Yurliasni Yurliasni
Jurusan Peternakan, Fakultas Pertanian, Universitas Syiah Kuala

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ANALISA KUALITAS KIMIA DAN MIKROBIOLOGI SUSU KAMBING PERANAKAN ETAWA DENGAN PEMBERIAN PAKAN YANG DITAMBAHKAN TEPUNG KULIT MANGGIS PADA PERSENTASE YANG BERBEDA Dzarnisa, Dzarnisa; Novita, Cut Intan; Yurliasni, Yurliasni; Handayani, Tri; Anggaini, Siti
Jurnal Ilmu dan Teknologi Hasil Ternak (JITEK) Vol 14, No 1 (2019)
Publisher : Jurnal Ilmu dan Teknologi Hasil Ternak (JITEK)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jitek.2019.014.01.4

Abstract

Upaya peningkatan produksi dan kualitas susu dapat dilakukan melalui perbaikan mutu genetik dan pakan yang baik serta tepat. Pemeliharaan ternak kambing perah merupakan salah satu alternatif upaya diversifikasi ternak perah selain sapi. Dalam meningkatkan produksi susu dibutuhkannya bahan tambahan dalam pakan, salah satunya adalah dengan penambahan tepung kulit manggis (Garcinia mangostana L.). Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian tepung kulit manggis terhadap sifat kimia dan kemampuan tepung kulit manggis dalam menghentikan aktifitas mikroba dalam susu. Penelitian ini dilakuan pada bulan maret - Juli 2017 di UD Atjeh Livestock, Desa Limpok, Kecamatan Darussalam, Kabupaten Aceh Besar. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dengan cara mengelompokkan menjadi 3 kelompok dan 5 perlakuan sehingga diperoleh 15 satuan percobaan. Masing-masing perlakuan terdiri dari perlakuan 1 (Ransum kontrol, tanpa penggunaan tepung kulit manggis), perlakuan 2 (Ransum dengan penambahan tepung kulit manggis 2,5%), perlakuan 3 (Ransum dengan penambahan tepung kulit manggis 5%), perlakuan 4 (Ransum dengan penambahan tepung kulit manggis 7,5%), perlakuan 5 (Ransum dengan penambahan tepung kulit manggis 10%). Data penelitian yang diperoleh dianalisis menggunakan ANOVA (Analysis of Variance) setiap perlakuan terdiri dari tiga ulangan. Parameter yang diamati adalah  aktivitas antioksidan, kadar protein, kadar bahan kering susu, perhitungan jumlah total mikroba, pengukuran pH, asam laktat dan uji antimikroba susu kambing Peranakan Etawa yang diberikan tepung kulit manggis. Materi yang digunakan pada penelitian ini yaitu tepung kulit manggis dan kambing perah peranakan Etawa. Penambahan tepung kulit manggis (TKM) pada pakan Kambing Peranakan Etawa tidak memberikan pengaruh terhadap kadar antioksidan, pH susu, bahan kering susu, total mikroba, asam laktat, dan antimikroba susu, akan tetapi berpengaruh nyata terhadap kadar protein susu dan masih sesuai dengan standar SNI. Penambahan tepung kulit manggis dapat meningkatkan kadar antioksidan sampai pada taraf pemberian 5%, meningkatan kadar protein dan bahan kering susu sampai pada taraf pemberian 7,5%.       
POTENSI MADU DALAM MENINGKATKAN KUALITAS MINUMAN KEFIR Yurliasni, Yurliasni; Hanum, Zuraida; Hikmawan, Ridha
Jurnal Ilmu dan Teknologi Hasil Ternak (JITEK) Vol 14, No 1 (2019)
Publisher : Jurnal Ilmu dan Teknologi Hasil Ternak (JITEK)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jitek.2019.014.01.6

