Girma, Yinebeb (2014) Development of Fruit Leather from Indigenous Tamarind (Tamarindus indica L.) Fruit. Masters thesis, Addis Ababa University.
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PDF (Development of fruit leather from indigenous Tamarind ( Tamarindus indica L.) fruit)
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Abstract
The objective of this research was to develop fruit leathers from indigenous tamarind fruit tree. Tamarind fruits were collected, sorted, washed, grinded, soaked in water and then pulped. Flavoring ingredient that is: sucrose and grounded ginger and lemon juice as color preservatives were added to the tamarind. Tamarind puree was spread on trays and dried in electric oven drier to get thin sheets of leathers. The products were evaluated for physicochemical properties, proximate element composition, vitamin c content, mineral element (Ca, K and Na) and sensory properties. Proximate analysis result of the fruit leathers showed that they contained low protein (2.23-3.09%), fat (1.210-2.146%) and ash (3.003-3.536%) content. whereas, it consisted mainly of carbohydrates (69.19376.406%) and crude fiber (3.05-4.71%). The total moisture content (18.316-14.100%) of fruit leathers were low and its titratable acidity (7.645-7.883% citric acid) and pH (3.253-3.390) were high, suggesting that the products would have acceptable storage characteristics and would be microbiologically safe. The vitamin C content of the fruit leathers were found to be in the range between 21.656 and 17.520mg/100g. The mineral contents of the products were ranged between for: Ca 73.111 and 196.39mg/100g, K 595.100 and 731.667mg/100g and Na 102.178 and 125.949 mg/100g. The result of sensory analysis using customer preference test showed that the fruit leathers were well accepted. The two most liked fruit leathers with an overall acceptability of 8.6 and 8.5 (liked very much) were fruit leather dried at 80 0 C and 70 0 C for 8hr respectively. The lowest score was achieved by fruit leathers dried at 90 0 C. In general, significant difference (P < 0.05) has been observed among tamarind leathers in terms of pH, titratable acidity, vitamin C content, proximate element composition, mineral element concentration and sensory attributes. The investigation indicated that, Tamarind leather dried at 80 C for 8hr showed the best quality performance among the rest. 0
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Chemical Engineering |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry T Technology > T Technology (General) T Technology > TP Chemical technology |
| Divisions: | Africana |
| Depositing User: | Andriamparany Edilbert RANOARIVONY |
| Date Deposited: | 04 Jul 2018 14:28 |
| Last Modified: | 04 Jul 2018 14:28 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/6636 |
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