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    Efektifitas Pemberian Soyghurt terhadap Penurunan Kadar Kolesterol dalam Darah Mencit (Mus musculus) dengan Jumlah Bakteri Asam Laktat dan Suhu Inkubasi yang Optimum

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    Date
    2011
    Author
    Hasibuan, Rosmayani
    Advisor(s)
    Ilyas, Syafruddin
    Rusmarilin, Herla
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    Abstract
    The research of yoghurt preparation using the lactic acid bacteria Lactobacillus bulgaricus and Streptococcus thermophillus had conducted. This research aims to study the effectiveness of yoghurt to decrease the cholesterol concentration of mice. The research had been performed using design with two factors of treatment, i.e : optimum incubation, temperature ( 30; 35; 40⁰C ) and treatment application of yoghurt concentration ( 0.25; 0.5; 1% ). Analysis of the optimum total colony of lactic acid bacteria is based on Standard Plate Count. Identification of the the lactic acid bacteria was conducted with observation morphology characteristic and biochemical test. The morphology characteristic was conducted by Gram dying, while biochemical test was conducted by catalase test, carbohydrate fermentation, motility, nitrate reductation and temperature test. The results showed that the optimum temperature on preparation of yoghurt is 40⁰C and the total colony is 1.63 x 109 CFU/ml, while the the treatment application of yoghurt consentration 0.25%, 0.50%, and 1% toward mice indicated that the cholesterol concentration of mice was decreasing i.e : 18.43%, 22.18% and 35.75%. The application of 1% yoghurt concentration gave the best result significantly in 35.75%.
     
    Penelitian tentang pembuatan soyghurt dengan menggunakan bakteri asam laktat, Lactobacillus bulgaricus dan Streptococcus thermophillus. Penelitian ini bertujuan untuk mengetahui efektifitas soyghurt dalam menurunkan kadar kolesterol dalam darah mencit dengan jumlah bakteri asam laktat dan suhu inkubasi yang optimum. Perlakuan suhu inkubasi pada pembuatan soyghurt adalah 30⁰, 35⁰, dan 40⁰C. Analisa jumlah bakteri asam laktat berdasarkan Standar Plate Count. Identifikasi jenis bakteri dilakukan dengan pengamatan karakteristik morfologi dan uji biokimia. Karakteristik morfologi dilakukan dengan pewarnaan Gram, sedangkan uji biokimia dilakukan dengan uji katalase, fermentasi karbohidrat, motilitas, reduktase nitrat, dan uji ketahanan suhu. Hasil penelitian menunjukkan bahwa suhu yang optimal pada pembuatan soyghurt adalah 40⁰C dengan jumlah koloni sebesar 1,63 x 109 CFU/ml. Pemberian soyghurt dengan konsentrasi 0,25, 0,50 dan 1% kepada hewan uji (mencit) menunjukkan pengaruh yang berbeda terhadap penurunan kadar kolesterol dalam darah mencit, masing-masing 18,43, 22,18 dan 35,75%. Pemberian soyghurt dengan konsentrasi 1% menunjukkan penurunan kadar kolesterol yang paling significan yaitu 35,75%.

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    http://repositori.usu.ac.id/handle/123456789/39147
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    Repositori Institusi Universitas Sumatera Utara - 2025

    Universitas Sumatera Utara

    Perpustakaan

    Resource Guide

    Katalog Perpustakaan

    Journal Elektronik Berlangganan

    Buku Elektronik Berlangganan

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV