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Modifikasi Pati Keladi Dengan Metode Autoclaving-Cooling Sebagai Sumber Pangan Fungsional A.A. Istri Sri Wiadnyani; I.D.G. Mayun Permana; I.W. Rai Widarta
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 4 No 2 (2017): Scientific Journal of Food Technology
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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Limited functional characteristic of taro starch cause limited application on food product. It is a reason for physical modification of starch with autoclaving-cooling method intended to improve physical, chemical and functional characteristics of taro starch to broaden its usage on food industry and to increase its added value as functional food. In this research, taro starch modification was done with autoclaving-cooling method through modification cycles consisting of without cycle, one cycle, and two cycles. The results indicated that the best treatment is two-cycle autoclaving-cooling modification with swelling power of 8.28 g/g, solubility of 3.77%, amylose of 29.96%, resistant starch of 4.38% and no viscosity peak, but increase in viscosity continuously occur during heating till cooling of 3133.33 cp.

Kombinasi Berat Beban dan Lama Pengepresan pada Pembuatan Keju Lunak Rampelas (Ficus ampelas) dengan Koagulan Alami Pengganti Rennet I Made Sugitha; Ni Nyoman Puspawati; AAI. Sri Wiadnyani
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 4 No 1 (2017)
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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This aims of the research to obtain coagulant alternative materials as rennet replacement ,which until now its has still a great price and should to import for manufacturing process ofsoft cheese . The long-term goal of this research is to produce a good cheese qualityproduction by using a natural coagulant of babakan rampelas (Ficus ampelas) as rennetsubstitute has a price cheaper than the natural cheese processing product .. The specificpurpose of this research is to know the optimum pressing time and the heavy burden forproducing soft cheese product that combined with lactic acid bacteria in the proceses. Thisstudy used a Randomized Complete Design with time as a treatment consists of 4 levels,namely 12, 14, 16 and 18 hours and heavy pressing load l which consists of 3 levels i.e. 1 kg,1.5 kg and 2 kg. The treatment repeated as many as 3 times so that the retrieved 36 unitexperiment. The observed parameters include: Rendement, water, protein, fat, Lactic acidbacteria and sensory evaluation test. The conclution of the research that 16 hr and 2 kgloading weight of the best treatment were efected to rendement,(54.57%,; water( 64,22%);ash( 0,94%); protein(14,16%), fat(24,27%); and LAB content(5.0330 log cfu/g of soft cheseproduct.

Chemical Composition Of Modified Cocoyam Flour With Spontaneous Fermentation And Autoclaving-Cooling Cycles To Improved Resistant Starch Content A.A. Istri Sri Wiadnyani; I Ketut Suter; I W. Rai Widarta
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 5 No 1 (2018): Scientific Journal of Food Technology
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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This research was intended to identify chemical composition of cocoyam flour modified with spontaneous fermentation and autoclaving-cooling cycle in order to increase resistant starch content as functional food source. Increase of usage of modified cocoyam flour as product raw material and food ingredient is expected to improve physical characteristic and chemical characteristic of product resulted as well as to improve its potential as functional food source useful for health. The research did modification of caladium powder consisting of two factors. The first factor spontaneous fermentation method (without spontaneous fermentation F0; and with spontaneous fermentation, F1). The second factor is autoclaving-cooling cycle method consisting of three levels without autoclaving-cooling cycle (T0), one autoclaving-cooling cycle (T1) and two autoclaving-cooling cycles (T2). All treatments were repeated three times so there were 18 experiment units. Parameter observed in this research include water content, yield, amylase content, starch content and resistant starch. The best result of the research was spontaneous fermentation with following characteristic: yield 20.33%, water content 9.3%, starch content 75.16%, amylose content 25.95% and resistant starch content 13.89% and then was two autoclaving-cooling cycles with following characteristic: yield 18.48%, water content 8.87%, starch content 73.54%, amylose content 26.20% and resistant starch content 13.81%.

Pengaruh Penambahan Wortel (Daucus carota L) Terhadap Karakteristik Ledok Fransen Kennedy Hutabarat; Ni Made Yusa; A.A.I Sri Wiadnyani
Media Ilmiah Teknologi Pangan (Scientific Journal of Food Technology) Vol 4 No 2 (2017): Scientific Journal of Food Technology
Publisher : Master Program of Food Science and Technology, Faculty of Agricultural Technology, Udayana University

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This research was conducted to determine effect of carrot on the characteristics ledok and the proper concentration of a carrot right to produce ledok with the best characteristics. The research method was use a randomized block design analysis with 5 treatment of the concentration carrot additions of 0%, 10%, 20%, 30% and 40%. Each treatment was repeated three times to obtain 15 experimental units. Data were analyzed by analysis of variance followed by Duncan test. The results showed that the addition of carrots significant effect on water content, ash content, fat content, protein content, carbohydrate content, betacarotene levels and sensory attributes tests ledok. Based on nutrient content and sensory attributes of ledok, best amount is the addition of carrots 40% with the following characteristics water content 73,77%, ash content 0.96%, protein content 4,06%, carbohydrate content 16,34%, fat content 4,83%, betacarotene 379,85 ppm, colour 6,53, aroma 3,73, taste 5,73, and overall acceptance of 5,20.

Kajian Waktu dan Suhu Pelayuan Daun Alpukat dalam Upaya Pemanfaatanya sebagai Teh Herbal I Wayan Rai Widarta; Anak Agung Istri Sri Wiadnyani; I Dewa Gede Mayun Permana
Jurnal Aplikasi Teknologi Pangan Vol 7, No 2 (2018): Mei 2018
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Daun Alpukat mengandung komponen bioaktif yang tinggi sehingga dapat dimanfaatkan sebagai pangan fungsional seperti teh herbal. Tujuan dari penelitian ini adalah mendapatkan suhu dan waktu pelayuan daun alpukat yang tepat sehingga menghasilkan teh herbal dengan karakteristik sensoris terbaik serta komponen bioaktif dan aktivitas antioksidan yang tinggi. Pelayuan dilakukan dengan cara pengukusan pada suhu 80, 90, dan 100°C selama 1, 3 dan 5 menit. Karakteristik teh yang diamati meliputi kadar total tanin, kadar total fenol, total flavonoid dan aktivitas antioksidan serta evaluasi sensorisnya. Hasil penelitian menunjukkan bahwa suhu dan waktu pelayuan yang terbaik diperoleh pada suhu 90°C selama 5 menit dengan karakteristik teh herbal daun alpukat yang dihasilkan yaitu total fenolik 296,48 mg/g ekstrak, total flavonoid 644 mg/g ekstrak, total tanin 315,14 mg/g ekstrak, warna seduhan teh coklat kekuningan, rasa agak tidak pahit dan aroma agak khas daun alpukat serta dengan penerimaan keseluruhan agak suka. Sementara itu, nilai IC50 baik yang diukur dengan metode DPPH maupun reducing power masing-masing adalah 527,93 mg/L dan 78,95 mg/L. Kesimpulannya, suhu dan waktu pelayuan daun alpukat berpengaruh terhadap komponen bioaktif dan aktivitas antioksidan yang terkandung pada teh herbal yang dihasilkan.Study of Withering Time and Temperature Avocado Leafin the Useas Herbs TeaAvocado leaves contain high bioactive components that can be used as functional food such as herbal tea. The purpose of this research was to obtain the appropriate withering time and temperature to produce herbs tea with the best sensory characteristics, high bioactive compounds and antioxidant activity. The withering was carried out by steaming at 80, 90, and 100°C for 1, 3 and 5 minutes. The observation of herb tea characteristics were total tannin content, total phenolic content, total flavonoids, antioxidant activity, and sensory evaluation. The results showed that the best temperature and whithering time were obtained at 90°C for 5 minutes with the herb tea characteristic of total phenolic was 296.48 mg/g extract, total flavonoid was 644 mg/g extract, total tannin was 315.14 mg/g extract, yellowish brown tea color, slightly bitter taste and a rather typical scent of avocado leaf as well as with overall acceptance rather like. Whereas, IC50 value measured using DPPH and reducing power were 527.93 mg/L and 78.95 mg/L. As conclusion, temperature and whithering time effected to the bioactive component and antioxidant activity of herb tea.--

