Dewi Astuti , Herawati and D. Andang Arif , Wibawa (2009) PENGARUH KONSENTRASI SUSU SKIM DAN WAKTU FERMENTASI TERHADAP HASIL PEMBUATAN SOYGHURT. Envirotek : Jurnal Ilmiah Teknik Lingkungan, 2 (1). pp. 48-58. ISSN 2085-501-X

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      Soyghurt is the fermentation of soy milk by using Streptococcus thermophilus and Lactobacillus bulgaricus which have been commonly used in producing yoghurt. The process of fermentation in producing yoghurt, however, has some difficulty became the type of carbohydrate found in the soy milk is different from the one of ox milk. The carbohydrate of soy milk consists of some kind of oligosakarida which cannot be functioned as source of energy and carbon by the culture starter. To succed the fermentation, the sugar source of the soy milk must be increased first by adding ski milk before inoculated. The objective of this research is to identify the influence of concentrated skim milk and length of fermentation time in producing soyghurt toward its product. Producing soyghurt may begin from preparing the substances such as soy milk, 25 grams of crystal sugar, and concentrated skim milk which varies from 5 %, 10 %, 15 % , 20 % and then be heated add 80 – 95 oC until becoming homogenous. Next, it is cooled until 43 oC. After that, it is inoculated with plain which contains Stretococcus thermophillus and Lactobacillus bulgaricus, poured into the cup, and incubated at 39oC. In the incubation period of 0,2,4 and 6 hours, analysis is applied toward the rate of its fat, protein, dust, lactic acid, the dry net without fat, and the content of microbe. The result of this analysis indicates that the higher concentrated skim milk and the longger fermentation period cause the increase in the rate of protein, fat, dust, total lactic acid, and the dry net without fat. So, when thr higher concentrated skim milk is added, the activity of Streptococcus thermophillus and Lactobacillus bulgaricus used in the fermentation increase.

      Item Type: Article
      Subjects: T Technology > TD Environmental technology. Sanitary engineering
      Divisions: UPN Jatim Journal > Envirotek : Jurnal Ilmiah Teknik Lingkungan
      Depositing User: Users 2 not found.
      Date Deposited: 05 Apr 2011 09:20
      Last Modified: 05 Apr 2011 09:21

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