共查询到20条相似文献,搜索用时 46 毫秒
1.
2.
3.
4.
5.
乙基麦芽酚生产与应用的新进展 总被引:1,自引:0,他引:1
<正>乙基麦芽酚与麦芽酚一样,同属г-吡哺酮类衍生物。不同的是麦芽酚可以从自然界获得,而乙基麦芽酚则靠人工合成。麦芽酚存在于大麦,大豆的分解液中和大麦培烧凝结物中,因此说:从人类以烘烤谷物为食品开始,麦芽酚便成为食品添加物了。烘烤食品典型的焦糖香味便是麦芽酚所致。1946年,美国首先从木材干馏液中提取麦芽酚,含量仅 相似文献
6.
7.
8.
9.
为有效提高食用植物油中麦芽酚、乙基麦芽酚、香兰素、甲基香兰素和乙基香兰素的检测效率,建立同时测定食用植物油中麦芽酚、乙基麦芽酚、香兰素、甲基香兰素和乙基香兰素的液相色谱-串联质谱(HPLC-MS/MS)检测方法。样品经乙腈提取,正己烷脱脂后,采用甲醇-0.1%甲酸水溶液作为流动相进行梯度洗脱,质谱电喷雾离子源在正离子模式下进行多反应监测扫描,对5种香料进行定量测定。结果表明,5种香料质量浓度与峰面积线性关系良好,相关系数均大于0.998,方法检出限为2.3~19.5μg/kg,定量限为7.7~65.0μg/kg,回收率在85.0%~107.8%之间,相对标准偏差均小于5.0%。该方法操作简便、定性定量准确、灵敏度高,适用于食用植物油中麦芽酚、乙基麦芽酚、香兰素、甲基香兰素和乙基香兰素的同时测定,可有效提高检测效率。 相似文献
10.
目的采用超高效液相色谱-串联质谱法建立同时测定食品中麦芽酚、乙基麦芽酚、香兰素、甲基香兰素和乙基香兰素5种香精的分析方法。方法样品经甲醇提取,Wonda Sep MAX固相萃取柱净化。目标化合物以0.1%甲酸-甲醇溶液为流动相,在梯度洗脱条件下经Inert Sustain Bio C_(18)(2.1 mm×150 mm,3μm)色谱柱分离后采用电喷雾离子源(electrospray ionization,ESI)正离子多反应监测模式(multiple reaction monitoring,MRM)进行检测。结果 5种香精线性相关系数均大于0.99,方法定量限在0.9~16.2 ng/g之间,在3个加标水平下的平均回收率为80.1%~106.0%,相对标准偏差不大于8.9%。结论该方法准确、灵敏,可用于液体乳、婴幼儿配方食品、食用油、乳制品、饮料、烘焙食品等实际样品中香兰素、甲基香兰素、乙基香兰素、麦芽酚和乙基麦芽酚的同时测定。 相似文献
11.
Figueroa-González I Quijano G Ramírez G Cruz-Guerrero A 《Journal of the science of food and agriculture》2011,91(8):1341-1348
Owing to their health benefits, probiotics and prebiotics are nowadays widely used in yogurts and fermented milks, which are leader products of functional foods worldwide. The world market for functional foods has grown rapidly in the last three decades, with an estimated size in 2003 of ca US$ 33 billion, while the European market estimation exceeded US$ 2 billion in the same year. However, the production of probiotics and prebiotics at industrial scale faces several challenges, including the search for economical and abundant raw materials for prebiotic production, the low-cost production of probiotics and the improvement of probiotic viability after storage or during the manufacturing process of the functional food. In this review, functional foods based on probiotics and prebiotics are introduced as a key biotechnological field with tremendous potential for innovation. A concise state of the art addressing the fundamentals and challenges for the development of new probiotic- and prebiotic-based foods is presented, the niches for future research being clearly identified and discussed. 相似文献
12.
13.
常用消毒灭菌法及其机理与应用 总被引:3,自引:0,他引:3
介绍了采用消毒灭菌方法,有加热消毒法,紫外线辐射法和化学药剂消毒法。常用化学药剂有醛类、含氯消毒剂、醇类消毒剂以及高锰酸钾、生石灰等,阐释了消毒与灭菌两个概念的区别。 相似文献
14.
15.
16.
17.
18.
19.