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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 1,392 Documents

101 102 103 104 105

Pengembangan Model Operasi Pompa Berkelanjutan di Daerah Irigasi Sumur Pompa Dangkal Murtiningrum Murtiningrum; Sigit Supadmo Arif; Saiful Rochdyanto
agriTECH Vol 16, No 1 (1996)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Model of sustainable pump operation in an unconfined groundwater irrigation system was developed to determine pump operation pattern which consist of the number of pumps, duration, and distance between pumps, so that crop water requirement is fulfilled and groundwater irrigation system is sustained. Total irrigation flow, EQpi, results in lowering water table which is called drawdown, sn. Drawdown sn should be less than di (sn< di) which (d1 is maximum drawdown which is affected by pump technology. Model outputs for the area of Sri Rahayu Farmer Group in Kedungtuban, Blora for existing cropping pattern show that average irrigation water requirement is 916.1mm/year and peak flow is 4.93 ips. It still can be fulfilled by 1, 2, 3, 4, or 9 pumps for 10 days operation continuously which is shown by the drawdowns which are less than maximum drawdown.

Akseptabilitas Es Krim dengan Fortifikasi Mesocarp Lontar (Borassus flabeliffer L.) sebagai Antioksidan dan Serat Pangan Alami Eny Idayati; Agrippina Agnes Bele; Rikka Welhelmina Sir
agriTECH Vol 38, No 3 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Lontar palm (Borassus flabeliffer L.) fruit is one of the specific tropical fruits from East Nusa Tenggara province (NTT)-Indonesia that is rich in functional compounds such as beta-carotene as an antioxidant and food fiber. However, the utilization of these fruits is still limited due to the streroidal saponins and pholifenol content that makes them taste bitter and less favored by consumers. Therefore, one alternative that can be done is by enriching them into ice cream products. The production of Ice cream cannot go through with high heating processing so that the antioxidants extracted from lontar palm mesocarp can be in a stable condition. The aim of this study is to investigate the effect of ice cream on the acceptability values of the hedonic test, determining of fiber and beta-carotene content and evaluating antioxidant activities fortification from the lontar's mesocarp. The amount of lontar mesocarp for fortification (F) were 30%, 40% and 50% of the wet weight with the combination of some variation of milk treatment such as full cream milk, sweetened condensed milk, and liquid soy milk. The acceptability of the product was tested using hedonic test against color, aroma, texture, and flavor parameter. Antioxidant activity was performed by determination of the DPPH value (1.1-diphenyl-2picryhydrazil radical-scavenging), dietary fiber using enzymatic-gravimetric methods and UV-Vis spectrophotometers to analyze the content of beta-carotene. The results showed that on the acceptability test, the most preferred samples valued by panelists were the fortification, F1 treatment (30%) with the content of β-carotene of full cream milk was 2212.44 ± 11.82 μg /100 mg, dietary fiber was 8.95 ± 0.05%, and antioxidant activity was 45.54 ± 0.36%.

Pengaruh Penambahan Asam Galat Sebagai Kopigmen Antosianin Murbei Hitam (Morus nigra L.) terhadap Stabilitas Termal Yoko Putra Nusantara; Lydia Ninan Lestario; Yohanes Martono
agriTECH Vol 37, No 4 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The purposes of this research were to determine the effect of copigmentation of mulberry anthocyanin with gallic acid towards thermal and to determine the optimal molar ratio of anthocyanin: gallic acid to stabilize the mulberry anthocyanin. The variation of treatments on this research were molar ratio of mulbery anthocyanin: gallic acid: 1:0; 1:25; 1:50; 1:75; 1:100 which were heated at 60 °C, 70 °C, 80 °C, and 90 °C. After heated, the colour intensity were measured every 45 minutes at 60 °C, 30 minutes at 70 °C, 30 minutes at 80 °C, and 20 minutes at 90 °C. The measurement was conducted on wavelength 512 nm for uncopigmented anthocyanin and 514 nm for copigmented anthocyanin using Spectrophotometer UV-VIS. The result showed that copigmentation could increase the thermal stability of mulberry anthocyanin. Copigmentation could increase the activation energy and half life. The optimal molar ratio of anthocyanin: copigment was 1:75, while the energy of activation was 65.20 kJ/mole. ABSTRAKTujuan penelitian ini adalah untuk menentukan efek kopigmentasi antosianin murbei dengan asam galat terhadap panas dan menentukan rasio molar antosianin: asam galat yang optimal untuk menstabilkan antosianin murbei. Variasi perlakuan penelitian ini adalah rasio molar antosianin: asam galat: 1:0; 1:25; 1:50; 1:75; 1:100 yang dipanaskan pada suhu 60 °C, 70 °C, 80 °C, dan 90 °C. Setelah pemanasan selesai, dilakukan pengukuran intensitas warna setiap 45 menit pada suhu 60 °C, 30 menit pada suhu 70 °C, 30 menit pada suhu 80 °C, dan 20 menit pada suhu 90 °C. Pengukuran dilakukan pada panjang gelombang 512 nm pada antosianin yang tidak terkopigmentasi dan 514 nm pada antosianin yang terkopigmentasi dengan menggunakan Spektrofotometer UV-VIS. Hasil penelitian menunjukkan bahwa kopigmentasi meningkatkan stabilitas antosianin murbei terhadap panas. Kopigmentasi dapat meningkatkan energi aktivasi dan waktu paruh. Rasio molar optimal antosianin:asam galat adalah 1:75 dengan energi aktivasi sebesar 65,20 kJ/mol.

