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Jurnal Aplikasi Teknologi Pangan
Published by Universitas Diponegoro
ISSN : 20897693     EISSN : 24605921     DOI : -
Core Subject :
Jurnal Aplikasi Teknologi Pangan aims to expose the results of fundamental and applied research in food and its related fields to scholars, students, and food applicants. The journal covers the fields of application of technology on food, i.e. biotechnology, functional food, food process, health, food related field on agribusiness and agro-technology.
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Articles 109 Documents
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Potensi Usaha Mie Bayam sebagai Diversifikasi Produk Mie Sehat Siswanto Imam Santoso; Siti Susanti; Heni Risqiati; Agus Setiadi; Suryani Nurfadillah
Jurnal Aplikasi Teknologi Pangan Vol 7, No 3 (2018): Agustus 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.08 KB) | DOI: 10.17728/jatp.2690

Abstract

Beberapa penelitian terdahulu berhasil membuktikan bahwa produk mi instan yang diperkaya bayam menunjukkan tingkat penerimaan panelis yang cukup baik. Namun demikian, munculnya tambahan biaya akibat fortifikasi bayam yang secara langsung dapat mengakibatkan peningkatan harga produk, belum dikaji secara jelas. Penelitian ini bertujuan untuk mengetahui tingkat kelayakan usaha dari mi bayam. Penelitian diawali dengan pembuatan mi bayam (mi dengan fortifikasi ekstrak bayam). Selanjutnya semua komponen biaya terkait operasional produksi mi bayam dicatat sebagai informasi dalam melakukan analisis Break Event Point (BEP) dan Benefit per Cost Ratio (B/C ratio). Hasil perhitungan menunjukkan bahwa harga pokok BEP produk sebesar 3 kemasan dengan rasio B/C sebesar 1,9. Dapat disimpulkan kegiatan usaha produksi mi bayam layak secara ekonomis untuk dijalankan ditinjau dari BEP dan B/C ratio. Kajian ini diharapkan dapat memberi informasi bahwa mi bayam berpotensi sebagai bisnis baru di bidang pangan fungsional khususnya diversifikasi produk olahan mi yang menyehatkan (mi fungsional).Business Potency of Spinach Noodle as a Product Diversification of Healthy NoodleAbstractPrevious study successfully proved that spinach fortified instant noodle showed a fairly good panelist preference. However, the emergence of additional costs due to spinach fortification which can directly lead to an increase in product prices has not been clearly assessed. This study was aimed to get more insight the level of business feasibility on the spinach noodle. Study was initiated by spinach noodle production (spinach extract fortified noodle). Furthermore, all of production cost was documented as data source for analyzing Break Event Point (BEP) and Benefit per Cost (B/C) ratio. The result showed that the cost of BEP product was 3 pack with B/C ratio equal to 1.9. It can be concluded that business activity of the spinach noodle was feasible economically to carry out. This study was expected to provide information about potency of spinach noodle as a new business in functional food field especially diversification of healthy noodle processed products (functional noodle).•••••
Respon Glikemik dan Aktivitas Antioksidan Nasi Yang Dimasak Menggunakan Campuran Kunyit (Curcuma longa Linn.) dan kayu Manis (Cinnammum sp) Samsu Udayana Nurdin; Yofita Sulfiana Sundari; Novita Herdiana; Fibra Nurainy; Asep Sukohar
Jurnal Aplikasi Teknologi Pangan Vol 7, No 3 (2018): Agustus 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (511.25 KB) | DOI: 10.17728/jatp.2681

Abstract

Penurunan daya cerna pati nasi merupakan cara yang menjanjikan untuk menurunkan efek hiperglikemia nasi. Beberapa penelitian menunjukkan bahwa kunyit (Curcuma longa Linn)  dan kayu manis (Cinnamomum sp) dapat menurunkan daya cerna pati karena kandungan senyawa penoliknya. Penelitian ini bertujuan untuk mempelajari apakah kunyit, kayu manis atau kombinasinya memiliki kemampuan untuk menurunkan daya cerna pati atau meningkatkan aktivitas antioksidan nasi putih. Kombinasi 3 dan 0 g (C1), 2 dan 1 g (C2), 1 dan 2 g (C3), atau 0 dan 3 g masing-masing untuk kunyit dan kayu manis digunakan untuk memasak nasi putih. Hasil penelitian menunjukkan bahwa penggunaan kunyit dan kayu manis untuk memasak nasi tidak mempengaruhi daya cerna pati, aktivitas antioksidan, dan kadar total penolik nasi tetapi mempengaruhi penerimaan konsumen terhadap nasi. Formula terbaik adalah kombinasi antara 2 g kunyit dan 1 g kayu manis (C2) dimana nasi yang dimasak dengan tambahan campuran ini memiliki karakteristik sebagai berikut: tingkat hidrolisis pati 3,99 kali, aktivitas antioksidan 42.,03%, kadar total penol 117.,18 ppm (GAE), dan oleh konsumen dianggap layak sebagai makanan pokok. Kesimpulannya adalah nasi yang dimasak dengan formula C2 memiliki respon glikemik yang tidak berbeda dengan nasi biasa.Glycemic Response and Antioxidant Activity of Raice Cooked with Combination of Turmeric (Curcuma longa Linn.) and Cinnamon (Cinnamomum sp). AbstractReducing of starch digestibility of the rice is one of promising strategies to reduce hyperglycemic effect of the rice. Some research indicate turmeric (Curcuma longa Linn) and cinnamon (Cinnamomum sp) reduced starch digestibility due to their phenolic content. This research was aimed to study whether turmeric, cinnamon and their combination have potentiality to reduce starch digestibility or increase antioxidant activity of white rice. Combination of 3 and 0 g (C1), 2 and 1 g (C2), 1 and 2 g (C3), 0 and 3 g turmeric and cinnamon were used for cooking white rice. The results showed that the addition of turmeric and cinnamon for cooking of rice had no effect on the level of starch hydrolysis, antioxidant activity and phenolic content of rice but significantly affected the consumer acceptance of the rice. The best formula was combination of 2 g of turmeric and 1 g of cinnamon (C2) where the rice cooked by adding this formula had characteristics as follows= starch hydrolysis level was 3,.989 fold, antioxidant activity was 42.03%, total phenol was 117.18 ppm (GAE). Consumers considered that the rice was suitable for staple food. However, no. difference on the glycemic respons was found. As conclusion, addition of turmeric, cinnamon or their combination for cooking of rice was unable to decrease starch digestibility and increase antioxidant activity of the rice.••••
Aktivitas Antioksidan, BAL, Viskositas dan Nilai L*a*b* dalam Yogurt Drink Sinbiotik antara Bifidobacterium Longum dengan Buah Naga Merah (Hylocereus polyrhizus) Suliasih Suliasih; Anang Mohamad Legowo; Baginda Iskandar Moeda Tampoebolon
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.331 KB) | DOI: 10.17728/jatp.3061

Abstract

Penelitian ini bertujuan untuk mengkaji interaksi kombinasi perlakuan antara rasio starter dan  konsentrasi ekstrak buah naga merah (Hylocereus polyrhizus) pada yogurt drink terhadap aktivitas antioksidan, BAL, viskositas dan nilai L*a*b*. Penelitian dengan menggunakan desain eksperimen rancangan acak lengkap pola faktorial dengan dua faktor dan tiga kali pengulangan. Faktor pertama adalah rasio starter, mempunyai tiga taraf yaitu S1,1 (L. bulgaricus + S. termophilus): 1 B. longum; S2,1 (L. bulgaricus + S. termophilus): 2 B. longum; dan S3, 2 (L. bulgaricus + S. termophilus): 1 B. longum dan faktor kedua konsentrasi ekstrak buah naga merah mempunyai empat taraf dengan T0 tanpa buah naga merah, T1 ekstrak buah naga merah 5%; T2 ekstrak buah naga merah 10%; T3 ekstrak buah naga merah 15%. Variabel yang diuji aktivitas antioksidan, BAL, viskositas dan warna . Variabel dianalisis dengan ANOVA pada taraf 5% dan  dilanjutkan dengan uji Wilayah Ganda Duncan. Hasil penelitian menunjukkan adanya interaksi rasio bakteri dengan konsentrasi ekstrak buah naga merah terhadap aktivitas antioksidan dan  pengaruh nyata (P<0.05) terhadap viskositas dan nilai  L*a*b* sedangkan pada  jumlah  BAL tidak berpengaruh nyata (P>0.05). Semakin tinggi rasio Bifidobacterium longum menghasilkan kenaikan viskositas dan semakin tinggi penambahan  konsentrasi ekstrak buah naga merah menghasilkan  kenaikan nilai a (warna merah - hijau)  sedangkan viskositas, nilai L (kecerahan) dan nilai b (biru – kekuningan) mengalami penurunan, dan jumlah BAL tidak berpengaruh nyata terhadap perlakuan.The  purpose of this research was to evaluate the interaction combination of treatments between starter ratio and the concentration of red dragon fruit (Hylocereus polyrhizus) extract of yogurt drink to  antioxidant activity, LAB, viscosity and L*a*b* score . The experiment design of  this research was completely randomized design  of factorial pattern with two factors and three replications. The first factor was a starter ratio, with has  three levels of  S1, 1(L. bulgaricus + S. termophilus): 1 B. longum; S2, 1( L. bulgaricus + S. thermophilus): 2 B. longum; and S3, 2 (L. bulgaricus + S. termophilus):1 B. longum) and  the second factor was the concentrations  of red dragon fruit extract having four levels (T0,  without red dragon fruit extract; T1, red dragon fruit extract 5%; T2, red dragon fruit extract 10%; T3, red dragon fruit extract 15% ). Variables tested for antioxidant activity, BAL, viscosity and  L*a*b* score . The variables were analyzed by ANOVA at 5% level  and continued by Duncan Multiple Range Test . The result showed that the interaction of bacteria ratio with red dragon fruit extract concentration on antioxidant activity and significant effect (P <0.05) on viscosity and L*a*b* score  while in LAB did not have significant effect (P> 0.05). The higher  ratio Bifidobacterium longum  resulted in increased viscosity and the higher concentration of red dragon fruit extract yields a (red - green) value rises while viscosity, L (brightness) and b (blue - yellow) values decrease.
Mengidentifikasi Peptida Bioaktif Angiotensin Converting Enzyme-inhibitor (ACEi) dari Kasein β Susu Kambing dengan Polimorfismenya Melalui Teknik In Silico Hermawan Setyo Widodo; Tridjoko Wisnu Murti; Ali Agus; Widodo Widodo
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.952 KB) | DOI: 10.17728/jatp.3008

Abstract

Susu kambing memiliki komponen protein salah satunya protein β dan secara umum terjadi polimorfisme pada level protein. Perubahan urutan asam amino akibat polimorfisme memungkinkan adanya potensi dihasilkannya peptida bioaktif penghambat enzim pengubah angiotensin (ACEi). Penelitian ini bertujuan untuk menyaring peptida bioaktif yang berpotensi sebagai ACEi dari kasein β kambing beserta polimorfismenya. Penelitian ini dilakukan dengan teknik in silico terhadap sekuen kasein β kambing serta struktur tiga dimensi human testicular ACE. Langkah yang dilakukan dalam penelitian ini meliputi simulasi pemotongan peptida dengan enzim pencernaan (pepsin, tripsin dan kimotripsin), peninjauan karakteristik peptida lalu simulasi docking ligan-reseptor. Tampilan parameter Lipinski’s Rule of Five (Ro5), bioaktivitas dan energi afinitas dipertimbangkan untuk memilih peptida bioaktif. Hasil yang didapat menunjukkan bahwa ditemukan peptida bioaktif yakni INK (Ile-Asp-Lys) yang memiliki kemampuan hampir setara dengan lisinopril (afinitas energi -8,2kkal/mol vs. -8,3kkal/mol). Peptida INK dapat ditemukan dari hasil hidrolisis dari alel A, C, D dan E, sehingga polimorfisme tidak menyebabkan perbedaan produksi peptida bioaktif. Kesimpulan yang dapat diambil yakni kasein β susu kambing jika dicerna dengan enzim pencernaan dapat menghasilkan peptida bioaktif ACEi yakni INK.Identification of Angiotensin Converting Enzyme-inhibitor (ACEi) Bioactive Peptide from Goat Milk β-Casein with It's Polymorphism by In Silico TechniqueAbstractPolymorphism eventually may be occurred at the protein level. Changes in the amino acid sequence due to polymorphism may exhibit a potential action to generate of the angiotensin-converting enzyme inhibitors (ACEi) bioactive peptide. This study is aimed to assess bioactive peptides that have a great potent value as ACEi from goat β casein along with its polymorphism. The research was done by in silico technique on goat β-casein sequence and three-dimensional structure human testicular ACE. Peptide-cutting simulations with digestive enzymes (pepsin, trypsin and chymotrypsin), peptide properties review, then ligand-receptor docking simulations was applied in this research. Appearance of Lipinski's Rule of Five (Ro5), bioactivity and affinity energy were considered for selecting bioactive peptides. The results show that bioactive peptide found as INK (Ile-Asp-Lys) which had similar ability as lisinopril (energy affinity –8.2kcal/mol vs. –8.3kcal/mol). The INK peptides could be found from the hydrolysis resulted in alleles A, C, D and E, therefore polymorphism did not affect the differences of production of bioactive peptides. A conclusion, processed goat milk β casein with digestive enzymes could produce ACEi of INK as bioactive peptide.
Formulasi Pasta Buah Merah (Pandanus conoideus Lamk) dan Tepung Ubi Jalar Mikmak (Ipomea batatas L) Lokal Wamena Untuk Produksi Saus Buah Merah Pedas Setiarto, Raden Haryo Bimo; Widhyastuti, Nunuk; Agustin, Nety; Rahmawati, Rahmawati; Wawo, Albert Husein
Jurnal Aplikasi Teknologi Pangan IN PRESS
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jatp.2529

Abstract

Red fruit (Pandanus conoideus Lamk) and sweet potatoes (Ipomea batatas L) is the endemic plant that grows in the plains of Wamena, Papua. Availability is quite abundant and it has not been utilized to the maximum, so that required further processing to increase its economic value. This study aims to determine the best formulation between red fruit paste and sweet potato flour to obtain spicy red fruit sauce product with good nutritional quality and organoleptic properties. The formulation of red fruit paste and sweet potato flour was done with six levels ie A1 (100%: 0%), A2 (95%: 5%), A3 (85%: 15%), A5 (80%: 20%), and A6 (75%: 25%). The quality of red spicy fruit sauce tested is physical quality (viscosity), chemical quality (total dissolved solids and pH value), and organoleptic quality (hedonic test and hedonic quality with color, taste, aroma and consistency parameters). Based on the results of the research, the best formulation was found in A2 treatment with the ratio of red fruit paste and sweet potato flour (95%: 5%). The product of spicy red fruit sauce produced is in conformity with Standard National Indonesian (SNI) as reference SNI 01-2976-2006 about chili sauce quality requirement on total parameters of soluble solids, total bacteria, total mold, flavor, and taste.
Peranan Daun Kumis Kucing (Orthosiphon stamineus Benth) dalam Mengeliminasi Kandungan Cd dan Pb pada Dada Ayam Broiler Bambang Dwiloka; Umiyati Atmomarsono; Valentinus Priyo Bintoro; Bhakti Etza Setiani
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (133.156 KB) | DOI: 10.17728/jatp.2447

Abstract

Penelitian ini bertujuan untuk mengetahui dan menjelaskan pengaruh daun kumis kucing (Orthosiphon stamineus Benth) dalam mengeliminasi Cd dan Pb pada paha ayam broiler yang diberi pakan mengandung logam berat (Cd.Cl2.4H2O). Perlakuan yang diberikan adalah perendaman larutan daun kumis kucing yang diikuti dengan proses perebusan. Kandungan Cd dan Pb yang dilakukan dengan Atomic Absorption Spectrophotometer. Data logam berat yang diperoleh dianalisis statistik dengan Anova. Hasil penelitian membuktikan bahwa dada ayam broiler yang diberi pakan mengandung CdCl2.4H2O ternyata mengandung Cd dan Pb, walaupun masih di bawah Maximum Residu Limit (MRL). Perlakuan perendaman dalam larutan daun kumis kucing yang dilanjutkan dengan perebusan mampu menurunkan nilai Cd pada dada ayam broiler. Sementara dengan perlakuan perendaman dalam larutan daun kumis kucing dan pada perlakuan perebusan mampu menurunkan kandungan Pb pada dada ayam broiler. Kesimpulannya, kandungan Cd dan Pb pada daging ayam broiler dapat diturunkan melalui perendaman daun kumis kucing.The Effect of Orthosiphon stamineus Benth (OSB) Leaf in Reducing Cd and Pb Content on Breast Broiler ChickenAbstractThe feed containing heavy metal was provided to broiler feeds in order to detect the residue of Cd and Pb in chicken broiler breast. The treatments for eliminating the residue was conducted by the immersion in the distilled water containing cat whiskers leaf. The boiling of chicken meat was also conducted. The content of metals was analysed by Atomic Absorption Spectrophotometer (AAS). The data were analysed statistically by ANOVA. As results, Cd and Pb were able to be detected in the chicken breast meat although still below the Maximum Residue Limit (MRL). The treatment of immersion in the cat whiskers leafs extract plus boiling in the distilled water were significantly (P <0.05) decrease Cd content. Meanwhile the treatment of immersion in the cat whiskers leaf extract and boiling treatment using distilled water significantly (P <0.05) decreased Pb in chicken breast carcass. As conclusion, Cd and Pb might be reduced by the immersion in the cat whiskers extract.••••••
Mikroenkapsulasi Senyawa Fenolik Ekstrak Daun Kenikir (Cosmos caudatus K.) Tagor Marsillam Siregar; Clarine Kristanti
Jurnal Aplikasi Teknologi Pangan Vol 8, No 1 (2019): Februari 2019
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.751 KB) | DOI: 10.17728/jatp.3304

Abstract

Daun Kenikir (Cosmos caudatus K.) memiliki kandungan senyawa fenolik dan aktivitas antioksidan tinggi yang telah diketahui sensitif terhadap cahaya, oksigen dan panas. Enkapsulasi dapat melindungi senyawa fenolik dalam ekstrak. Penelitian ini bertujuan untuk mempelajari pengaruh rasio bahan inti dan bahan penyalut (1:10 dan 1: 20) dan suhu inlet spray dryer (125, 150 dan 175oC) terhadap karakteristik mikrokapsul. Pada penelitian tahap pendahuluan, daun kenikir diekstraksi menggunakan pelarut etanol, kemudian ekstrak yang diperoleh dianalisis aktivitas antioksidan dan total fenolik. Pada tahap selanjutnya ekstrak dienkapsulasi dan mikrokapsul yang diperoleh dianalisis powder recovery, kandungan total fenolik, effisiensi enkapsulasi, aktivitas antioksidan dan ukuran partikel. Hasil penelitian menunjukkan bahwa rasio bahan inti dan bahan penyalut dan suhu inlet spray dryer mempengaruhi powder recovery, total fenolik, effisiensi enkapsulasi, aktivitas antioksidan dan ukuran partikel mikrokapsul. Perlakuan dengan rasio bahan inti dan bahan penyalut sebesar 1:20 dan suhu inlet spray dryer 125oC menghasilkan mikrokapsul dengan powder recovery 59,87%, total fenol 24,644 mgGAE/g sampel, efisiensi enkapsulasi 98,820%, aktivitas antioksidan (IC50) 1711,804 ppm dan ukuran partikel 1,55 µm. Kesimpulannya, rasio bahan inti dan bahan penyalut serta suhu inlet spray drying merupakan faktor yang sangat berperan penting dalam karakteristik mikroenkapsul.Microencapsulation of Phenolic Compounds From Cosmos caudatus K. Leaves ExtractAbstractCosmos caudatus K. leaves are high in total phenolic content and antioxidant activity that are sensitive to light, oxygen, and heat. Encapsulation process may protect the phenolic compounds of extract. This research was aimed to study the effect of the leaves extract and coating ratio (1:10 and 1:20) and various spray drying inlet temperatures (125, 150, and 175°C) towards the characteristics of microcapsules. In preliminary stage, Cosmos caudatus K. leaves were extracted with ethanol. The extract was analyzed for antioxidant activity and total phenolic content. In the beginning stage, the extract were encapsulated. The microcapsules were analyzed for powder recovery, total phenolic content, encapsulation efficiency, antioxidant activity, and particle size. As results, the extract and coating ratio as well as inlet temperature affected the powder recovery, total phenolic content, encapsulation efficiency, antioxidant activity, and particle size of microcapsules. Microcapsules with ratio of 1:20 and inlet temperature of 125°C provided the best result with powder recovery 59.87%, total phenolic content 24.644 mg GAE/g sample, encapsulation efficiency 98.820%, IC50 1711.804 ppm, and particle size 1.55 μm. As conclusion, the extract leaves and coating ratio as well as inlet temperature effected the characteristic of microencapsules.
Aktivitas Penangkalan Radikal Bebas dan Kemampuan Reduksi Ekstrak Kulit Kayu Akway (Drimys piperita Hook. f.) Gino Nemesio Cepeda; Meike Meilan Lisangan; Mathelda Kurniaty Roreng; Elva Intan Permatasari; Dolly Citra Manalu; Wulan Tanlain
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.388 KB) | DOI: 10.17728/jatp.3239

Abstract

Akway (Drimys piperita Hook. f) merupakan tumbuhan yang termasuk dalam kelompok tumbuhan berkayu, berdaun tebal aromatik dan termasuk kerabat winteraceae. Tumbuhan ini dimanfaatkan sebagai obat tradisional untuk mengobati malaria dan untuk meningkatkan vitalitas tubuh. Beberapa penelitian kandungan fitokimia ekstrak akway telah dilakukan untuk mengetahui potensi bioaktivitas akway. Ekstrak kulit kayu akway dilaporkan mengandung kelompok senyawa alkaloid, saponin, tanin, flavonoid, terpenoid dan glikosida. Minyak atsiri kulit kayu akway mengandung linalool, β-pinen, α-pinen, nerolidol dan terpineol. Senyawa-senyawa tersebut dilaporkan memiliki aktivitas antioksidan yang tinggi. Tujuan penelitian ini adalah untuk menentukan kapasitas antioksidan ekstrak kulit kayu akway secara in vitro dan vitamin C sebagai kontrol positif. Pengujian kapasitas antioksidan yang dilakukan meliputi kandungan total fenol dengan metode Folin-Ciocalteu, kandungan flavonoid dengan metode aluminum klorida, kapasitas penangkalan radikal bebas menggunakan metode DPPH (1,1-Diphenyl-2-picrylhydrazyl)-radical scavenging assay dan daya reduksi menggunakan metode reduksi Fe+3 menjadi Fe+2. Hasil penelitian menunjukkan bahwa ekstrak metanol memiliki kandungan total fenol dan flavonoid yang tertinggi dibandingkan dengan ekstrak etanol dan etilasetat. Kandungan total fenol dan flavonoid ekstrak metanol masing-masing sebesar 18,22 dan 14,32%. Ekstrak metanol dan vitamin C memiliki kapasitas menangkal radikal bebas DPPH dan daya reduksi yang paling tinggi kemudian diikuti ekstrak etanol dan etilasetat. Kemampuan menangkal radikal bebas ekstrak metanol dan vitamin C pada konsentrasi 200 µg/ml masing-masing sebesar 90% dan 88,31% sedangkan daya reduksi masing-masing sebesar 0,54 dan 0,62. Kesimpulannya, ekstrak metanol memiliki kapasitas antioksidan yang paling tinggi dibandingkan dengan ekstrak etanol dan etilasetat. Abstract Free Radical Scavenging Activity and Reducing Power of Akway (Drimys piperita Hook. f.) Bark ExtractsAkway (Drimys piperita Hook. f) was a woody and aromatic plant of winteraceae. This plant was used as traditional medical plant to heal malaria and to enhance vitality of body. Some studies were done to know bioactivity potency of akway extracts. D. piperita bark extract contains alkaloid, saponin, tanin, flavonoid, terpenoid and glycoside. The bark essential oil of the plant consists of lynalool, β-pinene, α-pinene, nerolidol and terpineol. Those compounds were exhibited high antioxidant activity. The objectives of this research were to determine total phenol and flavonoid of the extracts and its antioxidant capacity which was compared to antioxidant capacity of vitamin C. The assay of antioxidant capacity comprised of total phenol and flavonoid content, free radical scavenging activity, and reducing power. Total phenol and flavonoid was determined using Folin-Ciocalteu and aluminum chloride method, respectively while determination of free radical scavenging activity and reducing power using DPPH-radical scavenging and Fe+3 to Fe+2 reducing power method, respectively. The results indicated that methanol extract had the highest in total phenol and flavonoid content. Total phenol and flavonoid of methanol extract were 18.22% and 14.32%, respectively. Vitamin C and methanol extract had the highest DPPH (1,1-Diphenyl-2-picrylhydrazyl)-radical scavenging activity and reducing power, respectively. DPPH-radical scavenging activity of methanol extract and vitamin C in concentration of 200 µg/ml were 90% and 88.31%, respectively while its reducing power were 0.54 and 0,62, respectively. As conclusion, methanol extract had the highest antioxidant activity compared with ethanol and ethyl acetate extracts.
Kinetika Perubahan Mutu Minyak Buah Merah (Pandanus conoideus) Hasil Degumming Selama Penyimpanan Zita Letviany Sarungallo; Budi Santoso; Meike Meilan Lisangan; Sritina Noverita Paulina Paiki; Risma Uli Situngkir; Endah Ayudwi Asokawaty
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.352 KB) | DOI: 10.17728/jatp.2947