Abstract

Suatu penelitian telah dilakukan tentang manfaat madu sebagai salah satu senyawa yang dapat meningkatkan kualitas kefir. Tujuannya adalah ingin mengetahui pengaruh penambahan madu tehadap kualitas kefir sebagai minuman yang bersifat terapeutik. Rancangan Acak lengkap pola faktorial digunakan dalam penelitian ini yang terdiri dari dua faktor masing-masing faktor A adalah persentase starter yang terdiri dari     2 level yaitu 7,5 dan 15%, faktor B adalah persentase madu yang terdiri dari  3 level yaitu  0, 4 dan 8%  serta setiap perlakuan diulang sebanyak 3 kali. Parameter yang diamati antara lain pH, kadar protein dan kadar antioksidan. Hasil penelitian menunjukkan bahwa penggunaan madu berpengaruh sangat nyata P (<0.01) terhadap pH kefir dan kadar  protein serta meningkatkan kadar antioksidan. Terdapat interaksi antara persentase starter dan madu pada level  masing-masing 15 %  dan 4 %. Hasil analisis menunjukkan bahwa penambahan madu mampu menigkatkan nilai pH pada kisaran 3,60 sampai 3,77, pada level starter 7,5 dan 4 % madu. Interaksi antara level starter dan madu berpengaruh terhadap kadar protein,  dan  terjadi peningkatan kadar antioksidan pada penambahan madu 4%. Berdasarkan hal tersebut dapat disimpulkan bahwa madu merupakan bahan yang sangat potensial dalam meningkatkan kualitas kefir sebagai minuman fermentasi pada level 15% starter dan 4% madu
FACTORS INFLUENCING IMUNITY AND RESISTANCE OF PEDIOCOCCUS ACIDILACTICI TO BACTERIOCIN, PEDIOCIN ACH Yurliasni, Yurliasni
Jurnal Agripet Vol 2, No 1 (2001): Volume 2, No. 1, April 2001
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v2i1.3088

Abstract

ABSTRACT Di dalam pediaosin Ach yang dihasilkan oleh bakteri Pediococcus acidilactici, kedua gen untuk produksi pediosin dan kekebalan terhadap pediosin dikode oleh plasmid pSMB74 pada 8,9 kb. Dengan hilangnya plasmid ini dapat menghilangkan kemampuan bakteri untuk mengahsilkan pediosin AcH, tetapi beberapa masih bertahan terhadap pediosin. Bakteri yang bertahan adalah jenis antara yaitu diperoleh pada saat sel yang tidak dapat berproduksi ditumbuhkan pada media yang mengandung pediosin AcH, tetapi hilang ketika sel ditumbuhkan tanpa adanya pediosin AcH.
PENGARUH PERBEDAAN SUHU PEMANASAN TERHADAP AKTIVITAS ANTIBAKTERI SUSU KAMBING FERMENTASI MENGGUNAKAN LACTOBACILLUS PLANTARUM Hanum, Zuraida; Yurliasni, Yurliasni; Wajizah, Sitti; Juanda, Juanda
Jurnal Agripet Vol 19, No 2 (2019): Volume 19, No. 2, Oktober 2019
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v19i2.14330

Abstract

ABSTRAK. Penelitian ini bertujuan untuk melihat pengaruh suhu pemanasan yang berbeda terhadap aktivitas antibakteri susu kambing fermentasi menggunakan starter Lactobacillus plantarum. Bakteri uji yang digunakan berasal dari golongan Enterobacteriaceae yaitu Escherichia coli dan Salmonella.sp. Rancangan penelitian yang digunakan adalah RAL (Rancangan Acak Lengkap) Faktorial yang terdiri dari 2 faktor yaitu faktor A adalah suhu pemanasan, yaitu a1 (suhu pemanasan 72°C), a2 (suhu pemanasan 121°C) dan faktor B adalah level penambahan Lactobacillus plantarum yaitu perlakuan b1 (Lactobacillus plantarum 2,5%), b2 (Lactobacillus plantarum 5%), b3 (Lactobacillus plantarum 7,5%), masing-masing perlakuan diulang sebanyak 3 kali sehingga diperoleh 18 unit percobaan. Apabila terdapat perbedaan yang nyata maka dilanjutkan dengan uji jarak berganda Duncan. Hasil penelitian menunjukkan adanya interaksi dari suhu pemanasan yang berbeda dan penambahan L. plantarum pada susu kambing berpengaruh nyata terhadap kadar asam laktat dan daya hambat pada Salmonella sp, akan tetapi tidak berpengaruh nyata terhadap E. coli. Kesimpulan dari penelitian ini diperoleh suhu pasteurisasi dengan penambahan 7.5 % L.plantarum merupakan nilai terbaik dalam menghambat Salmonella dan E..coli.  (Effect of different heating temperature on antibacterial activity of goat milk fermented with Lactobacillus Plantarum) ABSTRACT. This study aimed to determine the effect of the different heating temperatures on inhibitory activity of fermented goat's milk with Lactobacillus plantarum. The test bacteria used were Enterobacteriaceae, namely Escherichia coli and Salmonella.sp. The design applied is CFD (Completely Randomized Design) consisting of 2 factors, namely factor A heating temperature with two levels a1 (72°C), a2 (121°C) and factor B is the level of Lactobacillus plantarum addition by three levels, namely b1 (Lactobacillus plantarum 2.5%), b2 (Lactobacillus plantarum 5%), b3 (Lactobacillus plantarum 7.5%), and the treatments were repeated 3 times. The results showed that different heating temperature and level of L. plantarum added in fermented goat milk significantly affected the levels of lactic acid and inhibitory power on Salmonella sp, but not on E. coli. In conclusion is different heating temperatures and addition of L. plantarum on goat milk at significantly affected on inhibitory power on Salmonella sp, but not on E. coli. The results obtained pasteurisasi with 7.5% L.plantarum could be applied.
AKTIVITAS ANTIMIKROBA KHAMIR ASAL DADIH (SUSU KERBAU FERMENTASI) TERHADAP BEBERAPA BAKTERI PATOGEN Yurliasni, Yurliasni
Jurnal Agripet Vol 10, No 1 (2010): Volume 10, No. 1, April 2010
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v10i1.633