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.

Faktor Risiko terhadap Total Bakteri, Staphylococcus aureus, Koliform, dan E. coli pada Susu Kambing Widodo Suwito; Erna Winarti; Felisitas Kristiyanti; Ari Widyastuti; Andriani Andriani
agriTECH Vol 38, No 1 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The objective of this research is to determine the risk factors that affect the total bacteria, S. aureus, coliform, and E. coli in goat milk against SNI No 01-6366-2000 requirements. A total of 16 samples of goat milk from Sleman district were analyzed for total bacteria, S. aureus, coliform using dilution plate count, whereas E. coli count was based on biochemical reaction. Management of each dairy goat farm was recorded using questionnaires. The risk factors of total bacteria, S. aureus, coliform, and E. coli in goat milk were determined based on chi square ( χ2) bivariate analysis, odds ratio (OR), and relative risk (RR). The risk factors that affected total bacteria, S. aureus, coliform, and E. coli in goat milk are cleanliness of stall, milk containers, personal knowledge of dairy hygiene, washing of the udder before milking, the time and the amount of milking. ABSTRAKPenelitian ini bertujuan untuk menentukan faktor risiko yang mempengaruhi total bakteri, Staphylococcus aureus (S. Aureus), koliform, dan Escherichia coli (E. coli) pada susu kambing dari Kabupaten Sleman agar memenuhi persyaratan SNI No 01-6366-2000. Sebanyak 16 susu kambing dari Kabupaten Sleman digunakan dalam penelitian ini. Susu kambing diperiksa terhadap total bakteri, S. aureus, koliform, dengan hitungan cawan sedangkan E. coli berdasarkan reaksi biokimia. Manajemen pemerahan dari masing-masing peternakan ditulis dalam lembar kuesioner. Analisis bivariate chi square (χ2), odds ratio (OR), dan relative risk (RR) digunakan untuk menentukan faktor risiko yang mempengaruhi total bakteri, S. aureus, koliform, dan E. coli pada susu kambing. Faktor risiko yang mempengaruhi total bakteri, S. aureus, koliform, dan E. coli dalam susu kambing adalah kebersihan kandang, tempat penampung susu, pengetahuan personal hygiene pemerah susu, mencuci ambing sebelum diperah, waktu dan banyaknya pemerahan.

Effect of Hydraulic Retention Time (HRT) and Organic Loading Rate (OLR) to the Nata de coco Anaerobic Treatment Eficiency and its Wastewater Characteristics Istna Nafi Azzahrani; Fanny Arivia Davanti; Ria Millati; Muhammad Nur Cahyanto
agriTECH Vol 38, No 2 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

In this study, experiments were conducted to investigate the effect of hydraulic retention time (HRT) and organic loading rate (OLR) on process stability of nata de coco wastewater anaerobic treatment using semi-continuous digester. The standard-rate anaerobic digester with working volume of 8.5 L was used to investigate the effect of three different hydraulic retention times (15, 20, and 25 days), and a standard-rate anaerobic digester with working volume of 9.1 L was operated at different organic loading rates of 0.5, 1, and 1.5 g/L/day. The findings revealed that minimum HRT for nata de coco wastewater anaerobic treatment using semi-continuous digester was achieved at HRT 20 days. Based on data from this study, the reduction of organic content in nata de coco wastewater increased when OLR increased until 1 g/L/day. But then those parameters value decreased when OLR being increased further to 1.5 g/L/day. It showed that at 1.5 g/L/day the amount of substrate fed to the system was exceeding the total degradation capacity of methanogenic microorganisms, hence the organic overload happened and decreased the efficiency of organic content reduction in anaerobic treatment of nata de coco wastewater.

Karakteristik Dangke Susu Kerbau dengan Penambahan Crude Papain Kering Sulmiyati Sulmiyati; Nur Saidah Said
agriTECH Vol 38, No 3 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Dangke is traditional food from Enrekang, South Sulawesi, which is made from coagulated buffalo milk or cow milk protein by using crude papain. There is limited information about characteristics of dangke from buffalo milk than those from cow milk. The characteristics of dangke is affected by the addition of crude papain. This study was aimed to explore the effect of crude papain addition to curd dangke production, percentage of whey and taste of dangke from buffalo milk. This study was conducted by using complete randomized design with 4 treatments and 5 repetitions. Treatments consist of the addition of crude papain in different concentration: 0.5%; 1%; 1.5% and 2.0%. This study howed that curd dangke production range was 41.38- 52.20; pH range was 6.92- 6.96; lactic acid percentage range is 0.15-0.70; curd dangke's colour range was 1.35 (white)- 1.50 (white); smell range was 2.50 (mild dangke' smell)- 3.55 (mild dangke' smell); taste range was 2.10 (bitter)- 4.60 (not bitter) and preference level range was 2.00 (dislike)- 3.90 (like). This study revealed that the best quality of dangke from buffalo milk was derived from treatments with addition of 1% crude papain. Physicochemistry characteristics from our dangke: curd dangke production was 43.94%; whey percentage was 51.14; pH was 6.96; lactic acid percentage was 0.15. Organoleptic characteristics: curd dangke's colour was 1.45 (white), smell was 2.55 (mild dangke' smell), taste was 4.10 (slightly bitter) and preference level was 3.55 (like).

Komponen Flavor Volatil Tempe yang Dibungkus dengan Daun Pisang dan Plastik Rasyid Hanafi Harahap; Zulkifli Lubis; Jamaran Kaban
agriTECH Vol 38, No 2 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The objective of the research was to identify volatile flavor compounds and odor description of tempeh wrapped with banana leaf and plastic fermented at different times. The research object was tempeh wrapped with banana leaf (TD) at 48 (TD1H), 72 (TD2H), and 96 hours (TD3H) fermented, and tempeh wrapped with plastic (TP) at 48 (TP1H), 72 (TP2H), and 96 hours (TP3H) fermented. Sample was extracted by SPME. GC-MS/O was used to identify volatile flavor compounds and odor description. The volatile flavor compound found in tempeh were group of ester, terpenoid, alcohol, aldehyde, ketone, furan and nitrogen containing compound. α-pinene was only found in tempeh wrapped with banana leaf, whereas piperazine, sec-butyl nitrite and (Z)-α-bisabolene were only found in tempeh wrapped with plastic. This revealed that there was difference flavor compound found in tempeh wrapped with banana leaf and tempeh wrapped with plastic. ABSTRAKPenelitian ini bertujuan untuk mengetahui komponen penyusun flavor volatil dan aroma tempe yang dibungkus daun pisang dan plastik pada waktu fermentasi yang berbeda-beda. Tempe yang digunakan sebagai objek penelitian adalah tempe yang dibungkus dengan daun pisang (TD) dengan waktu fermentasi 48 jam (TD1H), 72 jam (TD2H), dan 96 jam (TD3H) dan tempe yang dibungkus plastik (TP) dengan waktu fermentasi 48 jam (TP1H), 72 jam (TP2H), dan 96 jam (TP3H). Ekstraksi sampel tempe menggunakan HS-SPME. Analisis flavor dan deskripsi odor dilakukan dengan menggunakan GC-MS/O. Senyawa flavor tempe yang diperoleh adalah senyawa-senyawa dari golongan ester, terpenoid, alkohol, aldehid, keton, furan dan senyawa-senyawa yang mengandung nitrogen. α-pinen hanya ditemukan pada tempe yang dibungkus daun pisang, sedangkan piperazin, sec-butil nitrit dan (Z)-α-bisabolen hanya ditemukan pada tempe yang dibungkus plastik saja. Hal ini berarti ada perbedaan komponen penyusun senyawa flavor pada tempe yang dibungkus daun pisang dan plastik.