Pengaruh Metode Pengeringan terhadap Aktivitas Antioksidan Daun Alpukat I Wayan Rai Widarta; Anak Agung Istri Sri Wiadnyani
Jurnal Aplikasi Teknologi Pangan Vol 8, No 3 (2019): Agustus 2019
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Daun alpukat mengandung komponen bioaktif yang tinggi sehingga dapat dimanfaatkan sebagai sumber antioksidan alami. Tujuan dari penelitian ini adalah mendapatkan metode pengeringan yang tepat sehingga menghasilkan ekstrak daun alpukat dengan aktivitas antioksidan yang tinggi. Daun alpukat baik yang muda maupun yang tua dikeringkan dengan tiga metode pengeringan yaitu dijemur dibawah sinar matahari, dikeringanginkan dalam ruangan, dan dikeringkan dengan oven. Kualitas daun kering kemudian dianalisis aktivitas antioksidan, kadar air, total fenol, total flavonoid, dan total tanin. Hasil penelitian menunjukkan bahwa daun tua yang dikeringkan dengan menggunakan oven pada suhu 40˚C selama 24 jam menghasilkan aktivitas penghambatan radikal bebas tertinggi yaitu 19,83% dengan kadar air 7,54%, total fenol 6,42 mg/100 g ekstrak, total flavonoid 12,07 mg/100 g ekstrak, dan total tanin 2,48 mg/100 g ekstrak. Kesimpulannya, metode pengeringan dapat memberikan dampak terhadap kadar senyawa bioaktif ekstrak daun alpukat dan aktivitas antioksidannya.Effect of Drying Methods on the Antioxidant Activity of Avocado LeavesAbstractAvocado leaves contain high bioactive components that may be used as a source of natural antioxidants. The purpose of this study was to obtain proper drying method to produce avocado leaf extract with high antioxidant activity. Avocado leaves, both young and old, were dried with three drying methods, which were dried in the sun, room, and oven. Quality of leaves was then measured for antioxidant activity, moisture, total phenol, total flavonoid, total tannins. The results showed that old leaves dried using an oven at 40˚C for 24 hours resulted in the highest radical scavenging activity of 19.83% with 7.54% moisture content, 6.42 mg/100 g extract of total phenol, 12.07 mg/100 g extract of total flavonoid, and 2.48 mg/100 g extract of total tannins. In conclusion, the drying methods might produced specific antioxidant activities.

Sifat Fisik, Kimia, dan Sensori Mi Instant yang Terbuat dari Tepung Komposit Terigu dan Pati Kimpul Modifikasi I Nengah Kencana Putra; I Putu Suparthana; Anak Agung Istri Sri Wiadnyani
Jurnal Aplikasi Teknologi Pangan Vol 8, No 4 (2019): November 2019
Publisher : Faculty of Animal and Agricultural Sciences, Diponegoro University

Pati kimpul modifikasi (PKM) merupakan pati yang dibuat dari umbi kimpul yang diberikan perlakuan fisik atau kimia sehingga mempunyai sifat fungsional lebih baik dibandingkan dengan pati kimpul alami. Pada penelitian ini, dievaluasi pengaruh komposisi tepung komposit (terigu-PKM) terhadap sifat fisik, kimia, dan sensori mi instant. PKM dibuat menggunakan metode high moisture treatment (HMT), yaitu pemanasan pati pada suhu 110˚C pada kadar air 30% selama 10 jam. Tepung komposit dibuat dengan menggunakan berbagai perbandingan terigu dan PKM (90:10, 80:20, 70:30, 60:40, 50, dan 50). Selanjutnya, tepung komposit ini diolah menjadi mi instan, dan kemudian sifat fisik, kimia, dan sensori mi instan yang dihasilkan dievaluasi. Hasil penelitian menunjukkan perbandingan terigu dan PKM pada tepung komposit berpengaruh nyata terhadap kadar air, kadar protein, kadar karbohidrat, waktu pemasakan, kehilangan padatan akibat pemasakan (KPAP), dan daya serap air mi instan. Berdasarkan hasil uji sensori, tepung komposit terigu-PKM (80:20) menghasilkan mi instan terbaik. Komposisi zat gizi mi instan yang dihasilkan adalah: kadar air (2,74%), lemak (29,19%), protein (7,68%), dan karbohidrat (58,91%). Mi instan terigu-PKM (80:20) memiliki aroma lebih baik, waktu pemasakan lebih singkat, dan daya serap air lebih baik dibandingkan mi terigu 100%, namum memiliki KPAP lebih tinggi. Kesimpulannya, PKM dapat digunakan sebagai pensubstitusi sebagian terigu dalam pembuatan mi instant.Physical, Chemical, and Sensory Properties of Instant Noodles Prepared from Wheat - Modified Tannia Starch CompositeAbstractModified tannia starch (MTS) is the starch made from tannia tuber, which is provided a physical or chemical treatment so that it has better functional properties compared to native tannia starch. In this study, the effect of the composition of the wheat flour-MTS composite on the physical, chemical, and sensory properties of instant noodles was evaluated. MTS was produced by using the high moisture treatment (HMT) method, which was heating the starch at the temperature of 110˚C and moisture content of 30% for 10 hours. The composite flour was made with various ratios of wheat flour and MTS (90:10, 80:20, 70:30, 60:40, 50, and 50). Subsequently, the composite flour was processed into instant noodles, and then the physical, chemical, and sensory properties of the noodles produced were evaluated. The results showed the ratio of wheat flour and MTS had a significant effect on the water content, protein content, carbohydrate content, cooking time, cooking loss, and water absorption capacity of the instant noodle. Based on the results of sensory evaluation, the composite of wheat flour-MTS (80:20) could produce the best instant noodles. The nutrition composition of the instant noodles produced, namely: water content (2.74%), fat content (29.19%), protein content (7.68%), and carbohydrate content (58.91%). If compared to the 100% wheat flour instant noodles, the wheat flour-MTS (80:20) instant noodles has a better aroma, better water absorption capacity, and shorter cooking time, but it has a higher cooking loss. In conclusion, MTS can be used as a partial substitute for flour in making instant noodles.

Kajian Waktu dan Suhu Pelayuan Daun Alpukat dalam Upaya Pemanfaatanya sebagai Teh Herbal I Wayan Rai Widarta; Anak Agung Istri Sri Wiadnyani; I Dewa Gede Mayun Permana
Jurnal Aplikasi Teknologi Pangan Vol 7, No 2 (2018): Mei 2018
Publisher : Indonesian Food Technologists

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jatp.2163

Daun Alpukat mengandung komponen bioaktif yang tinggi sehingga dapat dimanfaatkan sebagai pangan fungsional seperti teh herbal. Tujuan dari penelitian ini adalah mendapatkan suhu dan waktu pelayuan daun alpukat yang tepat sehingga menghasilkan teh herbal dengan karakteristik sensoris terbaik serta komponen bioaktif dan aktivitas antioksidan yang tinggi. Pelayuan dilakukan dengan cara pengukusan pada suhu 80, 90, dan 100°C selama 1, 3 dan 5 menit. Karakteristik teh yang diamati meliputi kadar total tanin, kadar total fenol, total flavonoid dan aktivitas antioksidan serta evaluasi sensorisnya. Hasil penelitian menunjukkan bahwa suhu dan waktu pelayuan yang terbaik diperoleh pada suhu 90°C selama 5 menit dengan karakteristik teh herbal daun alpukat yang dihasilkan yaitu total fenolik 296,48 mg/g ekstrak, total flavonoid 644 mg/g ekstrak, total tanin 315,14 mg/g ekstrak, warna seduhan teh coklat kekuningan, rasa agak tidak pahit dan aroma agak khas daun alpukat serta dengan penerimaan keseluruhan agak suka. Sementara itu, nilai IC50 baik yang diukur dengan metode DPPH maupun reducing power masing-masing adalah 527,93 mg/L dan 78,95 mg/L. Kesimpulannya, suhu dan waktu pelayuan daun alpukat berpengaruh terhadap komponen bioaktif dan aktivitas antioksidan yang terkandung pada teh herbal yang dihasilkan.Study of Withering Time and Temperature Avocado Leafin the Useas Herbs TeaAvocado leaves contain high bioactive components that can be used as functional food such as herbal tea. The purpose of this research was to obtain the appropriate withering time and temperature to produce herbs tea with the best sensory characteristics, high bioactive compounds and antioxidant activity. The withering was carried out by steaming at 80, 90, and 100°C for 1, 3 and 5 minutes. The observation of herb tea characteristics were total tannin content, total phenolic content, total flavonoids, antioxidant activity, and sensory evaluation. The results showed that the best temperature and whithering time were obtained at 90°C for 5 minutes with the herb tea characteristic of total phenolic was 296.48 mg/g extract, total flavonoid was 644 mg/g extract, total tannin was 315.14 mg/g extract, yellowish brown tea color, slightly bitter taste and a rather typical scent of avocado leaf as well as with overall acceptance rather like. Whereas, IC50 value measured using DPPH and reducing power were 527.93 mg/L and 78.95 mg/L. As conclusion, temperature and whithering time effected to the bioactive component and antioxidant activity of herb tea.--

