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VISCOSITY AND PARTICLE SIZE DISTRIBUTION OF CONCENTRATED APPLE JUICE PRODUCED BY SPINNING DISC REACTOR (SDR) Novi Safriani
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 4, No 2 (2012): Vol.(4) No.2, June 2012
Publisher : Agricultural Faculty

This research explored the potential use of the spinning disc reactor (SDR), a novel processing technique used for the production of concentrated apple juice. The apple juice was passed over the SDR disc spinning at 2000 rpm, heated at various temperatures (90 °C, 100 °C, 110 °C, and 120 °C), and at a flow rate of 7 ml/s. The effect of SDR-processing on viscosity and particle size of the apple juice concentration, was investigated. The SDR-concentrated apple juice exhibits narrow particle size distribution (average particle size in the range of d32 = 0.1-0.2 µm and d43 = 4-12 µm) and shear-thinning behaviour in the range of shear rates from 0.1 – 200 s-1, in which the viscosity decreases with increasing the shear rate. The reconstituted samples show similar viscosity with its original counterpart. The increase of the processing temperature allows a reduction in the processing time. The results reveal that the SDR is capable of producing the concentrated apple juice.

Pemanfaatan Pasta Sukun (Artocarpus altilis) pada Pembuatan Mi Kering Novi Safriani; Ryan Moulana; Ferizal Ferizal
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 5, No 2 (2013): Vol.(5) No.2, June 2013
Publisher : Agricultural Faculty

The aim of this study was to determine the best treatment combination between the ratio of wheat flour and breadfruit pasta, and the combination of the drying temperature and time to produce dried noodles with good quality and preferred by consumers. The effect of the ratio of wheat flour and breadfruit pasta (70:30%, 60:40%, and 50:50%), and the combination of the drying temperature and time (60°C, 70 minutes and 70°C, 60 minutes) on the quality of the dried noodles were investigated. The results showed that the best quality of the dried noodles based on the organoleptic and cooking quality test obtained from the combination of the treatment of ratio of wheat flour and breadfruit pasta = 70:30% and the combination of drying temperature and time = 700C for 60 minutes with the following characteristics: water content of 8,78%, fat content of 13,67%, protein content of 11.90%, ash content of 1,35%, and carbohydrate content of 65,22%. The organoleptic value of the best dried noodles before rehydration: color of 2,75; flavor of 2,83; texture of 2,73; whereas after the rehydration, the best dried noodles has organoleptic values: color of 2,81; flavor of 2,92; and taste of 2,77.

Evaluasi Potensi Antioksidan Oleoresin Daun Kari dalam Emulsi Minyak Nabati setelah Pemanasan Darmawati Darmawati; Novi Safriani; Novia Mehra Erfiza
Jurnal Ilmiah Mahasiswa Pertanian Vol 1, No 1 (2016): November 2016
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Abstrak. Oleoresin daun kari mengandung senyawa polifenol yang berpotensi sebagai antioksidan. Tujuan penelitian ini untuk mengetahui pengaruh suhu dan lamanya pemanasan terhadap kandungan total fenol oleoresin daun kari di dalam emulsi minyak jagung dan stabilitas minyak jagung terhadap pemanasan yang dilihat dari spektra FTIR. Rancangan penelitian yang digunakan pada penelitian adalah Rancangan Acak Lengkap (RAL) faktorial, terdiri dari dua faktor, yaitu suhu pemanasan (T) dan lama pemanasan (W). Suhu pemanasan (T) terdiri dari 3 taraf, yaitu: T1=120oC, T2=150oC, T3=180oC. Lama pemanasan (W) terdiri dari 4 taraf yaitu: W1=15 menit, W2=30 menit, W3=45 menit dan W4=60 menit. Perlakuan diulang 3 kali. Parameter yang dianalisis yaitu kandungan total fenol dan identifikasi gugus fungsi dengan metode FTIR. Hasil penelitian menunjukkan bahwa suhu pemanasan dan lama pemanasan berpengaruh sangat nyata (P ≤ 0,01) terhadap kandungan total fenol oleoresin daun kari dalam emulsi minyak jagung. Semakin tinggi suhu pemanasan, kandungan total fenol semakin menurun yaitu dari 120oC ke 180oC, nilai total fenol menurun dari 0,157 menjadi 0,124 mg GAE/ml sampel. Semakin lama pemanasan, kandungan total fenol semakin menurun yaitu dari 15 menit ke 60 menit, nilai total fenol menurun dari 0,171 menjadi 0,112 mgGAE/ml sampel. Penambahan oleoresin daun kari dalam emulsi minyak jagung dapat mempengaruhi laju oksidasi asam lemak tidak jenuh, terlihat dari puncak pada panjang gelombang 3007 cm-1 yang mempunyai intensitas berbeda. Abstract. Curry leaves oleoresin contains polyphenol compounds as an antioxidant. The purpose of this study was to determine the effect of heating temperature and time on the total phenolic content of curry leaves oleoresin in the corn oil emulsion and the stability of corn oil after heating that could be seen from FTIR spectra. The research was conducted using a Completely Randomized Design (CRD) consisted of two factors. The first factor was heating temperature (T1=120oC, T2=150oC, T3=180oC). The second factor was heating time (W1=15 minutes, W2=30 minutes, W3=45 minutes and W4=60 minutes). The treatment was repeated 3 times. The analyzed parameters were total phenol content and identification of organic compounds with the FTIR. The results showed that the heating temperature and time had significant effects (P ≤ 0.01) on the total phenolic content of curry leaves oleoresin in corn oil emulsion. As the heating temperature increased, the total phenol content decreased. From 120oC to 180oC, the total phenols decreased from 0.157 to 0.124 mgGAE / ml sample. As heating time increased, the total phenol content decreased. From 15 minutes to 60 minutes, the total phenol decreased from 0.171 to 0.112 mgGAE/ml sample. The addition of curry leaves oleoresin in corn oil emulsion affected the rate of unsaturated fatty acids oxidation. It can be seen from the peak at a wavelength of 3007 cm-1 which had a different intensity.