Identifikasi Logam Berat dalam Biji Jagung Manis dan Kedelai pada Transisi Sistem Pertanian Organik Sapto Priyadi; Soelistijono Soelistijono; Setie Harieni; Kusriani Prasetyowati
agriTECH Vol 38, No 4 (2018)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Heavy metal contaminants in land agriculture are environmental problems, and they affect food safety, so there is a need for the research of Pb, Cd and Cu decrease absorption by plants using organic chelating agent, i.e. substance of humus (humic and fulvic acid) in the manure. The research was done with a completely block design, in Gagaksipat, Ngemplak, Boyolali; heavy metal analysis in manure, land and seeds used an atomic absorption spectrophotometer-flame (AAS Jena Contr AA 300, Germany). It was aimed to identify contaminants of Pb, Cd, and Cu in sweet corn and soybean seeds. The research treatments were doses of cow manure: 15, 20, 25, 30, 35, 40, 45 and 50 kg per hectare. The results showed that the enrichment coefficient (EC) of Pb and Cu in sweet corn seeds had low accumulator plants categories; the EC of plumbum in soybean seeds had low accumulator plants categories, whereas the EC of copper soybean seeds had moderate accumulator plants categories; and the EC of cadmium in the sweet corn and soybeans seeds was undetectable. Exposures of Pb and Cd in corn sweet and soybean seeds were undetectable, while exposures of Cu in sweet corn and soybean seeds were 2.03 and 12.39 ppm, respectively. Contamination of Pb, Cd and Cu exposures in land after sweet corn harvested were 30.99; undetectable and 60.58 ppm, respectively. While Pb, Cd and Cu residues in land after soybean harvested were 33.24; undetectable and 56.26 ppm, respectively.

Penentuan Saluran Pemasaran terhadap Tingkat Harga pada Rantai Pasok Kedelai (Glycine maxL.) Merr.) di Kabupaten Grobogan Provinsi Jawa Tengah Novita Erma Kristanti; Iqbal Saimima Almuntaha
agriTECH Vol 37, No 4 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This research aimed to measure price elasticity of demand soybean with the activity of supply and demand; measuring the concentration ratio (Cr) on a tier that has soybean activities trade system and provides review of marketing channels are considered the most efficient with effective demand in related supply chain. The method of data collection with the technique of convenience sampling and snowball sampling. Methods of sampling was done through indepth interview in supply chain. By calculating its price transmission elasticity on the soybean marketing channels, the ratio of concentration in tier collectors and traders. The result of the calculation of the price transmission elasticity values obtained the highest value on channel 4 with the marketing value 2,509. The average ratio of the concentration of the middleman 0,8501, and tier 0,94554 merchant. So these values indicate that the most efficient marketing channel with an effective demand is marketing channel 4 is composed of farmers, farmers group, and tofu/tempeh industries. AbstrakPenelitian ini bertujuan untuk melakukan penentuan perilaku pasar terhadap tingkat harga kedelai di wilayah Grobogan. Dalam penentuan perilaku pasar tersebut perlu diketahui nilai tingkat harga dengan perhitungan elastisitas permintaan terkait harga dengan aktivitas supply dan demand kedelai; mengukur nilai konsentrasi rasio (Kr) pada tier yang memiliki aktivitas tata niaga kedelai yang paling sering; dan memberikan ulasan saluran pemasaran yang dinilai paling efisien dengan permintaan yang efektif terkait rantai pasok. Metode pengumpulan data dilakukan dengan teknik convinience sampling dan snowball sampling melalui indepth interview kepada pelaku rantai pasok (supply chain) dan dinas terkait. Dengan menghitung nilai elastisitas transmisi harga (Et) pada saluran pemasaran kedelai, rasio konsentrasi pada tier pengepul dan pedagang, nilai elastisitas transmisi harga diperoleh nilai tertinggi pada saluran pemasaran 4 dengan nilai 2,509. Konsentrasi rasio rata-rata pengepul 0,8501, dan tier pedagang 0,94554. Nilai tersebut menunjukkan bahwa perilaku pasar yang paling efektif menggunakan saluran pemasaran yang paling efisien dengan permintaan yang efektif yaitu saluran pemasaran 4 yang terdiri dari petani, kelompok tani, dan pengrajin tahu/tempe.

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Fiametta Ayu Purwandari

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Home Page

OAI Link

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Contact Name Fiametta Ayu Purwandari

Contact Email fiametta@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
Fiametta Ayu Purwandari

Contact Email
fiametta@ugm.ac.id

Phone
+6285712601130

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agritech@ugm.ac.id

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

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Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA