Pengembangan Proses Inovatif Kombinasi ReaksiHidrolisis Asam dan Reaksi Photokimia UV untuk Produksi Pati Termodifikasi dari Tapioka

Pudjihastuti, Isti and Sumardiono, Siswo (2011) Pengembangan Proses Inovatif Kombinasi ReaksiHidrolisis Asam dan Reaksi Photokimia UV untuk Produksi Pati Termodifikasi dari Tapioka. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” 2011. ISSN 1693 – 4393

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    Abstract

    Modified starch is a very prospective conversion starch in the food industry. The main consideration of the research is the increasing volume of wheat import and industries demand of modified starch. The research method is by acid hydrolysis using lactic acid and UV photochemical and reaction as catalyst of tapioca in order to modify physicochemical and rheological properties. The purpose if this research to study the effect of acid concentration, UV lightening, and drying period using sunlight. The experiment variables are lactic acid concentration (0,5; 1; 1,5; 2, and 2,5%), UV lightening period (10, 15, 20, 25, and 30 minutes) and drying period using sunlight ( 2, 3, 4, 5, and 6 hours). Tapioca was dissolved in lactic acid solution on agitated tank reactor which was lighted by UV lamp and then screened. The hydrolyzed tapioca was the dried by sunlight. The physicochemical and rheological properties of product were determined by viscosity analysis, swelling power, solubility, baking expansion, center and wall hardness of muffin. Optimum result was obtained 4500 dPa’s; 25,75; 2,75%; 3,81 ml/g, 169,02 gf, and 305,55 gf for viscosity, swelling power, solubility, baking expansion, center and wall hardness of muffin respectively. The physicochemical and rheological properties changed significantly compared to initial tapioca and wheat. Moreover, it was expected to use as food product substitution. Keywords: swelling power, acid hydrolysis, UV photochemical, baking expansion

    Item Type: Article
    Subjects: 600 Teknologi
    Divisions: Fakultas Teknologi Industri > Teknik Kimia
    Depositing User: Adianto Birowo
    Date Deposited: 29 May 2011 10:24
    Last Modified: 29 May 2011 10:24
    URI: http://repository.upnyk.ac.id/id/eprint/282

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