Alanís-Garza Pedro A, Becerra-Moreno Alejandro, Mora-Nieves José Luis, Mora-Mora Juan Pablo, Jacobo-Velázquez Daniel A
Department of Biotechnology and Food Engineering, School of Biotechnology and Food, Centro de Biotecnología-FEMSA, Tecnológico de Monterrey , Campus Monterrey, Monterrey, NL , Mexico and.
Int J Food Sci Nutr. 2015 May;66(3):282-8. doi: 10.3109/09637486.2015.1007451. Epub 2015 Feb 18.
Broccoli (Brassica oleracea L. var. Italica) is largely consumed all over the world and has a high economic importance. Likewise, broccoli contains high levels of glucosinolates, carotenoids and total phenols, which are related with the prevention of chronic diseases. The present project's objective was to evaluate the effect of industrial freezing on the stability of bioactive molecules in seven commercial broccoli cultivars (Tlaloc®, Endurance®, Florapack®, Domador®, Steel®, Iron Man® and Avenger®). In general, industrial freezing increased the extractability of total glucosinolates, whereas total phenols remained constant in most broccoli cultivars. Likewise, broccoli subjected to industrial freezing showed higher levels of total carotenoids (∼60-300% higher) as compared with fresh broccoli. Results suggest that bioactive compounds in frozen broccoli would be more bioavailable than in raw.
西兰花（Brassica oleracea L. var. Italica）在全球范围内被大量食用，具有很高的经济价值。同样，西兰花含有高水平的硫代葡萄糖苷、类胡萝卜素和总酚，这些物质与预防慢性病有关。本项目的目的是评估工业冷冻对七个商业西兰花品种（Tlaloc®、Endurance®、Florapack®、Domador®、Steel®、Iron Man®和Avenger®）中生物活性分子稳定性的影响。总体而言，工业冷冻提高了总硫代葡萄糖苷的提取率，而在大多数西兰花品种中总酚含量保持不变。同样，与新鲜西兰花相比，经过工业冷冻的西兰花总类胡萝卜素水平更高（高出约60%-300%）。结果表明，冷冻西兰花中的生物活性化合物比生西兰花中的生物活性化合物更具生物利用度。
