cover
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
agriTECH
ISSN : 02160455     EISSN : 25273825     DOI : 10.22146/agritech
Core Subject : Agriculture,
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).
Articles 1,392 Documents
Karakteristik Minyak Campuran Red Palm Oil dengan Palm Kernel Olein Maria Ulfah; Adi Riswanto; Ngatirah Ngatirah
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.581 KB) | DOI: 10.22146/agritech.12858

Abstract

Characteristics of oil blends has been produced from red palm oil (RPO) and palm kernel olein (PKOo) with seven ratios with a total of 100, namely A (0:100), B (25:75), C (40:60), D (50:50), E (60:40), F (75:25) and G (100:0) v/v investigated with randomized complete block design. The result showed that different of ratio levels RPO and PKOo have some effects on peroxide value, saponification value, melting point, cloud point and β-carotene content from RPO-PKOo oil blends, but has not effect on free fatty acid content. Higher level of PKOo content on formulas oil blends were decreased of saponification value and melting point, but was increased of cloud point. The best of RPOPKOo oil blends has been obtained at ratio 50:50 (v/v), with 459.52 ppm β-carotene, 1.35 meq/kg peroxide value, 0.09 % free fatty acid, 202.60 saponification value, 24.15 oC melting point and 7.15 oC cloud point. Fatty acids composition were 1.24 % capric acid, 29.00 % lauric acid, 10.09 % miristic acid, 23.10 % palmitic acid, 5.84 linoleic acid, 27.30 % oleic acid and 3.43 % stearic acid.ABSTRAKSifat-sifat minyak campuran yang dihasilkan dari red palm oil (RPO) dan palm kernel olein (PKOo) dengan tujuh tingkat rasio yang totalnya 100, yaitu A (0:100), B (25:75), C (40:60), D (50:50), E (60:40), F (75:25) dan G (100:0) (v/v) dikaji menggunakan rancangan acak lengkap kelompok. Hasil penelitian menunjukkan bahwa rasio RPO:PKOo mempengaruhi angka peroksida, angka penyabunan, melting point, cloud point dan kadar β-karoten dari minyak campuran RPO-PKOo yang dihasilkan, namun tidak mempengaruhi kadar asam lemak bebas. Peningkatan jumlah PKOo yang ditambahkan dalam minyak campuran RPO-PKOo, akan menurunkan angka penyabunan dan melting point, namun akan menaikkan cloud point. Produk minyak campuran RPO-PKOo terbaik diperoleh pada rasio 50:50 (v/v), dengan kadar β-karoten 459,52 ppm, angka peroksida 1,35 meq/kg, asam lemak bebas 0,09 %, angka penyabunan 202,60, melting point 24,15 oC dan cloud point 7,15 oC, serta komposisi asam lemak (kaprat 1,24 %, laurat 29,00 %, miristat 10,09 %, palmitat 23,10 %, linoleat 5,84 %, oleat 27,30 % dan stearat 3,43 %).
Pemanfaatan Fraksi Kaya Asam Laurat Hasil Hidrolisis dari Endosperm Kelapa Menggunakan Lipase Endogeneus Sebagai Pengawet Susu Kedelai Kemasan Moh. Su'i; Enny Sumaryati; Dani Dwi Sucahyono
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.356 KB) | DOI: 10.22146/agritech.12859

Abstract

Results of previous studies show that the high lauric fraction isolated from coconut endosperm is able to inhibit pathogenic and non-pathogenic bacteria. This research aims to study the addition of high lauric fraction that hydrolysed of coconut endosperm of the storability of soy milk packaging. High lauric fraction isolated from coconut milk, then the fraction analized of the fatty acid composition with gas chromatography (GC) and then used as a preservative soy milk. The fraction is added to the soy milk with concentrations of 0, 10, 15 and 20%, then stored for 3 days. Every day is observed until soy milk damaged. The results showed that the fraction isolated from coconut milk contains 50.45% lauric acid, 17.52% myristic acid, 7.02% palmitic acid, 6.46% capric acid, 5.52% caprylic acid, 5.12% linoleic acid, 1.89% oleic acid, and 0.11% caproic acid. The addition of lauric acid-rich fraction of 20% were able to preserve soy milk for 2 days with a total microbe 1.00 x 104 cfu/ml, free fatty acids 0.12 m mol/ml, pH 5.05 and a balanced aroma 4 (nice).ABSTRAKHasil penelitian sebelumnya menunjukkan bahwa fraksi kaya asam laurat hasil isolasi dari endosperm kelapa mampu menghambat bakteri patogen dan non patogen. Penelitian ini bertujuan mempelajari penambahan fraksi kaya asam laurat hasil hidrolisis dari endosperm kelapa terhadap daya simpan susu kedelai kemasan. Fraksi yang kaya asam laurat diisolasi dari santan kelapa kemudian fraksi tersebut diuji komposisi asam lemaknya menggunakan chromatografi gas (GC) dan selanjutnya digunakan sebagai bahan pengawet susu kedelai. Fraksi kaya asam laurat ditambahkan ke dalam susu kedelai dengan konsentrasi 0, 10, 15 dan 20%, kemudian disimpan selama 3 hari. Setiap hari dilakukan pengamatan hingga susu mengalami kerusakan. Hasil penelitian menunjukkan bahwa fraksi hasil isolasi dari santan kelapa mengandung asam laurat 50,45%, asam miristat 17,52%, asam palmitat 7,02%, asam kaprat 6,46%, asam kaprilat 5,52%, asam linoleat 5,12%, asam oleat 1,89% dan asam kaproat 0,11%. Penambahan fraksi kaya asam laurat sebesar 20% mampu mengawetkan susu kedelai selama 2 hari dengan total mikroba 1,00 x 104 cfu/ml, asam lemak bebas 0,12 m mol/ml, pH 5,05 dan skor aroma 4 (menyukai).
Sifat Fisik, Kimia, dan Fungsional Tepung Jagung yang Diproses Melalui Fermentasi Nur Aini; Gunawan Wijonarko; Budi Sustriawan
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.371 KB) | DOI: 10.22146/agritech.12860

Abstract

Corn flour has some limitations to be developed as food products. To expand the use of corn flour for food production, some modifications on its characteristic were needed. The production of corn flour by fermentation may change its characteristics; therefore could expand the application of corn flour to develop food products. The aim of this study was to determine the effect of fermentation media and fermentation time on physical, chemical and functional characteristics of corn flour. This research was performed using factorial randomized block design. The studied factors were: fermentation medium (water, lactic acid bacteria, Lactobacillus casei, and ‘ragi tape’) and fermentation time (20, 40, 60, and 80 h). The results of this research showed that corn flour produced by fermentation using Lactobacillus casei for 60 h has the best functional properties (based on gelatinization properties). The gelatinization properties of this corn flour were: the initial gelatinization temperature of 72 °C, maximum viscosity of 1646 BU, gelatinization peak temperature of 74 oC, breakdown viscosity of 402 BU and setback viscosity 1575 BU. The corn flour has a moisture content of 7.68%, ash content of 0.27%, soluble protein content of 2.48%, total protein of 8.27%, amylose content of 33.10%, water absorption capacity of 117.80%, oil absorption capacity of 149.50% and swelling power of 13.80%.ABSTRAKTepung jagung memiliki beberapa keterbatasan untuk dikembangkan menjadi produk pangan. Untuk memperluas penggunaannya dalam bidang pangan, tepung jagung perlu dimodifikasi. Pembuatan tepung jagung menggunakan proses fermentasi diharapkan mampu mengubah karakteristiknya sehingga memperluas aplikasi tepung ini sebagai produk pangan. Penelitian ini bertujuan untuk mengetahui pengaruh media fermentasi dan lama fermentasi terhadap karakteristik fisik, kimia dan fungsional tepung jagung. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial. Faktor yang dicoba yaitu media fermentasi (air, bakteri asam laktat, Lactobacillus casei, dan ragi tape) dan waktu fermentasi (20, 40, 60, dan 80 jam). Hasil penelitian menunjukkan bahwa tepung jagung yang memiliki sifat fungsional terbaik (dilihat dari sifat gelatinisasinya) adalah tepung jagung yang dihasilkan dengan metode fermentasi menggunakan Lactobacillus casei selama 60 jam. Sifat gelatinisasi tepung jagung tersebut adalah: suhu awal gelatinisasi 72 oC, viskositas maksimum 1646 BU, suhu puncak gelatinisasi 74 oC, breakdown viscosity 402 BU dan setback viscosity 1575 BU. Tepung jagung memiliki kadar air 7,68%, kadar abu 0,27%, kadar protein terlarut 2,48%, protein total 8,27%, kadar amilosa 33,10%, kapasitas penyerapan air 117,80%, kapasitas penyerapan minyak 149,50%, dan swelling power 13,80%.
Pengaruh Degradasi Enzim Proteolitik terhadap Aktivitas Angiotensin Converting Enzyme Inhibitor Bekasam dengan Lactobacillus plantarum B1765 Prima Retno Wikandari; Lenny Yuanita
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.668 KB) | DOI: 10.22146/agritech.12861

Abstract

This research studied the effect of digestive enzyme degradation on the Angiotensin Converting Enzyme Inhibitor (ACEI) activity and the stability of bekasam peptide and ACEI activity. Water extract of bekasam was subjected to pepsin and trypsin. The stability of peptide was measured from the changes of peptide concentration before and after treatment by those enzymes. The stability of ACEI activity was measured by hypuric acid liberated from Hip-His-Leu as ACE substrate and determined by spectrophotometer. The results showed that proteolytic enzyme degradation did not affect the concentration of peptide (p>0,05) and the mean concentration 36.72. It was closely related with the ACEI activity that did not change significantly before and after digestion by pepsin and trypsin (p>0,05) and the mean ACEI activity was 70.73. It showed that ACEI activity of bekasam did not change by the degradation of digestive enzyme.ABSTRAKPenelitian ini bertujuan untuk mengkaji pengaruh degradasi enzim pencernaan proteolitik terhadap stabilitas peptida dan aktivitas Angiotensin Converting Enzyme Inhibitor (ACEI) bekasam yang difermentasi dengan kultur starter Lactobacillus plantarum B1765. Terhadap ekstrak bekasam diberi perlakuan enzim proteolitik pepsin dan tripsin. Pengujian stabilitas peptida diukur dengan ada tidaknya perubahan jumlah peptida setelah perlakuan enzim menggunakan metode formol, sedangkan aktivitas ACEI dilakukan dengan mengetahui jumlah asam hipurat dari substrat Hip-His-Leu yang dibebaskan oleh ACE diukur dengan spektrofotometer. Hasil pengujian menunjukkan perlakuan enzim proteolitik tidak berpengaruh pada konsentrasi peptida dengan p>0,05 dengan nilai rata-rata konsentrasi peptida sebesar 36,72. Hal ini berkorelasi dengan aktivitas ACEI yang juga menunjukkan tidak ada pengaruh antara perlakuan sebelum dan setelah degradasi enzim (p>0,05) dengan rata-rata aktivitas ACEI sebesar 70,73. Hasil penelitian ini menunjukkan bahwa aktivitas ACEI bekasam tidak berubah jika mengalami degradasi enzim pencernaan.
Kinetika Oksidasi Minyak Ikan Tuna (Thunus sp) Selama Penyimpanan Rahim Husain; Suparmo Suparmo; Eni Harmayani; Chusnul Hidayat
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.234 KB) | DOI: 10.22146/agritech.12862

Abstract

Tuna fish oil (Thunnus sp) contains omega-3 fatty acids. It can be easily damaged by oxidation during storage. The rate of oxidation can be estimated by zero or first order of reaction. This research aimed to study the oxidation reaction during storage by determining the amount of activation energy (Ea) and constant change (k). The results showed that the value of k increases from 0.11 to 2.07 at a temperature 0 oC for the peroxide value while the numbers of TBA and acid number, respectively 0.041 increased 1.002, and k value of the acid number of 0.02 to 0.30 to 10, 20, 30 anda 40 oC. The activation energy (Ea) of oxidation reaction produced 50.07 Kj/mol.K peroxide value; 42.43 Kj/mol.K acid value and 57.69 Kj/mol.K. TBA value. The kinetic study showed an increasing oxidative deterioration of tuna fish (Thunnus sp) oil during storage by following the reactions of zero order or the reaction occurred slowly.ABSTRAKMinyak ikan tuna (Thunnus sp) mengandung asam lemak omega-3, sehingga mudah rusak akibat oksidasi selama penyimpanan. Kecepatan reaksi oksidasi dapat didekati melalui reaksi orde ke nol maupun orde pertama. Penelitian ini bertujuan untuk mempelajari reaksi oksidasi selama penyimpanan dengan menentukan besaran energi aktivasi (Ea) dan konstanta perubahan (k). Hasil menunjukkan bahwa nilai k meningkat dari 0,11 menjadi 2,07 pada suhu 0 oC untuk angka peroksida, angka TBA dan angka asam adalah 0,041 menjadi 1,002 dan 0,02 menjadi 0,30, yang terjadi pada suhu 10, 20, 30, dan 40 oC. Energi aktivasi (Ea) reaksi oksidasi yang menghasilkan angka peroksida 50,07 Kj/mol.K; angka asam 42,43 Kj/mol.K dan TBA 57,69 Kj/mol.K. Studi kinetika memperlihatkan bahwa terjadi peningkatan laju reaksi kerusakan oksidasi minyak ikan tuna (Thunus sp) selama penyimpanan dengan mengikuti reaksi orde ke nol atau reaksi berlangsung secara lambat.
Optimasi Konsentrasi Ekstrak Kayu Secang dan Campuran Pasir Kuarsa dengan Kulit Kerang yang Digunakan pada Pembuatan Kompon Karet Rahmaniar Rahmaniar; Amin Rejo; Gatot Priyanto; Basuni Hamzah
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (599.155 KB) | DOI: 10.22146/agritech.12863

Abstract

This study aimed to obtain the optimum concentration of Sappan Wood Extract, Quartz Sand and Clamshell mixture. For this purpose, Response Surface Methodology (RSM) was used to optimize the factors which influenced the quality of rubber compound. There were two factors to be observed in this study. They were the concentration of Sappan ood Extract (8 phr, 9 phr and 10 phr) and the mixture Quartz Sand and Clamshell (63:37, 73:27 and 83:17). The observed parameters were the hardness, the tensile strength and the elongation at break. The results of the study showed that the optimum hardness was reached at the treatment combination of 8.55 phr for the Sappan Wood Extract and 77.7:22.3 for the mixture of Quartz Sand and Clamshell mixture. Furthermore, the optimum tensile strenght was obtained at the treatment combination of 8.48 phr for the Sappan Wood Extract and 60.3:39.7 for the mixture of quartz sand and seashell. Finally, the optimum elongation at break was reached at the treatment combinatioan of 9,55 phr for the sappan wood extract and 70.65:29.35 for the mixture of of quartz sand and clamshell. Based on these three parameters, the optimum usage of sappan wood extract, quartz sand and clamshell mixture in the making of rubber compound was reached in the proportion of 8.48 phr–9.55 phr for the sappan wood extract, and 60:39.7; 77.7:22.3 for the mixture of quartz sand and clamshell.ABSTRAKPenelitian ini bertujuan untuk mendapatkan konsentrasi ekstrak kayu secang dan campuran pasir kuarsa dan kulit kerang yang optimum. Metode Respon Surface Methodology (RSM) digunakan untuk mengoptimalkan faktor-faktor yang berpengaruh terhadap mutu kompon karet. Dua faktor yang diteliti terdiri dari konsentrasi ekstrak kayu secang (8, 9 dan 10 phr) dan campuran pasir kuarsa dan kulit kerang (63:37, 73:27 dan 83:17). Parameter yang diamati adalah kekerasan, tegangan putus dan perpanjangan putus. Hasil penelitian menunjukkan kekerasan yang optimum dicapai pada kombinasi perlakuan ekstrak kayu secang dan campuran silika pasir kuarsa dan kulit kerang 8,55phr dan 77,7:22,3. Tegangan putus yang optimum dicapai pada kombinasi perlakuan ekstrak kayu secang dan campuran pasir kuarsa dan kulit kerang 8,48 phr dan 60,3:39,7, sedangkan parameter perpanjangan putus yang optimum dicapai pada kombinasi perlakuan ekstrak kayu secang dan campuran pasir kuarsa dan kulit kerang 9,55 phr dan 70,65:29,35, sehingga kondisi optimum penggunaan konsentrasi ekstrak kayu secang dan campuran pasir kuarsa dan kulit kerang pada pembuatan kompon karet berdasarkan ke tiga parameter tersebut dicapai dengan proporsi ekstrak kayu secang dan campuran pasir kuarsa dan kulit kerang optimum 8,48-9,55 phr dan 60:39,7; 77,7:22,3 phr.
Potensi Spaghettini Komposit Semolina Durum-Pati Ganyong dalam Pembentukan Short Chain Fatty Acid dan Asam Laktat pada Fermentasi Menggunakan Mikroflora Feses Manusia Stefani Amanda Harmani; Haryadi Haryadi; Muhammad Nur Cahyanto; Yudi Pranoto
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.863 KB) | DOI: 10.22146/agritech.12864

Abstract

Nowadays people have started considering the health beneficial value in selecting food. Government’s demand for utilization of local food and food diversification is also increasing. Considering those reasons, the objective of this study was to create a way of food diversification using local ingredient which has physiological benefits for human health. Resistant starch can improve human colonic health through fermentation by colonic microflora to produce Short Chain Fatty Acid (SCFA) and lactic acid. This research was conducted by combining canna starch with semolina durum into a composite flour for spaghettini production. Various type of canna tuber and canna starch proportion were used in the composite flour. Semolina durum contained higher resistant starch (20%) than red canna starch (17.7%) and green canna starch (15.4%). Combination of durum and red canna starch-based spaghettini produced higher amount of resistant starch, SCFA, and lactic acid than combination of durum and green canna starch- based spaghettini. Durumcanna based spaghettini had the ability to produce SCFA and lactic acid during in vitro fermentation using human colonic microflora although the concentration was lower than those of only durum spaghettini.ABSTRAKKriteria pemilihan makanan oleh masyarakat kini mulai mempertimbangkan nilai kesehatan dari suatu makanan. Sementara, permintaan pemerintah untuk pemanfaatan bahan baku lokal dan diversifikasi pangan pokok pun semakin meningkat. Oleh karena itu, penelitian ini dilaksanakan untuk mewujudkan penganekaragaman pangan berbasis tepung komposit dari bahan baku lokal yang memiliki nilai fungsional untuk kesehatan kolon. Resistant Starch (RS) dapat meningkatkan kesehatan kolon melalui hasil fermentasinya oleh bakteri usus besar yang berupa Short Chain Fatty Acid (SCFA) dan asam laktat. Penelitian dilakukan dengan mengkombinasikan pati ganyong dan semolina sebagai bahan dasar pembuatan spaghettini. Variasi yang digunakan ialah variasi jenis umbi ganyong serta variasi jumlah pati ganyong dalam tepung komposit. Kadar RS semolina (20%) lebih tinggi daripada kadar RS pati ganyong ungu (17,7%) dan pati ganyong hijau (15,4%). Kadar RS, SCFA, dan asam laktat yang dihasilkan spaghettini durum-pati ganyong ungu lebih besar daripada spaghettini durum-pati ganyong hijau. Spaghettini komposit durum-pati ganyong mampu menghasilkan SCFA dan asam laktat melalui fermentasi in vitro menggunakan mikroflora feses manusia dengan kadar yang lebih rendah daripada spaghettini 100% durum.
Kajian Isolat Bakteri Asam Laktat dalam Menurunkan Kolesterol Secara In Vitro dengan Keberadaan Oligosakarida Yati Maryati; Lilis Nuraida; Ratih Dewanti Hariyadi
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.675 KB) | DOI: 10.22146/agritech.12865