Ekstraksi Antosianin dari Buah Senggani (Melastoma polyanthum BI.) dengan Variasi Rasio Bahan dengan Pelarut dan Konsentrasi Asam Sitrat Trysia Zulfina; Novi Safriani; Nida El Husna
Jurnal Ilmiah Mahasiswa Pertanian Vol 3, No 4 (2018): November 2018
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Abstrak. Senggani (Melastoma polyanthum BI.) adalah tanaman hias yang tumbuh pada lahan semak dan memiliki buah dengan ukuran kecil yang berwarna ungu atau merah muda. Warna ungu pekat pada buah senggani berasal dari kandungan senyawa antosianin yang berpotensi untuk dijadikan sebagai sumber zat warna alami. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan rasio bahan dengan pelarut dan konsentasi asam sitrat terhadap intensitas warna dari ekstrak buah senggani. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) pola faktorial yang terdiri atas 2 (dua) faktor. Faktor pertama adalah rasio bahan dengan pelarut (P) yang terdiri dari 4 taraf yaitu: P1=1:5, P2=1:10, P3=1:15, P4=1:20. Faktor kedua adalah konsentrasi asam sitrat (A) yang terdiri dari 2 taraf yaitu: A1=0,4%, A2=20%. Setiap perlakuan diulang sebanyak 3 kali sehingga diperoleh 24 satuan percobaan. Hasil sidik ragam menunjukkan bahwa Rasio bahan : pelarut berpengaruh sangat nyata (P≤0,01) terhadap aktivitas antioksidan, derajat keasaman (pH), intensitas warna ekstrak buah senggani. Konsentrasi asam sitrat berpengaruh sangat nyata (P≤0,01) terhadap total antosianin, aktivitas antioksidan, intensitas warna. Berdasarkan hasil analisis intensitas warna ekstrak buah senggani, perlakuan terbaik diperoleh pada kombinasi perlakuan antara rasio bahan : pelarut 1:5 dan konsentrasi asam sitrat 20% (P1A2) dengan karakteristik ekstrak memiliki intensitas warna 0,57. Abstract. Senggani (Melastoma Polyanthum BI.) is an ornamental plant that grows on a bushland and has a fruit with a small size that is purple or pink. The colour of the fruit comes from anthocyanin compound that is potential to be used as a source of natural dyes. This study aimed to determine the effect of the ratio between material and solvent and the concentration of citric acid on the color intensity of the senggani fruit extract. Randomized Block Design (RAK) of factorial pattern consisting of 2 (two) factors was used. The first factor was the ratio between material and the solvent (P) consisted of 4 levels: P1 = 1: 5, P2 = 1: 10, P3 = 1: 15, P4 = 1: 20. The second factor was the concentration of citric acid (A) consisted of 2 levels: A1 = 0.4%, A2 = 20%. Each treatment was repeated 3 times to obtain 24 units of experiment. The results showed that the ratio between material and solvent has an effect (P≤0.01) on the antioxidant activity, the degree of acidity (pH), the intensity of the extract color of the fruit of senggani. Citric acid concentration was highly significant (P≤0.01) to total anthocyanin, antioxidant activity, and colour intensity. Based on the analysis of the intensity of the extract color of the senggani fruit, the best treatment was obtained from the combination between the ratio of the ingredient: solvent 1: 5 solvent and 20% citric acid concentration (P1A2) where the extract has the color intensity of 0.57.Keywords: Senggani, Melastoma polyanthum BI., colour intensity, citric acid.

