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Published by Universitas Brawijaya

ISSN : 14115131 EISSN : 25282794 DOI : -

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Computer Science & IT

Jurnal Teknologi Pertanian diterbitkan oleh Fakultas Teknologi Pertanian Universitas Brawijaya untuk penyebarluasan hasil penelitian yang dilakukan oleh para peneliti dari dalam dan luar Fakultas Teknologi Pertanian Universitas Brawijaya. Jurnal Teknologi Pertanian terbit tiga kali dalam setahun, memuat tulisan hasil penelitian yang termasuk dalam lingkup disiplin ilmu pengetahuan yang terkait dengan Ilmu-ilmu Teknologi Pertanian guna menunjang pengembangan ilmu pengetahuan dan teknologi serta pembangunan nasional.

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Search results for , issue "Vol. 23 No. 1 (2022)" : 7 Documents clear

EFEKTIVITAS DAUN AFRIKA (Vernonia amygdalina Del) DALAM MEREDUKSI KANDUNGAN FORMALIN DAN KUALITAS FILLET IKAN NILA (Oreochromis niloticus) Eva Mayasari; Kartini Kartini; Maherawati Maherawati; Suko Priyono
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Formalin sebagai bahan pengawet pada ikan umum digunakan untuk memperpanjang masa simpan, namun penggunaan formalin berdampak buruk bagi kesehatan. Daun Afrika memiliki senyawa saponin yang mampu mereduksi kadar formalin. Penelitian ini bertujuan mengetahui efektivitas perendaman ekstrak daun Afrika (Vernonia amygdalina Del) untuk mereduksi kandungan formalin pada fillet ikan Nila (Oreochromis niloticus). Penelitian ini menggunakan Rancangan Acak Lengkap dengan satu faktor yaitu konsentrasi ekstrak daun Afrika (0%, 1%, 2%, 3%, 4%, dan 5%), dengan 3 kali ulangan. Identifikasi saponin pada ekstrak daun Afrika dianalisis secara kualitatif menggunakan metode Forth. Fillet ikan Nila direndam selam 30 menit ke dalam ekstrak daun Afrika pada masing-masing konsentrasi. Penurunan kadar residu formalin diuji secara kuantitatif menggunakan metode pereaksi Schiff. Hasil menunjukkan bahwa ekstrak daun Afrika pada konsentrasi 1%, 2%, 3%, 4%, 5% teridentifikasi senyawa saponin. Perendaman fillet ikan Nila berformalin ke dalam ekstrak daun Afrika efektif dan berpengaruh positif terhadap reduksi kadar formalin. Konsentrasi ekstrak daun Afrika 5% memiliki kadar formalin terendah sebesar 0,73 mg/Kg masih di bawah ambang batas International Program on Chemical Safety sebesar 1,5–14 mg/Kg, demikian juga kadar abu sebesar 1,04% sesuai dengan mutu ikan segar Standar Nasional Indonesia 01-2354.1-2006 yaitu kurang dari 2%. Formalin used as preservative fish is generally carried out to extend shelf life. However, the use of formalin has an adverse effect on health. Saponin compounds contained in African leaves are able to reduce formalin content. This study aims to determine the effectiveness of immersing African leaf (Vernonia amygdalina Del) extract to reduce the formalin content in tilapia (Oreochromis niloticus) fillets. The experimental design used a completely randomized design with one factor, the concentration of African leaf extract (0%, 1%, 2%, 3%, 4%, and 5%), with three-time replications. Saponin identification in African leaf extract was analyzed qualitatively using the Forth method. Tilapia fillets were immersed for 30 minutes into the African leaf extract at each concentration. The reduction in formalin content was tested quantitatively by Schiff reagent method. The results showed that the African leaf extract at a concentration of 1%, 2%, 3%, 4%, 5% identified saponin compounds. Immersion of formalin tilapia fillets into African leaf extract was effective and significantly affects reducing formalin content. The concentration of 5% African leaf extract had the lowest formalin content of 0,73 mg/Kg below the threshold of International Program on Chemical Safety 1,5-14 mg/Kg, as well as ash content of 1,04% according to the quality of fresh fish Indonesian National Standard 01-2354.1-2006 is less than 2%.

RED ONION (Allium ascalonicum) PEEL EXTRACT AS A NATURAL SOURCE OF ANTIOXIDANTS TO ENHANCE THE OXIDATION STABILITY OF REFINED BLEACHED DEODORIZED PALM OIL (RBDPO) Destia Ayu Prameswari; Dela Retno Maryuni; Saffarina Dini Astari; Salsabila Permata Sari; Desiana Nuriza Putri
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

The repeated use of cooking oil can trigger chemical reactions that cause the cooking oil to be unstable to heat. Red onion peel may be an antioxidant because it contains flavonoid compounds, polyphenols, saponins, and alkaloids that scavenge free radicals. This study aims to prove the use of natural antioxidant concentrations of onion peel. This study used a completely randomized design (CRD) consisting of 5 treatments of onion peel extract, namely 3% (P1), 6% (P2), 9% (P3) 12% (P4), without treatment (P-), and the addition of 0,1% BHT (P+) with consecutive times. The ability of antioxidant of onion peel extract is known to be able to maintain the stability of cooking oil compared to an antioxidant synthetic BHT. Peroxide in extract oil 9% (6.65 meq/kg), Total Oxidation in extract oil 9% (15.92 meq/kg), P-anisidine in extract oil 3% and 9% (3.54 meq/kg) /kg and 3.92 meq/kg) and the iodine value of the extract oil 3%, and 9% (21.41 mg iodine/g and 20.81 mg iodine/g). It was found that natural antioxidants of onion peel extract showed better primary oxidation inhibition ability than synthetic antioxidants BHT and among the five types of antioxidant concentrations, antioxidants from onion peel extract 9% showed the best oxidation inhibition ability. So that it can be obtained that the addition of onion peel extract is used as a natural antioxidant to maintain the stability of the oil against heat

PENGARUH TRIMMING DAN PENGEMPAAN TERHADAP KUALITAS DAN DAYA SIMPAN CABAI RAWIT MERAH (Capsicum frutescens L.) DALAM BENTUK CABAI KERING DAN CABAI BUBUK Yul Harry Bahar; Annisa Nur Ichniarsyah
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Cabai merupakan komoditas utama dan salah satu fokus kegiatan pembinaan pertanian, karena sangat berpengaruh pada fluktuasi harga dan inflasi. Petani dan pelaku usaha sudah berhasil dalam teknologi produksi, akan tetapi aspek penanganan pascapanen dan pengolahan hasil masih tertinggal. Penelitian ini menjawab permasalahan tersebut dengan menggali teknologi tepat guna untuk mempercepat proses penanganan pascapanen cabai rawit merah (Capcicum frutescens L.) dengan tetap mempertahankan kualitas produk dan memperpanjang waktu penyimpanan produk. Penelitian ini secara umum dilakukan untuk meningkatkan penanganan pascapanen cabai rawit merah, dengan tujuan khusus adalah mempelajari pengaruh perlakuan trimming terhadap kualitas produk cabai kering dan cabai bubuk, mempelajari pengaruh perlakuan pengempaan terhadap kualitas produk cabai kering dan cabai bubuk, serta membandingkan keadaan dan perubahan kualitas dan daya simpan dengan adanya perlakuan trimming dan pengempaan. Penelitian dilakukan di Kampus Polbangtan Bogor, di Laboratorium Pascapanen Hasil Pertanian. Perlakuan pada penelitian yaitu proses trimming dan tanpa trimming, pengempaan dan tanpa pengempaan. Parameter yang diamati adalah kebusukan, warna, aroma, dan rasa yang dilakukan seminggu sekali selama sepuluh minggu. Pengamatan dilakukan melalui pengukuran dan uji organoleptik (scoring), pengolahan data hasil pengamatan dilakukan melalui uji-T. Hasil penelitian menunjukkan bahwa tanpa perlakuan trimming ternyata tidak berpengaruh terhadap kualitas produk cabai rawit merah kering dan bubuk, tambahan perlakuan pengempaan pada tahapan pascapanen dapat mempercepat proses pengeringan tanpa mengurangi kualitas produk, sehingga memberi keuntungan positif pada penanganan pascapanennya, dan daya simpan dan kualitas cabai rawit merah kering lebih baik dan lebih lama dari pada cabai rawit bubuk. Chili is one of main agricultural produces and become one of the focuses in agricultural development due to its important effect on price fluctuation and inflation. Overall, the production technology applied by farmers and agri-preuneurs were successful. Unfortunately, in terms of postharvest handling and processing aspects have not done well. This research was to answer these problems by exploring the appropriate technology to accelerate the postharvest handling process of cayenne pepper (Capsicum frutescens L.) by maintaining product quality and shelf-life. Research objectives were to study the effect of trimming on postharvest handling to the quality of dry chili and chili powder, to study the effect of pressing on the postharvest handling to the quality of dry chili and chili powder, and to study the effect of trimming and pressing on postharvest handling to the quality and durability (shelf life) of dry chili and chili powder. This research was conducted in Postharvest Handling Laboratory of Polbangtan Bogor, with the treatments are; with and without trimming process as well as pressing and without pressing process. Several parameters were observed every week along 10 weeks, such as deterioration, color, smell, and taste. The data were collected through measurement and organoleptic test (scoring) and analyzed using the t-Test. It can be concluded that; without trimming treatment wase not affected to the quality of dry chili and chili powder, by adding pressing treatment on postharvest handling rising some advantages because it could speed up the drying process without reducing the quality of the product, the durability and quality of dried chili was better than powder chili.