Abstract

This work evaluated the abilities of five isolates of lactic acid bacteria (LAB) from different sources, i.e Lactobacillus fermentum S21209 and Lactobacillus plantarum 1-S27202 from tempe, Lactobacillus rhamnosus R23 and Pediococcus pentosaceus 1-A38 from human breast milk and a commercially available human isolates Lactobacillus acidophilus FNCC0051 in lowering cholesterol by in vitro and metabolizing the prebiotic oligosaccharide compounds. The effects of oligosaccharide compounds on the performance of the LAB isolates in lowering cholesterol were also evaluated. The tests were done in MRS based medium in vitro with or without oligosaccharides i.e. galactooligosacharrides (GOS), fructooligosaccharides (FOS), inulin, hydrolyzed inulin or combination of oligosaccharides as prebiotics. The results revealed that all isolates were able to reduce cholesterol in the medium, and the highest cholesterol reduction was observed for L. acidophilus FNCC0051 and L. rhamnosus R23. There are two different mechanism in the loweringof cholesterol; cholesterol assimilation and cholesterol binding on the cell surface. For the case of P. pentosaceus 1-A38, it involves the assimilation, while the other four isolates may involve cholesterol binding on the cell surface. In addition, the tested LAB’s has different ability to use prebiotics, as shown by the reduction of total sugar in the medium. Oligosaccharides metabolism by L. acidophilus FNCC0051 and L. rhamnosus R23 resulted in several organic acid and SCFA with lactic acid produced as the largest proportion followed by acetic acid. Furthermore, the proportion of propionic and butyric acids were influenced by the type of isolates and carbon source. L. acidophilus FNCC 0051 was able to reduce cholesterol in the MRS based medium with oligosaccharides and their combination as carbon source and cholesterol reducing ability seems to involve both assimilation and cholesterol binding on the cell surface.ABSTRAKPenelitian ini mengevaluasi lima isolat bakteri asam laktat (BAL) dari sumber yang berbeda, yaitu Lactobacillus fermentum S21209 dan Lactobacillus plantarum 1-S27202 dari tempe, Lactobacillus rhamnosus R23 dan Pediococcus pentosaceus 1-A38 dari ASI dan isolat komersial Lactobacillus acidophilus FNCC 0051 dari percernaan manusia dalam kemampuannya menurunkan kolesterol secara in vitro dan kemampuannya memetabolisme senyawa oligosakarida prebiotik. Pengaruh senyawa oligosakarida terhadap kemampuan isolat BAL terpilih untuk menurunkan kolesterol juga dievaluasi. Pengujian dilakukan pada media berbasis MRS dengan atau tanpa oligosakarida terdiri dari galaktooligosakarida (GOS), fruktooligosakarida (FOS), inulin, hidrolisat inulin atau kombinasi oligosakarida sebagai prebiotik. Hasil penelitian menunjukkan bahwa semua isolat mampu menurunkan kolesterol, dan penurunan kolesterol tertinggi ditunjukkan oleh isolat L. acidophilus FNCC0051 dan L. rhamnosus R23. Penurunan kolesterol diduga terjadi melalui dua cara yang berbeda. Mekanisme penurunan kolesterol oleh isolat P. pentosaceus 1-A38 melibatkan asimilasi kolesterol, sedangkan pada keempat isolat lainnya kemungkinan melibatkan pengikatan kolesterol pada permukaan sel. Selain itu, isolat BAL juga memiliki kemampuan yang berbeda dalam memanfaatkan oligosakarida prebiotik, terlihat pada penurunan total gula dalam medium. Metabolisme senyawa oligosakarida oleh L. acidophilus FNCC0051 dan L. rhamnosus R23 menghasilkan beberapa asam organik termasuk SCFA dengan proporsi terbesar asam laktat diikuti oleh asam asetat. Selain itu, proporsi asam propionat dan butirat dipengaruhi oleh jenis isolat dan sumber karbon. L. acidophilus FNCC 0051 mampu menurunkan kolesterol dalam media berbasis MRS dengan keberadaan oligosakarida baik tunggal maupun kombinasi sebagai sumber karbon dan melibatkan mekanisme baik asimilasi dan pengikatan kolesterol pada permukaan sel.
Keragaman Pangan Lokal di Pulau Lombok untuk Menunjang Pengembangan Pariwisata Zainuri Zainuri; Abbas Zaini; Wiharyani Werdiningsih; Taslim Sjah
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.278 KB) | DOI: 10.22146/agritech.12866

Abstract

Lombok Island is potential in providing agricultural raw materials that can be developed into local food products that in turn support the development of tourism in this island. This study aimed at identifying kinds of local food products available in Lombok Island, and their quantity. To achieve these purposes, research was designed in descriptive method such that the study revealed the picture of the situation of local food in Lombok Island. Data analyses were follow-on, and revealed that there are several local foods made of/from agricultural raw materials. They have various production values, and there ais adjustment of production (supply) to demand that exists. Some major local food products include ’Bulayak’ satay and kerupuk kulit (animal skin crackers). There are also products that are typical to Lombok Island, i.e. Bulayak satay, Taliwang chicken, Tanjung satay (of fish)(from North Lombok), Opak-opak (sort of cracker), pelecing kangkung (traditional Lombok salad), and jajan bantal (made of mix glutinised rice and bananas) (from East Lombok).ABSTRAKPotensi hasil pertanian sangat besar untuk dikembangkan menjadi produk pangan lokal yang dapat mendukung pengembangan pariwisata daerah, dan saat ini telah ada beberapa produk pangan lokal direalisasikan di berbagai wilayah di Pulau Lombok. Tujuan dari tulisan ini antara lain untuk: (1) mengidentifikasi keragaman pangan lokal yang ada di Pulau Lombok, dan (2) mengetahui jumlah ketersediaan pangan lokal di Pulau Lombok.Untuk mencapai tujuan penulisan ini telah dilakukan penelitian yang dirancang untuk mendeskripsikan kondisi yang ada, dengan melakukan survei ke lokasi-lokasi yang dapat memberikan data yang dibutuhkan.Selanjutnya data yang diperoleh dianalisis sesuai dengan kebutuhan penelitian. Hasil kajian menunjukkan bahwa di Pulau Lombok terdapat beberapa produk pangan lokal dengan nilai produksi (omzet penjualan) yang bervariasi dari yang besar hingga yang kecil. Besar-kecilnya produksi produk pangan lokal ini terjadi karena produsen menyesuaikan diri dengan permintaan yang ada. Beberapa produk yang menonjol (dihitung dari nilai produksinya) di seluruh Pulau Lombok adalah sate bulayak dan kerupuk kulit. Produk-produk pangan lokal yang dinilai mempunyai kekhasan Pulau Lombok adalah sate bulayak, ayam Taliwang, sate Tanjung (Lombok Utara), opak-opak, pelecing kangkung, dan jajan bantal (Lombok Timur).
Pengaruh Tingkat Kerusakan Jalan Perkebunan dan Posisi Tandan Buah Segar di Bak Truk terhadap Kinerja Angkutan Kelapa Sawit Andreas Wahyu Krisdiarto; Lilik Sutiarso
agriTECH Vol 36, No 2 (2016)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.023 KB) | DOI: 10.22146/agritech.12867