Nilai pH dan Intensitas Warna Antosianin Buah Jamblang (Syzygium cumini) yang Diekstrak dengan Metode Ultrasonik Muhammad Mesa Tamamy; Nida El Husna; Novi Safriani
Jurnal Ilmiah Mahasiswa Pertanian Vol 3, No 4 (2018): November 2018
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh suhu serta waktu ekstraksi terhadap total antosianin ekstrak buah jamblang menggunakan metode ultrasonik. Penelitian menggunakan Rancangan Acak Kelompok (RAK) Faktorial yang terdiri dari 2 faktor. Faktor pertama yaitu Suhu ekstraksi (T) yang terdiri dari 3 taraf yaitu, T1= Suhu ruang (300C) T2= Suhu 400C dan T3= Suhu 500C. Faktor kedua yaitu Waktu Ekstraksi (W) yang terdiri dari 3 taraf yaitu W1= 30 menit, W2= 45 menit dan W3= 60 menit. Hasil penelitian menunjukkan suhu ekstraksi (T) dan waktu ekstraksi (W) tidak berpengaruh (P0,05) terhadap pH ekstrak antosanin. Sedangkan interaksi antara suhu dan waktu (TW) berpengaruh nyata (P≤0,05) terhadap pH ekstrak antosianin buah jamblang. Suhu ekstraksi (T), waktu ekstraksi (W) maupun interaksi antara suhu dan waktu ekstraksi (TW) tidak berpengaruh nyata (P0,05) terhadap intensitas warna ekstrak antosianin buah jamblang. Abstract. This study aims to determine the effect of temperature and time of extraction on total anthocyanin extract of jamblang fruit using ultrasonic method. The research used Randomized Block Design (RAK) Factorial consisting of 2 factors. The first factor is the temperature of extraction (T) consisting of 3 levels ie, T1 = Room temperature (300C) T2 = Temperature 400C and T3 = Temperature 500C. The second factor is the Extraction Time (W) consisting of 3 levels ie W1 = 30 minutes, W2 = 45 minutes and W3 = 60 minutes. The results showed that the extraction temperature (T) and the extraction time (W) had no significant effect (P 0.05) on the pH of antosanin extraction. While the interaction between temperature and time (TW) significantly (P ≤ 0.05) to the pH of anthocyanin extract of jamblang fruit. The extraction temperature (T), the extraction time (W) and the interaction between temperature and extraction time (TW) have no significant effect (P 0.05) on the intensity of anthocyanin extract color of the jamblang fruit.