Abstract

Antimicroba activity of yeast dadih (buffalo milk fermentation) origin on pathogenic bacteriaABSTRACT. Research was carried out to study the effect of antimicrobial activity of yeast found in dadih. Yeasts chosen were isolated from dadih (traditionally buffalo milk fermentation). The objective is to know the ability of yeast to inhibit the growth of pathogenic bacteria in milk. They were Candida curiosa, Brettanomyces custersii, and Kluyveromices lactis. Kluy. lactis has strong antimicrobial on Bacillus subtilis with zone of inhibition ± 5mm, C. curiosa on E.coli (5mm) and C. curiosa and Brett. custersii also have strong antimicrobial on S. aureus consecutively 5,75 and 7 mm. As a conclusion the result showed that all of three yeasts selected have capability to stop the growth of pathogenic bacteria of buffalo milk origin in five days.
ANALISA KEASAMAN DAN TOTAL BAKTERI ASAM LAKTAT YOGURT AKIBAT BAHAN BAKU DAN PERSENTASE LACTOBACILLUS CASEI YANG BERBEDA Zakaria, Yusdar; Yurliasni, Yurliasni; Delima, Mira; Diana, Ely
Jurnal Agripet Vol 13, No 2 (2013): Volume 13, No. 2, Oktober 2013
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v13i2.817

Abstract

Analyze of acidity and amount of lactic acid bacteria of yogurt made from different milk types and lactobacillus casei percentageABSTRACT. The objective of this experiment is to determine the effect of milk types and percentages of Lactobacillus casei as a starter to the amount of Lactic Acid Bacteria in yogurt and its pH value and Lactic Acid value.  Factorial Completely Randomized Design with two factors and three replications was applied.  The A factor was the milk types that were a1 = Powder Milk, a2 = Fresh Milk and a3 = UHT milk.  The B factor was the percentages of Lactobacillus casei  (b1 = 5% and b2 = 10%).  Parameters observed were the level of lactic acid, the pH value of yogurt and the amount of lactic acid bacteria.  The result showed  significantly difference (P 0.01) from the use of milk types and Lactobacillus casei percentages on the lactic acid level, and there are no interaction between factors.  There was also significant different (P 0.01) showed from pH value and an interaction between both factors was presented.  In addition there was significant difference (P 0.05) showed by the amount of lactic acid bacteria, and an interaction between both factors was also existed.  The research concluded that the higher the percentage of starter, the higher the level of lactic acid and the amount of lactic acid bacteria of yogurt that made from all milk types.  On the contrary, the higher the percentage of starter, the lower the pH value of yogurt.
NILAI NUTRISI DADIH YANG DITAMBAHKAN KHAMIR ASAL DADIH Yurliasni, Yurliasni; Zakaria, Yusdar; Usman, Yunasri
Jurnal Agripet Vol 14, No 2 (2014): Volume 14, No. 2, Oktober 2014
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v14i2.1891

Abstract

(Nutritive value of  dadih added with yeast of dadih origin)ABSTRACT. Dadih is traditionally fermented buffalo milk product which is along with lactic acid bacteria (LAB), a diversity of yeast species involved in fermentation process. The existence of yeast in dadih gives positive contribution either in aroma or their role in securing a good product. There were three different dadih origin yeasts involved in this experiment  (Candida curiosa, Brettanomyces custersii and Kluyveromyces lactis.) The objective of this research is   to study more about growth and yeasts role  on dadih fermentation in order to find positive value of yeast to keep  nutritive value of dadih. Completely Randomized Designed used with four treatments. The treatments given was percentage of combined yeast culture which were P0 (buffalo milk + LAB), P1 (buffalo milk + LAB + 0,5% yeast culture), P2 (buffalo milk + LAB + 1,0% yeast culture), and P3 (buffalo milk + LAB + 1,5% yeast culture), by seven replication. The difference effect between treatment was tested by using Duncan?s Multiple Range Test. The Results showed that addition of yeast culture in dadih effect the pH, total of microorganism, degree of  lactic acid, protein and dadih fat significantly. Overall dadih  added with 1% yeast culture (P2) increase 14% degree of protein and decrease 2,7% degree of dadih fat.
Studi Potensi Buah Kurma (Phoenix dactylifera L), Suhu dan Lama Penyimpanan terhadap Perubahan karakterisitk Susu Acidophillus Martha, Sarlini; Yurliasni, Yurliasni; Zakaria, Yusdar
Jurnal Ilmiah Mahasiswa Pertanian Vol 2, No 4 (2017): November 2017
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.582 KB)

Abstract

Abstrak.  Kualitas susu fermentasi sangat dipengaruhi oleh pertumbuhan mikroba, kadar air, proses pengolahan, suhu dan lama penyimpanan. Variasi dan fluktuasi suhu pada saat penyimpanan dapat mempengaruhi mutu baik secara fisik, kimia dan mikrobiologi. Penelitian bertujuan untuk mempelajari pengaruh suhu dan lama penyimpanan yang berbeda pada susu Acidophillus yang ditambah buah kurma. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial yang terdiri dari 2 faktor yaitu faktor A (suhu) terdiri dari A1=5 °C, A2=10 °C. Faktor B (lama penyimpanan) terdiri B1=0 hari, B2=14 hari, B3=28 hari, B4=42 hari dan dianalisis meliputi viabilitas L. acidophillus, nilai pH, kadar asam laktat, sineresis, dan kadar protein. Hasil analisis menunjukkan bahwa lama penyimpanan berpengaruh sangat nyata (P<0.01) terhadap viabilitas L. acidophillus, nilai pH, kadar asam laktat dan kadar protein, akan tetapi pada sineresis tidak terdapat pengaruh yang nyata.  Disimpulkan bahwa lama penyimpanan dapat mengakibatkan pertumbuhan L. acidophillus tidak stabil dan terjadinya perubahan karakteristik fisik susu Acidophillus.Study of dates Potensil (Phoenix dactylifera L), Temperature and Storage Length on Change of Acidophillus milk CharacteristicsAbstract. The quality of fermented milk is strongly influenced by the growth of microbes, moisture content, processing, temperature and storage time. Variations and fluctuations in temperature during storage may affect the quality of both physical, chemical and microbiological. The study aimed to study the effect of temperature and different storage time on Acidophillus milk plus dates.This research uses Completely Randomized Design (RAL) of factorial pattern consisting of 2 factors ie factor A (temperature) consisting of A1 = 5 °C, A2 = 10 °C. Factor B (storage duration) consisted of B1 = 0 days, B2 = 14 days, B3 = 28 days, B4 = 42 days and analyzed including viability of L. acidophillus, pH value, lactic acid level, syneresis, and protein content.The results showed that storage duration had significant effect (P <0.01) on the viability of L. acidophillus, pH value, lactic acid level and protein content, but there was no significant effect on sineresis. It was concluded that long storage may lead to unstable growth of L. acidophillus and the change in physical characteristics of Acidophilus milk.
PENGARUH WARNA KERABANG DAN LAMA PENYIMPANAN PADA SUHU BEEBEDA TERHADAP KUALITAS SUHU KONSUMSI Yurliasni, Yurliasni; Latif, Herawati
Jurnal Agripet Vol 7, No 1 (2007): Volume 7, No. 1, April 2007
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/agripet.v7i1.3310