OPTIMASI PROSES PENGERINGAN TERHADAP AKTIVITAS ANTIOKSIDAN BUNGA TELANG (Clitoria ternatea) MENGGUNAKAN METODE RESPON PERMUKAAN Rizal Anwar Fauzi; Asri Widyasanti; Sophia Dwiratna Nur Perwitasari; Siti Nurhasanah
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Bunga telang (C. ternatea) diidentifikasi mengandung senyawa bioaktif yang berpotensi menjadi sumber antioksidan alami namun mudah terdegradasi oleh suhu tinggi. Tujuan penelitian ini yaitu mengetahui model matematis dan kombinasi suhu dan waktu pengeringan yang menghasilkan bunga telang kering dengan kadar air, rendemen dan aktivitas antioksidan paling optimum. Pengering yang digunakan yaitu food dehydrator dengan suhu 45 °C hingga 65 °C serta waktu 4 hingga 6 jam. Metode penelitian ini yaitu metode eksperimen dengan optimasi menggunakan Response Surface Methodology tipe CCD pada aplikasi Design Expert 11. Parameter yang dianalisis selain respon pada RSM yaitu kelarutan bubuk dan warna seduhan bunga telang kering. Kondisi pengeringan optimum yang diberikan RSM diperoleh pada pengeringan dengan suhu 64,46 °C selama 5,95 jam. Diperoleh nilai hasil dari validasi aktivitas antioksidan 159,75 ppm (kategori sedang), kadar air 4,33%, kelarutan 63,09%, rendemen 8,44%, L* 41,39, a* -24,18, b* -18,39, kromatisitas warna 30,23, dan Hue 216,88 (Blue green). Persamaan matematis aktivitas antioksidan didapatkan Y = 2630,202 – 62,236 A – 140,078 B – 4,171 AB + 0,707 A2 + 28,864 B2, dengan Y adalah aktivitas antioksidan (ppm), A adalah suhu (°C), dan B adalah waktu (jam). Penelitian ini membuktikan bahwa kombinasi suhu dan waktu pengeringan berpengaruh pada aktivitas antioksidan bunga telang kering. Butterfly pea (C.ternatea) was identified to contain bioactive compounds that have the potential as a source of natural antioxidants but are easily degraded by high temperatures. The purpose of this research was to determine the mathematical model and combination temperature and dry time produces C.ternatea dry with the most optimum moisture content, yield and antioxidant activity. The dryer used was a food dehydrator with a temperature of 45 °C to 65 °C and a time of 4 to 6 hours. This research method was experimental research with optimization using Response Surface Methodology type CCD on Design Expert 11. Parameters analyzed in addition to the response in RSM were powder solubility and steeping color of dried C.ternatea. The most optimum dry conditions were given RSM obtained at a temperature of 64,46 °C for 5,95 hours. The results obtained from the validation of antioxidant activity 159.75 ppm (medium category), water content 4.33%, solubility 63,09%, yield 8,44%, L* 41,39, a* -24,18, b* -18,39, chroma 30,23, and Hue 216,88 (Blue-green). The mathematical equations for antioxidant activity was Y = 2630,202 – 62,236 A – 140,078 B – 4,171 AB + 0,707 A2 + 28,864 B2, Y: antioxidant activity (ppm), A: temperature (°C), and B: time (hours). This study proved that the combination of temperature and time affects the antioxidant activity of dried C.ternatea.

