlation index obtained in each stage of age; 25 DAP (r = 0.945), 40 DAP (r = 0.887), 60 DAP (r= 0.835) and 70 DAP (r= 0.897). Rice yield could be predicted through following model: Y = -0.431513 + 0.045144 X1 + 0.03645 X2 + 0.01017 X3 + 0.020551 X4, where Y was the rice yield (kg/m2) and X was chlorophyll value at different age levels (X1=25 DAP), (X2=40 DAP), (X3=60 DAP) and (X4= 70 DAP). The model was produced through a multiple linear regression test based on chlorophyll value data and rice productivity during 1 period of harvest session.

Physicochemical Characteristics of Sun-dried and Roasted Cassava Rice Rudiati Evi Masithoh; Maynanda Brigita Chrysta; Sabila Avinda Deviana
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

High demand of rice can be minimized by promoting cassava as an alternative carbohydrate source. One method to process cassava to ease consumption and to prolong its shelf-life is by making it into analog rice, namely cassava rice. Two drying methods were studied to obtain the physicochemical information of cassava rice. This research aimed at determining color and chemical properties, i.e. water content, ash, lipid, protein, carbohydrate, starch, amylose, amylopectin, and mineral contents of cassava rice processed by roasting and sun-drying. It also compared physicochemical characteristics of cassava rice and paddy rice to get better understanding of nutritional values of cassava rice. Results showed that physical, chemical, and mineral contents of cassava rice were different from paddy rice. Cassava rice had lower water, protein, Zn and P2O5 contents than paddy rice. Roasted cassava rice was darker than cassava rice. Sun-dried and roasted cassava rice showed no different values in terms of lipid, carbohydrate, starch, amylose, amylopectin, Mg, Zn and P2O5 contents, while other characteristics were similar.

Evaluation of Yield and Yield Components of Two Potato Cultivars in Khorasan Razavi Province of Iran Setareh Foroghian; Mohammad Reza Asgharipour; Mehdi Ghiafeh Davoodi
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

In order to study the yield and yield components of two potato cultivars, an experiment was conducted as a split plot based on a randomized complete block design with three replicates. The experiment was performed in two locations, Jolgeh-Rokh district, and Fariman city, in professional farmers’ fields in Khoarasan Razavi province. The main plots consisted of two potato cultivars, Agria and Fontane cultivars (medium maturing), which were identified as the main cultivars used in chips production factories in the Province. Our results showed higher potential of Agria cultivar for production of stems per plant compared to Fontana cultivar. Both stem number and tuber number per plant along with tuber weight and tuber yield were higher in Fariman location than in Jolgeh-Rokh.

Comparison between Hydrodistillation with Steam Explosion and Conventional Hydrodistillation in Kaffir Lime Oil Extraction Yustina Wuri Wulandari; Supriyadi Supriyadi; Chairil Anwar
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Steam explosion was proposed as a pretreatment method to accelerate the hydrodistillation (SE-HD) of kaffir lime leaves. This research aimed to compare SE-HD and conventional hydrodistillation (HD) in terms of extraction yield, extraction time, chemical composition, and essential oil quality. The extraction of kaffir lime oil with SE-HD was superior to HD with regard to extraction time (35 min. vs 120 min.) and extraction yield (1.386% vs 1.182%). The chemical composition and the quality of the extracted essential oil from both methods were quite similar, indicating the absence of adverse influence from the application of steam explosion as pretreatment. Therefore, SE-HD was a fast and an energy-saving method for extracting essential oil from kaffir lime leaves.

Kinetika Perubahan Kualitas Fisik Buah Mangga Selama Pengeringan Beku dengan Perlakuan Pendinginan Awal dan Ketebalan Irisan Yulia Ariani; Nursigit Bintoro; Joko Nugroho Wahyu Karyadi
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Mango (Mangifera indica L.) is one of the important fruits for tropical residents. The biggest losses of mangoes occur during the postharvest period due to the lack of proper postharvest handling and lack of processing efforts. Frozen drying is a method that is considered the best at present for preserving horticultural products. This freeze drying method can maintain the structure, taste, color, and aroma of fruit. In this method, the product was cooled to freeze for 6 hours. The solid phase water was then removed from the material through a sublimation process in vacuum condition. This study aimed to find out the freeze drying results through various pre-treatments and thicknesses by means of determining the proper combination treatment. The mango used had a sweetness level of 18° Brix with a size of 14 cm x 8 cm and an average weight of 400 g. This research was conducted using a three-factor completely randomized design of 2 x 3 x 5. The first factor was the cooling treatment (non-freezing and liquid nitrogen). The second factor was the thickness of the material (0.5 cm, 1 cm and 1.5 cm). The third factor was time (0 hours, 9 hours, 18 hours, 27 hours and 36 hours). The observed parameters comprised of: water content, texture, and lightness. The non-freezing treatment with 1.5 cm thickness showed a low water content of 7.58%, and the kinetics results used the Newtonian model. It also showed the highest vitamin C decrease, that was 84.12% and the kinetics results used the first-order model. The highest lightness decrease of liquid nitrogen treatment with 1 cm thickness was 74.08%.