Abstract

ABSTRACT. The objective of this research is to learn the effect of shell color and storage length on egg quality. The research was held at the Animal Nutrion Laboratory Departement of Agriculture, Syiah Kuala University. The treatments were shell color 30 SC (dark brown): 30-40 SC (white) with 10 replication and store in 27 0C and 10 0C for 35 days. The observation was taken every 7 days. Parameters measured were foam ability and Haugh Unit by group random sampling design with factorial pattern. The result shows that temperature and storage length significantly effect foam ability but not in haugh unit. Storage temperature and storage temperature at 10 0C show that foam ability is better with the average of 422.31 cm3. Compared to 27 0C with the average of 394.04 cm3. On the other hand shell color has no effect both on foam ability and Haugh Unit. In general, shell color, storage length and storage temperature have no effect on egg quality.
DINAMIKA PERTUMBUHAN LACTOBACILLUS CASEI DAN KARAKTERISTIK SUSU FERMENTASI BERDASARKAN SUHU DAN LAMA PENYIMPANAN Ayuti, Siti Rani; Nurliana, Nurliana; Yurliasni, Yurliasni; Sugito, Sugito; Darmawi, Darmawi
Jurnal Agripet Vol 16, No 1 (2016): Volume 16, N0. 1, April 2016
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v%vi%i.3476

Abstract

ABSTRAK. Mutu susu fermentasi sangat dipengaruhi oleh bahan baku, proses pengolahan, proses fermentasi, dan penyimpanan. Perubahan nilai gizi dapat terjadi karena variasi dan fluktuasi suhu dan penyimpanan akan mempercepat kerusakan susu fermentasi. Penelitian bertujuan untuk mempelajari pengaruh suhu dan lama penyimpanan yang berbeda pada susu fermentasi terhadap pertumbuhan L. casei dan karakteristik susu fermentasi. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial yang terdiri dari 2 faktor yaitu faktor A (suhu) terdiri dari a1=4-10?C, a2=10-16?C. Faktor B (lama penyimpanan) terdiri b1=0 hari b2=30 hari, b3=60 hari, b4=90 hari dan dianalisis meliputi jumlah total bakteri L. casei, nilai derajat keasaman (pH), kadar asam laktat, sineresis, dan kadar alkohol. Hasil analisis menunjukkan bahwa perlakuan suhu dan lama penyimpanan berpengaruh sangat nyata (P 0.01) terhadap total bakteri, sineresis, kadar alkohol, asam laktat, tetapi pada pH terjadi interaksi antara suhu dan penyimpanan. Disimpulkan bahwa suhu dan lama penyimpanan dapat mengakibatkan pertumbuhan L. casei tidak stabil dan terjadinya perubahan karakteristik fisik susu fermentasi L. casei.  (Growth dynamics of Lactobacillus casei and characteristics of milk fermentation based on temperature and storage time) ABSTRACT. Fermented milk quality is strongly influenced by raw materials, processing, fermentation and storage. Changes in nutritional value may occur due to variations and fluctuations in temperature and storage will accelerate damage fermented milk. The research aimed to study the effect of temperature and different storage length of fermented milk on the growth of L. casei and characteristics of fermented milk. The study used completely randomized design (CRD) with factorial pattern which are consisted of two factors. Factor A (storage temperature) they were a1=4-10?C, a2=10-16?C. Factor B (storage time) they were b1=0 days, b2=30 days, b3=60 days, b4=90 days and analyzed include the total number of bacteria L. casei, the value of the degree of acidity (pH), lactic acid levels, syneresis, and alcohol content. The results showed that the temperature and storage time was highly significant (P 0.01) effect the total bacteria, syneresis, alcohol level, lactic acid level, and there was interaction between temperature and storage time on pH. It can conclude that the temperature and storage time affect the growth of L. casei unstable and changes in the physical characteristics of L. casei fermented milk.