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agriTECH
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 11 Documents
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Search results for , issue "Vol 43, No 2 (2023)" : 11 Documents clear
Analysis of Consumers' Perception on Purchase Decisions of Takeaway Coffee Drinks in Yogyakarta Fauzia Adni Alita; Dyah Ismoyowati; Wagiman Kastawiyana
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.55875

Abstract

This study aimed to determine and analyze the effect of brand image, product, price perception, and preference on purchase decisions of takeaway coffee. The research analyzed variables that most influence purchase decisions of coffee drink takeaway in Yogyakarta and the effect of each independent variable. Data were collected using an online questionnaire from individuals who have purchased takeaway coffee drinks in Yogyakarta more than once. The sample size was 100 respondents, selected using non-probability sampling techniques with the purposive sampling method. The other process was analyzing data by employing a multiple regression approach. The results showed that brand image and product positively affected purchasing decisions with t-count values of 2.340 and 2.715 and significant levels of 0.008 and 0.006, respectively. Price perception reversely influences purchasing decisions, with a t-value of 1.626 and a significance level of 0.107. Preference positively affected purchasing decisions with a t-value of 5.605 and a significance level 0,000. Furthermore, brand image, product, price perception, and preference positively affected purchasing decisions, with an F value of 65.334 and a significance level 0.000. (6) The magnitude of brand image, product, price perception, and perception of takeaway coffee drinks on purchasing decisions (adjusted R 2 ) is 0.504. Considering these results, the regression equation obtained was Y = -0,177 + 0,293X1 + 0,273X2 + 0,320X3 + 5,550D1 + e.
Penambahan Bubuk Kunir Putih (Curcuma mangga Val.) dan Carboxymethyl Cellulose pada Snack Bar: Pengujian pada Sifat Fisikokimiawi dan Sensori Pri Okla Ginting; Dwiyati Pujimulyani
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.61648

Abstract

Snack bar (SB) adalah salah satu produk yang dapat dijadikan pangan fungsional dengan penambahan bubuk kunir putih. SB dibuat dengan pencampuran kacang-kacangan, sereal, dan buah-buahan dengan penambahan agen pengikat. Tujuan penelitian ini yaitu untuk menguji efek dari penambahan bubuk kunir putih (Curcuma mangga Val.) dan Carboxymethyl Cellulose (CMC) pada sifat fisikokimiawi dan sensori dari SB. Variasi formula yang digunakan dalam penelitian ini yaitu perbandingan mocaf dan bubuk kunir putih sebanyak 100:4; 100:8 dan 100:12 g; serta konsentrasi CMC sebesar 0,5; 1 dan 1,5%. SB dianalisis dengan analisis fisik (tekstur dan volume pengembangan), kimia (aktivitas antioksidan dan analisis proksimat), dan uji kesukaan. SB dengan penambahan 12% bubuk kunir putih dan 1% CMC mendapatkan hasil sifat fisikokimiawi dan sensori yang terbaik dengan nilai tekstur sebesar 1.227,67 gf, volume pengembangan 0%, aktivitas antioksidan 10,76% RSA, kadar air 7,96%, abu 1,64%, protein 4,55%, lemak 11,93% dan karbohidrat 73,93%.
Fermentasi Sari Koro Pedang Putih (Canavalia ensiformis (L.) DC.) dengan Penambahan Sukrosa dan Susu Skim Fajarika Alimahana; Indah Kartika; Anisa Wahyu Utami; Muhammad Nur Cahyanto; Tyas Utami
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.62345

Abstract

Koro pedang putih merupakan salah satu jenis kacang-kacangan yang kurang dimanfaatkan secara maksimal. Salah satu usaha yang dilakukan adalah fermentasi sari koro pedang putih oleh bakteri asam laktat. Namun jenis karbohidrat pada sari koro pedang putih berbeda dengan pada susu sapi, yang dapat mempengaruhi pertumbuhan bakteri asam laktat dan aktivitasnya. Oleh karenanya perlu dipelajari kemampuan kultur starter bakteri asam laktat untuk tumbuh dan menghasilkan asam pada sari koro pedang putih dan pengaruhnya bila ditambahkan sukrosa dan skim sebagai sumber karbon. Dua kultur bakteri asam laktat yang diisolasi dari air rendaman koro kratok yaitu Lactobacillus plantarum WGK4 dan Lactobacillus paracasei WGK5 masing-masing diinokulasikan ke dalam sari koro pedang putih. Isolat tersebut juga diinokulasikan ke dalam sari koro pedang putih yang ditambah dengan sukrosa (2-10%), susu skim (2-10%) serta kombinasi sukrosa dan susu skim yang diinkubasi pada suhu 37 °C selama 24 jam. Pada awal dan akhir fermentasi diukur jumlah sel, asam tertitrasi dan pH. Hasil penelitian menunjukkan bahwa kedua isolat tersebut dapat tumbuh baik pada sari koro pedang putih, dan menghasilkan asam. Penambahan 2% sukrosa ataupun 2% susu skim meningkatkan secara nyata produksi asamnya. Penambahan sukrosa menyebabkan pH sari koro pedang fermentasi turun sampai 3,7-4,0, sedang pada penambahan susu skim pHnya hanya turun sampai 4,2-4,8. Fermentasi sari koro pedang putih dengan kombinasi penambahan 4% susu skim dan 8% sukrosa menghasikan jumlah sel, pH dan kadar asam tertitrasinya sebesar 9,10 log CFU/mL, 4,14-4,30 dan 1,19-1,26. Setelah penyimpanan 14 hari pada suhu 4 °C, jumlah sel relatif tetap, namun terjadi sedikit penurunan pH.
Identification and Composition of Volatile Compounds in Liquid Smoke Derived from Betara Variety of Areca catechu Husk Kamalia Muliyanti; Chusnul Hidayat; Supriyadi Supriyadi
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.63605

Abstract

The seeds of Areca nut plants hold significant economic value, with a remarkable total production of 65,295.89 tons. However, the husk, constituting 50% to 75% of the fruit, are persistently discarded. This study aims to explore the conversion of Areca nut waste into liquid smoke with specific physical properties and chemical composition. It uses GC-MS to identify volatile chemicals in liquid smoke and carries out a distillation process using a glass column containing natural zeolite for purification. Furthermore, the pyrolysis method is employed at a varying temperature of 150 °C, 250 °C, 350 °C, and 450 °C for 3 hours to process the waste into liquid smoke. The study determines the chemical composition of total acid, phenol, and carbonyl, which range from 1.34% to 3.09%, 0.37% to 0.42%, and 6.84% to 7.46%, respectively. The physical properties of crude liquid smoke in terms of yield range from 16.93% to 31.49%, while the color brightness varies from 25.02 to 57.46. The result shows that liquid smoke comprises 13 acidic, 20 carbonyl, and 6 phenolic compounds, contributing to the aroma. In addition, temperature of the pyrolysis process affects the formation of liquid smoke and the corresponding compounds contained in Areca husk.
Penambahan Tepung Ubi Jalar Ungu (Ipomea batatas L) dan Tapioka Sebagai Bahan Pengisi Pembentuk Tekstur Nugget Ikan Lele Novita Herdiana; Susilawati Susilawati; Dyah Koesoemawardani; Eka Rahayu
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.69714

Abstract

Penelitian ini bertujuan untuk menentukan formulasi terbaik tepung ubi jalar ungu dan tapioka terbaik untuk membentuk tekstur nugget ikan. Penelitian dilakukan melalui 2 tahapan yaitu proses pembuatan nugget dan pengujian nugget ikan lele dengan uji Texture Profil Analysis (TPA) menggunakan Texture analyzer meliputi Hardness, Springiness dan Cohesiveness dan pengujian susut masak produk. Nugget ikan lele dengan perbandingan terbaik kemudian dianalisa proksimat meliputi kadar air, kadar abu, kadar karbohidrat, lemak dan kadar protein. Metode yang digunakan Rancangan Acak Kelompok Lengkap (RAKL) dengan faktor tunggal dan 4 ulangan. Perlakuan yang digunakan yakni 6 taraf perbandingan tepung ubi jalar ungu dan tapioka % (b/b) yaitu P0 (0:100), P1(10:90), P2(20:80), P3 (30:70), P4 (40:60) dan P5 (50:50) dan. Data yang diperoleh selanjutnya dianalisis secara statistik dengan menggunakan uji barlett dan tukey lalu dilanjutkan dengan uji ANOVA dan uji BNT dengan taraf 5%. Hasil analisis uji TPA menggunakan Texture analyzer yaitu diperoleh perlakuan terbaik pada perbandingan tepung ubi jalar ungu dan tapioka (40:60)% berpengaruh nyata terhadap parameter hardness, springiness dan cohesivennes  namun tidak berbedanyata pada parameter susut masak dengan nilai hardness 374,13 N, Springiness 10,05 mm dan cohesiveness 1,16 mm serta susut masak produk berkisar 1.39 -1,55 % serta analisis kandungan gizi meliputi kadar air (41,75%), kadar abu (0,27%), kadar protein (9,23%), kadar lemak (9,58%) dan kadar karbohidrat (38,14%). Berdasarkan standar mutu SNI nugget ikan 7758 :2013 bahwa produk nugget hasil subtitusi tepung ubi jalar ungu terbaik telah memenuhi standar.
Analysis of Consumer Preferences for Instant Mangosteen (Garcinia mangostana L.) Powder Drink in Bogor Regency and City Fadhilah Nur'azizah; Dase Hunaefi; Tjahja Muhandri
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.69865

Abstract

The peel of mangosteen (Garcinia mangostana L.) constitutes a larger proportion of the fruit in comparison to its flesh. The peel extract product manufactured by nutraceutical industries does not require using the fruit flesh. To increase the shelf life and value of the product, the development of a mangosteen powder drink can be carried out. Therefore, this research aims to determine the characterization of initial raw materials and factors influencing consumer preferences for instant mangosteen powder drink to improve the acceptance of the product. The data collected were analyzed through descriptive statistics and the chi-square test. Furthermore, the chi-square test showed that demographic regions affected mangosteen fruit price, the level of preferences for the powder drink, consumption time, as well as feelings and interests of potential customers. The results of the Total Plate Count (TPC), Total Yeast and Mold Count (TYMC), and coliform microbiological test conducted on mangosteen purée raw materials met the quality requirements established by National Standardization Body (NSB) for fruit purées.
Identification of Trimyristine from Oil, Crystals, and Residue of Nutmeg (Myristica fragrans) in South Aceh (Indonesia) Using GC-MS Bhayu Gita Bhermana; Sri Nengsih; Heri Hasmizal
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.70430

Abstract

South Aceh Regency is the largest nutmeg-producing area in Aceh Province, Indonesia, but its potential for oil production has not been fully optimized. Nutmeg (Myristica fragrans) oil is one of the essential oil groups obtained from the distillation of the nutmeg plant, including its peel, mace, and seeds. One of the essential compounds found in nutmeg oil is trimyristin. Therefore, this research aimed to identify and determine the content of trimyristin in the oil, crystals, and residue of nutmeg seeds from South Aceh. It was carried out in stages wherein nutmeg oil distillation was performed by a simple distillation method. Trimyristin was separated from the oil using the reflux method and from the residue by the maceration method. The compound was obtained from the isolation of nutmeg oil using chloroform as a solvent. The oil was characterized based on SNI No. 06-2388 of 2006, then trimyristin was isolated and identified by Gas Chromatography-Mass Spectrophotometry (GC-MS). The results showed that the characterization of nutmeg oil did not fulfill the SNI . The color and smell tests were not in accordance with those of nutmeg oil, the specific gravity was 0.909, the refractive index was 1.63, and the solubility in alcohol was cloudy. Trimyristin of 11.23% was only found in the residue, but it was not detected in the oil and crystals.
Keefektifan “ProKlim” dalam Pengendalian Longsor Secara Vegetatif di Kampung Iklim Desa Sambak, Kajoran, Magelang Erny Wibawanti; Junun Sartohadi; Ngadisih Ngadisih; Anggri Setiawan; Djati Mardiatno
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.72009

Abstract

Partisipasi masyarakat Desa Sambak dalam adaptasi dan mitigasi perubahan iklim telah diapresiasi dalam bentuk penghargaan ProKlim. Desa Sambak terletak pada zona transisi Gunung Api Sumbing dan Pegunungan Menoreh sehingga rawan terhadap bencana erosi, longsor dan kekeringan. Penelitian ini berfokus untuk mengevaluasi efektivitas kegiatan ProKlim dalam pengendalian longsor secara vegetatif. Identifikasi sebaran longsor dilakukan dengan metode interpretasi visual foto udara dilanjutkan pemeriksaan lapangan yang digunakan untuk membangun peta kerawanan longsor menggunakan metode frekuensi rasio. Identifikasi lokasi pengendalian longsor secara vegetative dilakukan dengan partisipasi masyarakat dan dilanjutkan delineasi foto udara secara visual. Pola spasial distribusi longsor dan mitigasi longsor secara vegetatif ditentukan dengan metode analisis tetangga terdekat. Analisis keefektifan  ProKlim ditekankan pada identifikasi letak pengendalian longsor melalui kegiatan penanaman pada wilayah rawan longsor. Hasil penelitian menunjukkan bahwa kegiatan penanaman yang dilakukan belum ditempatkan pada zona rawan longsor sehingga mitigasi longsor kurang efektif. Kesimpulan diperoleh dari  42 kejadian  longsor di wilayah kajian didominasi pada: kelerengan 15-25° dan 8-15°; tutupan lahan pertanian lahan kering, semak, dan tanah terbuka; arah hadap lereng tenggara dan timur; profil kurvatur (+) dan (-); jarak dengan jalan 100-200 m dan 200-300 m; dan jarak dengan sungai < 150 m. Dengan nilai AUC (Area under the ROC Curve), validasi model kerawanan sebesar 0,66. Pada sebaran penanaman dalam konteks pengendalian longsor secara vegetatif terdapat pada tutupan lahan kebun campur dan hutan kering sekunder. Pola spasial longsor dan pengendalian longsor secara vegetatif memiliki pola random.
Glycerolysis-intertesterification of Palm Stearin and Nyamplung Oil Mixture in High Shear Continuous Stirred Tank Reactor Bonifasius Rionaldo; Rini Yanti; Chusnul Hidayat
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.72640

Abstract

Glycerolysis-interesterification can be used for the synthesis of products containing high total Mono- and Diacylglycerol (MDAG). Therefore, this study aimed to evaluate the synthesis of products rich in MDAG content using glycerolysis-interesterification method in High Shear Continuous Stirred Tank Reactor (HS-CSTR). The impact of varying material flow rates (6, 10, 14, 18, and 22 mL/min) and processing time on the concentration of MDAG, physical properties of the resulting product, and consistency of product quality throughout the process were assessed. Furthermore, glycerolysis-interesterification reaction was performed at a temperature of 120 °C, with a glycerol and oil mixture mole ratio of 1:5 (mol/mol), 3% NaOH, and a stirring speed of 2000 rpm. Oil mixture consisted of Palm Stearin (PS) and Nyamplung oil (Calophyllum inophyllum) (MC) with a PS:MC mole ratio of 80:20 (mol/mol). Subsequently, the acylglycerol concentration and physical properties of the product were analyzed. The results showed that the material flow rate had a significant effect on MDAG and the physical properties of the product. The highest MDAG was obtained at a flow rate of 6 mL/min with content of 58.56±0.91%, and Slip Melting Point (SMP) of 41.44±0.08 °C and 42.9±0.03 °C. The hardness, emulsion capacity, and stability values were 10.88±0.22 N, 85.2±6.93%, and 88.7±5.00%, respectively. The acylglycerol concentration and physical properties of the product did not significantly fluctuate throughout the process, indicating that the process had achieved a steady state condition.
Optimization of Cookies Formulation Based on Composite Flour of Sorghum (Sorghum bicolor L), Breadfruit (Artocarpus communis), and Peanut (Arachis hypogaea L.) Hasnelly Hasnelly; Wisnu Cahyadi; Peggie Haly Al-Fatihah
agriTECH Vol 43, No 2 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.73467

Abstract

This study investigates the challenges associated with making cookies using wheat flour as the primary raw material. Due to the difficulty in cultivating wheat seeds in the region, alternative sources of flour, such as sorghum, breadfruit, and peanuts, need to be explored to diversify the food supply. Therefore, this study aims to assess the level of the desired characteristics achieved from the composite of sorghum, breadfruit, and peanut flour cookies using the Design-Expert program and the D-optimal Mixture method. To evaluate the responses, chemical, organoleptic, and physical properties are examined, including water content, protein content, fat content, carbohydrate content, color, aroma, texture, taste, and hardness. Furthermore, the optimal formula, generated by the program, contains 23.298% sorghum, 7.869% breadfruit, and 18.843% peanut flour, with an accuracy value of 0.653. The results show that the optimal formula for cookies based on the composite flour has the desired characteristics and complies with the SNI standards 2973-1992 and 2973-2011.

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