Abstract

Oil Palm fresh fruit bunch (FFB) transportation is a vital step in post harvest process. Transportation condition may affects the quantity and quality of FFB as a palm oil factory raw material. Due to many estate roads are not at ideal condition, this research was addressed to explore the relationship between road damage level and position of FFB in truck bin to transportation performance. Transportation performance indicator were leftover fruit, level of released fruitlets, fruits bruise index, and free fatty acid (FFA) content. The research divided into two stage. The first was on transportation performance in collection road. The second was FFB transportation from fruit collection point to factory, which was treated on good, moderate, and bad road. Observation was done to the FFB at bottom, middle and upper layer of truck bin. The transportation performace indicators were analized by Anova, and continued by Tukey method analysis if there were differentces among treatments. Result showed that level of road damage was significantly affect transportation performace indicator i.e level of leftover fruits, but it was not significantly affect level of released fruitlets, fruits bruise index, and FFA content. Meanwhile, FFB position in truck bin influenced level of fruitlets releasing, and significantly influenced fruits bruise index.ABSTRAKPengangkutan tandan buah segar (TBS) kelapa sawit merupakan satu tahap penting dalam proses pascapanen. Kondisi pengangkutan menentukan kuantitas dan kualitas TBS sebagai bahan baku pabrik kelapa sawit. Mengingat masih banyak jalan perkebunan yang belum ideal, penelitian ini bertujuan mempelajari hubungan tingkat kerusakan jalan dan penempatan TBS di bak truk terhadap kinerja pengangkutan. Indikator kinerja pengangkutan yang digunakan adalah buah restan (tertinggal di kebun), kadar asam lemak bebas (ALB), tingkat pelepasan buah (membrondol), dan tingkat memar (indeks memar). Penelitian dibagi menjadi dua tahap, yaitu: 1) kinerja pengangkutan dari piringan pohon ke tempat pengumpulan hasil (TPH). 2) kinerja pengangkutan dari TPH ke pabrik. Perlakuan dalam penelitian tahap dua adalah kualitas jalan pengumpulan, yaitu jalan baik, sedang, dan buruk, dan posisi TBS di bak truk, yaitu di lapisan dasar, tengah, dan atas. Hubungan panjang jalan rusak dengan tingkat restan buah dianalisis dengan analisis regresi, sedang indikator kinerja pengangkutan dianalisis dengan analisis varians (Anova), dan kemudian dilanjutkan dengan analisis satu arah pembedaan antar perlakuan dengan metode Tukey. Hasil penelitian menunjukkan bahwa kondisi atau tingkat kerusakan jalan memberikan pengaruh terhadap indikator kinerja pengangkutan tingkat buah restan, namun tidak secara nyata berpengaruh terhadap tingkat pelepasan buah sawit dari tandan (pembrondolan), tingkat kerusakan buah (indeks memar) dan kadar ALB pada saat pengangkutan menggunakan truk bak kayu. Sedang posisi TBS di dalam bak truk berpengaruh cukup nyata terhadap tingkat pelepasan buah dari tandan, dan berpengaruh nyata terhadap indeks memar buah selama pengangkutan.

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