红酵母发酵糖蜜合成胡胡萝卜素及其抗氧化特性研究文献综述

 2022-12-20 22:41:47

开题报告内容:(包括拟研究或解决的问题、采用的研究手段及文献综述,不少于2000字)

【研究目的】:

广泛存在于植物、微生物体内的胡萝卜素是一类多烯类色素【1】。目前已有多项研究证明其由于具有抗氧化活性而对糖尿病,心血管疾病,神经退行性疾病等慢性疾病具有预防或缓解作用【2】【3】【4】【5】。然而,人体自身无法合成胡萝卜素,只能从食物中摄取。近年来,随着人们对于健康生活的追求越来越高,胡萝卜素类食品补充剂的市场需求和市场价格日见攀升【9】。因此开发高效而又经济的胡萝卜素生产方法并对其抗氧化特性进行探究十分必要。

【研究内容】:

1. 本研究以废糖蜜作为碳源,探究可使红酵母发酵得到胡萝卜素和单细胞蛋白的最佳得率的条件

2.对发酵所得的胡萝卜素的抗氧化特性进行探究。

【研究方法】:

  1. 以废糖蜜作为碳源,以红酵母作为发酵菌种生产胡萝卜素和蛋白质。拟对发酵温度,发酵时间,培养基pH,接种量,含水量以及培养基中废糖蜜的含量等发酵条件进行探究,确定可获得胡萝卜素和蛋白的最佳得率的条件。
  2. 对所获得的胡萝卜素进行体外抗氧化性研究:
  3. FRAP法(测定总抗氧化能力)
  4. DPPH法(测定自由基清除率)
  5. 邻苯三酚自氧化法(测定清除氧阴负离子的能力)

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【工作进度安排】:

2020.3-4 文献调研,确定研究方案

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