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Dwi Agustin, Fitri (2007) PENGARUH pH MEDIA DAN SUHU PEMANASAN TERHADAP STABILITAS PIGMEN BUNGA MAWARMERAH (Rosa damascena Mill). Other thesis, University of Muhammadiyah Malang.


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Rose actually is called “Queen of Flower” because their interesting color and their existence which dominance in arrangement of human life. Beside it give advantage as anti inflamation, anti carcinogen, ant allergenic, and so on. The problem which have to be attention that nature color relevance concerning its stability during processing and saving. It is caused antocianyn stability be influenced by some factors, such as said Nollet (1996) that antocianyn stability is influenced by some factors such as pH, temperature, light, and oxygen along with other factors enzyme and metal. The goal of this study is to know influence of combination trial of different pH and temperature to antocianyn pigment stability of red rose and to know the optimal pH and temperature trial to antocyanyn pigment stability of rose. This study used Random Planning of Group (RAK) which be established factorial. There are two factors which be treated such heating temperature and media pH. The trial planning in this study are I. The heating temperature are 60°C, 70°C, 80°C, 90°C, 100°C, and II. Media pH are pH 3, pH 4, pH 5, pH 6. The antocyanin pigment stability of rose are influence media pH and heating temperature. Treatment of antocyanin optimal media pH and heating temperature of rose are gained: (i) bright degree (L value) by heating trial temperature 60°C and pH 3 by value 41.68, (ii) the yellow degree is gained in heating temperature 60°C and pH 3 by value 6.322, (iii) absorbency value with temperature 60°C with absorbency value 1.264 (iv) the density degree soluble in pH 1 about 4.703 and (v) RSA test to pigment after it is heated that optimal in heating 60°C to pH 4 by value 0.354.

Item Type: Thesis (Other)
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Agriculture and Animal Husbandry > Department of Agrotechnology (54211)
Depositing User: Zainul Afandi
Date Deposited: 24 May 2012 04:11
Last Modified: 24 May 2012 04:11

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