Abstract

Kandungan fosfolipid dalam minyak kasar buah merah merupakan masalah utama dalam pengolahannya menjadi berbagai produk pangan, yang dapat dihilangkan melalui proses degumming. Tujuan dari penelitian ini adalah untuk mendapatkan model kinetik perubahan kualitas minyak buah merah hasil degumming (MBMD) selama penyimpanan. MBMD dikemas dalam botol gelap dan disimpan pada suhu 60, 75, dan 90°C selama ± 15 hari untuk dievaluasi kadar air, kadar asam lemak bebas (ALB), bilangan peroksida dan total karotenoid. Perubahan kualitas MBMD selama penyimpanan dihitung menggunakan persamaan Arhennius dengan perangkat lunak Microsoft Excell 2007. Hasil penelitian ini menunjukkan bahwa mutu MBMD menurun dengan meningkatnya suhu dan waktu penyimpanan. Kadar ALB dan bilangan peroksida MBMD meningkat mengikuti ordo 0, dengan energi aktivasi (Ea) 22416 dan 34839 J/mol ˚K. Sedangkan, penurunan kadar karotenoid sesuai dengan ordo 1 dengan Ea 48504 J/mol ˚K. Kadar ALB MBMD dengan Ea terendah adalah yang paling sensitif terhadap kerusakan hidrolisis selama penyimpanan, dibandingkan bilangan peroksida, dan kadar karotenoid. Kesimpulannya, perkiraan umur simpan MBMD berdasarkan peningkatan kadar ALB dan bilangan peroksida berhasil untuk ditentukan. Kinetics of Quality Change of Degummed Red Fruit (Pandanus conoideus) Oil during StorageAbstract The main problem in crude red fruit oil (CRFO) is the phospholipid content. That problem can be eliminated through degumming process. The objective of this study was to obtain kinetic model of quality of degummed red fruit oil (DRFO) during storage. The DRFO was packaged in dark bottles and stored at 60, 75, and 90°C for ±15 days to evaluated of water content, free fatty acids (FFA), peroxide value and total carotenoids content. The quality change of DRFO during storage was calculated using Arhennius equation with Microsoft Excell 2007 software. The results showed that the quality of DRFO decreases with the increase of temperature and storage time. The FFA and peroxide value of DRFOs were increase following a zero order, with energy of activation (Ea) of 22416 and 34839 J/mol ˚K, respectively, while carotenoid content was decrease at the first order with Ea of 69009 J/mol ˚K. The FFA content of DRFOs (the lowest Ea) was the most sensitive to hydrolisys damaged during storage, compared to both peroxide value and carotenoid content. As conclusion, the shelf life estimation of the DRFO based on the increasing of both FFA and peroxide values were successfully formulated.
Pengaruh Penambahan Beberapa Konsentrasi Gula terhadap Stabilitas Warna Ekstrak Antosianin Buah Rukem (Flacourtia rukam Zoll. & Mor.) Salsabila Eka Ghina Rana; Lydia Ninan Lestario; Yohanes Martono
Jurnal Aplikasi Teknologi Pangan Vol 7, No 4 (2018): November 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (676.725 KB) | DOI: 10.17728/jatp.2581

Abstract

Penelitian ini bertujuan untuk menentukan pengaruh penambahan gula dengan konsentrasi yang bervariasi terhadap stabilitas warna ekstrak antosianin buah rukem yang terpapar cahaya lampu fluoresens berdasarkan kinetika degradasi warnanya dan menentukan konsentrasi gula yang optimal untuk meningkatkan stabilitas warna ekstrak antosianin buah rukem. Variasi konsentrasi gula yang digunakan adalah 20, 40, dan 60% (b/v). Uji stabilitas warna dilakukan terhadap ekstrak antosianin buah rukem yang disinari selama 10 jam dengan intensitas cahaya 3580, 4655 lux, dan 8544 lux. Metode yang digunakan yaitu pemodelan kinetika degradasi, dimana nilai konstanta laju degradasi (k) dan nilai waktu paruh (t1/2) dihitung berdasarkan orde reaksi yang sesuai. Degradasi antosianin mengikuti orde reaksi 0. Hasil penelitian menunjukkan bahwa penambahan gula 20% mampu meningkatkan stabilitas warna ekstrak antosianin buah rukem dibandingkan dengan kontrol (tanpa penambahan gula), terlihat dari meningkatnya waktu paruh dari 54,82 jam menjadi 61,35 jam. Namun, pada penambahan gula 40 dan 60% dapat menurunkan stabilitas warnanya dengan menurunnya waktu paruh dari 42,52 jam menjadi 31,66 jam pada intensitas 3580 lux. Kecenderungan kenaikan dan penurunan waktu paruh yang sama juga terjadi pada intensitas cahaya 4655 lux dan 8544 lux. Kesimpulannya, penambahan gula mempengaruhi stabilitas warna ekstrak antosianin buah rukem yaitu dapat meningkatkan dan menurunkan stabilitasnya.Effect of Various Concentration Sugar Addition on the Color Stability of Rukem Fruit Anthocyanin Extract (Flacourtia rukam Zoll. & Mor.)This study is aimed to determine the effect of sugar addition with varying concentrations to the color stability of anthocyanin extract of rukem fruit exposed to fluorescent lamp lights based on color degradation kinetics and determining the optimal sugar concentration to improve color stability of anthocyanin extract of rukem fruit. Variations of sugar concentration were 20, 40, and 60% (w/v). The color stability test was performed on the anthocyanin extract of rukem fruit which was irradiated for 10 hours with the light intensity of 3580, 4655, and 8544 lux. The degradation kinetics modeling was used as method, where the value of the degradation rate constant (k) and half-life value (t1/2) were calculated according to the appropriate reaction order. Degradation of anthocyanin was analyzed using zero order reaction. The results showed that sugar addition at 20% could increase the stability of rukem fruit anthocyanin extract compared to control (without sugar addition), that was reflected by increase of half-life from 54.82  to 61.35 hours. However, addition of 40 and 60% sugar decreased the color stability with the half-life decline from 42.52 to 31.66 hours. The similar half-life increase and decrease also occured at the intensity of light 4655 and 8544 lux. As conclusion, sugar addition might increase and decrease of the color stability in the extract rukem fruit.

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