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Elmi Kamsiati
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Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Social Sciences Other

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Journal : Jurnal Teknologi Pertanian

 1 
Processing Tomato Powder (Licopersicon esculentum Mill.) By “Foam-Mat Drying” Kamsiati, Elmi
Jurnal Teknologi Pertanian Vol 7, No 2 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The aim of the research on processing of tomato powder (Licopersicon esculentum Mill.) by means of ”foam-mat drying” were to investigate the effect of foaming agents on physical-chemical characteristics of tomato powder. Egg white (0; 2; 5 % b/b) combined with Tween 80 ( 0; 0,2; 0,5 % b/b) was used as the foaming agents. The results showed that the increase of egg white concentration very significantly increased the levels of vitamin C, pH, yield and water vapor reabsorbs ion, but reduced   the titratable acidity. Whereas the increase of Tween 80 concentration very significantly  increased the vitamin C content, water vapor re-absorbsion  and the dispersion stability. The tomato powder with best characteristics was produced by the use of egg white only (2%) as the foaming agent. The yield obtained was 17.8% and contained 2.22% moisture, 68.05% total sugar, 5.50% titratable acidity, pH 3.75 and vitamin C of 77,77 mg. 10-2 g-1. The respective water vapour reabsorbsion and dispersion stability of the product were 2.72% and 83.22%.   Key words: tomato powder, foam-mat drying,  foaming agent
Co-Authors Anna Sulistyaningrum Christina Winarti EKA RAHAYU Emmy Darmawati Heny Herawati Ira Mulyawanti Nikmatul Hidayah Rosniyati Suwarda Yadi Haryadi, Yadi