Kajian Pembuatan Bubuk Serai Dapur (Cymbopogon citratus) dengan Kombinasi Suhu dan Lama Pengeringan Syifaush Shadri; Ryan Moulana; Novi Safriani
Jurnal Ilmiah Mahasiswa Pertanian Vol 3, No 1 (2018): Februari 2018
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Abstrak. Tanaman serai merupakan tanaman herbal yang sering dijumpai sekitar perkarangan rumah atau kebun-kebun di Aceh. Tujuan penelitian adalah untuk mengetahui pengaruh suhu dan lama pengeringan terhadap mutu bubuk serai dapur yang dihasilkan. Hasil penelitian ini juga diharapkan dapat menjadi acuan dalam pengolahan serai dapur menjadi bumbu dan meningkatkan nilai ekonomis dari serai dapur (Cymbopogon citratus) serta dapat mempermudah pemanfaatan serai ke dalam masakan. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor yaitu suhu pengeringan (S) dan lama pengeringan (W). Faktor 1 yaitu suhu pengeringan (S) terdiri atas 3 taraf meliputi S1= 40°C, S2= 50°C, dan S3= 60°C. Faktor kedua yaitu lama pengeringan (W) terdiri atas 2 taraf yaitu W1=24 jam, dan W2=48 jam. Produk yang dihasilkan selanjutnya dianalisis kadar air, kadar abu, total flavonoid, aktivitas antioksidan, dan organoleptik (hedonik) untuk warna dan aroma. Hasil penelitian menunjukkan bahwa perlakuan terbaik yang ditentukan berdasarkan uji organoleptik hedonik adalah kombinasi perlakuan lama pengeringan 48 jam dan suhu pengeringan 60°C (W2S3) dengan kadar total flavonoid 7,03% dan aktivitas antioksidan 46,67 %. Abstact. Lemongrass is one of herbs that are often found around home garden or plantation field in Aceh. The purpose of this research was to find out the influence of temperature and drying time to the quality of the generated lemongrass powder. The results of this study are also expected to be a reference in the processing of lemon grass into spices and increase the economic value of lemongrass kitchen (Cymbopogon citratus) and can facilitate lemongrass into the dish. This research was done by using factorial Randomized Block Design (RAK) with 2 factors ie drying temperature (S) and drying time (W). The first Factor was drying temperature (S) consisted of 3 levels of S1 = 40°C, S2 = 50°C, and S3 = 60°C. The second factor was the drying time (W) consisted of 2 levels of W1 = 24 hours, and W2 = 48 hours. The resulting product was then analyzed for water content, ash content, total flavonoid, antioxidant activity, and organoleptic (hedonic) for color and aroma. The results showed that the best treatment was W2S3 treatment (combination between 60oC and 48 hours drying) with a total flavonoid level of 7.03% and an antioxidant activity of 46.67%. This was determined based on organoleptic (hedonic) test.

Formulasi Penambahan Tepung Suruhan (Peperomia pellucida L. Kunth) Terhadap Total Fenol Dan Daya Terima Mutiara Tapioka Reza Hutagalung; Syarifah Rohaya; Yanti Lubis; Novi Safriani
Jurnal Ilmiah Mahasiswa Pertanian Vol 8, No 2 (2023): Mei 2023
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Abstrak : Suruhan (Peperomia Pellucida L. Kunth) merupakan jenis gulma yang tumbuh di area lembab dan teduh. Biasanya digunakan untuk mengatasi kejang, kelelahan, demam, sakit kepala, nyeri rematik, hingga menurunkan kadar kolesterol darah. Penelitian ini bertujuan mempelajari pembuatan mutiara tapioka dengan penambahan daun suruhan. Perbedaan formulasi bahan dan perbedaan waktu pengovenan daun suruhan menjadi variabel yang dilakukan dalam penelitian ini. Peranan formulasi bahan dan perbedaan waktu pengovenan menghasilkan mutiara tapioka yang kemudian selanjutnya dilakukan uji hedonik yang meliputi tekstur, rasa, warna, aroma, dan Total fenol. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktorial yang terdiri dari dua faktor yaitu waktu pengeringan dan formulasi perbandingan tepung. Faktor pertama terdiri dari dua taraf yaitu pengeringan selama 3 jam dan selama 5 jam . Faktor kedua terdiri dari 3 taraf formulasi perbandingan tepung suruhan dengan tepung tapioka, yaitu S1 (10 : 80) gram, S2 (15 : 75) gram, dan S3 (20 : 70) gram. Setiap perlakuan dilakukan pengulangan sebanyak 4 kali. Hasil penelitian menunjukan bahwa pembuatan mutiara tapioka dengan penambahan daun suruhan berpengaruh nyata terhadap nilai tekstur pada uji organoleptik. Perlakuan formulasi (S) dan waktu (P) tidak berpengaruh nyata (P0,05) terhadap warna, aroma, dan rasa pada mutiara tapioka. Sedangkan Perlakuan formulasi (S) berpengaruh nyata (P0,05) terhadap tekstur pada mutiara tapioka. Hasil terbaik didapatkan pada pengovenan selama 3 jam dengan formulasi komposisi S1 memperoleh nilai total fenol sebanyak 7,81 mg/ml, dan tingkat kesukaan terhadap tekstur mutiara tapioka 2,68 (netral). Hasil total fenol tertinggi didapati pada waktu 5 jam dan formulasi S3 (8,90 mg/ml). Formulation Of Additional Flour (Peperomia pellucida L. Kunth) To Total Phenols And Acceptance Of Tapioka PearlsAbstrac : Suruhan (Peperomia Pellucida L. Kunth) is a type of weed that grows in damp and shady areas. Usually used to treat seizures, fatigue, fever, headaches, rheumatic pain, to lower blood cholesterol levels. This research aims to study the manufacture of tapioca pearls with the addition of suruhan leaves. The difference in the formulation of the ingredients and the difference in the baking time of the suruhan leaves became the variables used in this study. The role of ingredient formulation and the difference in baking time produced tapioca pearls which were then subjected to hedonic tests which included texture, taste, color, aroma, and total phenol. This study used a factorial Completely Randomized Design (CRD) which consisted of two factors, namely drying time and flour ratio formulation. The first factor consisted of two levels, namely drying for 3 hours and for 5 hours. The second factor consisted of 3 formulation levels of the ratio of tapioca flour to tapioca flour, namely S1 (10 : 80) gram, S2 (15 : 75) gram, and S3 (20 : 70) gram. Each treatment was repeated 4 times. The results showed that the manufacture of tapioca pearls with the addition of suruhan leaves had a significant effect on the texture value in the organoleptic test. Formulation (S) and time (P) treatment had no significant effect (P0.05) on the color, aroma and taste of tapioca pearls. While the formulation treatment (S) had a significant effect (P0.05) on the texture of the tapioca pearls. The best results were obtained in the oven for 3 hours with the composition formulation S1 obtaining a total phenol value of 7.81 mg/ml, and a preference level for the texture of tapioca pearls of 2.68 (neutral). The highest total phenol yield was found at 5 hours and formulation S3 (8.90 mg/ml).

