Waje Catherine K, Jun So-Yun, Lee Yeon-Kyung, Moon Kwang-Deog, Choi Yong Hee, Kwon Joong-Ho
Dept. of Food Science and Technology, Kyungpook Natl. Univ., Daegu, Korea.
J Food Sci. 2009 Jun;74(5):C370-4. doi: 10.1111/j.1750-3841.2009.01161.x.
The viability of broccoli seeds and functional properties, such as ascorbic acid, carotenoid, chlorophyll, and total phenol contents, of broccoli sprouts grown from irradiated seeds were evaluated. The seeds were irradiated using electron beam and gamma ray at doses up to 8 kGy. High germination percentages (>90%) were observed in seeds irradiated at < or =4 kGy, but the yield ratio and sprout length decreased with increased irradiation dose. Irradiation at > or =6 kGy resulted in curling of the sprout roots. Germinated seeds contained higher amounts of nutrients than raw seeds but the nutritional quality of sprouts decreased during postharvest storage. Radiation treatment hampered the growth of irradiated seeds resulting in underdeveloped sprouts with decreased ascorbic acid, carotenoid, and chlorophyll contents. In addition, the decrease in functional content of sprouts was more substantial in samples grown from high-dose (5 kGy) irradiated seeds than that of the low-dose (1 kGy) treated ones. Seed irradiation did not negatively affect the total phenol content of sprouts. In general, electron beam and gamma irradiation of broccoli seeds showed similar effects on the viability and functional properties of sprouts.
对辐照种子培育的西兰花芽苗菜的种子活力以及其功能特性，如抗坏血酸、类胡萝卜素、叶绿素和总酚含量进行了评估。种子使用电子束和伽马射线进行辐照，剂量高达8千戈瑞。在辐照剂量小于或等于4千戈瑞的种子中观察到高发芽率（>90%），但随着辐照剂量增加，产量比和芽苗长度降低。辐照剂量大于或等于6千戈瑞会导致芽苗菜根部卷曲。发芽种子比未发芽种子含有更多营养物质，但芽苗菜的营养品质在收获后储存期间会下降。辐射处理阻碍了辐照种子的生长，导致芽苗菜发育不良，抗坏血酸、类胡萝卜素和叶绿素含量降低。此外，与低剂量（1千戈瑞）处理的样本相比，高剂量（5千戈瑞）辐照种子培育的芽苗菜功能成分的降低更为显著。种子辐照对芽苗菜的总酚含量没有负面影响。总体而言，西兰花种子的电子束辐照和伽马辐照对芽苗菜的活力和功能特性表现出相似的影响。
