Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-924 Lodz, Poland.
Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-924 Lodz, Poland.
Food Res Int. 2018 Nov;113:234-244. doi: 10.1016/j.foodres.2018.07.017. Epub 2018 Jul 11.
Chocolate manufacturers often develop their own original blends of cocoa beans, which, after processing, will give an unique sensory properties to their chocolates. In recent years, there has been a trend in the production of an increasing amount of low-processed or unprocessed food. Therefore, we carried out the research in which we obtained and analyzed chocolates with different blends of cocoa liquors prepared from roasted and unroasted cocoa beans of Criollo and Forastero varieties.Studies have shown that viscosity and yield value increased and hardness of chocolates lowered with the increase content of cocoa liquor from unroasted beans. Chocolates with cocoa liquor from roasted beans were characterized by the largest ability to scavenge DPPH radicals. Antioxidant activity determined by the ORAC-FL method increased with increasing polyphenol content in the chocolates. Type of the cocoa liquor used induced minor changes in the polyphenol and fatty acid composition. Asparagine was determined at the highest concentration, followed by alanine, glutamine, and serine. The concentration of acetic acid was the higher the higher the content of unroasted beans. The increased content of cocoa liquor from unroasted beans caused the color of the chocolate to brighten, more red and yellow. All tested chocolates were characterized by good organoleptic properties and microbial stability.
巧克力制造商通常会开发自己独特的可可豆混合配方,经过加工后,会赋予巧克力独特的感官特性。近年来,生产越来越多低加工或未加工食品的趋势有所增加。因此,我们进行了研究,获得并分析了由克里奥罗和福拉斯特罗品种的烘焙和未烘焙可可豆制备的不同可可液块混合而成的巧克力。研究表明,随着未烘焙豆的可可液含量的增加,巧克力的粘度和屈服值增加,硬度降低。用烘焙豆的可可液制成的巧克力具有最大的清除 DPPH 自由基的能力。通过 ORAC-FL 法测定的抗氧化活性随着巧克力中多酚含量的增加而增加。所用可可液的类型仅会引起多酚和脂肪酸组成的微小变化。天门冬酰胺的浓度最高,其次是丙氨酸、谷氨酰胺和丝氨酸。未烘焙豆含量越高,乙酸浓度越高。未烘焙豆的可可液含量增加会使巧克力的颜色变亮,更红更黄。所有测试的巧克力均具有良好的感官特性和微生物稳定性。
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