Pengemasan Manisan Kolang-Kaling Basah (Arenga pinnata L.) dengan Bahan Kemas Plastik dan Botol Kaca pada Penyimpanan Suhu Ruang Novi Safriani; Melly Novita; Ismail Sulaiman; Wenny Ratino
Rona Teknik Pertanian Vol 7, No 1 (2014): Volume 7, No. 1, April 2014
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v7i1.2644

Abstrak. Penelitian ini bertujuan untuk menentukan jenis kemasan terbaik yang dapat mempertahankan mutu manisan kolang-kaling (Arenga pinnata L.) basah selama penyimpanan pada suhu ruang. Pada penelitian ini telah dikaji pengaruh jenis kemasan (plastik polipropilen (PP), botol plastik polipropilen (PP), dan botol kaca) dan lama penyimpanan (0, 5, 10, dan 15 hari) terhadap mutu manisan kolang-kaling basah. Hasil penelitian menunjukkan bahwa manisan kolang-kaling basah dengan mutu terbaik berdasarkan uji organoleptik dan kimia diperoleh dari kombinasi perlakuan manisan kolang-kaling basah yang dikemas menggunakan botol kaca dan lama penyimpanan 5 hari pada suhu ruang dengan karakteristik sebagai berikut: kadar air 35,75%, kadar gula 50,56 mg/L, kadar total asam 0,16%, nilai pH 4,40, total mikroba 0,34 CFU/ml, nilai organoleptik warna 3,83; aroma 3,90; dan tekstur 3,87. Wet ‘Kolang-Kaling’ Sweets (Arenga pinnata L.) Packaging Using Plastic Material and Glass Jar in Room Temperature Storage Abstract. The aim of this study was to determine the best type of packaging to maintain the quality of wet “kolang-kaling”(Arenga pinnata L.) sweets during storage at the room temperature. The effects of the type of packaging (polypropylene plastic (PP), polypropylene plastic cup (PP),and glass jar (jam jar)), and storage duration (0, 5, 10, and 15 days) on the quality of the wet “kolang-kaling” sweets were investigated.The results showed that the best quality of the wet “kolang-kaling” sweets based on the organoleptic and chemical analysis obtained from the wet “kolang-kaling” sweets were packed by using glass jars, and storage of 5 days at room temperature with the following characteristics: water content of 35,75%, sugar content of 50,56 mg/L, total acid content of 0,16%, pH value of 4,40, the total microbial of 0,34 CFU/ml. The organoleptic value of the best treatment: color of 3,83; flavor of 3,90; texture of 3,87.

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