关键词：食品饮料；市场表现；公司节奏；产业变化趋势；投资主线

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The beneficial effects of soy on established breast cancer is controversial. The goal of this research is to investigate the potential molecular mechanisms by which soy isoflavones affect established breast cancers. 

关键词：乳腺癌;转移;大豆蛋白;解剖模型;分析;合成;细胞(生物学);基因;增长(通用);假设;酮类;实验室;荧光素酶;代谢物;分子性质;肿瘤;蛋白质;反应;生存能力;合成

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用高压液相色谱．质谱法鉴定籽瓜中的环磷酸腺苷，并建立高效液相色谱法测定籽瓜中环磷酸腺苷的含量，对样品提取条件进行优化。结果表明：环磷酸腺苷在O．1～100mg几质量浓度范围内线性关系良好，相关系数为0．999 9；平均加标回收率为98．40％，相对标准偏差为3．22％。经单因素试验和正交试验，确定优化的提取条件为料液比1：12(鲜样)和1：60(干样)水提取，提取温度90℃、提取时间40IIlin、提取次数3次。样品前处理和分析方法准确、简便、可靠、重复性好，可用于籽瓜中环磷酸腺苷含量的分析测定。

关键词：籽瓜；环磷酸腺苷；高压液相色谱．质谱法；高效液相色谱法

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Zero-calorie sweeteners are sugar substitutes which are used in food, beverage, and pharmaceutical products as additives to duplicate the effect of sugar. These calorie-free sweeteners help in leading a healthy life. Zero-calorie sweeteners can be both artificial and natural. The US FDA has approved the use of the following six artificial sweeteners: aspartame, sucralose, Ace-K, cyclamate, neotame, and saccharin. Besides these, there are other new sweeteners that are emerging in the market such as monk fruit and monatin. Demand for natural zero-calorie sweeteners is increasing rapidly in the market, especially for stevia-based sweeteners as they are considered to be more nutritive and safe to consume. Zero-calorie sweeteners deliver the same taste as other sugars and sweeteners without adding calories and are a healthy option for diabetics and obese people

关键词：零热量；甜味剂；添加剂

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Over billions of years, the ocean is regarded as the origin of life on Earth, and the ocean includes the largest habitats hosting the most life forms. Competition among microorganisms for space and nutri ents in the marine environment is a powerful selective force, which has led to the evolution. The evolution prompts the marine micro organisms to generate multifarious enzyme systems to adapt to the complicated marine environments. Therefore, marine microbial enzymes can offer novel biocatalysts with extraordinary properties. This review deals with the research and development work done on the occurrence and bioprocessing of marine microbial enzymes.

关键词：医药；药品；食品；海洋微生物酶

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