Value Chain Analysis on Pigmented Rice: A Case Study in Sleman Regency, Special Region of Yogyakarta, Indonesia Kilana Putri Anindita; Dyah Ismoyowati; Endy Suwondo
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

White rice has become the main source of carbohydrates, but in the last few years, red and black rice are getting more popular. Red and black rice can be an alternative food for people who wish to reduce the risk of diabetics due to its low glycemic index. Pigmented rice demand in Yogyakarta is continuously increasing. However, farmers are reluctant to plant pigmented rice because of their lower yields. Value chain analysis on pigmented rice is performed to provide the condition of the business’ performance for farmers who are not willing to work on pigmented rice yet. The objective of this study was to identify the main activities and to measure the performance of the value chain. The value chain performance was measured by calculating profit, marketing margin, and farmer’s share. In the business of pigmented rice nowadays, there are 5 actors involved, i.e. farmer, farmers group, association of farmers groups, distributor, and retailer. These five actors formed 5 value chains for red rice and 4 value chains for black rice. The main activities were cultivating, cropping, milling, sorting out, packing, and selling. The performance of the pigmented rice was as follows: on the red rice value chain, farmers earned the highest profit in each chain, except on the chain where the association of farmers groups was involved. The largest marketing margin was found on the farmer – association of farmer groups – retailer – end-user consumer chain. On the black rice value chain, farmers earned the highest profit in each chain, except on the chain where the farmers group was involved. The largest marketing margin found on the farmer – farmers group – distributor – retailer – end-user consumer chain. For both the red and the black rice value chain, the farmer’s highest share was obtained on the farmers – distributor – end-user consumer chain.

The Toxicity and Antibacterial Properties of Calamus ornatus Bl. Rattan Fruit Heriad Daud Salusu; Ernita Obeth; Abdul Rasyid Zarta; Eva Nurmarini; Hamka Nurkaya; Irawan Wijaya Kusuma; Enos Tangke Arung
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Calamus ornatus Bl., locally known as rotan mantang or rotan seuti is one of the commercial rattan species growing in the forests of East Borneo. Its fruit is edible, like the fruits of other species of rattan, and it has been used by the local people as traditional medicine to treat stomachache or toothache. Until recently, there has not been any study investigating the benefits of the fruit for medicinal or other purposes. This research aimed to discover the bio-activity potentials of Calamus ornatus Bl. fruits by identifying its toxicity level and antibacterial potentials. The parts of the fruit (pericarp, flesh, and seed) were extracted using ethanol as solvent to extract samples. The toxicity was analyzed by using the Brine Shrimp Lethality Test (BSLT) method while the antibacterial activity was tested using a well diffusion method. Low toxicity was found in the flesh, whereas the pericarp and the seed were non-toxic. Antibacterial activity against Escherichia coli was found in the pericarp and the seed, while antibacterial activity against Streptococcus mutans was found in the pericarp and the flesh.

Lotka Volterra Model Simulation for Rice-field Rat and Tyto Alba Owls in Sumpiuh District, Banyumas Regency, Central Java Reza Kusuma Nurrohman; Ardiansyah Ardiansyah; Bayu Dwi Apri Nugroho
agriTECH Vol 39, No 4 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Rice-field rat (Rattus argentiventer) is a rodent that has a high level of productivity. These animals attack rice plants from the vegetative to the generative phase. This research aimed to analyze and to predict the accuracy of the use of owls with mathematical equations model in Kebokura and Lebeng villages, Sumpiuh district. Lotka - Volterra and Competitive Lotka-Volterra models were used to predict the population dynamics of Owl (predator) and rice-field rats (prey), then Runge - Kutta numerical method was applied to analyze the population dynamics of predator and prey at a certain time. The results of the analyses using the Lotka – Volterra, Competitive Lotka - Volterra equations and simulation data, each graph data showed that the rats’ population was able to be maximally suppressed. Based on the analysis result, started with 24 owls and 1,689 rats, the rats’ population could be suppressed to 104 using Lotka – Volterra, and to 176 using the Competitive Lotka – Volterra model. Then in the first and second simulation, started with 50 and 100 owls and 1,689 rats, analysis using Lotka – Volterra and Competitive Lotka – Volterra showed that the rat population could be suppressed to as much as 126, 188 and 145, 189, respectively. Based on the analysis, it could be concluded that use of Serak Jawa owl strategy was able to reduce and stabilize the rat populations. Furthermore, the higher population of owls can prevent the population explosion of rats and can suppress the rat population to a lower number.

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Contact Name
Rachma Wikandari

Contact Email
rachma_wikandari@mail.ugm.ac.id

Phone
+6285712601130

Journal Mail Official
agritech@ugm.ac.id

Editorial Address
Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA

Abstract

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Rachma Wikandari

Contact Email rachma_wikandari@mail.ugm.ac.id

Phone +6285712601130

Journal Mail Official agritech@ugm.ac.id

Editorial Address Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Rachma Wikandari

Contact Email
rachma_wikandari@mail.ugm.ac.id

Phone
+6285712601130

Journal Mail Official
agritech@ugm.ac.id

Editorial Address
Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281, Indonesia

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA