研究采用三大关键技术：1）HPLC定量分析酚类标志物（gastrodin、对羟基苯甲醇等）；2）电子鼻（E-nose）结合主成分分析（PCA）解析气味特征；3）顶空固相微萃取-气相色谱-质谱联用（HS-SPME-GC-MS）鉴定挥发物。 样本涵盖中国8省区的15份天麻种质，包括4个主要变种。

编辑推荐： 本研究聚焦仙人掌 (Opuntia dillenii)籽油的化学成分与生物活性，通过GC、HPLC等技术解析其以亚油酸 (74.34%)为主的脂肪酸组成及多酚类物质（如儿茶素、咖啡酸），发现籽粕多酚含量达123.476±8.21 mg GAE/100 g，并通过FRAP、DPPH及微生物实验证实其显著抗氧化与抗菌活性，为天然产物开发提供新 ...

Agilent J&W Scientific GC column s offer the highest quality and performance of any GC columns on the market today. From the lowest bleed levels and the best inertness for acid, base, and mixed ...

Bo Zhang, associate professor at Xiamen University, China, spoke to LCGC International at HPLC 2025 in Bruges, Belgium, about his recent research on a novel elastic connection technology—macroporous ...

The DB-17 GC Column is a (50%-Phenyl)- methylpolysiloxane column of mid polarity. The DB-17 GC Column is excellent for confirmation analysis. The DB-17 GC Column is equivalent to USP Phase G3 ...

婴幼儿配方奶粉作为宝宝的重要营养来源，其成分安全与营养均衡直接关系到婴幼儿的生长发育。近年来，消费者对配方奶粉的关注度持续攀升，对其中的营养成分、污染物残留等指标的要求愈发严格。据市场调研数据显示，2024 ...

Plants produce a wide diversity of compounds. Broadly, these are separated into primary metabolites, which are necessary for ...

Some little things to make life easy (on www.geocaching.com). Powerful, configurable tool to improve and expand the geocaching pages. The GC little helper II is a powerful tool to enhance and extend ...

美国CPSC（消费品安全委员会）2025年将实施更严格的儿童玩具安全标准，邻苯二甲酸盐、阻燃剂、重金属等化学物质被全面禁用或限用！跨境电商卖家、玩具制造商需立即行动，否则面临产品下架、高额罚款甚至法律诉讼！ 一、2025年美国儿童玩具新规核心变化 ...

One recent example of the impact of this approach relates to the GC's audit community. Previously, more than 1,000 GC employees used an audit management tool to manage audits and streamline their ...

In this article, you’ll find some of the top content that was published on LCGC this week, including a technical article on food flavor and an interview with the president of Shimadzu Europa.

Cloud first adoption strategy In this section When this document was originally published, in the summer of 2016, a right cloud adoption strategy was advocated. The strategy has evolved in the past ...