Antioxidant capacity and phenolic content of cocoa beans
Antioxidant capacity and phenolic content of cocoa beans
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DOI：
10.1016/j.foodchem.2005.12.021
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发表时间：
2007-01-01
期刊：
影响因子：
8.8
通讯作者：
Adenan, Ilham
中科院分区：
文献类型：
--
作者：
Othman, Azizah;Ismail, Amin;Adenan, Ilham
这项研究调查了来自不同国家，即马来西亚，加纳，象牙海岸和苏拉威西岛的可可豆的抗氧化能力和总酚含量。通过三种不同的测定来测量从可可豆制备的水和乙醇提取物的抗氧化能力。为了估计总酚含量，使用Folin-Ciocalteu试剂进行测定。β-胡萝卜素漂白试验表明，水提物具有较高的抗氧化活性，而乙醇提取物具有最高的清除和铁还原活性。加纳可可豆表现出最高的抗氧化和清除活性，其次是象牙海岸，马来西亚和苏拉威西。然而，与其他豆类相比，马来西亚和苏拉威西斯豆类表现出最高的铁还原活性。酚类物质含量最高的是马来西亚豆类，其次是苏拉威西，加纳和象牙海岸。酚类物质含量与铁还原活性之间存在正相关关系，无论是乙醇提取物（r = 0.76）还是水提取物（r = 0.78）。我们的研究结果表明，马来西亚可可豆的抗氧化能力和酚类含量与加纳，象牙海岸和苏拉威西斯豆相当。(c)2005爱思唯尔有限公司保留所有权利。
This study investigated the antioxidant capacity and total phenolic content of cocoa beans from different countries, namely Malaysia, Ghana, Ivory Coast and Sulawesi. The antioxidant capacity of water and ethanolic extracts prepared from cocoa beans was measured by three different assays. To estimate the total phenolic content, the assay using Folin-Ciocalteu reagent was used. The water extract showed the higher value of antioxidant activity based on beta-carotene bleaching assay, while the ethanolic extract showed the highest scavenging and ferric reducing activities. Ghanaian cocoa beans showed the highest antioxidant and scavenging activities, followed by Ivory Coast, Malaysian and Sulawesian. However, Malaysian and Sulawesian beans exhibited the highest ferric reducing activity, compared to the other beans. The highest phenolic content was found in Malaysian beans, followed by Sulawesian, Ghanaian and Ivory Coast. A positive correlation existed for both ethanolic (r = 0.76) and water extracts (r = 0.78) between phenolic content and ferric reducing activity. Our results showed that antioxidant capacity and phenolic content of Malaysian cocoa beans were comparable to Ghanaian, Ivory Coast, and Sulawesian beans. (c) 2005 Elsevier Ltd. All rights reserved.