Pengaruh Penambahan Ekstrak Bunga Telang (Clitoria ternatea Linn) Terhadap Karakteristik Marshmallow I Gusti Ayu Padmawati; I Desak Putu Kartika Pratiwi; Anak agung Istri Sri Wiadnyani
Jurnal Ilmu dan Teknologi Pangan (ITEPA) Vol 11 No 1 (2022): Jurnal ITEPA
Publisher : Department of Food Science and Technology Study Program, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/itepa.2022.v11.i01.p05

This research was aimed to determine the effect of addition of blue butterfly pea extract on the characteristics of marshmallow and to determine the concentration of blue butterfly pea extract that produced the best characteristics of marshmallow. This research used completely randomized design with concentration of blue butterfly pea extract as treatments, which consisted of five levels: 0%, 0.3%, 0.6%, 0.9%, and 1.2%. The observed parameters include the physical, chemical, and sensory properties. The result showed that the five concentrations of blue butterfly pea extract had a significant effect on texture, color intensity, water content, anthocyanins, antioxidant activity, color (scoring and hedonic), flavor, texture, aroma, overall acceptance (hedonic) of the product. Selected product was marshmallow with the addition of 1.2% blue butterfly pea extract. The product has texture parameters of 1.28 N, color intensity L 16.71, a* 11.68, b* 7.62, 1.36% water, 1.48 mg/100 g anthocyanin, 43.50% antioxidant activity, blue color and liked, aroma, taste and overall acceptance were liked.

Pengaruh Konsentrasi Tween 80 Terhadap Karakteristik Serbuk Pewarna Daun Singkong (Manihot utilissima Pohl.) Pada Metode Foam Mat Drying Debora Prisceilla Isabella; Gusti Ayu Kadek Diah Puspawati; Anak agung Istri Sri Wiadnyani
Jurnal Ilmu dan Teknologi Pangan (ITEPA) Vol 11 No 1 (2022): Jurnal ITEPA
Publisher : Department of Food Science and Technology Study Program, Faculty of Agricultural Technology, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/itepa.2022.v11.i01.p12

Cassava leave is one type of leaf that has high chlorophyll so it can be used as a natural green dye, but using of it was still limited and needs to develop. This study aimed to determine the effect of the concentration of tween 80 on the characteristic of the pigment powder of cassava leave on foam mat drying method and to proper concentration of tween 80 to get the pigment powder of cassava leave with the best characteristic on foam mat drying method. The research design used was a Completely Randomized Design (CRD) with tween 80 concentration treatment consisting of 5 levels (0%; 0.5%; 1%; 1.5%; 2%). The experiment was repeated three times to obtain 15 experimental units. The data obtained were analyzed by the analysis of variance and if the treatment had a significant effect to variable observed, it was continued with Duncan’s Multiple Range Test. The parameters observed in this study included: yield, moisture content, total chlorophyll, solubility and L*, a*, b* values. The results showed that the concentration of tween 80 had a significant effect (P<0,05) on yield, moisture content, total chlorohyll, solubility and L*, a*, b* values. The best treatment was obtained at a concentration level of tween 80 at 1.5% with characteristic: yield of 11.51%, moisture content of 2.08%, total chlorophyll of 6.87 mg/g, solubility of 85.47%, the L* value of 11.53, the a* value of -38.30, and the b* value of 15.83.

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