Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).

BACKGROUND:Considering the importance of malting and roasting on the quality of 'acha' beverages, a study was conducted to find optimum conditions for malting and the production of a high-quality roasted extract that could be used for an 'acha' beverage.RESULTS:The data obtained...

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Main Authors: Olusegun, Lasekan, Salva, J. Terezinha, Abbas, Kassim Ali
Format: Article
Language:English
Published: Wiley 2010
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author Olusegun, Lasekan
Salva, J. Terezinha
Abbas, Kassim Ali
author_facet Olusegun, Lasekan
Salva, J. Terezinha
Abbas, Kassim Ali
author_sort Olusegun, Lasekan
collection UPM
description BACKGROUND:Considering the importance of malting and roasting on the quality of 'acha' beverages, a study was conducted to find optimum conditions for malting and the production of a high-quality roasted extract that could be used for an 'acha' beverage.RESULTS:The data obtained were analysed using response surface methodology. The results revealed that the most significant (P < 0.05) malting factors that affect the response variables were the linear terms of germination time and drying temperature. However, for the extract production, the linear term of roasting temperature was the most significant (P < 0.05) factor. The quadratic and interaction terms exhibited significant (P < 0.05) effect in all cases apart from the flavour. CONCLUSION:The overall optimum regions were established at 28 h of germination time, 55 degrees C drying temperature and 5.0% moisture content for the malting conditions while for the extract production, a roasting temperature of 210 degrees C, extraction temperature of 70 degrees C and extraction duration of 20 min were established.
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spelling upm.eprints-142682014-02-10T04:16:34Z http://psasir.upm.edu.my/id/eprint/14268/ Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf). Olusegun, Lasekan Salva, J. Terezinha Abbas, Kassim Ali BACKGROUND:Considering the importance of malting and roasting on the quality of 'acha' beverages, a study was conducted to find optimum conditions for malting and the production of a high-quality roasted extract that could be used for an 'acha' beverage.RESULTS:The data obtained were analysed using response surface methodology. The results revealed that the most significant (P < 0.05) malting factors that affect the response variables were the linear terms of germination time and drying temperature. However, for the extract production, the linear term of roasting temperature was the most significant (P < 0.05) factor. The quadratic and interaction terms exhibited significant (P < 0.05) effect in all cases apart from the flavour. CONCLUSION:The overall optimum regions were established at 28 h of germination time, 55 degrees C drying temperature and 5.0% moisture content for the malting conditions while for the extract production, a roasting temperature of 210 degrees C, extraction temperature of 70 degrees C and extraction duration of 20 min were established. Wiley 2010 Article PeerReviewed Olusegun, Lasekan and Salva, J. Terezinha and Abbas, Kassim Ali (2010) Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf). Journal of the Science of Food and Agriculture, 90 (5). pp. 850-860. ISSN 0022-5142; ESSN: 1097-0010 10.1002/jsfa.3895 English
spellingShingle Olusegun, Lasekan
Salva, J. Terezinha
Abbas, Kassim Ali
Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title_full Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title_fullStr Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title_full_unstemmed Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title_short Effect of malting conditions and quality characteristics of malt and roasted malt extract from 'acha' grains (Digitaria exilis Stapf).
title_sort effect of malting conditions and quality characteristics of malt and roasted malt extract from acha grains digitaria exilis stapf
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AT abbaskassimali effectofmaltingconditionsandqualitycharacteristicsofmaltandroastedmaltextractfromachagrainsdigitariaexilisstapf