PENGARUH SUHU DAN LAMA PEMBEKUAN TERHADAP KUALITAS NASI SORGUM INSTAN Hesti Ramdayani; Erni Sofia Murtini
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Biji sorgum berpotensi untuk menggantikan beras sebagai makanan pokok karena kemiripan kandungan nutrisinya. Namun, diperlukan waktu yang cukup lama untuk memasak biji sorgum. Nasi sorgum instan dikembangkan untuk mempercepat penyajian dan juga untuk memperpanjang umur simpan. Suhu dan waktu pembekuan merupakan tahapan penting dalam proses instanisasi nasi sorgum. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu dan lama pembekuan terhadap karakteristik nasi sorgum instan. Penelitian ini menggunakan Rancangan Acak kelompok faktorial. Faktor pertama menggunakan suhu pembekuan -4, -12, dan -20 °C dan faktor kedua lama pembekuan yaitu 12, 18, dan 24 jam. Suhu dan lama pembekuan berpengaruh nyata terhadap karakteristik kimia dan fisik nasi sorgum instan yaitu diperoleh. Perlakuan terbaik didapatkan pada produk dengan suhu pembekuan -20 °C dan lama pembekuan 24 jam. Karakteristik produk nasi sorgum instan terbaik yaitu kadar air 61,62%, kadar abu 0,18%, kadar protein 5,40%, kadar lemak 2,27%, kadar karbohidrat 30,53%, waktu rehidrasi 4,18 menit, daya serap air 157,28%, rendemen 95,33%, hardness 77,2 g, densitas kamba 0,48 g/ml, nilai kecerahan (L*) 43,13, kemerahan (a*) 2,33, dan kekuningan (b*) 8,43 Sorghum grain has the potential to substitute rice as a staple food due to the similarity of their nutritional composition. However, the cooking time of sorghum grain is quite long. Instant sorghum is developed to shorten cooking time and to extend shelf life. The freezing temperature and duration are critical stages in the manufacture of instant sorghum. The study aimed to observe the effect of freezing temperature and duration on the characteristics of instant sorghum. The study followed the Randomized block design (RBD), two factors: freezing temperatures (-4, -12, and -20 °C) and freezing durations (12, 18, and 24 h). Freezing temperature and time significantly affected the chemical and physical characteristics of instant sorghum. The freezing temperature of -20 °C and freezing duration of 24 h made up the best treatment. The best instant sorghum contained moisture 61.62%, ash 0.18%, protein 5.40%, fat 2.27%, carbohydrate 30.53%. It had rehydration time 4.18 min, water absorption 157.28%, yield 95.33%, hardness 77.2 g, bulk density 0.48 g/ml, brightness value (L*) 43.13, redness (a*) 2.33, and yellowness (b*) 8.43

ISOLASI DAN IDENTIFIKASI BAKTERI ASAM LAKTAT PADA FERMENTASI SPONTAN BIJI KOPI ROBUSTA ASAL BANTAENG Izmi Azhara; Muhammad Rais; Andi Sukainah; Reski Praja Putra
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Penelitian ini adalah penelitian eksperimen yang bertujuan mengisolasi bakteri asam laktat (BAL) indigenus yang terlibat dalam fermentasi spontan biji kopi robusta asal Bantaeng pada interval waktu fermentasi 0, 3, 6, 9, 24, 48, dan 72 jam serta untuk mengetahui aktivitas enzim dari isolat bakteri asam laktat indigenus sebagai upaya pengembangan kultur starter dalam fermentasi biji kopi secara terkontrol. Hasil penelitian menunjukkan isolasi berhasil dilakukan pada 37 isolat bakteri yang terlibat dalam fermentasi spontan biji kopi robusta. Hasil identifikasi sederhana yang dilakukan secara bertahap menunjukkan hanya 12 isolat bakteri yang bersifat katalase negatif, Gram positif, non spora, non motil, tidak menghasilkan gas (homofermentatif), tumbuh pada suhu 10 °C, 37 °C, 45 °C serta mampu tumbuh pada konsentrasi garam 4% dan 6,5%. Selanjutnya, 2 isolat BAL yang diisolasi pada waktu fermentasi 24 jam diuji lebih lanjut untuk dikembangkan sebagai kultur starter fermentasi biji kopi secara terkontrol. Kedua isolat BAL terpilih, yaitu BT24I1 dan BT24I2, diuji kemampuannya dalam menguraikan selulosa dan pektin. Hasil pengujian kualitatif menunjukkan kedua isolat BAL mampu menghasilkan selulase dan pektinase sehingga keduanya berpotensi dikembangkan sebagai kandidat kultur starter dalam fermentasi terkontrol biji kopi robusta dalam upaya pengembangan mutu dan cita rasa kopi This study is an experimental study aimed at isolating lactic acid bacteria (BAL) indigenus involved in the spontaneous fermentation of robusta coffee beans from Bantaeng at fermentation time intervals of 0, 3, 6, 9, 24, 48, 72 hours and to find out the enzyme activity of the isolate of indigenus lactic acid bacteria as an effort to develop a starter culture in controlled coffee bean fermentation. The results showed that isolation was successfully carried out on 37 bacterial isolates involved in spontaneous fermentation of robusta coffee beans. The results of a simple identification carried out gradually showed only 12 bacterial isolates that were catalase negative, Gram positive, non spore, non-motile, non-gas-producing (homofermentative), growing at temperatures of 10 °C, 37 °C, 45 °C and able to grow at salt concentrations of 4% and 6.5%. Furthermore, 2 BAL isolates isolated at the fermentation time of 24 hours were further tested to be developed as a controlled coffee bean fermentation starter culture. The two selected BAL isolates, BT24I1 and BT24I2, tested their ability to decompose cellulose and pectin. Qualitative test results show that both BAL isolates can produce cellulase and pectinase so that both have the potential to be developed as candidates for starter cultures in controlled fermentation of robusta coffee beans in an effort to develop the quality and taste of coffee.

SIFAT FISIKO-KIMIAWI DAN FUNGSIONAL TEPUNG UWI (Dioscorea spp.) YANG DI MODIFIKASI MENGGUNAKAN CAIRAN SAUERKRAUT Ulyarti Ulyarti; Surhaini Surhaini; Yuli Sri Wahyuni; Nazarudin Nazarudin
Jurnal Teknologi Pertanian Vol. 23 No. 1 (2022)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Penelitian ini bertujuan untuk mengetahui pengaruh lama fermentasi menggunakan cairan kubis fermentasi (sauerkraut) terhadap sifat fisikokimia dan fungsional tepung uwi kuning (Dioscorea spp.). Cairan sauerkraut hari ke-3 (72 jam fermentasi) sebagai sumber Bakteri Asam Laktat (BAL) digunakan dalam proses fermentasi. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan 6 taraf perlakuan, yaitu tanpa fermentasi (kontrol), 12, 24, 36, 48, dan 60 jam fermentasi. Penelitian dilakukan dalam dua tahap yaitu pembuatan cairan sauerkraut dan pembuatan tepung fermentasi. Cairan sauerkraut mengalami peningkatan total mikroba dan penurunan nilai pH seiring dengan lamanya fermentasi. Pada cairan fermentasi uwi terjadi peningkatan total mikroba dan penurunan pH selama 48 jam fermentasi. Fermentasi lebih dari 48 jam mengakibatkan jumlah mikroba menurun kembali. Hasil penelitian menunjukkan bahwa lama fermentasi memiliki pengaruh (p ≤ 0,05) terhadap nilai kromatik warna b* 25,95 (48 jam), solubility pada titik suhu 65 °C dan 75 °C, kapasitas penyerapan air 2,28 g/g (60 jam), dan aktivitas antioksidan 67,68% (60 jam), namun tidak berpengaruh (p ≥ 0,05) pada kadar air, kadar serat, nilai kromatik warna L* dan a*, °hue, swelling power, solubility dibeberapa titik suhu (70, 80, 85, 90, 95 °C), kapasitas penyerapan minyak, dan aktivitas emulsi. This study aimed to determine the effect of fermentation time using fermented cabbage juice (sauerkraut) on physicochemical and functional properties of yellow yam (Dioscorea spp.) flour. The 3rd day sauerkraut juice (72 hours fermentation) was used as the source of LAB starter in fermentation. This study used a Randomized Block Design (RBD) with six treatments, i.e : without fermentation (control), 12, 24, 36, 48, and 60 hours fermentation. The study was carried out in two steps: sauerkraut processing and the fermented yam flour processing. The sauerkraut juice showed an increase in total microbe and a decrease in pH during fermentation. The total microbe and the pH of the fermentation solution increased during first 48 hours fermentation. Fermentation longer than 48 hours caused the total microbe to decrease. The result showed that the length of fermentation affected (p ≤ 0.05) the chromatic color value b* 25,95 (48 hours), solubility at 65 °C and 75 °C, water absorption capacity 2,28 g/g (60 hours), and antioxidant activity 67,68% (60 hours), but did not affect (p ≥ 0.05) water content, crude fibre content, chromatic color value L* and a*, °hue, swelling power, solubility at the several temperature (70, 80, 85, 90, 95 °C), oil absorption capacity, and emulsion activity.

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