Enhanced Antioxidant Activity in Mung Bean Seedlings Grown under Slow Clinorotation
Enhanced Antioxidant Activity in Mung Bean Seedlings Grown under Slow Clinorotation
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DOI：
10.1007/s12217-019-9699-9
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发表时间：
2019-08-01
影响因子：
1.8
通讯作者：
Kondo, Naoshi
中科院分区：
文献类型：
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作者：
Nakajima, Shusaku;Ogawa, Yuichi;Kondo, Naoshi
初步的空间生长研究表明，微重力有可能增强水果和蔬菜的抗氧化活性。为了研究地球上缓慢旋转的回转器是否可以生产具有增强抗氧化活性和相关化合物（包括类胡萝卜素，酚类和抗坏血酸）的功能性食品，我们在回转（2 rpm）下种植绿豆幼苗并测量上述成分。回转器幼苗具有较高的抗氧化活性和积累的相关化合物，相比正常重力下生长的幼苗。为了进一步探索这些结果的原因，测定了子叶中的α-淀粉酶活性和淀粉量。较高的α-淀粉酶活性和较低的淀粉水平下观察到的子叶，表明较高水平的糖淀粉转化所产生的促进抗氧化化合物的合成和较高的抗氧化活性的幼苗生长时，在clinrotation。我们的数据表明，回转器可以提高蔬菜在早期发育阶段的抗氧化活性。
Initial growth studies in space have demonstrated microgravity has the potential to enhance antioxidant activity in fruit and vegetables. To examine whether a slow-rotating clinostat here on Earth can produce functional foods with enhanced antioxidant activity and related compounds, including carotenoids, phenolics and ascorbic acid, we grew mung bean seedlings under clinorotation (2 rpm) and measured the above components. The clinostat seedlings had higher antioxidant activity and accumulation of related compounds, compared to seedlings grown under normal gravity. To further explore the causes for these results, alpha-amylase activity and amount of starch in cotyledons were measured. Higher alpha-amylase activity and lower starch levels were observed in the cotyledons under clinorotation, suggesting the higher levels of sugars resulting from starch conversion were promoting the synthesis of antioxidant compounds and higher antioxidant activity in seedlings when grown under clinorotation. Our data indicate that a clinostat can enhance antioxidant activity in vegetables in the early developmental stage.